cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The 3-D shaping of NGC 6741: a massive, fast-evolving Planetary Nebula at the recombination--reionization edge
Creators: name: Sabbadin, F.
name: Benetti, S.
name: Cappellaro, E.
name: Ragazzoni, R.
name: Turatto, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We infer the gas kinematics, diagnostics and ionic radial profiles, distance and central star parameters, nebular photo- ionization model, spatial structure and evolutionary phase of the PN NGC 6741 by means of long-slit high-resolution spectra at nine position angles. NGC 6741 (distance ~2.0 kpc, age ~1400 yr, ionized mass Mion ~0.06 Mo) is a dense (electron density up to 12,000 cm^(-3)), high-excitation, almost- prolate ellipsoid, surrounded by a sharp low-excitation skin (the ionization front), and embedded into a spherical (radius ~ 0.080 pc), almost-neutral, high-density (n(HI) ~7 x 10^3 atoms cm^(-3)) halo containing a large fraction of the nebular mass (Mhalo>0.20 Mo). The kinematics, physical conditions and ionic structure indicate that NGC 6741 is in a deep recombination phase, started about 200 years ago, and caused by the quick luminosity drop of the massive (M*=0.66-0.68 Mo), hot (logT* ~ 5.23) and faint (log L*/Lo ~ 2.75) post--AGB star, which has exhausted the hydrogen-shell nuclear burning and is moving along the white dwarf cooling sequence. The general expansion law of the ionized gas in NGC 6741, Vexp (km s^(-1)=13 x R", fails in the innermost, highest-excitation layers, which move slower than expected. The observed deceleration is ascribable to the luminosity drop of the central star, and appears in striking contrast to recent reports inferring that acceleration is a common property of the Planetary Nebulae innermost layers. Some general implications on the shaping mechanisms of Planetary Nebulae are discussed.
description: 27 pages, 18 figures, accepted for publication in A&A, movies of the reconstructed nebula are available at http://web.pd.astro.it/sabbadin/
Strong interaction of doubly heavy spin-3/2 baryons with light vector mesons
Creators: name: Azizi, K.
name: Olamaei, A. R.
name: Rostami, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We calculate the strong coupling constants among the doubly heavy spin-$ \frac{3}{2} $ baryons $Ξ^*_{QQ}$ and $Ω^*_{QQ}$, with $ Q $ and $ Q' $ being $ c$ or $ b $ quark, with light vector meson by means of the light-cone QCD sum rules. The matrix elements defining these vertices are described by four coupling constants $ g_1$, $ g_2$, $ g_3$, and $ g_4 $. The unwanted pollution coming from the doubly heavy spin-$ \frac{1}{2} $ baryons are removed by a special ordering of Dirac matrices and selection of appropriate Lorentz structures. The strong coupling constants are basic parameters that carry information on the nature of the strong interaction among hadronic multiplets. Investigation of these parameters may help physicists in the construction of the strong potentials among the doubly heavy baryons and light vector mesons. The values obtained for the strong coupling constants may also help experimental groups in analyses of the data produced at various hadron colliders.
description: 29 Pages, 6 Figures and 5 Tables
Evaluation of Asphalt Additive -- Chemkrete
Creators: name: Fleckenstein, L. John
name: Allen, David L.
name: Sharpe, Gary W.
name: Hall, Scott P.
name: Hunsucker, David Q.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: Construction, performance, and cost-effectiveness evaluations of an AC-10 treated with Chemkrete (CTI-101) and an untreated AC-20 are presented. Laboratory tests, and field tests which include marshall stability, density test, repeated load test, road-ratter deflection data, and visual observation are summarized.  Because of the apparent failure of Chemkrete to significantly enhance the performance of the pavement, and the additional cost for the use of Chemkrete, it would not be recommended for further use in the state of Kentucky.
Can We Improve the Preprocessing of Photospheric Vector Magnetograms by the Inclusion of Chromospheric Observations?
Creators: name: Wiegelmann, T.
name: Thalmann, J. K.
name: Schrijver, C. J.
name: Derosa, M. L.
name: Metcalf, T. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The solar magnetic field is key to understanding the physical processes in the solar atmosphere. Nonlinear force-free codes have been shown to be useful in extrapolating the coronal field upward from underlying vector boundary data. However, we can only measure the magnetic field vector routinely with high accuracy in the photosphere, and unfortunately these data do not fulfill the force-free condition. We must therefore apply some transformations to these data before nonlinear force-free extrapolation codes can be self-consistently applied. To this end, we have developed a minimization procedure that yields a more chromosphere-like field, using the measured photospheric field vectors as input. The procedure includes force-free consistency integrals, spatial smoothing, and -- newly included in the version presented here -- an improved match to the field direction as inferred from fibrils as can be observed in, e.g., chromospheric H$α$ images. We test the procedure using a model active-region field that included buoyancy forces at the photospheric level. The proposed preprocessing method allows us to approximate the chromospheric vector field to within a few degrees and the free energy in the coronal field to within one percent.
