cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fall Detection for Old Age Using Deep Learning Mechanism
Creators: name: Lagad P, Dighe Shreya, Dighe Sakshi, Badode Anjali, Shinde Sakshi
Publisher: name: Zenodo
Year: 2025

description: The rise of nuclear families has resulted in less care for the health of the elderly living in privateresidences. Because of this, they are forced to either abandon their lives of solitude or be admitted to anelderly care facility. This means they have to take care of themselves in every way, including taking theirmedication and doing their regular tasks. A fall at home or in a care facility could result from this. Serioushealth problems or even death could result from a fall for which assistance is unavailable. The good causeof assisting the elderly is always bolstered by the application of image processing to detect these falls.Using the idea of a convolutional neural network in image processing, the suggested system offers areasonable and cost-effective solution to this problem. Frame by frame, the suggested model keeps an eyeon the solitary person to make sure they don't fall. The YOLO V8 is being used to assess the region ofinterest and pixel displacement in data segmentation in order to measure the fall. In addition, the modelsends a text message to the doctor, closest relative, and neighbor in an effort to rescue a life.
Doubly Heavy Baryon Production at γγCollider
Creators: name: Li, S. Y.
name: Si, Z. G.
name: Yang, Z. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The inclusive production of doubly heavy baryons $Ξ_{cc}$ and $Ξ_{bb}$ at $γγ$ collider is investigated. It is found that the contribution from the heavy quark pair $QQ$ in color triplet and color sextet are important.
description: errors/typos are corrected
Transport on Complex Networks: Flow, Jamming and Optimization
Creators: name: Tadic, Bosiljka
name: Rodgers, G. J.
name: Thurner, Stefan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Many transport processes on networks depend crucially on the underlying network geometry, although the exact relationship between the structure of the network and the properties of transport processes remain elusive. In this paper we address this question by using numerical models in which both structure and dynamics are controlled systematically. We consider the traffic of information packets that include driving, searching and queuing. We present the results of extensive simulations on two classes of networks; a correlated cyclic scale-free network and an uncorrelated homogeneous weakly clustered network. By measuring different dynamical variables in the free flow regime we show how the global statistical properties of the transport are related to the temporal fluctuations at individual nodes (the traffic noise) and the links (the traffic flow). We then demonstrate that these two network classes appear as representative topologies for optimal traffic flow in the regimes of low density and high density traffic, respectively. We also determine statistical indicators of the pre-jamming regime on different network geometries and discuss the role of queuing and dynamical betweenness for the traffic congestion. The transition to the jammed traffic regime at a critical posting rate on different network topologies is studied as a phase transition with an appropriate order parameter. We also address several open theoretical problems related to the network dynamics.
description: 21 pages, eps figs, to appear in International Journal of Bifurcation and Chaos (Volume 17, Issue 7, July 2007)
MPEC 2024-A20 : 2023 YA2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 YA2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: In-store Marketing Campaign to Promote the Purchase of Healthy Foods and Beverages at Convenience Stores in Rural Kentucky
Creators: name: Dunaway, Brynnan
Publisher: name: University of Kentucky Libraries
Year: 2021
Subjects: subject: FOS: Other agricultural sciences
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: The prevalence of obesity is greater in rural communities, and current health promotion interventions have not shown broad positive impacts on dietary patterns in these areas. Focusing community-based efforts on unconventional food retailers is a unique avenue to encourage healthier food choices in rural populations. This study used shelf-wobblers to market healthier snack and beverage items at convenience stores (n=5) in a rural Kentucky county. Selection of healthy snacks and beverages from the store inventory was conducted using the CDC Food Service Guidelines for Federal Facilities calculator. Items were sorted into four categories: meal replacement snacks, high-protein snacks, low-fat carbohydrate snacks, and no-calorie drinks. Monthly sales data was collected to measure baseline sales and post-intervention sales. This data was analyzed using a difference-in-differences economic model, which assessed percent changes in sales within and among the five stores. This study found an overall increase in healthier snack and beverage purchases after implementation of the marketing wobblers. The findings of this study provide unique insight into community-based efforts for health promotion in unconventional food retailers in the Appalachian region.
description: © 2021 Brynnan Nicole Jacobs Dunaway
Symmetric Ideal Magnetofluidostatic Equilibria with Non-Vanishing Pressure Gradients in Asymmetric Confinement Vessels
Creators: name: Sato, Naoki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the possibility of constructing steady magnetic fields satisfying the force balance equation of ideal magnetohydrodynamics with tangential boundary conditions in asymmetric confinement vessels, i.e. bounded regions that are not invariant under continuous Euclidean isometries (translations, rotations, or their combination). This problem is often encountered in the design of next-generation fusion reactors. We show that such configurations are possible if one relaxes the standard assumption that the vessel boundary corresponds to a pressure isosurface. We exhibit a smooth solution that possesses an Euclidean symmetry and yet solves the boundary value problem in an asymmetric ellipsoidal domain while sustaining a non-vanishing pressure gradient. This result provides a definitive answer to the problem of existence of regular ideal magnetofluidostatic equilibria in asymmetric bounded domains. The question remains open whether regular asymmetric solutions of the boundary value problem exist.
