cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Singularity avoidance and time in quantum gravity
Creators: name: Kreienbuehl, Andreas
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the quantization of a Friedmann-Robertson-Walker universe. We derive a reduced square root Hamiltonian by choosing the scale factor as time variable and quantize the theory using the Dirac method. From the resulting spinor equation we show that there is no semiclassical wave packet that avoids the Big Bang singularity. Our work raises the question concerning the relationship between the choice of time and singularity avoidance.
description: 8 pages, 2 figures, typos corrected
Neutrino masses from higher than d=5 effective operators
Creators: name: Bonnet, Florian
name: Hernandez, Daniel
name: Ota, Toshihiko
name: Winter, Walter
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the generation of small neutrino masses from effective operators higher than dimension five, which open new possibilities for low scale see-saw mechanisms. In order to forbid the radiative generation of neutrino mass by lower dimensional operators, extra fields are required, which are charged under a new symmetry. We discuss this mechanism in the framework of a two Higgs doublet model. We demonstrate that the tree level generation of neutrino mass from higher dimensional operators often leads to inverse see-saw scenarios in which small lepton number violating terms are naturally suppressed by the new physics scale. Furthermore, we systematically discuss tree level generalizations of the standard see-saw scenarios from higher dimensional operators. Finally, we point out that higher dimensional operators can also be generated at the loop level. In this case, we obtain the TeV scale as new physics scale even with order one couplings.
description: 22 pages, 3 figures, 2 tables. Some references added
Magnetism, entropy, and the first nano-machines
Creators: name: Mitra-Delmotte, Gargi
name: Mitra, A. N.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The efficiency of bio-molecular motors stems from reversible interactions $\sim$ $k_B T$; weak bonds stabilizing intermediate states (enabling $direct$ conversion of chemical into mechanical energy). For their (unknown) origins, we suggest that a magnetically structured phase (MSP) formed via accretion of super-paramagnetic particles (S-PPs) by magnetic rocks on the Hadean Ocean floor had hosted motor-like diffusion of ligand-bound S-PPs through its template-layers; its ramifications range from optical activity to quantum coherence. A gentle flux gradient offers both detailed-balance breaking non-equilibrium and $asymmetry$ to a magnetic dipole, undergoing infinitesimal spin-alignment changes. Periodic perturbation of this background by local H-fields of template-partners can lead to periodic high and low-template affinity states, due to the dipole's magnetic degree of freedom. An accompanying magnetocaloric effect allows interchange between system-entropy and bath temperature. We speculate on a magnetic reproducer in a setting close to the mound-scenario of Russell and coworkers that could evolve bio- ratchets.
description: 17 pages, 1 figure
PCA Tomography and its application to nearby galactic nuclei
Creators: name: Steiner, J. E.
name: Menezes, R. B.
name: Ricci, T. V.
name: Oliveira, A. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: With the development of modern technologies such as IFUs, it is possible to obtain data cubes in which one produces images with spectral resolution. To extract information from them can be quite complex, and hence the development of new methods of data analysis is desirable. We briefly describe a method of analysis of data cubes (data from single field observations, containing two spatial and one spectral dimension) that uses Principal Component Analysis (PCA) to express the data in the form of reduced dimensionality, facilitating efficient information extraction from very large data sets. We applied the method, for illustration purpose, to the central region of the low ionization nuclear emission region (LINER) galaxy NGC 4736, and demonstrate that it has a type 1 active nucleus, not known before. Furthermore, we show that it is displaced from the centre of its stellar bulge.
description: 4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
Enfoque sistêmico na gestão ambiental
Creators: name: Lafourcade Asmus, Milton
Publisher: name: Seminário em apoio ao Rio Grande do Sul, IVIDES.org, remoto, 25 set. 2024.
Year: 2024

description: Apresentação da palestra Enfoque sistêmico na gestão ambiental,  de autoria do Prof. Dr. Milton Lafourcade Asmus (FURG, Brasil). A palestra foi ministrada no Seminário em apoio ao Rio Grande do Sul, promovido no dia 25 de setembro de 2024, pelo Instituto Virtual para o Desenvolvimento Sustentável - IVIDES.org, em parceria com os capítulos YouthMappers UERGS e YouthMappers Unipampa. Patrocínio do Wiki Apoia/ Wiki Movimento Brasil. Licença: CC-BY-SA 4.0 International. As imagens nesta apresentação podem ter licenças diferentes. https://ivides.org/seminario-rs

Link para o vídeo: https://www.youtube.com/live/fD5kp_j6w_Y
description: Presentation of the lecture Systemic approach to environmental management by Prof. Dr. Milton Lafourcade Asmus (FURG, Brazil), in Portuguese. The lecture was given at the Seminar in support of Rio Grande do Sul, promoted on September 25, 2024, by the Virtual Institute for Sustainable Development - IVIDES.org, in partnership with the YouthMappers UERGS and YouthMappers Unipampa chapters. Sponsored by Wiki Apoia/Wiki Movimento Brasil. License: CC-BY-SA 4.0 International. Some figures can present different license. https://ivides.org/seminario-rs

