cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Escenoplástica y Artes Escénicas. Aproximación a la Historia de la Escenografía: Del Barroco a las últimas tendencias cinematográficas.
Creators: name: MERINO, ESTHER
name: BLÁZQUEZ MATEOS, EDUARDO
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 360403
subject: Drama, theatre and performance studies
classificationCode: 360499
subject: Performing arts not elsewhere classified
classificationCode: 360401
subject: Applied theatre
classificationCode: 360501
subject: Cinema studies
classificationCode: 360102
subject: Art history
classificationCode: 360104
subject: Visual cultures
classificationCode: 430202
subject: Critical heritage, museum and archive studies
classificationCode: 430203
subject: Cultural heritage management (incl. world heritage)
classificationCode: 430206
subject: Heritage collections and interpretations

description: Aproximación a la Historia de la Escenografía de la Época Moderna: Giulio Parigi y los espectáculos florentinos de la primera mitad del siglo XVII. Modelos de referencia y trascendencia posterior hasta las últimas tendencias cinematográficas.Approach to the History of Modern Scenography: Giulio Parigi and the Florentine spectacles of the first half of the 17th century. Reference models and later transcendence up to the latest cinematographic trends.
Re-examining the profile and motivation of German studies students in Australian universities
Creators: name: Schmidt, Gabriele
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: PF3068.A8 S36 2010
subject: German philology Study and teaching Australia.
subject: German language Study and teaching Australia.
subject: Education, Higher Curricula Australia.
subject: Motivation in education Australia.

description: The last comprehensive data on the profile and motivation of German Studies students in Australian universities was collected in the late 1980s and hence does not reflect changes to the Australian higher education sector introduced in the late 1990s. This lack of current data constrains German Studies programs in their options to prepare for the future. The main objective of this thesis is not only to fill the gap of recent data but at the same time to analyse the new data in the context of relevant theories of language learning motivation. The analysis establishes a theoretically informed and data-based platform for future course design which will assist German Studies programs in designing their courses. The thesis begins with a review and critique of former research on German Studies students in Australian universities as well as pertinent models of language learning motivation. It will be argued that previous studies related their findings to Gardner's dichotomy of integrative and instrumental motivation without testing whether their data matched Gardner's model. The thesis' centrepiece is the analysis and discussion of new data collected for this thesis. The data focuses on students' demographic backgrounds, their motivation to learn German, and on their expectations towards course content. Where possible, the new data is compared with data from former studies in order to investigate what changes have occurred over the last two decades. In this context, it will be shown that these changes are primarily a reflection of changes to higher education policies. The data-based analysis of student motivation will reveal that students' reasons for choosing German as part of their degree are more complex than Gardner's dichotomy of integrative and instrumental motivation.
Poetica, teoria letteraria e teoria della letteratura
Creators: name: Biagini, Enza
Publisher: name: Firenze University Press
Year: 2015
Subjects: Russian formalism; research and didactic literature; poetics; theory of literature

description: The article – a foretaste of Teoria della letteratura. Saggi, forthcoming in the series “Moderna/Comparata” edited by Anna Dolfi (Firenze UP) – aims to foreground literary theory, looking back at its beginnings in the early post war period which coincided with the spread of Formalist theories. After its emergence in the mid-20th century, Formalism can now revert to being the subject of investigation in a more aware, well established historical perspective. This gives rise to an exhaustive new look at Boris Tomaševskij’s "Introduction" to his Teorija literatury (1925), an early handbook on this field of research, and the essay entitled “Quelques produits du ‘Formalisme’ russe” by Nina Gourfinkel and Philippe Van Tieghem, published in 1932 in Revue de Littérature comparée.