description: 9 pages, 4 figures
Improved spectral gaps for random quantum circuits: large local dimensions and all-to-all interactions
Creators: name: Haferkamp, Jonas
name: Hunter-Jones, Nicholas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Random quantum circuits are a central concept in quantum information theory with applications ranging from demonstrations of quantum computational advantage to descriptions of scrambling in strongly-interacting systems and black holes. The utility of random quantum circuits in these settings stems from their ability to rapidly generate quantum pseudo-randomness. In a seminal paper by Brandão, Harrow, and Horodecki, it was proven that the $t$-th moment operator of local random quantum circuits on $n$ qudits with local dimension $q$ has a spectral gap of at least $Ω(n^{-1}t^{-5-3.1/\log(q)})$, which implies that they are efficient constructions of approximate unitary designs. As a first result, we use Knabe bounds for the spectral gaps of frustration-free Hamiltonians to show that $1D$ random quantum circuits have a spectral gap scaling as $Ω(n^{-1})$, provided that $t$ is small compared to the local dimension: $t^2\leq O(q)$. This implies a (nearly) linear scaling of the circuit depth in the design order $t$. Our second result is an unconditional spectral gap bounded below by $Ω(n^{-1}\log^{-1}(n) t^{-α(q)})$ for random quantum circuits with all-to-all interactions. This improves both the $n$ and $t$ scaling in design depth for the non-local model. We show this by proving a recursion relation for the spectral gaps involving an auxiliary random walk. Lastly, we solve the smallest non-trivial case exactly and combine with numerics and Knabe bounds to improve the constants involved in the spectral gap for small values of $t$.
description: 27 pages, 2 figures
Phase behaviour of a symmetrical binary fluid mixture in a field
Creators: name: Koefinger, Juergen
name: Kahl, Gerhard
name: Wilding, Nigel B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Integral equation theory calculations within the mean spherical approximation (MSA) and grand canonical Monte Carlo (MC) simulations are employed to study the phase behaviour of a symmetrical binary fluid mixture in the presence of a field arising from unequal chemical potentials of the two particle species. Attention is focused on the case for which, in the absence of a field, the phase diagram exhibits a first order liquid-liquid transition in addition to the liquid-vapor transition. We find that in the presence of a field, two possible subtypes of phase behaviour can occur, these being distinguished by the relationship between the critical lines in the full phase diagram of temperature, density, and concentration. We present the detailed form of the respective phase diagrams as calculated from MSA and compare with results from the MC simulations, finding good overall agreement.
description: 8 pages, 2 figures
Stenus schubarti L. BENICK 1949
Creators: name: Puthz, Volker
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Stenus
Stenus schubarti

description: Stenus schubarti L. BENICK, 1949
(Abb. 1-3)
Stenus schubarti L. BENICK, 1949: 557.
Material: 2 ♂♂, 1 ♀ - Syntypen: BRASILIEN: Alagoas, Porta da Boca, am Lago de Jiquiá, Urwald, 11.VII.1937, Dr. Schubart: FMCh, cP.
Bemerkungen: Zwei von drei Exemplaren (vermutlich alle Syntypen), die mir vorliegen, sind Männchen. Weil diese keine Auszeichnungen an den Beinen besitzen und das 8. Sternit am Hinterrand nicht ausgerandet ist, hat BENICK die Männchen irrtümlich für Weibchen gehalten.- Die verwandtschaftlichen Beziehungen dieser Art sind unklar
PM eines ♂ - Syntypus: HW: 25; DE: 13; PW: 17; PL: 17,5; EW: 21; EL: 14; SL: 9. Gesamtlänge: 1,8-2,5mm (Vorderkörperlänge: 2,1mm).
Männchen: 9. Sternit apikolateral mit spitzem Zahn (Abb. 3). 10. Tergit am Hinterrand abgerundet. Aedoeagus (Abb. 2), Medianlobus spitzwinklig verengt, die Apikalpartie mit ventralen Seitenfalten, innen mit deutlich sklerotisierter Ausstülpspange und einem langtubigen Innensack; Parameren kürzer als der Medianlobus, an ihren Spitzen mit 6 Borsten.
Weibchen: 8. Sternit am Hinterrand breit abgerundet. Valvifer apikolateral spitz. 10. Tergit wie beim Männchen. Keine sklerotisierte Spermatheka feststellbar.
