cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The thermodynamics of the Hagedorn mass spectrum
Creators: name: Lavenda, B. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: No bootstrap assumption is needed to derive the exponential growth of the Hagedorn hadron mass spectrum: It is a consequence of the second law applied to a relativistic gas, and the relativistic equivalence between inertial mass and its heat content. The Hagedorn temperature occurs in the limit as the number of particles and their internal energy diverge such that their ratio remains constant. The divergences in the $N$ particle entropy, energy, and free energy result when this condition is imposed upon a mixture of ideal gases, one conserving particle number and the other not. The analogy with a droplet in the presence of vapor explains why the pressure of the droplet continues to increase as the temperature rises finally leading to its break up when the Hagedorn temperature is reached. The adiabatic condition relating the particle volume to the Hagedorn temperature is asymptotic. Since it is a limiting temperature, and not a critical one, there can be no phase transition of whatever kind, and the original density of states used to derive such a phase transition is not thermodynamically admissible because its partition function does not exist.
Universal lattices and Property $τ$
Creators: name: Kassabov, Martin
name: Nikolov, Nikolay
Publisher: name: arXiv
Year: 2005
Subjects: subject: Group Theory (math.GR)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20F69; 20G05; 20H05; 19C20

description: We prove that the universal lattices -- the groups $G=\SL_d(R)$ where $R=\Z[x_1,...,x_k]$, have property $τ$ for $d\geq 3$. This provides the first example of linear groups with $τ$ which do not come from arithmetic groups. We also give a lower bound for the expanding constant with respect to the natural generating set of $G$. Our methods are based on bounded elementary generation of the finite congruence images of $G$, a generalization of a result by Dennis and Stein on $K_2$ of some finite commutative rings and a relative property \emph{T} of $(\SL_2(R) \ltimes R^2, R^2)$.
description: 16 pages
Principal frequency of an ultrashort laser pulse
Creators: name: Neyra, Enrique G.
name: Vaveliuk, Pablo
name: Pisanty, Emilio
name: Maxwell, Andrew S.
name: Lewenstein, Maciej
name: Ciappina, Marcelo F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We introduce an alternative definition of the main frequency of an ultrashort laser pulse, the principal frequency $ω_P$. This parameter is complementary to the most accepted and widely used carrier frequency $ω_0$. Given the fact that these ultrashort pulses, also known as transients, have a temporal width comprising only few cycles of the carrier wave, corresponding to a spectral bandwidth $Δω$ covering several octaves, $ω_P$ describes, in a more precise way, the dynamics driven by these sources. We present examples where, for instance, $ω_P$ is able to correctly predict the high-order harmonic cutoff independently of the carrier envelope phase. This is confirmed by solving the time-dependent Schrödinger equation in reduced dimensions, supplemented with the time-analysis of the quantum spectra, where it is possible to observe how the sub-cycle electron dynamics is better described using $ω_P$. The concept of $ω_P$, however, can be applied to a large variety of scenarios, not only within the strong field physics domain.
description: 11 pages, 6 figures, accepted in PRA
Direct measurements of cosmic rays (TeV and beyond) in space using an ultra-thin homogeneous calorimeter
Creators: name: Dmitrieva, Elena
name: Fedosimova, Anastasiya
name: Lebedev, Igor
name: Temiraliev, Abzal
name: Grushevskaya, Ekaterina
name: Ibraimova, Sayara
name: Abishev, Medeu
name: Kozhamkulov, Tolegen
name: Mayorov, Andrey
name: Spitaleri, Claudio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: An approach for measuring energy of cosmic-ray particles with energies E > 10^12 eV using an ultrathin calorimeter is presented. The method is based on the analysis of the correlation dependence of the cascade size on the rate of development of the cascade process. In order to determine the primary energy, measurements are made based on the number of secondary particles in the cascade, Ne, at two observation levels Z1 and Z2, separated by an absorber layer. Based on the obtained measurements, a correlation analysis of the dependence of logNe(Z1) on the difference dN = log Ne(Z1) - log Ne(Z2) is carried out. The correlation curves (log Ne from dN) in the negative part of the dN axis are almost parallel to each other and practically do not depend on the depth of the cascade development. It makes it possible to determine the primary energy using an ultrathin calorimeter. The best option for applying the method is a calorimeter, which has a unit with a heavy target, leading to the rapid development of the cascade, and a homogeneous measuring and absorption block.
description: 6 pages, 7 figures
Dynamic Pathways for Viral Capsid Assembly
Creators: name: Hagan, Michael F.
name: Chandler, David
Publisher: name: arXiv
Year: 2005
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: We develop a class of models with which we simulate the assembly of particles into T1 capsid-like objects using Newtonian dynamics. By simulating assembly for many different values of system parameters, we vary the forces that drive assembly. For some ranges of parameters, assembly is facile, while for others, assembly is dynamically frustrated by kinetic traps corresponding to malformed or incompletely formed capsids. Our simulations sample many independent trajectories at various capsomer concentrations, allowing for statistically meaningful conclusions. Depending on subunit (i.e., capsomer) geometries, successful assembly proceeds by several mechanisms involving binding of intermediates of various sizes. We discuss the relationship between these mechanisms and experimental evaluations of capsid assembly processes.