description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Nota di lettura. Boris Tomaševskij, “Definizione della poetica”; Nina Gourfinkel e Philippe Van Tieghem, “Qualche prodotto del formalismo russo”
Creators: name: Biagini, Enza
Publisher: name: Firenze University Press
Year: 2015

description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Benno Geiger, umanista mitteleuropeo. Il carteggio con Stefan Zweig
Creators: name: Battisti, Diana
Publisher: name: Firenze University Press
Year: 2015
Subjects: Austrian Literature; Benno Geiger; German-Italian Studies, Stefan Zweig: 19th century German Literature; Finis Austriae

description: This article outlines the development of work in progress on the Austrian author Benno Geiger. Mostly forgotten in the field of German studies, Geiger is better known for his writings as an art critic and his translations of Dante, Petrarch and Pascoli than for his compositions as a poet. However, in the decades that followed the Jahrhundertwende, he was a cultural benchmark for an entire generation of artists and intellectuals. In particular, this project focuses on his friendship with Stefan Zweig, which is well documented by a long and intense correspondence (from 1904 to 1939). Both of them see the question of Europeanism in a new light, still to be appraised.
description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Firenze 1865. Quattro passi nella capitale, a cura di Lucia Bruni, Federico Napoli  (Silvana Editoriale, 2014, pp. 136)
Creators: name: Fastelli, Federico
Publisher: name: Firenze University Press
Year: 2015

description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Evidence for in-medium modification of the $ϕ$ meson at normal nuclear density
Creators: name: Muto, R.
name: En'yo, H.
name: Naruki, M.
name: Tabaru, T.
name: Yokkaichi, S.
name: Chiba, J.
name: Ieiri, M.
name: Sasaki, O.
name: Sekimoto, M.
name: Tanaka, K. H.
name: Funahashi, H.
name: Fukao, Y.
name: Kitaguchi, M.
name: Ishino, M.
name: Kanda, H.
name: Mihara, S.
name: Miyashita, T.
name: Miwa, K.
name: Murakami, T.
name: Nakura, T.
name: Sakuma, F.
name: Togawa, M.
name: Yamada, S.
name: Yoshimura, Y.
name: Hamagaki, H.
name: Ozawa, K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Invariant mass spectra of e+e- pairs have been measured in 12 GeV p+A reactions to detect possible in-medium modification of vector mesons. Copper and carbon targets are used to study the nuclear-size dependence of e+e- invariant mass distributions. A significant excess on the low-mass side of the phi meson peak is observed in the low beta gamma (=beta/sqrt(1-beta^2)) region of phi mesons (beta gamma < 1.25) with copper targets. However, in the high beta gamma region (beta gamma > 1.25), spectral shapes of phi mesons are well described by the Breit-Wigner shape when experimental effects are considered. Thus, in addition to our earlier publication on rho / omega modification, this study has experimentally verified vector meson mass modification at normal nuclear density.
description: 4 pages, 4 figures
Formation of the largest galactic cores through binary scouring and gravitational wave recoil
Creators: name: Nasim, Imran
name: Gualandris, Alessia
name: Read, Justin I.
name: Antonini, Fabio
name: Dehnen, Walter
name: Delorme, Maxime
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Massive elliptical galaxies are typically observed to have central cores in their projected radial light profiles. Such cores have long been thought to form through `binary scouring' as supermassive black holes (SMBHs), brought in through mergers, form a hard binary and eject stars from the galactic centre. However, the most massive cores, like the ~3kpc core in A2261-BCG, remain challenging to explain in this way. In this paper, we run a suite of dry galaxy merger simulations to explore three different scenarios for central core formation in massive elliptical galaxies: `binary scouring', `tidal deposition' and `gravitational wave (GW) induced recoil'. Using the Griffin code, we self-consistently model the stars, dark matter and SMBHs in our merging galaxies, following the SMBH dynamics through to the formation of a hard binary. We find that we can only explain the large surface brightness core of A2261-BCG with a combination of a major merger that produces a small ~1kpc core through binary scouring, followed by the subsequent GW recoil of its SMBH that acts to grow the core size. We show that this same model can also explain the bright `knots' observed in the core region of A2261-BCG. Key predictions of this scenario are an offset SMBH surrounded by a compact cluster of bound stars and a non-divergent central density profile. We show that the bright `knots' observed in the core region of A2261-BCG are best explained as stalled perturbers resulting from minor mergers, though the brightest may also represent ejected SMBHs surrounded by a stellar cloak of bound stars.
description: Accepted in MNRAS
La Gemäldegalerie di Dresda. Evoluzione dal Settecento a fine Ottocento
Creators: name: Marzotto Caotorta, Aloisia
Publisher: name: Firenze University Press
Year: 2015
Subjects: Augustan Age; gallery; Gemäldegalerie; Old Masters Picture; Semperbau