Link to video: https://www.youtube.com/live/fD5kp_j6w_Y
Non-Equilibrium Many-Body Dynamics Following A Quantum Quench
Creators: name: Vyas, Manan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study analytically and numerically the non-equilibrium dynamics of an isolated interacting many-body quantum system following a random quench. We model the system Hamiltonian by Embedded Gaussian Orthogonal Ensemble (EGOE) of random matrices with one plus few-body interactions for fermions. EGOE are paradigmatic models to study the crossover from integrability to chaos in interacting many-body quantum systems. We obtain a generic formulation, based on spectral variances, for describing relaxation dynamics of survival probabilities as a function of rank of interactions. Our analytical results are in good agreement with numerics.
description: 6 pages, 2 figures
การสกัดพืชสมุนไพรโดยการสกัดด้วยของไหลความดันสูงHerbal Extraction by Pressurized Liquid Extraction (PLE)
Creators: name: ชุติมา ลิ้มมัทวาภิรัติ์
name: สนทยา ลิ้มมัทาภิรัติ์
Publisher: name: คณะเภสัชศาสตร์ ม.ศิลปากร/โรงพิมพ์ ม.ศิลปากร
Year: 2555
Subjects: การสกัดด้วยของไหลความดันสูง,การสกัดพืชสมุนไพร, ตัวทำละลายอินทรีย์, Pressurized liquid extraction, herbal extraction, organic solvent

description: 1 (มค.-ธค.), 7, ไทยไภษัชยนิพนธ์
Proposta de Simulador de Coordenac¸ao de Curso utilizando Educação 4.0: Mapeamento Sistemático da Literatura
Creators: name: Researcher, Blinded
Publisher: name: figshare
Year: 2023
Subjects: Teacher education and professional development of educators

description: Proposta de Simulador de Coordenac¸ao de Curso utilizando Educação 4.0: Mapeamento Sistemático da Literatura
Anticrossing in the PL spectrum of light-matter coupling under incoherent continuous pumping
Creators: name: Gonzalez-Tudela, A.
name: del Valle, E.
name: Tejedor, C.
name: Laussy, F. P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We compare the observed splitting in the PL spectrum of a strongly coupled light-matter system, with the splitting of its dressed modes. In the presence of non-negligible decoherence, the two may differ considerably. Whereas the dressed mode splitting has a simple expression, the observed splitting has no general analytical expression in terms of radicals of the system parameters.
description: PLMCN9 conference proceedings, in editor style
FeTe as a candidate material for new iron-based superconductor
Creators: name: Mizuguchi, Y.
name: Tomioka, F.
name: Tsuda, S.
name: Yamaguchi, T.
name: Takano, Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Tetragonal FeSe is a superconductor with a transition temperature Tc of 8 K and shows a huge enhancement of Tc with applying pressure. Tetragonal FeTe has a structure very analogous to superconducting FeSe, but does not show superconducting transition. We investigated the pressure effect of resistivity on FeTe. The resistivity at room temperature decreased with increasing pressure. An anomaly in resistivity around 80 K shifted towards a lower temperature with increasing pressure.
description: 15 pages, 5 figures, ISS2008
Iniciativas de mapeamento colaborativo e comunicação por mapas, no suporte à gestão de desastre: enchentes de maio no Rio Grande do Sul
Creators: name: Silva da Silva, Tatiana
Publisher: name: Seminário em apoio ao Rio Grande do Sul, IVIDES.org, remoto, 25 set. 2024.
Year: 2024

description: Apresentação da palestra Iniciativas de mapeamento colaborativo e comunicação por mapas, no suporte à gestão de desastre: enchentes de maio no Rio Grande do Sul,  pela Profa. Dra. Tatiana Silva da Silva (UFRGS, Brasil). A palestra foi ministrada no Seminário em apoio ao Rio Grande do Sul, promovido no dia 25 de setembro de 2024, pelo Instituto Virtual para o Desenvolvimento Sustentável - IVIDES.org, em parceria com os capítulos YouthMappers UERGS e YouthMappers Unipampa. Patrocínio do Wiki Apoia/ Wiki Movimento Brasil. Licença: CC-BY-SA 4.0 International. As imagens nesta apresentação podem ter licenças diferentes. https://ivides.org/seminario-rs.

Link para o vídeo: https://www.youtube.com/live/fD5kp_j6w_Y

 
description: Presentation of the lecture Collaborative mapping and map communication initiatives in support of disaster management: May floods in Rio Grande do Sul, by Prof. Dr. Tatiana Silva da Silva (UFRGS, Brazil). The lecture was given in Portuguese, at the Seminar in support of Rio Grande do Sul, held on September 25, 2024, by the Virtual Institute for Sustainable Development - IVIDES.org, in partnership with the YouthMappers UERGS and YouthMappers Unipampa chapters. Sponsored by Wiki Apoia/Wiki Movimento Brasil. License: CC-BY-SA 4.0 INternational. Some figures can present different license. https://ivides.org/seminario-rs.