description: 13 pages, 13 figures. Submitted to Biophys. J
A Recharge Oscillator Model for Interannual Variability in Venus' Clouds
Creators: name: Kopparla, Pushkar
name: Seshadri, Ashwin
name: Imamura, Takeshi
name: Lee, Yeon Joo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Sulfur dioxide is a radiatively and chemically important trace gas in the atmosphere of Venus and its abundance at the cloud-tops has been observed to vary on interannual to decadal timescales. This variability is thought to come from changes in the strength of convection which transports sulfur dioxide to the cloud-tops, {although} the dynamics behind such convective variability are unknown. Here we propose a new conceptual model for convective variability that links the radiative effects of water abundance at the cloud-base to convective strength within the clouds, which in turn affects water transport within the cloud. The model consists of two coupled equations which are identified as a recharge-discharge oscillator. The solutions of the coupled equations are finite amplitude sustained oscillations in convective strength and cloud-base water abundance on 3-9 year timescales. The characteristic oscillation timescale is given by the geometric mean of the radiative cooling time and the eddy mixing time near the base of the convective clouds.
description: 19 pages, 6 figures, accepted in JGR Planets
Évaluation de bonnes pratiques de gestion de cathéter veineux central dans deux hôpitaux d’un centre hospitalier universitaire
Creators: name: Nagham Léa Khanafer
name: Gardes, Sophie
name: De Santis, Nathalie
name: Liard, Céline
name: Deschamps, Florian
name: Verbist, Pauline
name: Nancey, Stéphane
name: Cotte, Eddy
name: Martin, Olivier
name: Argaud, Laurent
name: Lukaszewicz, Claire
name: Vanhems, Philippe
Publisher: name: Health & Co
Year: 2024
Subjects: Cathéter central
Risque infectieux
Audit Qualité
Audit clinique
Hygiène manuelle
Précautions standard

description: Contexte/objectif. La plupart des infections liées aux dispositifs intravasculaires sont associées aux cathéters veineux centraux (CVC), à l’origine de taux de mortalité et de morbidité importants et de coûts de santé supplémentaires. Les mains du personnel, la flore cutanée du patient, la contamination du cathéter lors de la pose, la colonisation du site d’injection, la technique du rinçage peuvent en être à l’origine. L’objectif de ce travail était de vérifier le respect des mesures de prévention du risque infectieux lors de l’entretien d’un CVC dans un centre hospitalier universitaire. Méthode. Un audit par observation a eu lieu dans les unités d’hygiène de deux hôpitaux des Hospices civils de Lyon en collaboration avec un fabricant de CVC. La grille de l’audit a été élaborée selon les recommandations de la Société française d’hygiène hospitalière. Résultats. Au total, 90 observations d’entretien de CVC ont été réalisées dans 7 unités entre juillet et novembre 2021. Les prérequis à l’hygiène des mains (HDM) étaient respectés par 90% des soignants ; 87% réalisaient une HDM avant la préparation du matériel et 42% la répétaient avant la pose de la perfusion. La date de péremption des produits a été vérifiée dans 14% des situations. La manipulation des voies avec des compresses et un antiseptique alcoolique a été respectée dans 83% des cas. Les soignants portaient des gants dans 46,7% des observations et le rinçage a été réalisé pour 75,6% des entretiens. Discussion. À l’hôpital, un CVC est un facteur de risque infectieux qui peut être prévenu en partie par la formation continue. Les écarts identifiés avec les protocoles feront l’objet de formations ciblées. La prévention des infections associées aux soins doit bénéficier d’outils numériques permettant de faciliter le recueil et l’analyse des données. Les collaborations équilibrées public-privé sont essentielles pour l’amélioration de la qualité des soins.
Integrating the Credit Information Literacy Course into a Learning Community
Creators: name: Johnson, Catherine
name: Arendalkowski, Thomas
name: Shochet, Michael
name: Golowski, April
Publisher: name: Maryland Shared Open Access Repository
Year: 2010
Subjects: Information Literacy
Learning Communities

description: This chapter looks at the value of teaching a for-credit information literacy course within a learning community.  Some of the benefits include the ability to coordinate with other instructors so students have the opportunity to apply their information literacy skills in other classes, and the ability to work with faculty for an extended period of time.