description: Since its foundation, the Gemäldegalerie (Old Masters Picture Gallery) in Dresden has been considered one of the most magnificent picture galleries in Europe. Not only during the Augustan Age there was a keen interest in the arts, but also a strong understanding of the arts as a means of political power claims. In this context, the Gemäldegalerie was the most representative display of this phenomenon. This article aims to explore the complex role played by the galleries of royal and aristocratic residences in Saxony, concentrating on the Gemäldegalerie between the 18th and 19th centuries as a case study, as well as focusing on its impact on contemporary German literature.

description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
The bulk of the stock market correlation matrix is not pure noise
Creators: name: Kwapien, J.
name: Oswiecimka, P.
name: Drozdz, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We analyse the structure of the distribution of eigenvalues of the stock market correlation matrix with increasing length of the time series representing the price changes. We use 100 highly-capitalized stocks from the American market and relate result to the corresponding ensemble of Wishart random matrices. It turns out that systematically more eigenvalues stay beyond the borders prescribed by this variant of the Random Matrix Theory (RMT). This may indicate that even the bulk of the spectrum of the stock market correlation matrix carries some sort of correlations that are masked by a measurement noise when the time series used to construct the matrix are short. We also study some other characteristics of the "noisy" eigensignals, like their return distributions, temporal correlations or their multifractal spectra and the results support the above conclusions.
description: updated version to appear in Physica A
Dal diario di una piccola comunista. Ricostruzione della vicenda umana nella Cecoslovacchia di Husák
Creators: name: Mella, Stefania
Publisher: name: Firenze University Press
Year: 2015
Subjects: autofiction; everyday life; Gustav Husák; normalization; pioneers

description: This article aims to present Dal diario di una piccola comunista (From the diary of a young communist girl), the first novel by the Slovak writer Michaela Šebőková. Through the main character’s voice, the eleven-year-old Alžbeta, Šebőková portrays Czechoslovakian society in the years of “normalization” and also offers a deeper understanding of children’s ideological manipulation under the regime of Gustav Husák through to the Young Pioneers Organization. Growing up as a member of this organization, Alžbeta, initially driven by strong Communist ideals, ends up realizing the undeniable contradiction between Communist rhetoric and its actual behaviour. She will reach awareness that lies and pretence are the only values underpinning the communist system of those years.
description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
The Effect of Impact Parameter on Tidal Disruption Events
Creators: name: Spaulding, Alexandra
name: Chang, Philip
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Stars that pass too close to a supermassive black hole are disrupted by the black hole's tidal gravity and leads to some debris being ejected while the remainder accretes into the black hole. To better study the physics of this debris, we use the moving mesh code MANGA to follow the evolution of the star from its initial encounter to its complete destruction. By varying the impact parameter ($β$) of the star, we studied the energy distribution of the remaining material and the fallback rate of the material into the black hole as a function of time. We show that the spread of energy in the debris and peak luminosity time ($t_{\rm peak}$) are both directly related to the impact parameter. In particular, we find a $β^{1/2}$ scaling for the energy spread for $β=2-10$ and a frozen evolution for $β\gtrsim 10$. We discuss implication of this scaling for the rise time of the light curve and broadness of the luminosity peak for these lower $β$'s. These relationships provide a possible means of inferring the impact parameters for observed TDEs.
description: 8 pages, 6 figures, submitted to MNRAS
Non luogo a procedere  di Claudio Magris (Garzanti, 2015, pp. 362)
Creators: name: Pellegrini, Ernestina
Publisher: name: Firenze University Press
Year: 2015