Link to video: https://www.youtube.com/live/fD5kp_j6w_Y
The rules of 4-dimensional perspective: How to implement Lorentz transformations in relativistic visualization
Creators: name: Hamilton, Andrew J. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper presents a pedagogical introduction to the issue of how to implement Lorentz transformations in relativistic visualization. The most efficient approach is to use the even geometric algebra in 3+1 spacetime dimensions, or equivalently complex quaternions, which are fast, compact, and robust, and straightforward to compose, interpolate, and spline. The approach has been incorporated into the Black Hole Flight Simulator, an interactive general relativistic ray-tracing program developed by the author.
description: 13 pages, 2 figures. Invited keynote lecture at the ENGAGE 2021 workshop at the Computer Graphics International CGI 2021 conference, 6-10 Sep 2021
Hyperthermia HeLa cell treatment with silica coated manganese oxide nanoparticles
Creators: name: Villanueva, A
name: de la Presa, P
name: Alonso, JM
name: Rueda, T
name: Martinez, A
name: Crespo, P
name: Morales, MP
name: Fernandez, MA Gonzalez
name: Valdes, J
name: Rivero, G
Publisher: name: arXiv
Year: 2009
Subjects: subject: Medical Physics (physics.med-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: The effect of a high frequency alternating magnetic field on HeLa tumour cells incubated with ferromagnetic nanoparticles of manganese oxide perovskite La0.56(SrCa)0.22MnO3 have been studied. The particles were subjected to a size selection process and coated with silica to improve their biocompatibility. The control assays made with HeLa tumour cells showed that cell survival and growth rate were not affected by the particle internalization in cells, or by the electromagnetic field on cells without nanoparticles. However, the application of an alternating electromagnetic field to cells incubated with this silica coated manganese oxide induced a significant cellular damage that finally lead to cell death by an apoptotic mechanism. Cell death is triggered even thought the temperature increase in the cell culture during the hyperthermia treatment is lower than 0.5 C.
description: Journal of Physical Chemistry C
Turbulent energy dissipation in the Atlantic equatorial undercurrent
Creators: name: Crawford, William Robert
Publisher: name: University of British Columbia
Year: 2010

description: A free-fall oceanographic instrument has been used to measure vertical microstructure scale gradients of horizontal velocity, temperature and electrical conductivity. The velocity gradients, or shears, were measured at scales between 3 and 40 cm by an airfoil shear probe whose specifications and calibration procedure are discussed. Data collected in the equatorial Atlantic in July 1974 indicated a consistent pattern of turbulence near the velocity core of the Atlantic Equatorial Undercurrent. (The velocity core is the region of maximum speed. ) The most intense turbulence was found above the velocity core of the undercurrent. Turbulence in the velocity core was weak and intermittently spaced. Below the core, near the base of the thermocline, moderately intense turbulence was found. The rate of viscous dissipation of turbulent energy has been estimated from the shear measurements, and typical values were 3x10 ⁻³ cm² sec ⁻³ above the velocity core. Spectra of the shears have been computed. At small wavelengths the measured spectral coefficients fall below the universal Kolmogoroff spectrum. This discrepancy between the two spectra is attributed to spatial averaging of velocity fluctuations by the shear probe. The estimates of viscous dissipation include a correction for this spatial averaging. An energy balance has been determined for the turbulent velocity fluctuations. Above and below the core the basic balance is local production of turbulent energy equals local dissipation, and this balance gives a vertical eddy viscosity of order 10 cm² sec ⁻¹ above the core. The equation of the energy balance of the average motion has been vertically integrated at the equator where meridional terms are assumed small. In the South Equatorial Current the rate of energy gain from the average zonal wind stress is balanced by the rate of energy loss to the zonal pressure gradient plus the rate of dissipation. In the undercurrent, above the core, the rate of energy gain from the zonal pressure gradient equals the rate of dissipation within the uncertainty of the measurements, and the advection term is small but not negligible.
Physical properties of the 0.94-day period transiting planetary system WASP-18
Creators: name: Southworth, John
name: Hinse, T. C.
name: Dominik, M.
name: Glitrup, M.
name: Jorgensen, U. G.
name: Liebig, C.
name: Mathiasen, M.
name: Anderson, D. R.
name: Bozza, V.
name: Browne, P.
name: Burgdorf, M.
name: Novati, S. Calchi.
name: Dreizler, S.
name: Finet, F.
name: Harpsoe, K.
name: Hessman, F.
name: Hundertmark, M.
name: Maier, G.
name: Mancini, L.
name: Maxted, P. F. L.
name: Rahvar, S.
name: Ricci, D.
name: Scarpetta, G.
name: Skottfelt, J.
name: Snodgrass, C.
name: Surdej, J.
name: Zimmer, F.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present high-precision photometry of five consecutive transits of WASP-18, an extrasolar planetary system with one of the shortest orbital periods known. Through the use of telescope defocussing we achieve a photometric precision of 0.47 to 0.83 mmag per observation over complete transit events. The data are analysed using the JKTEBOP code and three different sets of stellar evolutionary models. We find the mass and radius of the planet to be M_b = 10.43 +/- 0.30 +/- 0.24 Mjup R_b = 1.165 +/- 0.055 +/- 0.014 Rjup (statistical and systematic errors) respectively. The systematic errors in the orbital separation and the stellar and planetary masses, arising from the use of theoretical predictions, are of a similar size to the statistical errors and set a limit on our understanding of the WASP-18 system. We point out that seven of the nine known massive transiting planets (M_b > 3 Mjup) have eccentric orbits, whereas significant orbital eccentricity has been detected for only four of the 46 less massive planets. This may indicate that there are two different populations of transiting planets, but could also be explained by observational biases. Further radial velocity observations of low-mass planets will make it possible to choose between these two scenarios.
description: 6 pages, 2 figures, 4 tables. Accepted for publication in ApJ. Data can be obtained from http://www.astro.keele.ac.uk/~jkt/
Catching the Wave: Modernism and the Maritime Aesthetic
Creators: name: Foster, Duncan
Publisher: name: University of Lincoln
Year: 2023