Exciton binding energies in carbon nanotubes from two-photon photoluminescence
Creators: name: Maultzsch, J.
name: Pomraenke, R.
name: Reich, S.
name: Chang, E.
name: Prezzi, D.
name: Ruini, A.
name: Molinari, E.
name: Strano, M. S.
name: Thomsen, C.
name: Lienau, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: One- and two-photon luminescence excitation spectroscopy showed a series of distinct excitonic states in single-walled carbon nanotubes. The energy splitting between one- and two-photon-active exciton states of different wavefunction symmetry is the fingerprint of excitonic interactions in carbon nanotubes. We determine exciton binding energies of 0.3-0.4 eV for different nanotubes with diameters between 0.7 and 0.9 nm. Our results, which are supported by ab-initio calculations of the linear and non-linear optical spectra, prove that the elementary optical excitations of carbon nanotubes are strongly Coulomb-correlated, quasi-one dimensionally confined electron-hole pairs, stable even at room temperature. This alters our microscopic understanding of both the electronic structure and the Coulomb interactions in carbon nanotubes, and has direct impact on the optical and transport properties of novel nanotube devices.
description: 5 pages, 4 figures
The Case of the Lost Pistol
Creators: name: Espinoza, Teodoro
name: Mixco, Mauricio J.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: klb

description: See Kiliwa Texts: "When I have Donned My Crest of Stars" (University of Utah Press, 1983), p. 216 for transcription, segmentation, glossing, and translation of this story.
Constructing a new predictive scaling formula for ITER's divertor heat-load width informed by a simulation-anchored machine learning
Creators: name: Chang, C. S.
name: Ku, S.
name: Hager, R.
name: Churchill, R. M.
name: Hughes, J.
name: Köchl, F.
name: Loarte, A.
name: Parail, V.
name: Pitts, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Understanding and predicting divertor heat-load width $λ_q$ is a critically important problem for an easier and more robust operation of ITER with high fusion gain. Previous predictive simulation data for $λ_q$ using the extreme-scale edge gyrokinetic code XGC1 in the electrostatic limit under attached divertor plasma conditions in three major US tokamaks [C.S. Chang et al., Nucl. Fusion 57, 116023 (2017)] reproduced the Eich and Goldston attached-divertor formula results [formula #14 in T. Eich et al., Nucl. Fusion 53, 093031 (2013); R.J. Goldston, Nucl. Fusion 52, 013009 (2012)], and furthermore predicted over six times wider $λ_q$ than the maximal Eich and Goldston formula predictions on a full-power (Q = 10) scenario ITER plasma. After adding data from further predictive simulations on a highest current JET and highest-current Alcator C-Mod, a machine learning program is used to identify a new scaling formula for $λ_q$ as a simple modification to the Eich formula #14, which reproduces the Eich scaling formula for the present tokamaks and which embraces the wide $λ_q^X{GC}$ for the full-current Q = 10 ITER plasma. The new formula is then successfully tested on three more ITER plasmas: two corresponding to long burning scenarios with Q = 5 and one at low plasma current to be explored in the initial phases of ITER operation. The new physics that gives rise to the wider $λq_^{XGC} is identified to be the weakly-collisional, trapped-electron-mode turbulence across the magnetic separatrix, which is known to be an efficient transporter of the electron heat and mass. Electromagnetic turbulence and high-collisionality effects on the new formula are the next study topics for XGC1.
description: 23 pages, 16 figures, submitted to Physics of Plasmas
Neural Stochastic Contraction Metrics for Learning-based Control and Estimation
Creators: name: Tsukamoto, Hiroyasu
name: Chung, Soon-Jo
name: Slotine, Jean-Jacques E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: We present Neural Stochastic Contraction Metrics (NSCM), a new design framework for provably-stable robust control and estimation for a class of stochastic nonlinear systems. It uses a spectrally-normalized deep neural network to construct a contraction metric, sampled via simplified convex optimization in the stochastic setting. Spectral normalization constrains the state-derivatives of the metric to be Lipschitz continuous, thereby ensuring exponential boundedness of the mean squared distance of system trajectories under stochastic disturbances. The NSCM framework allows autonomous agents to approximate optimal stable control and estimation policies in real-time, and outperforms existing nonlinear control and estimation techniques including the state-dependent Riccati equation, iterative LQR, EKF, and the deterministic neural contraction metric, as illustrated in simulation results.
description: IEEE CONTROL SYSTEMS LETTERS (L-CSS), preprint version, accepted Dec. 2020 (DOI: 10.1109/LCSYS.2020.3046529). https://ieeexplore.ieee.org/document/9302618
Star Formation in a Strongly Magnetized Cloud
Creators: name: Cheng, Yu
name: Tan, Jonathan C.
name: Caselli, Paola
name: Fissel, Laura
name: Arce, Hector G.
name: Fontani, Francesco
name: Goodson, Matthew D.