description: Published as part of Puthz, Volker, 2016, Übersicht über die neotropischen Arten der Gattung Stenus LATREILLE mit seitlich gerandetem Abdomen und ungelappten Tarsen (Coleoptera, Staphylinidae) 350. Beitrag zur Kenntnis der Steninen, pp. 1551-1634 in Linzer biologische Beiträge 48 (2) on page 1559, DOI: 10.5281/zenodo.5355748
Investigating the Axonal Magnetic Fields Corresponding to Delta and Theta Waves in the Human Brain Using Direct Detection MRI
Creators: name: Sze Chow, Li
name: George, Reuben
name: Moghavvemi, M
name: Rizon, Mohamed
name: Nigel James Paley, Martyn
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 320999
subject: Neurosciences not elsewhere classified
classificationCode: 320907
subject: Sensory systems
classificationCode: 400801
subject: Circuits and systems
classificationCode: 400802
subject: Electrical circuits and systems
classificationCode: 400905
subject: Electronic instrumentation
classificationCode: 400906
subject: Electronic sensors
classificationCode: 400907
subject: Industrial electronics

description: This study showed an alternative and non-invasive method for measuring brainwaves using Magnetic Resonance Imaging (MRI) with a gradient echo - echo planar imaging (GE-EPI) sequence. An attempt was made to measure the axonal magnetic fields of delta and theta waves using direct detection with MRI. Time-varying brainwaves produce an axonal current which may induce a magnetic field according to the Biot-Savart law. The MR scanner can detect inhomogeneous magnetic fields caused by weak currents generated in a subject that interact with the main magnetic field, Bo , of the scanner. Fifteen healthy volunteers were scanned with closed eyes in a dark imaging room. The GE-EPI sequence was used to acquire 1500 time frame images in an axial plane on a 3.0 T Philips scanner. A Butterworth bandstop filter was applied to filter out physiological signals before the detection of brainwave signals. Fast Fourier Transform (FFT) was used to produce frequency spectra where the brainwave frequencies could be detected. Our study measured an axonal magnetic field of 1.5 ± 0.2 nT for the delta waves and 1.5 ± 0.3 nT for the theta waves. Delta waves were found in the range 1.5–4.0 Hz and theta waves in the range 4.0–6.5 Hz. The waves were found on both sides of the occipital lobe, temporal lobe, and hippocampus. We detected more theta waves (2.1% of the brain slice with 5 mm thickness) than delta waves (1.5% of the brain slice with 5 mm thickness). PLCC for the % |ΔS/Seq| between the delta and theta waves was 0.7584 at p=0.001 significance level and 95% confidence level. We also applied Short Time Fourier Transform (STFT) with epoch lengths of 3.85 s, 7.7 s, and 30.8 s. But the appearance of brainwave signals was not as clear as using FFT over the entire imaging duration.
Stenus megelytratus PUTHZ 1971
Creators: name: Puthz, Volker
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Stenus
Stenus megelytratus

description: Stenus megelytratus PUTHZ, 1971
(Abb. 4, 7, 24, 65, 71, 79, 118)
Stenus megelytratus PUTHZ, 1971: 4.
Material: Ausser den beiden Typen kenne ich noch 1♂, 1♀: KOLUMBIEN: 42 km E Pasto, Pasto- Mocoa Road, 2600m, 23.III.1971, B. Malkin (FMCh). ECUADOR: 6♂♂, 8♀♀: Napo, 3 km NW Coyuja, 2500m, 29.II.1976, J.M. Campbell (CNC, cP); 7♂♂, 2♀♀: Napo, 4 km W Papallacta, 3200m, 2.III.1976, idem (CNC, cP); 1♀: ibidem, 2600m, 6.VII.1994, F. Genier (KSEM).
Bemerkungen: Neu für Ecuador.- Wie aus der obigen Bestimmungstabelle hervorgeht, gehört diese Art in eine eigene Gruppe, aus der bisher nur die namengebende Art bekannt ist.
description: Published as part of Puthz, Volker, 2016, Übersicht über die neotropischen Arten der Gattung Stenus LATREILLE mit seitlich gerandetem Abdomen und ungelappten Tarsen (Coleoptera, Staphylinidae) 350. Beitrag zur Kenntnis der Steninen, pp. 1551-1634 in Linzer biologische Beiträge 48 (2) on page 1560, DOI: 10.5281/zenodo.5355748
Euclid: Identification of asteroid streaks in simulated images using StreakDet software
Creators: name: Pöntinen, M.
name: Granvik, M.
name: Nucita, A. A.
name: Conversi, L.
name: Altieri, B.
name: Auricchio, N.
name: Bodendorf, C.
name: Bonino, D.
name: Brescia, M.
name: Capobianco, V.
name: Carretero, J.
name: Carry, B.
name: Castellano, M.
name: Cledassou, R.
name: Congedo, G.
name: Corcione, L.
name: Cropper, M.
name: Dusini, S.
name: Frailis, M.
name: Franceschi, E.
name: Fumana, M.
name: Garilli, B.
name: Grupp, F.
name: Hormuth, F.
name: Israel, H.
name: Jahnke, K.
name: Kermiche, S.
name: Kitching, T.
name: Kohley, R.
name: Kubik, B.
name: Kunz, M.
name: Laureijs, R.
name: Lilje, P. B.
name: Lloro, I.
name: Maiorano, E.
name: Marggraf, O.
name: Massey, R.
name: Meneghetti, M.
name: Meylan, G.
name: Moscardini, L.
name: Padilla, C.
name: Paltani, S.
name: Pasian, F.
name: Pires, S.
name: Polenta, G.
name: Raison, F.
name: Roncarelli, M.
name: Rossetti, E.
name: Saglia, R.
name: Schneider, P.
name: Secroun, A.
name: Serrano, S.
name: Sirri, G.
name: Taylor, A. N.
name: Tereno, I.
name: Toledo-Moreo, R.
name: Valenziano, L.
name: Wang, Y.
name: Wetzstein, M.