description: 22 pages, 6 Figure
Musical composition, Wonder, with document
Creators: name: Steenhuisen, Paul Brendan Allister
Publisher: name: University of British Columbia
Year: 2009

description: Wonder is a dense, complex and unconventional sixteen minute composition for orchestra, tape and soprano voice. The tape component is divided into fourteen segments and runs almost continuously throughout the piece, concurrent with the orchestra and the soprano voice. It consists primarily of processed instrumental timbres, but also contains concrete timbres and computer-generated sounds. The soprano voice figures prominently in one section and appears infrequently elsewhere in the music, in brief episodes. The role of the voice is similar to that of the other instruments in the orchestra - it is an important contributor to the articulation of the form through its content and orchestration, but does not function dominantly as a soloist throughout the entire composition. The texts (sung by the soprano and sung/chanted by choir on tape) are passages selected from the poetry of Jalal al-Din Rumi (1207-73), Henri Michaux (1899-1984), and Elizabeth Barrett Browning (1806-1861). Each poetic fragment is concerned with love, magnification, and resonance. The concept of resonance informs every aspect of Wonder, including the derivation of the prime material, the battery of compositional techniques, the form, the content and function of the tape part and the choice of texts. Material for the music was gathered by performing a spectral analysis on unique, short fragments of recorded sound produced on a crotale, a violoncello, a bass trombone and by a soprano voice. The resulting groups of frequencies (one array from each of the four analyzed source timbres) were interpreted in a variety of ways and amplified out of their originally small scale into the raw material on which Wonder is based. Each set of material is presented in its own section of the music, with its original orchestration and characteristic gestural iconography, and is subjected to a plethora of developmental operations, including addition, vibration, movable points of transition/inversionand time-points. Some rhythmic figures are notated within metriproportional brackets identifying their contents as unsynchronized and ad libitum, performed with reference to the barline and active time signature. The interference form manifest in Wonder consists of three distinct strata, each layer mapping related sectional orderings. Formal layers are distinguished by their contrasting durations, and may be active simultaneously or articulated in discontinuous, isolated blocks.
Physics potential of a muon-proton collider
Creators: name: Cheung, Kingman
name: Wang, Zeren Simon
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a muon-proton collider with asymmetrical multi-TeV beam energies and integrated luminosities of $0.1-1$ ab$^{-1}$. With its large center-of-mass energies and yet small Standard Model background, such a machine can not only improve electroweak precision measurements but also probe new physics beyond the Standard Model to an unprecedented level. We study its potential in measuring the Higgs properties, probing the R-parity-violating Supersymmetry, as well as testing heavy new physics in the muon $g-2$ anomaly. We find that for these physics cases the muon-proton collider can perform better than both the ongoing and future high-energy collider experiments.
description: v1: 5 pages plus references, 2 figures, 4 tables, v2: minor changes, accepted for publication in PRD
Laboratory Analysis of Failed Asphaltic Concrete Surface -- US 23, Lawrence County
Creators: name: Fleckenstein, L. John
name: Allen, David L.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: Laboratory analyses of a failed asphaltic concrete surface are presented. Construction procedures, mix design data, density tests, repeated load tests, asphalt extraction tests, and gradation tests are summarized.
Effect of Native Defects on Optical Properties of InxGa1-xN Alloys
Creators: name: Li, S. X.
name: Haller, E. E.
name: Yu, K. M.
name: Walukiewicz, W.
name: Ager, J. W.
name: Wu, J.
name: Shan, W.
name: Lu, Hai
name: Schaff, William J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The energy position of the optical absorption edge and the free carrier populations in InxGa1-xN ternary alloys can be controlled using high energy 4He+ irradiation. The blue shift of the absorption edge after irradiation in In-rich material (x > 0.34) is attributed to the band-filling effect (Burstein-Moss shift) due to the native donors introduced by the irradiation. In Ga-rich material, optical absorption measurements show that the irradiation-introduced native defects are inside the bandgap, where they are incorporated as acceptors. The observed irradiation-produced changes in the optical absorption edge and the carrier populations in InxGa1-xN are in excellent agreement with the predictions of the amphoteric defect model.
Native Aggregates for Skid Resistance
Creators: name: Hall, Scott P.
name: Hunsucker, David Q.
name: Allen, David L.
name: Sharpe, Gary W.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: The objectives of the study were 1) to identify sources of native aggregates with varying histories of skid resistance performance; 2) to evaluate and correlate native aggregate characteristics, processing techniques, and other factors with skid resistance and surface mixture performance; and 3) to provide guidelines for implementation of research findings. Limestone, sandstone, river gravel, and control aggregates (granite, traprock, and slags) were subjected to a battery of tests to determine physical relationships between aggregate type and skid resistance.  Laboratory results were analyzed for correlations among themselves and for correlations with skid number data obtained from pavements containing aggregates involved in the study. No significant correlation could be found between any of the laboratory results and field skid numbers. This was particularly disturbing with reference to the KTRP test. It was thought that it could be used to adequately predict field skid performance. However, preliminary findings have shown no such relationship. It is recommended that the KTRP test be amended to provide a more defined weight loss over time to attempt to explain the behavior of an aggregate's skid resistance over time.