name: Liu, Mengyao
name: Galitzki, Nicholas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study star formation in the Center Ridge 1 (CR1) clump in the Vela C giant molecular cloud, selected as a high column density region that shows the lowest level of dust continuum polarization angle dispersion, likely indicating that the magnetic field is relatively strong. We observe the source with the ALMA 7m-array at 1.05~mm and 1.3~mm wavelengths, which enable measurements of dust temperature, core mass and astrochemical deuteration. A relatively modest number of eleven dense cores are identified via their dust continuum emission, with masses spanning from 0.17 to 6.7 Msun. Overall CR1 has a relatively low compact dense gas fraction compared with other typical clouds with similar column densities, which may be a result of the strong magnetic field and/or the very early evolutionary stage of this region. The deuteration ratios, Dfrac, of the cores, measured with N2H+(3-2) and N2D+(3-2) lines, span from 0.011 to 0.85, with the latter being one of the highest values yet detected. The level of deuteration appears to decrease with evolution from prestellar to protostellar phase. A linear filament, running approximately parallel with the large scale magnetic field orientation, is seen connecting the two most massive cores, each having CO bipolar outflows aligned orthogonally to the filament. The filament contains the most deuterated core, likely to be prestellar and located midway between the protostars. The observations permit measurement of the full deuteration structure of the filament along its length, which we present. We also discuss the kinematics and dynamics of this structure, as well as of the dense core population.
description: 25 pages, 17 figures, accepted by ApJ
Stochastic quorum percolation and noise focusing in neuronal networks
Creators: name: Orlandi, Javier G.
name: Casademunt, Jaume
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Recent experiments have shown that the spontaneous activity of young dissociated neuronal cultures can be described as a process of highly inhomogeneous nucleation and front propagation due to the localization of noise activity, i.e., noise focusing. However, the basic understanding of the mechanisms of noise build-up leading to the nucleation remain an open fundamental problem. Here we present a minimal dynamical model called stochastic quorum percolation that can account for the observed phenomena, while providing a robust theoretical framework. The model reproduces the first and second order phase--transitions of bursting dynamics and neuronal avalanches respectively, and captures the profound effect metric correlations in the network topology can have on the dynamics. The application of our results to other systems such as in the propagation of infectious diseases and of rumors is discussed.
PINT: A Modern Software Package for Pulsar Timing
Creators: name: Luo, Jing
name: Ransom, Scott
name: Demorest, Paul
name: Ray, Paul S.
name: Archibald, Anne
name: Kerr, Matthew
name: Jennings, Ross J.
name: Bachetti, Matteo
name: van Haasteren, Rutger
name: Champagne, Chloe A.
name: Colen, Jonathan
name: Phillips, Camryn
name: Zimmerman, Josef
name: Stovall, Kevin
name: Lam, Michael T.
name: Jenet, Fredrick A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Over the past few decades, the measurement precision of some pulsar-timing experiments has advanced from ~10 us to ~10 ns, revealing many subtle phenomena. Such high precision demands both careful data handling and sophisticated timing models to avoid systematic error. To achieve these goals, we present PINT (PINT Is Not Tempo3), a high-precision Python pulsar timing data analysis package, which is hosted on GitHub and available on Python Package Index (PyPI) as pint-pulsar. PINT is well-tested, validated, object-oriented, and modular, enabling interactive data analysis and providing an extensible and flexible development platform for timing applications. It utilizes well-debugged public Python packages (e.g., the NumPy and Astropy libraries) and modern software development schemes (e.g., version control and efficient development with git and GitHub) and a continually expanding test suite for improved reliability, accuracy, and reproducibility. PINT is developed and implemented without referring to, copying, or transcribing the code from other traditional pulsar timing software packages (e.g., TEMPO and TEMPO2) and therefore provides a robust tool for cross-checking timing analyses and simulating pulse arrival times. In this paper, we describe the design, usage, and validation of PINT, and we compare timing results between it and TEMPO and TEMPO2.
description: Re-submitted to the Astrophysical Journal at December 31st, 2020
Twisted light-induced spin-spin interaction in a chiral helimagnet
Creators: name: Goto, Yutaro
name: Ishihara, Hajime
name: Yokoshi, Nobuhiko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We theoretically investigate how the orbital angular momentum of light can affect a chiral magnetic order. Here, we consider a metallic chiral helimagnet, which is under stationary radiation of a resonant optical vortex beam. We propose a novel interaction between local spins considering microscopic interactions between an optical vortex and electrons. This vortex-induced interaction modulates the chiral magnetic order in an entirely different way than an external magnetic field does. Our spin modulation technique may pave a route to create a unique topological or chiral structure for future opto-spintronics devices.
Orientational decoherence within molecules and emergence of the molecular shape
Creators: name: Matyus, Edit
name: Cassam-Chenai, Patrick
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The question of classicality is addressed in relation with the shape of the nuclear skeleton of molecular systems. As the most natural environment, the electrons of the molecule are considered as continuously monitoring agents for the nuclei. For this picture, an elementary formalism of decoherence theory is developed and numerical results are presented for few-particle systems. The numerical examples suggest that the electron-nucleus Coulomb interaction is sufficient for inducing a blurred shape with strong quantum coherences in compounds of the lightest elements, H$_2$, D$_2$, T$_2$, and HeH$^+$.