name: Zoubian, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The ESA Euclid space telescope could observe up to 150 000 asteroids as a side product of its primary cosmological mission. Asteroids appear as trailed sources, that is streaks, in the images. Owing to the survey area of 15 000 square degrees and the number of sources, automated methods have to be used to find them. Euclid is equipped with a visible camera, VIS (VISual imager), and a near-infrared camera, NISP (Near-Infrared Spectrometer and Photometer), with three filters. We aim to develop a pipeline to detect fast-moving objects in Euclid images, with both high completeness and high purity. We tested the StreakDet software to find asteroids from simulated Euclid images. We optimized the parameters of StreakDet to maximize completeness, and developed a post-processing algorithm to improve the purity of the sample of detected sources by removing false-positive detections. StreakDet finds 96.9% of the synthetic asteroid streaks with apparent magnitudes brighter than 23rd magnitude and streak lengths longer than 15 pixels ($10\,{\rm arcsec\,h^{-1}}$), but this comes at the cost of finding a high number of false positives. The number of false positives can be radically reduced with multi-streak analysis, which utilizes all four dithers obtained by Euclid. StreakDet is a good tool for identifying asteroids in Euclid images, but there is still room for improvement, in particular, for finding short (less than 13 pixels, corresponding to 8$\,{\rm arcsec\,h^{-1}}$) and/or faint streaks (fainter than the apparent magnitude of 23).
description: 12 pages, 5 figures
Deep Analyses of Nulling in Arecibo Pulsars Reveal Further Periodic Behavior
Creators: name: Herfindal, Jeffrey
name: Rankin, Joanna
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Sensitive Arecibo observations provide an unprecedented ability to detect nulls for an accurate pulse-modulation quelling (PMQ) analysis. We demonstrate that a number of conal pulsars show "periodic nulling" similar to the phenomenon found earlier in pulsar B1133+16.
description: 5 pages, 2 figures, 2 tables, uses mn2e.cls
Stenus cerromuertanus PUTHZ 2013
Creators: name: Puthz, Volker
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Stenus
Stenus cerromuertanus

description: Stenus cerromuertanus PUTHZ, 2013
(Abb. 307, 308, 322)
Stenus cerromuertanus PUTHZ, 2013: 92.
Stenus fuscivestis PUTHZ, 2014: 1673 nov. syn.
Bemerkungen: Die Beschreibung des S. cerromuertanus erfolgte nach einem Weibchen. Später wurde auch das Männchen dieser variablen Art entdeckt, aber zuerst für eine eigene Art gehalten. Dies wird hier berichtigt.
description: Published as part of Puthz, Volker, 2016, Übersicht über die neotropischen Arten der Gattung Stenus LATREILLE mit seitlich gerandetem Abdomen und ungelappten Tarsen (Coleoptera, Staphylinidae) 350. Beitrag zur Kenntnis der Steninen, pp. 1551-1634 in Linzer biologische Beiträge 48 (2) on page 1560, DOI: 10.5281/zenodo.5355748
An Argumentation-based Approach for Identifying and Dealing with Incompatibilities among Procedural Goals
Creators: name: Morveli-Espinoza, Mariela
name: Nieves, Juan Carlos
name: Possebom, Ayslan
name: Puyol-Gruart, Josep
name: Tacla, Cesar Augusto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: During the first step of practical reasoning, i.e. deliberation, an intelligent agent generates a set of pursuable goals and then selects which of them he commits to achieve. An intelligent agent may in general generate multiple pursuable goals, which may be incompatible among them. In this paper, we focus on the definition, identification and resolution of these incompatibilities. The suggested approach considers the three forms of incompatibility introduced by Castelfranchi and Paglieri, namely the terminal incompatibility, the instrumental or resources incompatibility and the superfluity. We characterise computationally these forms of incompatibility by means of arguments that represent the plans that allow an agent to achieve his goals. Thus, the incompatibility among goals is defined based on the conflicts among their plans, which are represented by means of attacks in an argumentation framework. We also work on the problem of goals selection; we propose to use abstract argumentation theory to deal with this problem, i.e. by applying argumentation semantics. We use a modified version of the "cleaner world" scenario in order to illustrate the performance of our proposal.
description: 31 pages, 9 figures, Accepted in the International Journal of Approximate Reasoning (2019)
Investigation of a topping/bottoming ORC based CHP configuration using a new evaporator concept for residential applications
Creators: name: Pereira, João Silva
name: Mendes, Ricardo
name: André, Jorge Campos
name: Ribeiro, José Baranda
Publisher: name: Technical University of Munich
Year: 2021

description: The development of ORC based micro-CHP systems to retrofit the current combi-boilers is receiving noticeable attention from research centres and companies due to the huge dimension of the potential market. Recognizing the importance that the evaporator has on the technological/ commercial success of these systems, and instead of avoiding the problem through the adoption of alternative restricting solutions (i.e. indirect vaporization process), it seems reasonable to face the challenges associated with the development of a specifically designed ORC-evaporator capable to directly use the hightemperature combustion gases to perform the vaporization of the working fluid (direct vaporization). In an attempt to overcome those challenges and fulfil this technological gap, that is believed to be preventing the widespread use of these systems, this paper presents and discuss some of its main design principles. From those principles emerged a hybrid topping/bottoming) CHP configuration in which the thermal energy is produced stepwise: firstly in the ORC-condenser and then in a post-heater, that is integrated on the ORC-evaporator, directly with the combustion gases. A model of this configuration was developed to determine the fraction of the CHP water heating process performed in the post-heater that maximizes the primary energy savings (in more than 20%) and ORC net power output (in more than 5%) for a wide range of CHP operating conditions. When compared to a standard CHP configuration, this solution show benefits for the greater part of those conditions. Besides solving the safety issue posed by the ORC-evaporator requirements and the performance benefits shown, this configuration has an additional positive side effect: the decrease of the combustion gases’ temperature before they reach the organic fluid heat-exchanger section in the ORC-evaporator that leads to a reduction of the risk of the working fluid thermal degradation.