Electric field induced hyperfine level-crossings in (nD)Cs at two-step laser excitation: experiment and theory
Creators: name: Auzinsh, M.
name: Blushs, K.
name: Ferber, R.
name: Gahbauer, F.
name: Jarmola, A.
name: Tamanis, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The pure electric field level-crossing of m_F Zeeman sublevels of hyperfine F levels at two-step laser excitation was described theoretically and studied experimentally for the nD_3/2 states in Cs with n = 7,9, and 10, by applying a diode laser in the first 6S_1/2 to 6P_3/2 step and a diode or dye laser for the second 6P_3/2 to nD_3/2 step. Level-crossing resonance signals were observed in the nD_3/2 to 6P_1/2 fluorescence. A theoretical model was developed to describe quantitatively the resonance signals by correlation analysis of the optical Bloch equations in the case when an atom simultaneously interacts with two laser fields in the presence of an external dc electric field. The simulations described well the experimental signals. The tensor polarizabilities (in Bohr radii cubed) were determined to be 7.45(20) x 10^4 for the 7D_3/2 state and 1.183(35) x 10^6 for the 9D_3/2 state; a well established tensor polarizability value for 10D_3/2 was used to calibrate the electric field. The tensor polarizability value for the 7D_3/2 state differed by ca. 15% from the existing experimentally measured value.
description: 10 pages, 6 figures (10 eps files), revtex4, submitted to Optics Communications
THE PROEMIUM IN HISTORIA APOLLONII:  A POSSIBLE SOURCE FOR THE DECAMERON?
Creators: name: Robins, William
Publisher: name: Università degli Studi di Milano
Year: 2015
Subjects: Historia Apollonii regis Tyri, Boccaccio, Decameron

description: The Proemium in Historia Apollonii is a short introduction to the Historia Apollonii regis Tyri extant in two manuscripts from fourteenth-century Italy. It constitutes an unusual instance of medieval theorizing about the narrative structure of the genre of ancient romance. In this article I present the text of the Proemium, evaluate the evidence it provides about the circulation and reception of the Historia Apollonii, and raise the possibility that this text might lie behind Boccaccio’s description of the narrative structure of the stories recounted in Day Two of the Decameron.
description: Carte romanze, Vol 3, No 2 (2015)
A regime diagram for the slurry F-layer at the base of Earth's outer core
Creators: name: Wong, Jenny
name: Davies, Christopher J.
name: Jones, Christopher A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geophysics (physics.geo-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Seismic observations of a slowdown in P wave velocity at the base of Earth's outer core suggest the presence of a stably-stratified region known as the F-layer. This raises an important question: how can light elements that drive the geodynamo pass through the stably-stratified layer without disturbing it? We consider the F-layer as a slurry containing solid particles dispersed within the liquid iron alloy that snow under gravity towards the inner core. We present a regime diagram showing how the dynamics of the slurry F-layer change upon varying the key parameters: Péclet number ($Pe$), the ratio between advection and chemical diffusion; Stefan number ($St$), the ratio between sensible and latent heat; and Lewis number ($Le$), the ratio between thermal and chemical diffusivity. We obtain four regimes corresponding to stable, partially stable, unstable and no slurries. No slurry is found when the heat flow at the base of the layer exceeds the heat flow at the top, while a stably-stratified slurry arises when advection overcomes thermal diffusion ($Pe \gtrsim Le$) that exists over a wide range of parameters relevant to the Earth's core. Our results estimate that a stably-stratified F-layer gives a maximum inner-core boundary (ICB) body wave density jump of $Δρ_\textrm{bod} \leq 534 \ \mathrm{kg} \mathrm{m}^{-3}$ which is compatible with the lower end of the seismic observations where $280 \leq Δρ_\textrm{bod} \leq 1,100 \ \mathrm{kg} \mathrm{m}^{-3}$ is reported in the literature. With high thermal conductivity the model predicts an inner core age between $0.6$ and $1.2 \ \mathrm{Ga}$, which is consistent with other core evolution models. Our results suggest that a slurry model with high core conductivity predicts geophysical properties of the F-layer and core that are consistent with independent seismic and geodynamic calculations.