Beyond optimization -- supervised learning applications in relativistic laser-plasma experiments
Creators: name: Lin, Jinpu
name: Qian, Qian
name: Murphy, Jon
name: Hsu, Abigail
name: Ma, Yong
name: Hero, Alfred
name: Thomas, Alexander G. R.
name: Krushelnick, Karl
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We explore the applications of machine learning techniques in relativistic laser-plasma experiments beyond optimization purposes. We predict the beam charge of electrons produced in a laser wakefield accelerator given the laser wavefront change caused by a deformable mirror. Machine learning enables feature analysis beyond merely searching for an optimal beam charge, showing that specific aberrations in the laser wavefront are favored in generating higher beam charges. Supervised learning models allow characterizing the measured data quality as well as recognizing irreproducible data and potential outliers. We also include virtual measurement errors in the experimental data to examine the model robustness under these conditions. This work demonstrates how machine learning methods can benefit data analysis and physics interpretation in a highly nonlinear problem of relativistic laser-plasma interaction.
Zum Entwurf eines Arbeitsdokuments der Basler Versammlung
Creators: name: Weizsäcker, Carl Friedrich Von
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 38 Nr. 1 (1989): Ökumenische Rundschau, Band 38, Heft 1
Adult attachment style, social support, and eating behaviors in university women
Creators: name: Maltby, Georgina Elizabeth
Publisher: name: University of British Columbia
Year: 2009

description: This investigation explored the relationship between the interpersonal factors adult attachment style and quality of emotional and practical social support, and eating behaviours in a sample of 201 female undergraduates. Participants completed the Eating Disorder Examination Questionnaire (EDE-Q; Fairburn & Beglin, 1994), the Relationship Questionnaire (RQ; Bartholomew & Horowitz, 1991), the Relationship Scales Questionnaire (RSQ; Griffin & Bartholomew, 1994), and the Significant Others Scale (SOS; Power, Champion, & Aris, 1988). Moderate positive correlations were demonstrated between disordered eating, insecure adult attachment style, and dissatisfaction with emotional support. Simultaneous multiple regression analyses were computed to explore the influence of the predictor variables (adult attachment style and quality of social support) and the criterion variable (the severity of disordered eating). The results revealed that fearful adult attachment style predicted the severity of disordered eating. Two sets of multivariate analysis of variance (MANOVA) were used to examine mean differences in insecure attachment and quality of social support between the eating category groups of non disordered (n = 28), and disordered eaters (n = 29). Classification of the two eating groups was based on the DSM-IV criteria for an eating disorder (American Psychiatric Association, 1994 ), and the eating disorder continuum model (Scarano & Kalodner-Martin, 1994). Significant mean differences between the two eating groups were observed in adult attachment style but not in quality of social support. The results support the relevance of interpersonal factors to the experience of disordered eating in university women.
การพัฒนาบัตรอิเล็กทรอนิกส์แสดงตัวบุคคลเพื่อลดความซ้ำซ้อน ในการติดต่อราชการไทยยุคใหม่
Creators: name: วัฒนะชัย สืบศิริบุษย์
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตขอนแก่น
Year: 2021
Subjects: การพัฒนา
การลดความซ้ำซ้อน
บัตรอิเล็กทรอนิกส์
ราชการไทยยุคใหม่

description: วารสารวิชาการธรรมทรรศน์, 21, 4, 143-154
Acoustic oscillations in a field-free cavity under solar small-scale bipolar magnetic canopy
Creators: name: Kuridze, D.
name: Zaqarashvili, T. V.
name: Shergelashvili1, B. M.
name: Poedts, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations show the increase of high-frequency wave power near magnetic network cores and active regions in the solar lower atmosphere. This phenomenon can be explained by the interaction of acoustic waves with a magnetic field. We consider small-scale, bipolar, magnetic field canopy structure near the network cores and active regions overlying field-free cylindrical cavities of the photosphere. Solving the plasma equations we get the analytical dispersion relation of acoustic oscillations in the field-free cavity area. We found that the m = 1 mode, where m is azimuthal wave number, cannot be trapped under the canopy due to energy leakage upwards. However, higher ($m \geq 2$) harmonics can be easily trapped leading to the observed acoustic power halos under the canopy.
description: 7 pages, 4 figures, accepted in Annales Geophysicae
Centrally Administered State-Owned Enterprises' Engagement in China's Public-Private Partnerships: A Social Network Analysis
Creators: name: Xiong, Min
name: Whetsell, Travis A.