Master's thesis recital (clarinet)
Creators: name: Corpus, Luis
Publisher: name: The University of Texas at Austin
Year: 2019
Subjects: Sonatas (Clarinet and piano)
Trios (Piano, clarinet, cello)
Clarinet and piano music

description: Sonata for clarinet and piano / Leonard Bernstein -- Bucolique : for clarinet and piano / Eugène Bozza -- Sonata no. 2 in E-flat major, op. 120 / Johannes Brahms -- Eight pieces for piano trio / Max Bruch
Evolution of magnetic component in Yang-Mills condensate dark energy models
Creators: name: Zhao, Wen
name: Xu, Donghui
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The evolution of the electric and magnetic components in an effective Yang-Mills condensate dark energy model is investigated. If the electric field is dominant, the magnetic component disappears with the expansion of the Universe. The total YM condensate tracks the radiation in the earlier Universe, and later it becomes $w_y\sim-1$ thus is similar to the cosmological constant. So the cosmic coincidence problem can be avoided in this model. However, if the magnetic field is dominant, $w_y>1/3$ holds for all time, suggesting that it cannot be a candidate for the dark energy in this case.
description: 12 pages, 4 figures, minor typos corrected
Direct measurement of ferroelectric polarization in a tunable semimetal
Creators: name: de la Barrera, Sergio C.
name: Cao, Qingrui
name: Gao, Yang
name: Gao, Yuan
name: Bheemarasetty, Vineetha S.
name: Yan, Jiaqiang
name: Mandrus, David G.
name: Zhu, Wenguang
name: Xiao, Di
name: Hunt, Benjamin M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ferroelectricity, the electrostatic counterpart to ferromagnetism, has long been thought to be incompatible with metallicity due to screening of electric dipoles and external electric fields by itinerant charges. Recent measurements, however, demonstrated signatures of ferroelectric switching in the electrical conductance of bilayers and trilayers of WTe$_2$, a semimetallic transition metal dichalcogenide with broken inversion symmetry. An especially promising aspect of this system is that the density of electrons and holes can be continuously tuned by an external gate voltage. This degree of freedom enables investigation of the interplay between ferroelectricity and free carriers, a previously unexplored regime. Here, we employ capacitive sensing in dual-gated mesoscopic devices of bilayer WTe$_2$ to directly measure the spontaneous polarization in the metallic state and quantify the effect of free carriers on the polarization in the conduction and valence bands, separately. We compare our results to a low-energy model for the electronic bands and identify the layer-polarized states that contribute to transport and polarization simultaneously. Bilayer WTe$_2$ is thus shown to be a canonical example of a ferroelectric metal and an ideal platform for exploring polar ordering, ferroelectric transitions, and applications in the presence of free carriers.
Zeotropic mixtures study in plate heat exchangers and ORC systems
Creators: name: Blondel, Quentin
name: Tauveron, Nicolas
name: Lhermet, Guillaume
name: Caney, Nadia
Publisher: name: Technical University of Munich
Year: 2021

description: To our best knowledge, there are no correlations in the scientific literature to predict the twophase heat transfer coefficients of Hydrofluoroethers pure fluids and zeotropic mixtures used in plate heat exchangers. This work has allowed the development of evaporation and condensation correlations for such fluids. Correlations based on dimensionless numbers and working fluids critical properties gave promising results, with a prediction of the two-phase heat transfer coefficient around 15% for heat source and 50% for cooling source which lead respectively to a prediction of 4% and 6% for the global thermal power exchanged. The coupled operation between the heat exchangers and the organic Rankine cycle was also studied. For this purpose, the influence of the heat source variation on the performances of the hot exchanger and the overall cycle was analyzed. Results obtained showed a positive improvement simultaneously of the hot exchanger performances and the ORC performances. Regarding the use of zeotropic mixtures as working fluids in ORC system, it is often proposed in the literature as being able to significantly increase the performance of this thermodynamic cycle due to better heat transfer at the hot source. Nevertheless, the great majority of these studies are numerical and do not take into account the interactions and system effects existing within the thermodynamic cycle when using a mixture instead of a pure fluid. This work has allowed to highlight this complexity and to provide a better understanding of the use of zeotropic mixtures
Этнокультурные трансформации у крещеных казахов Черного Ануя (Горный Алтай) в советский период
Creators: name: А.Н., Ямсков
Publisher: name: Zenodo
Year: 2006
Subjects: алтайские казахи
российские казахи
крещёные казахи
казахская антропонимия

description: По материалам полевых исследований 1990 г. в сёлах Чёрный Ануй и Турата описаны особенности антропонимии местных крещёных казахов, а также их возвращение к исламу в начале 1920-х гг., постепенное угасание мусульманских культурных особенностей в поздний советский период, и повторная частичная исламизация с конца 1980-х гг.