The Interpretations For the Low and High Frequency QPO Correlations of X-ray Sources Among White Dwarfs, Neutron Stars and Black Holes
Creators: name: Zhang, C. M.
name: Yin, H. X.
name: Zhao, Y. H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is found that there exists an empirical linear relation between the high frequency $\nhigh$ and low frequency $\nlow$ of quasi-periodic oscillations (QPOs) for black hole candidate (BHC), neutron star (NS) and white dwarf (WD) in the binary systems, which spans five orders of magnitude in frequency. For the NS Z (Atoll) sources, $ν_{high}$ and $ν_{low}$ are identified as the lower kHz QPO frequency and horizontal branch oscillations (HBOs) $\nh$ (broad noise components); for the black hole candidates and low-luminosity neutron stars, they are the QPOs and broad noise components at frequencies between 1 and 10 Hz; for WDs, they are the ``dwarf nova oscillations'' (DNOs) and QPOs of cataclysmic variables (CVs). To interpret this relation, our model ascribes $ν_{high}$ to the Alfvén wave oscillation frequency at a preferred radius and $ν_{low}$ to the same mechanism at another radius. Then, we can obtain $\nlow = 0.08 \nhigh$ and the relation between the upper kHz QPO frequency $\nt$ and HBO to be $\nh \simeq 56 ({\rm Hz}) (\nt/{\rm kHz})^{2}$, which are in accordance with the observed empirical relations. Furthermore, some implications of model are discussed, including why QPO frequencies of white dwarfs and neutron stars span five orders of magnitude in frequency. \\
description: 11 pages, 1 figure, accepted by PASP
Mapping the Kinematics of the Narrow-Line Region in the Seyfert Galaxy NGC 4151
Creators: name: Das, V.
name: Crenshaw, D. M.
name: Hutchings, J. B.
name: Deo, R. P.
name: Kraemer, S. B.
name: Gull, T. R.
name: Kaiser, M. E.
name: Nelson, C. H.
name: Weistrop, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using The Hubble Space Telescope's Space Telescope Imaging Spectrograph HST's STIS, observations of the OIII emission from the narrow-line region (NLR) of NGC 4151 were obtained and radial velocities determined. Five orbits of HST time were used to obtain spectra at five parallel slit configurations, at a position angle of 58 degrees, with spatial resolution 0.2 arcseconds across and 0.1 arcseconds along each slit. A spectral resolving power of ~ 9,000 with the G430M grating gave velocity measurements accurate to ~ 34 km/s. A kinematic model was generated to match the radial velocities, for comparison to previous kinematic models of biconical radial outflow developed for low-dispersion spectra at two slit positions. The new high-resolution spectra permit the measurement of accurate velocity dispersions for each radial-velocity component. The full-width at half-maximum (FWHM) reaches a maximum of 1000 km/s near the nucleus, and generally decreases with increasing distance to about 100 km/s in the extended narrow-line region (ENLR), starting at about 6 arcseconds from the nucleus. In addition to the bright emission knots, which generally fit our model, there are faint high velocity clouds which do not fit the biconical outflow pattern of our kinematic model. These faint clouds occur at the turnover points of the outflowing bright clouds. We suggest possible scenarios that could explain these rogue clouds: (1) backflow resulting from shocks and (2) outflow outside of the bicones, although the latter does not explain how the knots are ionized and accelerated. A comparison of our observations with a high-resolution radio map shows that there is no evidence that the kinematics of the NLR clouds are affected by the radio lobes that comprise the inner jet.
description: 30 pages, 15 figures (some color), accepted for publication in the Astronomical Journal. Downloadable versions of the paper with high resolution figures/images are available here: http://www.chara.gsu.edu/~crenshaw/NGC4151_kinematics.pdf
Renormalization in momentum dependent resummations
Creators: name: Jakovac, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: At finite temperature and in non-equilibrium environments we have to resum perturbation theory to avoid infrared divergences. Since resummation shuffles the perturbative orders, renormalizability is a nontrivial issue. In this paper we demonstrate that one can modify any type of resummations -- even if it is momentum dependent, or it resums higher point functions -- in a way that it is renormalizable with the usual zero temperature counterterms. To achieve this goal we reformulate resummation in form of a renormalization scheme. We apply this technique to perform a 2PI resummation in the six dimensional cubic scalar model in equilibrium.
description: 16 pages revtex4, 4 figures included; typos corrected, references added
RR Lyrae-based calibration of the Globular Cluster Luminosity Function
Creators: name: Di Criscienzo, M.
name: Caputo, F.
name: Marconi, M.