description: Maritime modernism is defined unambiguously by the structures and strictures of Empire in the late nineteenth and early twentieth centuries. The ocean was a facilitator of national and imperial expansion and development in a time where modernist texts were both critiquing and complicit in developing our understanding of maritime colonial rule. This thesis offers an innovative perspective upon Modernism’s interactions with the maritime situation of that period and explores how Modernist authors’ experiments and engagement with maritime settings repeatedly challenges our ways of reading the sea and the interrelation of modern geopolitics. Seas and oceans were shaped by the codification and re-definition of aqueous and archipelagic material space under imperial maritime power. Some modernist authors, such as Virginia Woolf, were products of that same imperial structure, coming from a privileged class. Others, such as James Joyce, grew up as colonial subjects, or, in the case of Joseph Conrad, left one imperial structure for another.This original study reframes Woolf and Joyce as writers of the maritime rather than the metropolis, joining Conrad in engaging with the seascape as a place of community, intimacy and memory as well as challenging it as an ever-changing geo-political and technologically evolving space: Woolf places her middle-class British subjects at the periphery of imperial space in To The Lighthouse (1927); Joyce’s characters in Ulysses (1922) are products of the British colonial system; Conrad’s work was requested and then rejected by the British Admiralty. All three authors’ works display the contradictory nature of their position within the declining British imperial structure. Their work reflected upon the imperial reorganization of the world’s oceans and the islands and countries which existed within them. Furthermore, my reading of Conrad’s Last Essays (1926), is of a neglected work that has not been read previously through a modernist lens. Last Essays provides a crucial glimpse into Conrad’s engagement with the late imperialist period and my chapter on this text finally aligns this work with that of other Modernist authors of the era. Similarly, for the first time, the expedition narratives of polar explorers in the first quarter of the twentieth century are read as modernist, allowing a pioneering examination of the fractured perspectives and internal journeys which are a feature of polar exploration, providing a crucial link between writers of modernism and the explorers’ own works. The originality of this thesis lies in its writing about the sea as a medium whereby these writers use the Modernist visual aesthetic of colour and light combined with an embracing of technology to examine fluid perspectives and alternate ways of seeing. This thesis offers a unique insight into a period where maritime imperial rhetoric was contested by Modernist writers, and how that rhetoric, in its desire to preserve the structure of empire, contributed to its decline.
Sudden death of distillability in qutrit-qutrit systems
Creators: name: Song, Wei
name: Chen, Lin
name: Zhu, Shi-Liang
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce the concept of distillability sudden death, i.e., free entangled states can evolve into non-distillable (bound entangled or separable) states in finite time under local noise. We describe the phenomenon through a specific model of local dephasing noise and compare the behavior of states in terms of the Bures fidelity. Then we propose a few methods to avoid distillability sudden death of states under (general) local dephasing noise, so that free entangled states can be robust against decoherence. Moreover, we find that bound entangled states are unstable in the limit of infinite time.
description: published version, small changes in Sec.III, 6 pages, 3 figures
Toward measuring the spin of obscured supermassive black holes: a critical assessment with disk megamasers
Creators: name: Masini, Alberto
name: Celotti, Annalisa
name: Campitiello, Samuele
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Mass and spin are two fundamental properties of astrophysical black holes. While some established, indirect methods are adopted to measure both these properties of active galactic nuclei (AGN) when viewed relatively face-on, very few suggested methods exist to measure these properties when AGN are viewed highly inclined and potentially obscured by large amounts of gas. In this context, we explore the accuracy and performance of a recently proposed method to estimate the spin of AGN through fitting their accretion disk spectral energy distribution, when adapted for highly inclined and obscured systems, and in particular to a sample of six, local water megamasers. For these sources, both the accretion rate and inclination angle are known, allowing us to rely only on the AGN bolometric luminosity to infer their spin. Using the bolometric luminosity as a proxy for the accretion disk peak luminosity, we derive the expected bolometric luminosity as a function of spin. Then, we measure the bolometric luminosity of each source through X-ray spectroscopy, and compare it with the expected value to constrain the spin of the AGN. The quality of the constraints depend critically on the accuracy of the measured bolometric luminosity, which is difficult to estimate in heavily obscured systems. Three out of six sources do not show consistency between the expected and measured bolometric luminosities, while other three (four, when considering the [OIII] line as tracer of the bolometric luminosity) are formally consistent with high spin values. Our results suggest that this method, although promising (and possibly considered as a future calibrator for other methods) needs better observational data and further theoretical modeling to be successfully applied to obscured AGN and to infer robust results.
description: Accepted for publication in A&A. 8 pages, 2 figures, 3 tables
Quale insegnamento dalla "epopea" dell'amianto?
Creators: name: Avio, Alberto
name: Barbini, Francesco Maria
name: Bertazzi, Pier Alberto
name: Carnevale, Francesco
name: Maggi, Bruno
name: Rulli, Giovanni
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: IUS/07 Diritto del lavoro
M-FIL/02 Logica e filosofia della scienza
M-PSI/06 Psicologia del lavoro e delle organizzazioni
MED/02 Storia della medicina
MED/44 Medicina del lavoro
SECS-P/08 Economia e gestione delle imprese
SECS-P/10 Organizzazione aziendale
SPS/09 Sociologia dei processi economici e del lavoro