Boosting Continuous Sign Language Recognition via Cross Modality Augmentation
Creators: name: Pu, Junfu
name: Zhou, Wengang
name: Hu, Hezhen
name: Li, Houqiang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Continuous sign language recognition (SLR) deals with unaligned video-text pair and uses the word error rate (WER), i.e., edit distance, as the main evaluation metric. Since it is not differentiable, we usually instead optimize the learning model with the connectionist temporal classification (CTC) objective loss, which maximizes the posterior probability over the sequential alignment. Due to the optimization gap, the predicted sentence with the highest decoding probability may not be the best choice under the WER metric. To tackle this issue, we propose a novel architecture with cross modality augmentation. Specifically, we first augment cross-modal data by simulating the calculation procedure of WER, i.e., substitution, deletion and insertion on both text label and its corresponding video. With these real and generated pseudo video-text pairs, we propose multiple loss terms to minimize the cross modality distance between the video and ground truth label, and make the network distinguish the difference between real and pseudo modalities. The proposed framework can be easily extended to other existing CTC based continuous SLR architectures. Extensive experiments on two continuous SLR benchmarks, i.e., RWTH-PHOENIX-Weather and CSL, validate the effectiveness of our proposed method.
description: Accepted to ACM Multimedia 2020
Graceful exit from a stringy landscape via MSSM inflation
Creators: name: Allahverdi, Rouzbeh
name: Frey, Andrew R.
name: Mazumdar, Anupam
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The cosmological evolution of the string landscape is expected to consist of multiple stages of old inflation with large cosmological constant ending by tunnelling. Old inflation has a well known graceful exit problem as the observable universe becomes empty, devoid of any entropy. Simultaneously, in the quest for reheating the right degrees of freedom, it is important that the final stage of inflation reheat Standard Model sector. It is known that inflation can occur naturally along a flat direction of the Minimal Supersymmetric Standard Model (MSSM), solving the reheating problem, but the initial conditions require a large degree of fine-tuning. In this paper, we study how inflation of a MSSM flat direction can be embedded into the string theory landscape to solve both the graceful exit problem of old inflation and the fine-tuning problem of MSSM inflation, elaborating on ideas of Bousso and Polchinski. The fluctuations of the MSSM flat direction during old inflation create regions with initial conditions favorable for eternal inflation, which also allows the cosmological constant to continue to relax. This final phase of inflation also provides all the usual benefits of MSSM inflation, including straightforward reheating into Standard Model degrees of freedom.
description: 23pp, RevTeX4; v3. added refs, clarified discussion of tunnelling
Comparison of four types of radial turbines for a 250KW ORC power installation
Creators: name: Smirnov, Maksim
name: Kuklina, Natalia
name: Sebelev, Aleksandr
name: Zuccato, Alessandro
name: Zabelin, Nikolay
Publisher: name: Technical University of Munich
Year: 2021
Subjects: ORC turbines; CFD; axial thrust

description: This paper seeks to compare four solutions for an ORC power plant rated at 250 kW running with R1233zdE as the working fluid: a radial inflow – axial outflow turbine with a typical reaction about of 0.5, radial centripetal turbines with reaction of 0.36 and 0.05 and an impulse centrifugal turbine. All these turbines are single stage and high-speed. Steady state CFD simulations were carried out to assess the performance and the axial force values at the design and partial load. As expected, the radial inflow turbine has exhibited the best performance, followed then by the centripetal reaction turbine with 4% of a relative efficiency decrease. Both impulse turbines have shown 11% less efficiency at the design point comparing to the radial inflow stage. Under the partial load, the turbines have exhibited different trends of their efficiency behaviour. In particular, with a power output reduction from 100 to 40%, the radial inflow and the centripetal turbine have lost 8% of their efficiency, while the centripetal impulse turbine has lost 17% and the centrifugal impulse turbine just 5%. The axial force of the radial inflow and both centripetal stages may be balanced to reach a desired value by means of the modification of the disk back seal. Instead, the centrifugal impulse stage fails to provide such a balancing, which results in high values of the axial thrust even despite an impulse nature of this stage.
Some characteristics of the second betti number of random two dimensional simplicial complexes
Creators: name: Tan, Kang
Publisher: name: University of British Columbia
Year: 2009

description: In this thesis, through generating random two-dimensional simplicial complexes, we studied the event (b₂=0) for some specific probabilities. We found when the probability of event (b₂=0) takes on certain specific values, the pair (n₀,n₂) lies on certain lines. However, this research is limited by our sample space ( i.e. for P(b₂=0) ≈ 10%, 10 ≤ n₀ ≤ 80; for P(b₂=0) ≈ 50%, 12 ≤ n₀ ≤ 100; for P(b₂=0) ≈ 90%, 12 ≤ n₀ ≤ 145). The " linear behavior" may not hold asymptotically. In the same time, we endeavor to find the number of tetrahedra and 6-triangles in the simplicial complexes. When the event (b₂=0) occurs in our specific probabilities, it seems the second Betti number should come from tetrahedra and 6-triangles with high probability. However, the expectation of the number of tetrahedra and 6-triangles goes to zero, when no goes to infinity and there exists linear relationships between the pair (n₀,n₂). This evidence may also support that the " linear behavior" may not hold asymptotically. If n₂ and n₀ vary linearly with n₀ going to infinity, then the probability that n₀(Κ) — n₀ is extremely small in model MB for reasons are similar to the Coupon Collector's problem. Hence, the probability that we cannot find element in S(n₀,n₂) is large, which indicates that the model may have problems.