name: Musella, I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We test whether the peak absolute magnitude Mv(TO) of the Globular Cluster Luminosity Function (GCLF) can be used for reliable extragalactic distance determinations. Starting with the luminosity function of the Galactic Globular Clusters listed in Harris catalog, we determine Mv(TO) either using current calibrations of the absolute magnitude Mv(RR) of RR Lyrae stars as a function of the cluster metal content [Fe/H] and adopting selected cluster samples. We show that the peak magnitude is slightly affected by the adopted Mv(RR)-[Fe/H] relation, while it depends on the criteria to select the cluster sample. As for the GCLFs in other external galaxies, using Surface Brightness Fluctuations (SBF) measurements we give evidence that the luminosity functions of the blue (metal-poor) Globular Clusters peak at the same luminosity within ~0.2 mag, whereas for the red (metal-rich) samples the agreement is within ~0.5 mag even accounting for the theoretical metallicity correction expected for clusters with similar ages and mass distributions. Then, using the SBF absolute magnitudes provided by a Cepheid distance scale calibrated on a fiducial distance to LMC (m(LMC)=18.50 mag), we show that the Mv(TO) value of the metal-poor clusters in external galaxies(-7.67+/-0.23 mag) is in excellent agreement with the value of both Galactic (-7.66+/-0.11 mag) and M31 (-7.65+/-0.19 mag)ones.
description: 13 pages, 8 figures, 8 tables, accepted for publication on MNRAS
Evaluating backreaction with the peak model of structure formation
Creators: name: Rasanen, Syksy
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We evaluate the average expansion rate of a universe which contains a realistic evolving ensemble of non-linear structures. We use the peak model of structure formation to obtain the number density of structures, and take the individual structures to be spherical. The expansion rate increases relative to the FRW value on a timescale of 10-100 billion years, because the universe becomes dominated by fast-expanding voids. However, the increase is not rapid enough to correspond to acceleration. We discuss how to improve our treatment. We also consider various qualitative issues related to backreaction.
description: 49 pages, 6 figures. v2: Added clarifications and references. v3: Published version. Corrected typos
OCCURENCE OF DENTAL CARIES
Creators: name: Khabibjonova, Yokutkhon
Publisher: name: Zenodo
Year: 2024

description: Caries is one of the most common diseases throughout the world. Without exaggeration, this pathology can be called “dental enemy of humanity number 1.” This disease affects 93% of the world's population. It was found even in people who lived 5-6 thousand years ago, and today caries in adults is the cause of tooth loss in almost 90% of cases. Moreover, it leads not only to the formation of the well-known “holes”. Subsequently, when the pathological process begins to spread to the surrounding areas, this causes the appearance of periodontitis, and then complete destruction of the tooth, which requires the irreversible removal of its remains and root.
[Individual elicitation sessions on nouns]
Creators: name: Loum, Malick
name: Begay, Kayla
name: David, Oana
name: Heath, Jevon
name: Jenks, Peter
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: srr

description: The first file (039) focuses on people terms.
The second file (041) focuses on cooking implements.
The third file (042) focuses on nouns and verbs.
Quantum Chaos and the Correspondence Principle
Creators: name: Wang, Jiaozi
name: Benenti, Giuliano
name: Casati, Giulio
name: Wang, Wen-ge
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The correspondence principle is a cornerstone in the entire construction of quantum mechanics. This principle has been recently challenged by the observation of an early-time exponential increase of the out-of-time-ordered correlator (OTOC) in classically non-chaotic systems [E.B. Rozenbaum et al., Phys. Rev. Lett. 125, 014101 (2020)], Here we show that the correspondence principle is restored after a proper treatment of the singular points. Furthermore our results show that the OTOC maintains its role as a diagnostic of chaotic dynamics.
description: 7 pages, 7 figures
$1/f^α$ Noise in Spectral Fluctuations of Quantum Systems
Creators: name: Gomez, J. M. G.
name: Relano, A.
name: Retamosa, J.
name: Faleiro, E.
name: Salasnich, L.
name: Vranicar, M.
name: Robnik, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The power law $1/f^α$ in the power spectrum characterizes the fluctuating observables of many complex natural systems. Considering the energy levels of a quantum system as a discrete time series where the energy plays the role of time, the level fluctuations can be characterized by the power spectrum. Using a family of quantum billiards, we analyze the order to chaos transition in terms of this power spectrum. A power law $1/f^α$ is found at all the transition stages, and it is shown that the exponent $α$ is related to the chaotic component of the classical phase space of the quantum system.
description: 4 pages, 5 figures, accepted for publication in Phys. Rev. Lett
Quantum vacuum effects in braneworlds on AdS bulk
Creators: name: Saharian, A. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We review the results of investigations for brane-induced effects on the local properties of quantum vacuum in background of AdS spacetime. Two geometries are considered: a brane parallel to the AdS boundary and a brane intersecting the AdS boundary. For both these cases the contribution in the vacuum expectation value (VEV) of the energy-momentum tensor is separated explicitly and its behavior in various asymptotic regions of the parameters is studied. It is shown that the influence of the gravitational field on the local properties of the quantum vacuum is essential at distance from the brane larger than the AdS curvature radius. In the geometry with a brane parallel to the AdS boundary the VEV of the energy-momentum tensor is considered for scalar field with the Robin boundary condition, for Dirac field with the bag boundary condition and for the electromagnetic field. In the latter case two types of boundary conditions are discussed. The first one is a generalization of the perfect conductor boundary condition and the second one corresponds to the confining boundary condition used in QCD for gluons. For the geometry of a brane intersecting the AdS boundary, the case of a scalar field is considered. The corresponding energy-momentum tensor, apart from the diagonal components, has nonzero off-diagonal component. As a consequence of the latter, in addition to the normal component, the Casimir force acquires a component parallel to the brane.