description: What lessons can be drawn from the “epic history” of asbestos? How this emblematic case can help the reflection on prevention in the workplace? The subjects of primary prevention, risk management, laws and regulation protecting safety and health in the workplace are discussed from different points of view, such as history of medicine, epidemiology, occupational and preventive medicine, labour law, organization theory, science methodology. These collected papers are aimed at proposing prevention strategies allowing to avoid mistakes and pitfalls like the ones that characterized the history of asbestos.
Probing cool giants in unresolved galaxies using fluctuation eigenspectra: a demonstration using high-resolution MUSE observations of NGC 5128
Creators: name: Smith, Russell J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: I describe and demonstrate a new approach to using spectroscopic data to exploit Poisson sampling fluctuations in unresolved stellar populations. The method is introduced using spectra predicted for independent samples of stars from a 10 Gyr population a using a simple stochastic spectral synthesis model. A principal components analysis shows that >99 per cent of the spectral variation in the red-optical can be attributed to just three "fluctuation eigenspectra", which can be related to the number of giant stars present in each sample, and their distribution along the isochrone. The first eigenspectrum effectively encodes the spectrum of the coolest giant branch stars, and is equivalent to the ratio between high- and low-flux pixels discussed in previous literature. The second and third eigenspectra carry higher-order information from which the giant-star spectral sequence can in principle be reconstructed. I demonstrate the method in practice using observations of part of NGC 5128, obtained with the MUSE narrow-field adaptive optics mode. The expected first eigenspectrum is easily recovered from the data, and closely matches the model results except for small differences around the Ca II triplet. The second eigenspectrum is below the noise level of the present observations. A future application of the method would be to the cores of giant ellipticals to probe the spectra of cool giant stars at high metallicity and with element abundance patterns not accessible in the Milky Way.
description: MNRAS accepted
The Two-Point Correlation of 2QZ Quasars and 2SLAQ LRGs: From a Quasar Fueling Perspective
Creators: name: Norman, Dara J.
name: DePropris, Roberto
name: Ross, Nicholas P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Public data from the 2dF quasar survey (2QZ) and 2dF/SDSS LRG & QSO (2SLAQ), with their vast reservoirs of spectroscopically located and identified sources, afford us the chance to more accurately study their real space correlations in the hopes of identifying the physical processes that trigger quasar activity. We have used these two public databases to measure the projected cross correlation, $ω_p$, between quasars and luminous red galaxies. We find the projected two-point correlation to have a fitted clustering radius of $r_0, = 5.3 \pm 0.6 $ and a slope, $γ=1.83 \pm 0.42 $ on scales from 0.7-27$h^{-1}$Mpc. We attempt to understand this strong correlation by separating the LRG sample into 2 populations of blue and red galaxies. We measure at the cross correlation with each population. We find that these quasars have a stronger correlation amplitude with the bluer, more recently starforming population in our sample than the redder passively evolving population, which has a correlation that is much more noisy and seems to flatten on scales $< 5h^{-1}$Mpc. We compare this result to published work on hierarchical models. The stronger correlation of bright quasars with LRGs that have undergone a recent burst of starformation suggests that the physical mechanisms that produce both activities are related and that minor mergers or tidal effects may be important triggers of bright quasar activity and/or that bright quasars are less highly biased than faint quasars.
description: Accepted for publication in ApJ
Um Mapeamento Sistemático da Literatura sobre AmbientesDigitais para o Treinamento de Profissionais da Educação
Creators: name: Researcher, Blinded
Publisher: name: figshare
Year: 2023
Subjects: Teacher education and professional development of educators

description: Um Mapeamento Sistemático da Literatura sobre AmbientesDigitais para o Treinamento de Profissionais da Educação
Dados abertos e programas livres para a redução dos riscos de desastres
Creators: name: Dezidério Souto, Raquel
Publisher: name: Seminário em apoio ao Rio Grande do Sul, IVIDES.org, remoto, 27 set. 2024.
Year: 2024

description: Apresentação da palestra Dados abertos e programas livres para a redução dos riscos de desastres,  de autoria da PD Dra. Raquel Dezidério Souto (IVIDES.org e GeoCart-UFRJ, Brasil). A palestra foi ministrada no Seminário em apoio ao Rio Grande do Sul, promovido no dia 27 de setembro de 2024, pelo Instituto Virtual para o Desenvolvimento Sustentável - IVIDES.org, em parceria com os capítulos YouthMappers UERGS e YouthMappers Unipampa. Patrocínio do Wiki Apoia/ Wiki Movimento Brasil. Licença: CC-BY-SA 4.0 International. As imagens nesta apresentação podem ter licenças diferentes. https://ivides.org/seminario-rs