name: Zhao, Jerry Zhirong
name: Cheng, Shaoming
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: A salient characteristic of China's public-private partnerships (PPPs) is the deep involvement of state-owned enterprises (SOEs), particularly those administered by the central/national government (CSOEs). This paper integrates the approaches of resource-based view and resource-dependency theory to explain CSOEs' involvement in PPP networks. Built upon a network perspective, this paper differs from earlier studies in that it investigates the entire PPP governance network as a whole and all PPP participants' embedded network positions, rather than individual, isolated PPP transactions. Using a novel data source on PPP projects in the period of 2012-2017, social network analysis is conducted to test hypothesized network dominance of CSOEs' in forming PPPs, in light of CSOEs' superior possession of and access to strategic assets. Research findings suggest that CSOEs have a dominant influence and control power in PPP networks across sectors, over time, and throughout geographic space. It is also suggested that policy makers should reduce resource gaps between SOEs and private businesses, and only in so doing, presence and involvement of non-SOEs in China's PPPs can be enhanced.
description: This article has been accepted for publication in Area Development and Policy, published by Taylor & Francis. 41 pages, 9 figures, 3 tables
Heating Cooling Flows with Weak Shock Waves
Creators: name: Mathews, W. G.
name: Faltenbacher, A.
name: Brighenti, F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The discovery of extended, approximately spherical weak shock waves in the hot intercluster gas in Perseus and Virgo has precipitated the notion that these waves may be the primary heating process that explains why so little gas cools to low temperatures. This type of heating has received additional support from recent gasdynamical models. We show here that outward propagating, dissipating waves deposit most of their energy near the center of the cluster atmosphere. Consequently, if the gas is heated by (intermittent) weak shocks for several Gyrs, the gas within 30-50 kpc is heated to temperatures that far exceed observed values. This heating can be avoided if dissipating shocks are sufficiently infrequent or weak so as not to be the primary source of global heating. Local PV and viscous heating associated with newly formed X-ray cavities are likely to be small, which is consistent with the low gas temperatures generally observed near the centers of groups and clusters where the cavities are located.
description: 14 pages; Accepted by ApJ
Fundamental strings and NS5-branes from unstable D-branes in supergravity
Creators: name: Lu, J. X.
name: Roy, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: By using the non-supersymmetric $p$-brane solutions delocalized in arbitrary number of transverse directions in type II supergravities, we show how they can be regarded as interpolating solutions between unstable D$p$-branes (a non-BPS D-brane or a pair of coincident D-brane-antiD-brane) and fundamental strings and also between unstable D$p$-branes and NS5-branes. We also show that some of these solutions can be regarded as interpolating solutions between NS5/$\bar{\rm NS}$5 and D$p$-branes (for $p \leq 5$). This gives a closed string description of the tachyon condensation and lends support to the conjecture that the open string theory on unstable D-branes at the tachyonic vacuum has soliton solutions describing not only the lower dimensional BPS D-branes, but also the fundamental strings as well as the NS5-branes.
description: 11 pages, LaTeX, one statement corrected and one reference added, v3: more details of the solution used is given, version to appear in Phys. Lett. B
Refusal to Repeat Lost Pistol Story
Creators: name: Espinoza, Teodoro
name: Mixco, Mauricio J.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: klb

description: See Kiliwa Texts: "When I have Donned My Crest of Stars" (University of Utah Press, 1983), p. 217 for transcription, segmentation, glossing, and translation of this story.
Eclipsing binaries in the Galactic Bulge: candidates for distance estimates
Creators: name: Groenewegen, M. A. T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The 222~000 I-band light curves of variable stars detected by the OGLE-II survey in the direction of the Galactic Bulge have been searched for eclipsing binaries (EBs). A previously developed code to analyze lightcurve shapes and identify long period variables (LPVs) has been adapted to identify EBs. The parameters in the modified code have been optimised to recover a list of about 140 detached EBs in the Small Magellanic Cloud previously identified in the literature as particularly well suited for distance estimates (and wich have periods \more 0.85 days). The power of the code is demonstrated by identifying 16 and 178 previously uncatalogued EBs in the SMC and LMC, respectively. Among the 222~000 variable stars in the direction of the Galactic Bulge 3053 EBs have been identified. Periods and phased lightcurves are presented.
description: accepted Astronomy and Astrophysics
Repulsively bound atom pairs in an optical lattice
Creators: name: Winkler, K.
name: Thalhammer, G.
name: Lang, F.
name: Grimm, R.
name: Denschlag, J. Hecker
name: Daley, A. J.
name: Kantian, A.
name: Buechler, H. P.
name: Zoller, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Throughout physics, stable composite objects are usually formed via attractive forces, which allow the constituents to lower their energy by binding together. Repulsive forces separate particles in free space. However, in a structured environment such as a periodic potential and in the absence of dissipation, stable composite objects can exist even for repulsive interactions. Here we report on the first observation of such an exotic bound state, comprised of a pair of ultracold atoms in an optical lattice. Consistent with our theoretical analysis, these repulsively bound pairs exhibit long lifetimes, even under collisions with one another. Signatures of the pairs are also recognised in the characteristic momentum distribution and through spectroscopic measurements. There is no analogue in traditional condensed matter systems of such repulsively bound pairs, due to the presence of strong decay channels. These results exemplify on a new level the strong correspondence between the optical lattice physics of ultracold bosonic atoms and the Bose-Hubbard model, a correspondence which is vital for future applications of these systems to the study of strongly correlated condensed matter systems and to quantum information.