description: 34 pages, 7 figures, Review article, Section is added on the surface energy-momentum tensor, discussions and references added
Local dynamics in informal settlement development : a case study of Yogyakarta, Indonesia
Creators: name: Setiawan, Bakti
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this research is to explain the processes by which communities develop their settlements outside of formal planning and regulatory frameworks in order to recommend ways these processes could be improved. Drawing on empirical evidence from the development processes of four 'kampung' or informal settlements along the Code River in Yogyakarta, Indonesia, this research examines how, without formal-legal status over their settlements, kampung people gained the resources and security necessary to develop their settlements. The research found that the success of particular kampung communities in developing their settlements depends on the ability of kampung people to develop informal-reciprocal relations with external agencies. Although kampung people enjoy some forms of autonomy over the development process of their settlements and are able to carry out significant improvements to their settlements, their position continues to be weak. They are still very much dependent upon the assistance of the state and external agencies. The nature of policy formulation and implementation in relation to kampung problems is characterized by a fluid and reciprocal series of interrelations among many individuals and agencies, within and outside government. In this context, formal laws and regulations play a secondary role to informal-personal mechanisms. Patron-client relations exist between government officials and kampung people, and these relationships significantly determine the level of government support to each kampung. Such mechanisms are inherently unfair, because only a few kampung people have the capacity to take advantage of these mechanisms. This study concludes that the Indonesian government needs to treat housing and kampung issues as part of a broader social welfare policy and should create more transparent and fairer mechanisms to guarantee equal opportunities for access to urban resources and decision making processes. This study argues that kampung people and their local institutions, the RT and RW, have a potential for playing more active roles in the dynamic process of urban and housing development. This study suggests ways in which kampung people could be further empowered and calls for more active involvement of intermediary agencies, such as NGOs and other voluntary organizations, to assist kampung people in mobilizing their resources and negotiating with other parties. Finally, this study suggests that the government's approaches to the promotion of more formalized and regulated urban and housing development should be carefully re-examined in accordance with the social, cultural, and political contexts of Indonesian society.
A MORE POWERFUL FORCE: EXAMINING NON-ELECTORAL PARTICIPATION DURING CONFLICT IN THE DEEP SOUTH OF THAILAND
Creators: name: Thanikun Chantra
Publisher: name: National Research Council of Thailand
Year: 2019
Subjects: non-electoral participation
peace and conflict
political participation
southern Thailand

description: SOCIAL SCIENCE ASIA : Official Journal of National Research Council of Thailand in Conjunction with the College of Local Administration, Khon Kaen University, 5, 3, 38-54
Equality of Opportunity in Education: A Way to Reduce and Prevent Conflicts in Thai Society
Creators: name: Pradit Chinudomsub
Publisher: name: National Research Council of Thailand
Year: 2019
Subjects: education
resentment
conflict
social class
middle class
lower class
equality
opportunity

description: SOCIAL SCIENCE ASIA : Official Journal of National Research Council of Thailand in Conjunction with the College of Local Administration, Khon Kaen University, 5, 3, 25-37
A novel technique for wide-field polarimetry with a radiotelescope array
Creators: name: McConnell, D.
name: Carretti, E.
name: Subrahmanyan, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the use of the Australia Telescope Compact Array (ATCA) to conduct polarimetric observations of the sky at 5 GHz. The ATCA is normally operated as an interferometer array, but these observations were conducted in a split array mode in which the antenna elements were used as single-dishes with their beams staggered to simultaneously cover a wide area of sky with a resolution of 10 arcmin. The linearly polarized sky radiation was fully characterized from measurements, made over a range of parallactic angles, of the cross correlated signals from the orthogonal linear feeds. We describe the technique and present a polarimetric image of the Vela supernova remnant made as a test of the method. The development of the techniques was motivated by the need for wide-field imaging of the foreground contamination of the polarized component of the cosmic microwave background signal.