description:
description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Universal Critical Exponents of the Magnetic Domain Wall Depinning Transition
Creators: name: Albornoz, Lucas J.
name: Ferrero, Ezequiel E.
name: Kolton, Alejandro B.
name: Jeudy, Vincent
name: Bustingorry, Sebastian
name: Curiale, Javier
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Magnetic field driven domain wall dynamics in a ferrimagnetic GdFeCo thin film with perpendicular magnetic anisotropy is studied using low temperature magneto-optical Kerr microscopy. Measurements performed in a practically athermal condition allow for the direct experimental determination of the velocity ($ β= 0.30 \pm 0.03 $) and correlation length ($ ν= 1.3 \pm 0.3 $) exponents of the depinning transition. The whole family of exponents characterizing the transition is deduced, providing evidence that the depinning of magnetic domain walls is better described by the quenched Edwards-Wilkinson universality class.
description: 6 pages, 3 figures. Ancillary Material with 10 pages and 4 figures is also included
Squeezing superfluid from a stone: Coupling superfluidity and elasticity in a supersolid
Creators: name: Dorsey, Alan T.
name: Goldbart, Paul M.
name: Toner, John
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this work we start from the assumption that normal solid to supersolid (NS-SS) phase transition is continuous, and develop a phenomenological Landau theory of the transition in which superfluidity is coupled to the elasticity of the crystalline $^4$He lattice. We find that the elasticity does not affect the universal properties of the superfluid transition, so that in an unstressed crystal the well-known $λ$-anomaly in the heat capacity of the superfluid transition should also appear at the NS-SS transition. We also find that the onset of supersolidity leads to anomalies in the elastic constants near the transition; conversely, inhomogeneous strains in the lattice can induce local variations of the superfluid transition temperature, leading to a broadened transition.
description: 4 pages
First observation of $ψ(2S) \to p \bar{n} π^- +c.c.$
Creators: name: Ablikim, M.
name: Collaboration, BES
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using 14 million $ψ(2S)$ events collected with the Beijing Spectrometer (BESII) at the Beijing Electron-Positron Collider, the branching fractions of $ψ(2S)$ decays to $p \bar{n} π^-$ and $\bar{p} n π^+$ and the branching fractions of the main background channels $ψ(2S) \to p \bar{n} π^-π^0$, $ψ(2S) \to γχ_{c0} \to γp \bar{n} π^-$, $ψ(2S) \to γχ_{c2} \to γp \bar{n} π^-$, and $ψ(2S) \to γχ_{cJ} \to γp \bar{n} π^- π^0$ are determined. The contributions of the $N^{\ast}$ resonances in $ψ(2S) \to p \bar{n} π^- +c.c.$ are also discussed.
description: 19 pages, 8 figures, add vertex requirement systematic error
Nanomaterials and nanoparticles: Sources and toxicity
Creators: name: Buzea, Cristina
name: Pacheco, Ivan I.
name: Robbie, Kevin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: This review is written with the goal of informing public health concerns related to nanoscience, while raising awareness of nanomaterials toxicity among scientists and manufacturers handling them. We show that humans have always been exposed to nanoparticles and dust from natural sources and human activities, the recent development of industry and combustion-based engine transportation profoundly increasing anthropogenic nanoparticulate pollution. The key to understanding the toxicity of nanoparticles is that their minute size, smaller than cells and cellular organelles, allows them to penetrate these basic biological structures, disrupting their normal function. Among diseases associated with nanoparticles are asthma, bronchitis, lung cancer, neurodegenerative diseases (such as Parkinson`s and Alzheimer`s diseases), Crohn`s disease, colon cancer. Nanoparticles that enter the circulatory system are related to occurrence of arteriosclerosis, and blood clots, arrhythmia, heart diseases, and ultimately cardiac death. We show that possible adverse effects of nanoparticles on human health depend on individual factors such as genetics and existing disease, as well as exposure, and nanoparticle chemistry, size, shape, and agglomeration state. The faster we will understand their causes and mechanisms, the more likely we are to find cures for diseases associated with nanoparticle exposure. We foresee a future with better-informed, and hopefully more cautious manipulation of engineered nanomaterials, as well as the development of laws and policies for safely managing all aspects of nanomaterial manufacturing, industrial and commercial use, and recycling.
description: State of the art review on nanoparticles and dust toxicity intended for a wide audience. Comprehensible to non-specialists in medicine - contains minidictionary of medical terminology; 41 Figures, 4 Tables, 103 pages, 345 references
A change of direction in pairwise neutrino conversion physics: The effect of collisions
Creators: name: Shalgar, Shashank
name: Tamborra, Irene
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Fast pairwise conversions of neutrinos may affect the flavor distribution in the core of neutrino-dense sources. We explore the interplay between collisions and fast conversions within a simplified framework that assumes angle-independent, direction-changing collisions in a neutrino gas that has no spatial inhomogeneity. Counter to expectations, we find that collisions may enhance fast flavor conversions instead of damping them. Our work highlights the need to take into account the feedback of collisions on the neutrino angular distributions self-consistently, in order to predict the flavor outcome in the context of fast pairwise conversions reliably.
description: 11 pages, 6 figures, 2-column revtex4-1 format. Version accepted in Phys.Rev.D. Supplemental material: https://sid.erda.dk/share_redirect/Cb7Xyrai4n/index.html
Uncertain risk, causation and precaution in toxic tort litigation
Creators: name: Powell, Brenda Heelan
Publisher: name: University of British Columbia
Year: 2009