description: 5 pages, 4 figures
Non-asymptotically flat, non-dS/AdS dyonic black holes in dilaton gravity
Creators: name: Yazadjiev, Stoytcho S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present exact spherically symmetric dyonic black hole solutions in four-dimensional Einstein-Maxwell-dilaton gravity with Liouville-type potentials for the dilaton field. These solutions have unusual asymptotics--they are neither asymptotically flat nor asymptotically (anti-) de Sitter. The solutions have one or two horizons hiding a curvature singularity at the origin. A class of topological dyonic black holes with topology of a torus is also presented. Some basic properties of the black holes are discussed.
description: LaTex, 10 pages; v2 changes in introduction, new references added; v3 new section with n-dimensional solutions is added
รูปแบบความสัมพันธ์โครงสร้างเชิงเส้นของปัจจัยทางการบริหารที่ส่งผลต่อประสิทธิผลของสถานศึกษา สังกัดสำนักงานเขตพื้นที่การศึกษามัธยมศึกษา จังหวัดกำแพงเพชร
Creators: name: วราภรณ์ จารุเมธีชน
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตขอนแก่น
Year: 2021
Subjects: ความสัมพันธ์โครงสร้างเชิงเส้น
ปัจจัยทางการบริหาร
ประสิทธิผลของสถานศึกษา

description: วารสารวิชาการธรรมทรรศน์, 21, 4, 155-168
HI Signal from Reionization Epoch
Creators: name: Sethi, Shiv K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the all-sky signal in redshifted atomic hydrogen (HI) line from the reionization epoch. HI can be observed in both emission and absorption depending on the ratio of Lyman-$α$ to ionizing flux and the spectrum of the radiation in soft xray. We also compute the signal from pre-reionization epoch and show that within the uncertainty in cosmological parameters, it is fairly robust. The main features of HI signal can be summarized as: (a) The pre-ionized HI can be seen in absorption for $ν\simeq 10\hbox{--}40 \rm MHz$; the maximum signal strength is $\simeq 70\hbox{--}100 \rm mK$. (b) A sharp absorption feature of width $\la 5 \rm MHz$ might be observed in the frequency range $\simeq 50 \hbox{--}100 \rm MHz$, depending on the reionization history. The strength of the signal is proportional to the ratio of the Lyman-$α$ and the hydrogen-ionizing flux and the spectral index of the radiation field in soft xray (c) At larger frequencies, HI is seen in emission with peak frequency between $60\hbox{--}100 \rm MHz$, depending on the ionization history of the universe; the peak strength of this signal is $\simeq 50 \rm mK$. From Fisher matrix analysis, we compute the precision with which the parameters of the model can be estimated from a future experiment: (a) the pre-reionization signal can constrain a region in the $Ω_b h^2$--$Ω_m h^2$ plane (b) HI observed in emission can be used to give precise, $\la 1 %$, measurement of the evolution of the ionization fraction in the universe, and (c) the transition region from absorption to emission can be used as a probe of the spectrum of ionizing sources; in particular, the HI signal in this regime can give reasonably precise measurement of the fraction of the universe heated by soft x-ray photons.
description: 20 pages, 9 figures, accepted for publication in MNRAS
Model independent method for determination of the DIS structure of free neutron
Creators: name: Sargsian, Misak
name: Strikman, Mark
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a model independent procedure for extracting deep-inelastic structure function of "free'' neutron from the electron - deuteron scattering with protons produced in the target fragmentation region of the reaction. This procedure is based on the extrapolation of t, which describes the invariant momentum transfered to the proton, to the unphysical region corresponding to the mass of the struck neutron. We demonstrate that the impulse approximation diagram of the reaction has a pole at this limit with a residue being proportional to the "free" neutron structure function. The method is analogous to that of Chew and Low for extraction of the ``free'' pion-pion and neutron-neutron cross sections from p(pion,p)X and d(n,n)pn reactions respectively. We demonstrate that in the extrapolation the final state interaction amplitudes are smooth functions of $t$ and have negligible contribution in the extracted ``free'' nucleon structure function. We also estimate the range of the recoil nucleon momenta which could be used for successful extrapolation procedure.
description: 15 pages, 4 eps figures
The Kiliwas Visit San Diego
Creators: name: Espinoza, Rodolfo
name: Mixco, Mauricio J.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: klb

description: See Kiliwa Texts: "When I have Donned My Crest of Stars" (University of Utah Press, 1983), p. 251 for transcription, segmentation, glossing, and translation of this story.