Link para o vídeo: https://www.youtube.com/live/Dv9t2ZTRsWQ
description: Presentation of the lecture Open data and free programs for disaster risk reduction, by PD Dr. Raquel Dezidério Souto (IVIDES.org and GeoCart-UFRJ, Brazil). The lecture was given in Portuguese, at the Seminar in support of Rio Grande do Sul, promoted on September 27, 2024, by the Virtual Institute for Sustainable Development - IVIDES.org, in partnership with the YouthMappers UERGS and YouthMappers Unipampa chapters. Sponsored by Wiki Apoia/ Wiki Movimento Brasil. License: CC-BY-SA 4.0 International. Some figures can present different license. https://ivides.org/seminario-rs

Link to video: https://www.youtube.com/live/Dv9t2ZTRsWQ
Lindsey the Tour Guide Robot: Adaptive Long-Term Autonomy in Social Environments
Creators: name: Del Duchetto, Francesco
Publisher: name: University of Lincoln
Year: 2023
Subjects: H670 - Robotics & cybernetics
H671 - Robotics
I140 - Human-computer interaction
I460 - Machine learning

description: This project proposes a framework for online adaptation of robot behaviours deployed autonomously in social settings with the goal of increasing the overall users' engagement during the interactions.One of the most critical aspects to address for robots deployed in ``the real world'' is the necessity of interacting with people, whether intentionally or not. Interacting with people requires a wide range of capabilities, from perceiving the different people's intentions and emotional states to generating appropriate behaviours for the specific context of the interaction. Moreover, it requires that robots learn and adapt from experience while interacting with their users. In this project, a mobile robot is embedded in a long-term study in a public museum. The robot has been deployed for more than a year, to date, as an autonomous tour guide to the museum's visitors, with its tasks being guiding people to the position of various exhibits and giving a description of each item. The long-term scenario allows studying how people interact with a robot in an unconstrained setting and give the opportunity of improving the current state-of-the-art robotics autonomy in a social setting.The initial data collection shows that users' engagement during the robotised tours steeply declines after the initial moments of the interaction. The first main contribution of this project is to investigate whether it is possible to automatically assess the users' engagement from the robot point-of-view during the interactions. A dataset of robot ego-centric videos was collected and manually annotated by independent coders with continuous engagement values. From it, an end-to-end regression model was trained to predict engagement from the robot point of view from a single camera. Experimental evaluation shows that the model accurately estimates the engagement level of people during an interaction, even in diverse environments and with different robots. Once the robot can detect the engagement state of users during the interactions, it can potentially plan tangential behaviours to influence the users' attentional state itself. The second contribution of this work is devising an online reinforcement learning algorithm that allows the robot to adapt its behaviour online from the feedback obtained during the interactions. The feedback is obtained from users' engagement values estimated from the robot head camera. In the experimental evaluation, the robot delivers the usual tours to the users with the difference that the choice of some actions is left to the adaptive learning algorithm. Results show that after a few months of exploration, the robot successfully learns a policy that leads people to stay in the interaction for longer.
O poder e os desafios dos mapeamentos colaborativos na gestão de riscos de desastres
Creators: name: Almeida de Figueiredo Jalowitzki, Ivana
Publisher: name: Seminário em apoio ao Rio Grande do Sul, IVIDES.org, remoto, 27 set. 2024.
Year: 2024

description: Apresentação da palestra O poder e os desafios dos mapeamentos colaborativos na gestão de riscos de desastres,  de autoria da Profa. Dra. Ivana Almeida de Figueiredo Jalowitzki (IESB, Brasil). A palestra foi ministrada no Seminário em apoio ao Rio Grande do Sul, promovido no dia 27 de setembro de 2024, pelo Instituto Virtual para o Desenvolvimento Sustentável - IVIDES.org, em parceria com os capítulos YouthMappers UERGS e YouthMappers Unipampa. Patrocínio do Wiki Apoia/ Wiki Movimento Brasil. Licença: CC-BY-SA 4.0 International. As imagens nesta apresentação podem ter licenças diferentes. https://ivides.org/seminario-rs

Link para o vídeo: https://www.youtube.com/live/Dv9t2ZTRsWQ
description: Presentation of the lecture The power and challenges of collaborative mapping in disaster risk management, by Prof. Dr. Ivana Almeida de Figueiredo Jalowitzki (IESB, Brazil). The lecture was given at the Seminar in support of Rio Grande do Sul, held on September 27, 2024, by the Virtual Institute for Sustainable Development - IVIDES.org, in partnership with the YouthMappers UERGS and YouthMappers Unipampa chapters. Sponsored by Wiki Apoia/ Wiki Movimento Brasil. License: CC-BY-SA 4.0 International. Some figures can present different license. https://ivides.org/seminario-rs