Wheeler-DeWitt equation rejects quantum effects of grown-up universes as a candidate for dark energy
Creators: name: He, Dongshan
name: Cai, Qing-yu
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we study the changes of quantum effects of a growing universe by using Wheeler-DeWitt equation (WDWE) together with de Broglie-Bohm quantum trajectory approach. From WDWE, we obtain the quantum modified Friedmann equations which have additional terms called quantum potential compared to standard Friedmann equations. The quantum potential governs the behavior of the early universe, providing energy for inflation, while it decreases rapidly as the universe grows. The quantum potential of the grown-up universe is much smaller than that required for accelerating expansion. This indicates that quantum effects of our universe cannot be treated as a candidate for dark energy.
description: Any comments are welcome!
Stenus repletus SHARP 1886
Creators: name: Puthz, Volker
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Stenus
Stenus repletus

description: Stenus repletus SHARP, 1886
(Abb. 156, 226, 332)
Stenus repletus SHARP, 1886: 646; L. BENICK, 1938: 261.
Material: 1♂ - Syntypus: GUATEMALA: San Jeronimo (NHML); 1♂ - ST: Cerro Zunil (NHML), 1♀ - ST: San Joaquino (NHML); 1♂ - ST: Tamahu / Vera Paz (cP). HONDURAS: 1♂: Lempira Prov., 13,1 km NE & 7.3 km E Gracias, Mt. Puca, 1320m, 14 o 41’N, 88 o 31’W, fungi under logs, 18.VI.1994, Ashe & Brooks (KSEM); 2♂♂: Santa Barbara Prov., Mt. Sta Barbara 11.5 km S & 5.6 km W Peña Blanca, 1800m, 14 o 57’N, 88 o 05’W, beating stick pile, 20.VI.1994, idem (KSEM, cP); 2♂♂, 1♀: Comayagua Prov., 18 km E Comayagua, 2000m, 14 o 27’N, 87 o 32’W, oak-liquidambar litter, 20.VIII.1994, R. Anderson (KSEM). MEXIKO: 1♀: Chiapas, Volcan Tacana, lower slopes, ca. 4 km N Union Juarez, 2000m, cloud forest litter, 19.IX.1992, R. Anderson (KSEM); 2♂♂, 2♀♀: Chiapas, 6,9 mi S Jitotol, Highway 195, 17 o 02’N, 92 o 52’W, pine sweetgum forest, 1650m, sifting litter in barranca, 5.V.1977, J. Ashe (FMCh, cP); 1♂, 1♀: Chiapas, Municipio Angel Albino Corzo, Reserve El Triunfo, 2050m, 15 o 39.248’N, 92 o 48.537’W, oak forest, litter, 16.-21.XI.2001, R. Anderson (KSEM); 1♂: Chiapas, 15.1 km N Bochil, 1930m,, oak-pine-liquidambar forest, litter, 24IX.1992, R. Anderson (cP); 1♀: Veracruz, 2,3 km S Jalapa on Coatepec road, 1280m, litter, 13.VII.1992, Ashe & Frania (KSEM); 1♂: 1,1 km S Jalapa, Coatepec road, 1280m, leaf litter in ravine, 12.VII.1992, idem (KSEM); 1♂: Oaxaca, 23 km S Valle Nacional, 1250m, 21.XI.1989, sifting, litter in tropical montane forest, 21.XI.1989, R. Baranowski (ZML).
Bemerkungen: Die sekundären Geschlechtsmerkmale des Männchens ähneln denen des S. punctiventris ausserordentlich. Das Metasternum ist aber weniger gedrängt punktiert (Abb. 156) und der Apikalausschnitt des 8. Sternits ist schmäler (Abb. 332). Aedoeagus (Abb. 226), Medianlobus vorn mit breit abgerundeter Spitze, innen ohne grössere Zähne. Weibchen wie bei S. punctiventris.- Skulpturell lassen sich beide Arten nicht sicher trennen!
description: Published as part of Puthz, Volker, 2016, Übersicht über die neotropischen Arten der Gattung Stenus LATREILLE mit seitlich gerandetem Abdomen und ungelappten Tarsen (Coleoptera, Staphylinidae) 350. Beitrag zur Kenntnis der Steninen, pp. 1551-1634 in Linzer biologische Beiträge 48 (2) on pages 1561-1562, DOI: 10.5281/zenodo.5355748
Field and current distributions and ac losses in a bifilar stack of superconducting strips
Creators: name: Clem, John R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In this paper I first analytically calculate the magnetic-field and sheet-current distributions generated in an infinite stack of thin superconducting strips of thickness d, width 2a >> d, and arbitrary separation D when adjacent strips carry net current of magnitude I in opposite directions. Each strip is assumed to have uniform critical current density Jc, critical sheet-current density Kc = Jc d, and critical current Ic = 2a Kc, and the distribution of the current density within each strip is assumed to obey critical-state theory. I then derive expressions for the ac losses due to magnetic-flux penetration both from the strip edges and from the top and bottom of each strip, and I express the results in terms of integrals involving the perpendicular and parallel components of the magnetic field. After numerically evaluating the ac losses for typical dimensions, I present analytic expressions from which the losses can be estimated.