description: 13 pages, 2 figures, accepted for publication in AJ
Civil Engineering Applications of Acoustic Emission
Creators: name: Hopwood, Theodore
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: In 1939, a suspension bridge at Portsmouth, Ohio, experienced stress-corrosion cracking of the main-cable wires at anchorage points located at each end of the bridge. Watchmen were placed in the anchor chambers where the fractures had been detected. Subsequently, they reported hearing the sounds of further wire breakage on quiet nights. When this was reported, a decision was made to recable the bridge (1). That was one of the earliest documented instances of the use of the acoustic emission phenomena in a structural application.  Also, in the late 1930's, L. Obert and W. I. Duval at the U. S. Bureau of Mines were performing sonic tests on rock mines. They were surprised to find that stressed rock pillars emitted micro-level sounds (2). Those noises were later termed "rock-talk."  Unlike the early acoustic emission structural monitoring at Portsmouth, the "rock-talk" phenomena has been the subject of continuous ongoing geotechnical research since the late 1930's.  Over the years, much progress has been made in civil engineering applications using acoustic-emission (AE) testing. However, most of those applications are still in developmental stages. Also, some of the past research is contradictory. Therefore, the potential AE user should perform preliminary tests to ascertain the viability of the intended AE procedure. Both laboratory and field tests should be performed under controlled conditions to ensure the applicability and usefulness of that test method before it is employed in service. While this approach is expensive, subsequent cost savings from AE in-service testing, compared to other nondestructive methods, usually justifies those expenditures.  The following three sections discuss the primary applications of acoustic emission in civil engineering. Those are 1) geotechnical, 2) structures, and 3) special component testing. Due to the vast scope of AE research, these reviews are certainly not complete. There are several state-of-the-art AE reviews that provide reference to specific applications (3, 4).
เด็กคือผ้าขาว (?): ความสัมพันธ์ระหว่างตัวละครเด็กกับสังคมที่นำเสนอผ่าน เรื่องสั้นรางวัลซีไรต์
Creators: name: ศรัณย์ภัทร์ บุญฮก
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2020
Subjects: ตัวละครเด็ก
เรื่องสั้น
รางวัลซีไรต์

description: วรรณวิทัศน์, 20, 2, 173-201
Held*in, „Musterkrüppel“ oder „nur“ behindert? – Eine systematische Analyse zu den Darstellungen von Behinderungen im historischen Vergleich ausgewählter literarischer Werke
Creators: name: Jost, Sophie Luisa
Publisher: name: TU Dortmund
Year: 2021
Subjects: subject: Behinderung
subject: Kinder- und Jugendliteratur
subject: Literatur
subject: 430
subject: Jugendliteratur
subject: Kinderliteratur
subject: Behinderung

description: DoLiMette;9. Jg. 2021, Heft 1
Summary of Experimental Bridge Features
Creators: name: Hopwood, Theodore
name: Havens, James H.
name: Courtney, Edgar
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: Experimental bridge features and service problems investigated during this study are reviewed. Those were epoxy-coated reinforcing steel, stay-in-place forms, experimental deck features (rotary compaction and broomed deck finishing), precast segmental bridges, steel-corrosion control methods (weathering steel and hot-dipped galvanizing), microsilica concrete, failures of masonry coatings, and failures of aluminum guardrail-retaining nuts.  Several features including latex and low-slump overlays, epoxycoated reinforcing steel, and broomed deck finishes (for state-built bridges), are now in common use. Most of the other experimental bridge features were performing satisfactorily. A corrosion problem was observed on one weathering steel bridge. Analyses of failures of masonry coatings and the aluminum nuts resulted in identification of the probable causes of the failures and remedial recommendations. The report also contains recommendations for further research.
„Was kann ich eigentlich? Welche Begabungen schlummern in mir?“ Die Geschichte über die vielen Begabungen in jedem von uns. Eine Rezension zum Kinderbuch vielleicht von Kobi Yamada
Creators: name: Weide, Lisanne
Publisher: name: TU Dortmund
Year: 2021
Subjects: subject: Diversität
subject: 430
subject: Vielfalt

description: DoLiMette;9. Jg. 2021, Heft 1
Acoustic Emission Monitoring of Bascule Bridge Components
Creators: name: Hopwood, Theodore
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: During September 4-16, 1986, Kentucky Transportation Research Program (KTRP) personnel conducted a two-week inspection of welding operations on bascule bridge components for the Wisconsin Department of Transportation (WisDOT). Welding was performed by the Phoenix Steel Company at Eau Clair, Wisconsin. The inspection was conducted using acoustic emission (AE) monitoring on in-process welds.  KTRP investigative experience with AE weld monitoring and testing of bridges began in 1973. Since that date, KTRP has performed nine series of laboratory and fabrication shop weld monitoring tests and conducted 20 field tests of bridges using a series of increasingly sophisticated AE devices. Over the past four years, KTRP has had success with the Acoustic Emission Weld Monitor (AEWM) developed by GARD, Inc. of Niles, Illinois. That device was originally intended to monitor in-process welding operations to detect defect formation. KTRP has determined that the unit is also suitable for detecting fatigue-crack growth on in-service bridges. The operation of the AEWM and a summary of KTRP/GARD bridge experience with that device is contained in a technical paper, which is included in the Appendix.