description: The requirements for proof of causation determine the extent to which the general public will be exposed to risks associated with technological and scientific processes. If the requirements for proving causation are set too high, individuals will be less successful in protecting their rights to personal integrity and property. As such, the general public will be exposed to greater risk of harm by toxic substances associated with industrial activities. Conversely, technological and scientific advancement will be stifled by overly lax causation requirements which place an excessive burden on the producers and users of toxic substances. Due to the limits of scientific knowledge, the traditional requirements for proof of causation present an almost insurmountable barrier to success in toxic tort litigation. In particular, the risk associated with a particular industrial process may be unknowable in light of current scientific knowledge. The traditional causation requirements are unsuited to the situation in which scientific evidence can demonstrate a significantly increased risk of harm but cannot establish a conclusive causal link. The courts should expressly acknowledge the scientific uncertainty surrounding the risk associated with many industrial activities, and explicitly adopt a policy approach to dealing with this uncertainty. At one extreme, the courts may allow these processes to proceed until there has been clear demonstration of harm. At the other extreme, the courts may disallow these processes to proceed until there has been clear demonstration of safety. Falling between these extremes, the courts may allow cautious progress with these processes until there has been clear demonstration of harm or safety. The latter approach allows a balance between the social benefit of technological and scientific advancement and the individual rights to personal integrity and property. In the context of toxic tort litigation, this approach can be adopted by moving from a formulaic conception of causation to a flexible, policy sensitive conception which is guided by the notion of precaution. Ultimately, the courts' selection of an approach to dealing with scientific uncertainty is a matter of policy which should be resolved by consideration of the values in conflict in toxic tort litigation.
Inversion of coherent backscattering with interacting Bose-Einstein condensates in two-dimensional disorder : a Truncated Wigner approach
Creators: name: Chrétien, Renaud
name: Schlagheck, Peter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We theoretically study the propagation of an interacting Bose-Einstein condensate in a two-dimensional disorder potential, following the principle of an atom laser. The constructive interference between time-reversed scattering paths gives rise to coherent backscattering, which may be observed under the form of a sharp cone in the disorder-averaged angular backscattered current. As is found by the numerical integration of the Gross-Pitaevskii equation, this coherent backscattering cone is inversed when a non-vanishing interaction strength is present, indicating a crossover from constructive to destructive interferences. Numerical simulations based on the Truncated Wigner method allow one to go beyond the mean-field approach and show that dephasing renders this signature of antilocalisation hidden behind a structureless and dominant incoherent contribution as the interaction strength is increased and the injected density decreased, in a regime of parameters far away from the mean-field limit. However, despite a partial dephasing, we observe that this weak antilocalisation scenario prevails for finite interaction strengths, opening the way for an experimental observation with $^{87}$Rb atoms.
Quasi-condensation of bilayer excitons in a periodic potential
Creators: name: Lagoin, Camille
name: Suffit, Stephan
name: West, Kenneth
name: Baldwin, Kirk
name: Pfeiffer, Loren
name: Holzmann, Markus
name: Dubin, Francois
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study two-dimensional excitons confined in a lattice potential, for high fillings of the lattice sites. We show that a quasi-condensate is possibly formed for small values of the lattice depth, but for larger ones the critical phase-space density for quasi-condensation rapidly exceeds our experimental reach, due to the increase of the excitons effective mass. On the other hand, in the regime of a deep lattice potential where excitons are strongly localised at the lattice sites, we show that an array of phase-independent quasi-condensates, different from a Mott insulating phase, is realised.