description: 8 pages, 9 figures
title: QUANTIFICATION OF IN-PLAY COMPETITION DEMANDS OF COLLEGIATE AMERICAN FOOTBALL PLAYERS USING GLOBAL POSITIONING SYSTEMS
Creators: name: Brownell, Alex
Publisher: name: University of Kentucky Libraries
Year: 2021
Subjects: subject: FOS: Educational sciences
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: There is limited information describing the competition demands of American football. A greater understanding of competition demands will allow strength and conditioning practitioners to create appropriate training programs to enhance athlete readiness and performance. Therefore, the purpose of this study was to analyze the competition demands of collegiate American football players using global positioning systems (GPS), specifically comparing the in-play GPS versus out-of-play GPS outcomes. Twenty-two American football athletes (Age: 20.8 ± 0.9 yr, Height: 190.2 ± 4.7 cm, Body mass: 113.4 ± 22.3 kg) were monitored during 12 regular season competitions over 13 weeks. Athletes were divided into specific offensive and defensive position groups. The study utilized relative velocity zones to determine the distance traveled by athletes in different velocity zones. In-play GPS variables were stratified from out-of-play GPS variables using velocity tracings from Openfield software and competition video. Paired samples T-tests were used to identify differences between in-play and out-of-play variables. The findings indicate that total duration, total distance, standing distance, walking distance, and jogging distance were significantly lesser for in-play versus out-of-play (p < 0.001), and extensive tempo distance, intensive tempo distance, sprint distance, and intensity were significantly greater for in-play versus out-of-play (p < 0.001). The results of the present study provides novel insights regarding the in-play competition demands of collegiate American football and provides a different method of analyzing American football.
description: © 2021 Alex Brownell
Calibrating Core Overshooting Parameters With Two-dimensional Hydrodynamical Simulations
Creators: name: Higl, Johann
name: Mueller, Ewald
name: Weiss, Achim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The extent of mixed regions around convective zones is one of the biggest uncertainties in stellar evolution. 1D overshooting descriptions introduce a free parameter ($f_{ov}$) that is in general not well constrained from observations. Especially in small central convective regions the value is highly uncertain due to its tight connection to the pressure scale height. Long-term multi-dimensional hydrodynamic simulations can be used to study the size of the overshooting region and the involved mixing processes. Here we show how one can calibrate an overshooting parameter by performing 2D Maestro simulations of Zero-Age-Main-Sequence stars ranging from $1.3$ to $3.5 M_\odot$. The simulations cover the convective cores of the stars and a large fraction of the surrounding radiative envelope. We follow the convective flow for at least 20 convective turnover times, while the longest simulation covers 430 turnover time scales. This allows us to study how the mixing as well as the convective boundary evolve with time, and how the resulting entrainment can be interpreted in terms of overshooting parameters. We find that increasing the overshooting parameter $f_{ov}$ beyond a certain value in the initial model of our simulations, changes the mixing behaviour completely. This result can be used to put limits on the overshooting parameter. We find $0.010 < f_{ov} < 0.017$ to be in good agreement with our simulations of a $3.5 M_\odot$ mass star. We also identify a diffusive mixing component due to internal gravity waves (IGW) that is active throughout the convectively stable layer, but likely overestimated in our simulations. Furthermore, applying our calibration method to simulations of less massive stars suggests a need for a mass-dependent overshooting description where the mixing in terms of the pressure scale height is reduced for small convective cores.
description: Accepted for publication in A&A
An adaptive model for predicting !Kung reproductive performance : a stochastic dynamic programming approach
Creators: name: Anderies, John Martin
Publisher: name: University of British Columbia
Year: 2009

description: A stochastic dynamic programming model is presented that supports and extends work on the reproductive performance of the !Kung Bushmen (Lee 1972), (Blurton Jones et al. 1978), (Blurton Jones 1986) proposing that !Kung women and their reproductive systems may be maximizing reproductive success. The stochastic dynamic programming approach allows the construction of a "whole-life" model where the physical/environmental constraints along with the uncertainty about future events !Kung women face when making reproductive choices can be explicitly built in. The model makes quantitative predictions for the optimal reproductive strategy assuming !Kung women are maximizing expected lifetime reproduction (ELR) given the physical parameters of !Kung life. The model relies on data gathered from the works cited above and some considerations from simple probability theory. The model predictions for optimal birth spacing match the !Kung reproductive data very well and support earlier findings (Blurton Jones and Sibly 1978), (Blurton Jones 1986). The utility of the dynamic modeling approach is illustrated when the effects of varying certain model parameters are investigated. By including the effect of the mother's mortality which was not included in the Blurton Jones and Sibly (1978) analysis, the model allows for further exploration of the application of an adaptive approach to human reproductive performance. By adding some considerations about the risks of childbirth for the mother the model not only predicts optimal birth spacing which is site specific but also predicts the optimal time for a woman to begin and cease having children. These predictions coincide with menarche and menopause and shed light on their possible adaptive value.