Link to video: https://www.youtube.com/live/Dv9t2ZTRsWQ
High-energy neutrinos from X-rays flares of blazars frequently observed by the Swift X-Ray Telescope
Creators: name: Stathopoulos, S. I.
name: Petropoulou, M.
name: Giommi, P.
name: Vasilopoulos, G.
name: Padovani, P.
name: Mastichiadis, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Blazar flares have been suggested as ideal candidates for enhanced neutrino production. While the neutrino signal of $γ$-ray flares has been widely discussed, the neutrino yield of X-ray flares has received less attention. Here, we compute the predicted neutrino signal from X-ray flares detected in 66 blazars observed more than 50 times with the X-ray Telescope (XRT) on board the Neil Gehrels Swift Observatory. We consider a scenario where X-ray flares are powered by synchrotron radiation of relativistic protons, and neutrinos are produced through photomeson interactions between protons with their own synchrotron X-ray photons. Using the 1 keV X-ray light curves for flare identification, the 0.5-10 keV fluence of each flare as a proxy for the all-flavour neutrino fluence, and the IceCube point-source effective area for different detector configurations, we calculate the number of muon and antimuon neutrinos above 100 TeV expected for IceCube from each flaring source. The bulk of the neutrino events from the sample originates from flares with durations $\sim 1-10$ d. Accounting for the X-ray flare duty cycle of the sources in the sample, which ranges between $\sim2$ and 24 per cent, we compute an average yearly neutrino rate for each source. The median of the distribution (in logarithm) is $\sim0.03$ yr$^{-1}$, with Mkn 421 having the highest predicted rate $1.2\pm 0.3$ yr$^{-1}$, followed by 3C 273 $(0.33\pm0.03$ yr$^{-1})$ and PG 1553+113 ($0.25\pm0.02$ yr$^{-1}$). Next-generation neutrino detectors together with regular X-ray monitoring of blazars could constrain the duty cycle of hadronic X-ray flares.
description: 17 pages, 16 figures, Accepted for publication in MNRAS
Infinite families of fracton fluids with momentum conservation
Creators: name: Osborne, Andrew
name: Lucas, Andrew
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct infinite families of new universality classes of fracton hydrodynamics with momentum conservation, both with multipole conservation laws and/or subsystem symmetry. We explore the effects of broken inversion and/or time-reversal symmetry at the ideal fluid level, along with momentum relaxation. In the case of one-dimensional multipole-conserving models, we write down explicit microscopic Hamiltonian systems realizing these new universality classes. All of these hydrodynamic universality classes exhibit instabilities and will flow to new non-equilibrium fixed points. Such fixed points are predicted to exist in arbitrarily large spatial dimensions.
description: 15 pages
The Mass of the Milky Way from the H3 Survey
Creators: name: Shen, Jeff
name: Eadie, Gwendolyn M.
name: Murray, Norman
name: Zaritsky, Dennis
name: Speagle, Joshua S.
name: Ting, Yuan-Sen
name: Conroy, Charlie
name: Cargile, Phillip A.
name: Johnson, Benjamin D.
name: Naidu, Rohan P.
name: Han, Jiwon Jesse
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The mass of the Milky Way is a critical quantity which, despite decades of research, remains uncertain within a factor of two. Until recently, most studies have used dynamical tracers in the inner regions of the halo, relying on extrapolations to estimate the mass of the Milky Way. In this paper, we extend the hierarchical Bayesian model applied in Eadie & Jurić (2019) to study the mass distribution of the Milky Way halo; the new model allows for the use of all available 6D phase-space measurements. We use kinematic data of halo stars out to $142~{\rm kpc}$, obtained from the H3 Survey and $\textit{Gaia}$ EDR3, to infer the mass of the Galaxy. Inference is carried out with the No-U-Turn sampler, a fast and scalable extension of Hamiltonian Monte Carlo. We report a median mass enclosed within $100~{\rm kpc}$ of $\rm M(<100 \; kpc) = 0.69_{-0.04}^{+0.05} \times 10^{12} \; M_\odot$ (68% Bayesian credible interval), or a virial mass of $\rm M_{200} = M(<216.2_{-7.5}^{+7.5} \; kpc) = 1.08_{-0.11}^{+0.12} \times 10^{12} \; M_\odot$, in good agreement with other recent estimates. We analyze our results using posterior predictive checks and find limitations in the model's ability to describe the data. In particular, we find sensitivity with respect to substructure in the halo, which limits the precision of our mass estimates to $\sim 15\%$.
description: 30 pages, 11 figures, 6 tables. Accepted for publication in ApJ
MPEC 2024-S164 : 2024 SQ4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 SQ4

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Randall-Sundrum Models and Precision Observables
Creators: name: Bauer, Martin
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I present a review of phenomenological implications of the Randall-Sundrum (RS) model with bulk fermions and brane-localized Higgs boson. Modifications to the W-boson mass, corrections to the Peskin-Takeuchi parameters and to the Z -> bb couplings will be discussed. From these observables severe bounds on the mass scale of Kaluza-Klein (KK) modes arise. Constraints from all three observables are very sensitive to the exact value of the Higgs boson mass and the bounds can be significantly lowered by allowing for a heavy Higgs boson (m_h ~ 1 TeV). Consequences thereof, as well as other approaches like "little RS" models and models with custodial symmetry will also be briefly discussed.
description: Presented at the FLAVIAnet workshop in Kazimierz: Low energy constraints on extensions of the Standard Model
Analysis of Sustainability Status of Integration of Beef Cattle and Paddy with Technology Innovation of Rice Straw as Feed and Beef Cattle Manure as Fertilizer and Biogas.
Creators: name: Jasmal A. Syamsu1*, Hikmah M. Ali2
Publisher: name: คณะสิ่งแวดล้อมและทรัพยากรศาสตร์
Year: 2013
Subjects: Sustainability/ Beef cattle/Paddy/ Biogas/ Fertilizer/ Rice straw