ปัจจัยที่มีผลต่อประสิทธิผลการจัดการศึกษาของสถานศึกษาบนพื้นที่สูงที่สอดคล้องกับภูมิวัฒนธรรม กรณีศึกษาโรงเรียนในพื้นที่สูงจังหวัดเชียงใหม่
Creators: name: พระเทอดพิทักษ์ จันทร์โลหิต
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตขอนแก่น
Year: 2021
Subjects: การจัดการศึกษา
พื้นที่สูง
ภูมิวัฒนธรรม

description: วารสารวิชาการธรรมทรรศน์, 21, 4, 169-182
Information transfer in leaky atom-cavity systems
Creators: name: Ghosh, Biplab
name: Majumdar, A. S.
name: Nayak, N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider first a system of two enatangled cavities and a single two-level atom passing through one of them. A ``monogamy'' inequality for this tripartite system is quantitatively studied and verified in the presence of cavity leakage. We next consider the simultaneous passage of two-level atoms through both the cavities. Entanglement swapping is observed between the two-cavity and the two-atom system. Cavity dissipation leads to the quantitative reduction of information transfer though preserving the basic swapping property.
description: Latex, 14 pages, 8 .eps figures
User Modeling in Social Media: Gender and Age Detection
Creators: name: Daneshvar, Saman
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2019
Subjects: Machine Learning
ML
Deep Learning
Natural Language Processing
NLP
User Modeling
Author Profiling
Gender Identification
Age Detection
Social Media
Twitter

description: Author profiling is a field within Natural Language Processing (NLP) that is concerned with identifying various characteristics and demographic factors of authors, such as gender, age, location, native language, political orientation, and personality by analyzing the style and content of their writings. There is a growing interest in author profiling, with applications in marketing and advertising, opinion mining, personalization, recommendation systems, forensics, security, and defense. In this work, we build several classification models using NLP, Deep Learning, and classical Machine Learning techniques that can identify the gender and age of a Twitter user based on the textual contents of their correspondence (tweets) on the platform. Our SVM gender classifier utilizes a combination of word and character n-grams as features, dimensionality reduction using Latent Semantic Analysis (LSA), and a Support Vector Machine (SVM) classifier with linear kernel. At the PAN 2018 author profiling shared task, this model achieved the highest performance with 82.21%, 82.00%, and 80.90% accuracy on the English, Spanish, and Arabic datasets, respectively. Our age classifier was trained on a dataset of 11,160 Twitter users, using the same approach, though the age classification experiments are preliminary. Our Deep Learning gender classifiers are trained and tested on English datasets. Our feedforward neural network consisting of a word embedding layer, flattening, and two densely-connected layers achieves 79.57% accuracy, and our bidirectional Long Short-Term Memory (LSTM) neural network achieves 76.85% accuracy on the gender classification task.
Statistics of Resonances and Delay Times in Random Media: Beyond Random Matrix Theory
Creators: name: Kottos, Tsampikos
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We review recent developments on quantum scattering from mesoscopic systems. Various spatial geometries whose closed analogs shows diffusive, localized or critical behavior are considered. These are features that cannot be described by the universal Random Matrix Theory results. Instead one has to go beyond this approximation and incorporate them in a non-perturbative way. Here, we pay particular emphasis to the traces of these non-universal characteristics, in the distribution of the Wigner delay times and resonance widths. The former quantity captures time dependent aspects of quantum scattering while the latter is associated with the poles of the scattering matrix.
description: 30 pages, 15 figures (submitted to Journal of Phys. A: Math. and General, special issue on "Aspects of Quantum Chaotic Scattering")
A class of completely integrable quantum systems associated with classical root systems
Creators: name: Oshima, Toshio
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 35Q58, 70H06

description: We classify the completely integrable systems associated with classical root systems whose potential functions are meromorphic at an infinite point.
description: 19 pages
Why Thai River Fish Occur Where They are Found
Creators: name: F. William H. Beamish
name: Punnatut Kangrang
name: Patchara Nithirojpakdee
name: Rungthip Plongsesthee
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2012
Subjects: distribution,morphology,physiology,fish associations,S.E. Asia

description: 1, 5, EnvironmentAsia
The spectral form factor for quantum graphs
Creators: name: Bolte, Jens
name: Harrison, Jonathan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider quantum graphs with spin-orbit couplings at the vertices. Time-reversal invariance implies that the bond S-matrix is in the orthogonal or symplectic symmetry class, depending on spin quantum number s being integer or half-integer, respectively. The periodic-orbit expansion of the spectral form factor is shown to acquire additional weights from spin rotations along orbits. We determine the spin contribution to the coefficients in an expansion of the form factor from properties of the representation of the group of spin transformations on the graph. Consistency with the Circular Orthogonal and Circular Symplectic Ensemble, respectively, of random matrices is obtained.
description: 16 pages
Metals Fractionation and Evaluation of their Risk Connected with Urban and Industrial Influx in the Klang River Surface Sediments, Malaysia
Creators: name: Abolfazl Naji
name: Ismail, Ahmad
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2012
Subjects: heavy metals,fractionation,surface sediment,risk assessment code

description: 1, 5, EnvironmentAsia