description: 5 pages 4 figures
A possible new interpretation of the results of $Δα/α$ from QSO absorption lines
Creators: name: Fujii, Yasunori
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The measurement of $Δα/α$ from the QSO absorption lines of Fe_II taken at two different redshifts (Quast et al, Levshakov et al) is compared with the result based on the 23 data points also obtained from VLT/UVES (Chand et al), to demonstrate that the apparent oscillatory time-dependence fitting the latter taken at face value is reinforced by the former claimed to be of much better accuracy.
description: 5 pages, 2 figures
Higher-Curvature Corrections and Tensor Modes
Creators: name: Giarè, William
name: Renzi, Fabrizio
name: Melchiorri, Alessandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Higher-curvature corrections to the effective gravitational action may leave signatures in the spectrum of primordial tensor perturbations if the inflationary energy scale is sufficiently high. In this paper we further investigate the effects of a coupling of the Inflaton field to higher-curvature tensors in models with a minimal breaking of conformal symmetry. We show that an observable violation of the tensor consistency relation from higher-curvature tensors implies also a relatively large running of the tensor tilt, enhanced even by some order of magnitude with respect to the standard slow roll case. This may leave signatures in the tensor two-point function that we could test to recognize higher-curvature effects, above all if they are translated into a blue tilted spectrum visible by future Gravitational Wave experiments. Exploiting current cosmic microwave background and gravitational wave data we also derive constraints on the inflationary parameters, inferring that large higher-curvature corrections seem to be disfavored.
description: 11 pages, 3 figures
Persistence of Flare-Driven Atmospheric Chemistry on Rocky Habitable Zone Worlds
Creators: name: Chen, Howard
name: Zhan, Zhuchang
name: Youngblood, Allison
name: Wolf, Eric T.
name: Feinstein, Adina D.
name: Horton, Daniel E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Low-mass stars show evidence of vigorous magnetic activity in the form of large flares and coronal mass ejections. Such space weather events may have important ramifications for the habitability and observational fingerprints of exoplanetary atmospheres. Here, using a suite of three-dimensional coupled chemistry-climate model (CCM) simulations, we explore effects of time-dependent stellar activity on rocky planet atmospheres orbiting G-, K-, and M-dwarf stars. We employ observed data from the MUSCLES campaign and Transiting Exoplanet Satellite Survey and test a range of rotation period, magnetic field strength, and flare frequency assumptions. We find that recurring flares drive K- and M-dwarf planet atmospheres into chemical equilibria that substantially deviate from their pre-flare regimes, whereas G-dwarf planet atmospheres quickly return to their baseline states. Interestingly, simulated O$_2$-poor and O$_2$-rich atmospheres experiencing flares produce similar mesospheric nitric oxide abundances, suggesting that stellar flares can highlight otherwise undetectable chemical species. Applying a radiative transfer model to our CCM results, we find that flare-driven transmission features of bio-indicating species, such as nitrogen dioxide, nitrous oxide, and nitric acid, show particular promise for detection by future instruments.
description: 27 pages, 14 figures total, 6 main text figures, 8 extended data figures, updated to the published version in the March 2021 Issue of Nature Astronomy; Volume 5, Pages 298-310; the published version is available at https://www.nature.com/articles/s41550-020-01264-1
Implicating the Cholecystokinin B Receptor in Liver Stem Cell Oncogenesis
Creators: name: Gay, Martha D.
name: Drda, Jack C
name: Chen, Wenqiang
name: Huang, Yimeng
name: Yassin, Amal A
name: Duka, Tetyana
name: Fang, Hongbin
name: Shivapurkar, Narayan
name: Smith, Jill P
Publisher: name: Zenodo
Year: 2024