description: 2, 11, Environment and Natural Resources Journal
Static and dynamic solar coronal loops with cross-sectional area variations
Creators: name: Cargill, P. J.
name: Bradshaw, S. J.
name: Klimchuk, J. A.
name: Barnes, W. T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Enthalpy Based Thermal Evolution of Loops (EBTEL) approximate model for static and dynamic coronal loops is developed to include the effect of a loop cross-sectional area which increases from the base of the transition region (TR) to the corona. The TR is defined as the part of a loop between the top of the chromosphere and the location where thermal conduction changes from an energy loss to an energy gain. There are significant differences from constant area loops due to the manner in which the reduced volume of the TR responds to conductive and enthalpy fluxes from the corona. For static loops with modest area variation the standard picture of loop energy balance is retained, with the corona and TR being primarily a balance between heating and conductive losses in the corona, and downward conduction and radiation to space in the TR. As the area at the loop apex increases, the TR becomes thicker and the density in TR and corona larger. For large apex areas, the coronal energy balance changes to one primarily between heating and radiation, with conduction playing an increasingly unimportant role, and the TR thickness becoming a significant fraction of the loop length. Approximate scaling laws are derived that give agreement with full numerical solutions for the density, but not the temperature. For non-uniform areas, dynamic loops have a higher peak temperature and are denser in the radiative cooling phase by of order 50% than the constant area case for the examples considered. They also show a final rapid cooling and draining once the temperature approaches 1 MK. Although the magnitude of the emission measure will be enhanced in the radiative phase, there is little change in the important observational diagnostic of its temperature dependence.
description: 10 pages, 9 figures, published in MNRAS
กลไกการออกฤทธิ์และการประยุกต์ใช้ทางคลินิกของยาในกลุ่ม SELECTIVE PROGESTERONE RECEPTOR MODULATORS  MECHANISMS OF ACTION AND CLINICAL APPLICATIONS OF SELECTIVE PROGESTERONE RECEPTOR MODULATORS
Creators: name: ศรีสมบัติ นวนพรัตน์สกุล
Publisher: name: คณะเภสัชศาสตร์ /โรงพิมพ์ ม.ศิลปากร
Year: 2013
Subjects: โปรเจสเตอโรน, ยาต้านโปรเจสเตอโร, ยาคุมกำเนิดฉุกเฉิน,progesterone, progesterone antagonist, selective progesterone receptor modulators emergency contraceptive,

description: 2 (July-Dec 2013 ), 8, ไทยไภษัชยนิพนธ์ Thai Bulletin of   Pharmaceutical Science (TBPS)
Women with gynecologic cancer need more psychological care during the COVID-19 pandemic
Creators: name: Allahqoli, Leila
name: Karimi-Zarchi, Mojgan
name: Salehiniya, Hamid
name: Alkatout, Ibrahim
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2021
Subjects: COVID-19 pandemic
gynecologic cancers
psychological attention
women

description: EXCLI Journal; 20:Doc194; ISSN 1611-2156
All About Authenticity? TripAdvisor Customer Evaluations of an Italian Dining Experience: The Case of Lower-Scale Restaurants in Lancaster, UK
Creators: name: Nichele, Elena
Publisher: name: University of Lincoln
Year: 2023
Subjects: N562 - Corporate image

description: In their influential contribution, Gilmore and Pine (2007) claim that authenticity is what customers really want. I question the validity of the authors' assertion with regard to lower-scale Italian restaurants in Lancaster, a city in the NorthWest of England, whose population is around 137,788 residents (Lancaster City Council, 2016), far from London cosmopolitanism (see Karosmano?lu, 2013, focusing on the image of 'Turkishness' perceived by Londoners). My research combines manual text analysis with a corpus-based approach. I collected all reviews published on TripAdvisor up to October 2017 for eight Italian restaurants in a joint corpus (2,411 reviews, 209,682 tokens). Furthermore, I created two additional corpora, subdividing the Italian restaurant reviews (IRRs) into positive (whose overall score was 4 or 5 points) and negative evaluations (awarded 1 or 2 points). Finally, I compiled a non-Italian restaurant review corpus (N-IRRC) (5,394 reviews, 468,789 tokens). To identify the elements of Italian dining experiences which are important for reviewers, I analysed the 150 most frequent lexemes in the Italian restaurant review corpus (IRRC) with the aid of the corpus-query system Wmatrix (Rayson, 2003). I compared those lexemes with the most frequent ones in the N-IRRC. Moreover, I selected a random sample of IRRs and N-IRRs and analysed it from an appraisal theory perspective (Martin & White, 2005). Finally, I used the chi-square to test the probability of reviewers to refer to (in)authenticity while discussing a topic. Any statistically significant result shows if the presence or absence of (perceived) authenticity is more relevant for reviewers with regards to a topic. Moreover, the chi-square allows testing of the probability of reviewers to refer to (in)authenticity and any other component of the dining experience (e.g. quality, quantity, consistency) while reviewing either an Italian or a non-Italian restaurant. Any statistically significant result points out if the presence or absence of authenticity, as perceived by the reviewers, can be impacted by the nationality of the cuisine.