D7.5 NanoSolveIT standalone software application
Creators: name: NanoSolveIT
Publisher: name: Zenodo
Year: 2024

description: Deliverable 7.5 reports the development of a standalone version of the NanoSolveIT cloud platform.Throughout the project, a rigorous approach was taken to establish precise technical requirements forachieving the desired goals of an efficient, user-friendly, secure, sustainable, and scalable platform (eplatform) and infrastructure. One of the critical issues to be addressed in the development of theNanoSolveIT e-platform was ensuring sustainability of the microservices. To address this, the decision wasmade to package the microservices into Docker containers, effectively encapsulating all necessary systemdependencies. By adopting Docker as the containerization tool, the development team ensured broadadaptability, extensive collaboration capabilities, and easy access to software packages through publicrepositories such as https://hub.docker.com/. In this deliverable report, we show how this technology notonly facilitated rapid development of the NanoSolveIT cloud applications but also enabled the deploymentof the services in standalone mode for users who prefer not to share their data to a Cloud.Additionally, the report highlights the critical role of Kubernetes, the de facto platform for numerous opensource projects, as the container orchestration tool for the NanoSolveIT platform. Kubernetes furtherstrengthened the capabilities of the standalone version. It offers unparalleled support and compatibility,allowing NanoSolveIT services to be deployed on any infrastructure running Kubernetes.This deliverable report describes the development of the standalone software application, emphasising themicroservice implementation, and the role of containerization. The resulting application demonstratesefficiency, sustainability, versatility, and compatibility with different computational environments.Advantages of a standalone version of the cloud platform include:1. Flexibility: users can deploy NanoSolveIT applications in different computational environments, suchas on personal computers.2. Accessibility: users can access the platform and its services without an internet connection.3. Security: users have full control over their data and enhanced security, keeping sensitive informationin their own infrastructure.4. Scalability: the platform can be scaled according to the user's needs, and can be deployed ondifferent hardware configurations without relying on external cloud resources.
Saures: Backgrounds machen Leute: Von den Hintergründen und Einblicken in die Identitätskonstruktionen bei Online- Lehre
Creators: name: Marci-Boehncke, Gudrun
Publisher: name: TU Dortmund
Year: 2021
Subjects: subject: Online-Lehre
subject: Identität
subject: Lehre im Lockdown
subject: 430

description: DoLiMette;9. Jg. 2021, Heft 1
Reliability Assessment of High-Risk Steel Bridges by Nondestructive Test Methods
Creators: name: Hopwood, Theodore
name: Oka, Vishwas G.
name: Deen, Robert C.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: Fatigue-crack related failures of high-risk (fracture-critical) steel bridges may be prevented through application of nondestructive tests (NDT). Economical reliability assessment of those structures requires 1) application of a suitable NDT method, 2) testing of fatigue-susceptible members, and 3 ) periodic retests of those members to preclude problems with growing or previously undetected flaws.  Six conventional NDT techniques were tested in the laboratory using buttweld configured specimens having intentionally embedded cracks. Those NDT methods were 1) visual inspection, 2) magnetic-particle testing, 3) dyepenetrant testing, 4) florescent-enhanced surface testing, 5 ) eddy-current testing, and 6) ultrasonic testing. The other NDT methods provided better crack-detection capabilities than visual inspection. Visual inspections by different personnel produced low detection rates. Tests using the florescent magnetic-particle method missed several indications because of marginal test conditions. The other NDT methods detected all cracks.  Laboratory tests revealed that the visually enhanced NDT methods could play useful roles in bridge inspection. Magnetic-particle and dye-penetrant testing were slow, but they would be beneficial for spot bridge inspections. Eddy-current testing was found to be the fastest NDT method and would be best for large-scale bridge inspections. Ultrasonic testing was useful for flaw sizing. Modern digital ultrasonic flaw detectors offer advantages in calibration and data recording that make them more advantageous than conventional units for large-scale bridge tests.  A stand-alone, microcomputer-based data-acquisition and data processing system was designed and assembled to assist highway personnel in planning and prioritizing bridge inspections. It may be used to acquire live-load strain-gage readings from selected bridge members and to store the data in digital form. The data may be processed by seven sequential computer programs to yield 1) digitized stresses, 2) stress range-cycle histograms, 3) Miner equivalent stress ranges, 4) root-mean-square equivalent stress ranges, 5) weighted equivalent stress ranges from several tests, and 6) predictions of fatigue lives of structural members based on the AASHTO fatigue design curve for specific structural members.  The system has been tested and is capable of providing crack-initiation data useful for scheduling or prioritizing nondestructive inspections of bridges. Histogram stress data derived from the programs may be used with commercially available fracture-mechanics software to predict growth rates of fatigue cracks and critical crack sizes for failure. That information may be mused to select the appropriate NDT method and periodic reinspection interval for fatigue-prone bridge details.