description: Abstract

 

Hepatocellular carcinoma (HCC) is the fastest growing cause of cancer-related deaths worldwide. Chronic inflammation and fibrosis are the greatest risk factors for the development of HCC. Although the cell of origin for HCC is uncertain, many theories believe this cancer may arise from liver progenitor cells or stem cells. Here, we describe the activation of hepatic stem cells that over-express the cholecystokinin-B receptor (CCK-BR) after liver injury with either a DDC diet (0.1% 3, 5-diethoxy-carbonyl 1,4-dihydrocollidine) or a NASH-inducing CDE diet (choline deficient ethionine) in murine models. Pharmacologic blockade of the CCK-BR with a receptor antagonist proglumide or knockout of the CCK-BR in genetically engineered mice during the injury diet reduces the expression of hepatic stem cells and prevents the formation of 3-dimensional tumorspheres in culture. RNA sequencing of livers from DDC-fed mice treated with proglumide or DDC-fed CCK-BR knockout mice showed downregulation of differentially expressed genes involved in cell proliferation and oncogenesis and upregulation of tumor suppressor genes compared to controls.  Inhibition of the CCK-BR decreases hepatic transaminases, fibrosis, cytokine expression, and alters the hepatic immune cell signature rendering the liver microenvironment less oncogenic. Furthermore, proglumide hastened recovery after liver injury by reversing fibrosis and improving markers of synthetic function. Proglumide is an older drug that is orally bioavailable and being repurposed for liver conditions. These findings support a promising therapeutic intervention applicable to patients to prevent the development of HCC and decrease hepatic fibrosis.
description: New and Noteworthy:  This investigation identified a novel pathway involving the activation of hepatic stem cells and liver oncogenesis. Receptor blockade or genetic disruption of the CCK-BR signaling pathway decreased the activation and proliferation of hepatic stem cells after liver injury without eliminating the regenerative capacity of healthy hepatocytes.
Hopf algebras and dendriform structures arising from parking functions
Creators: name: Novelli, Jean-Christophe
name: Thibon, Jean-Yves
Publisher: name: arXiv
Year: 2005
Subjects: subject: Combinatorics (math.CO)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: We introduce a graded Hopf algebra based on the set of parking functions (hence of dimension (n+1)^{n-1} in degree n). This algebra can be embedded into a noncommutative polynomial algebra in infinitely many variables. We determine its structure, and show that it admits natural quotients and subalgebras whose graded components have dimensions respectively given by the Schroder numbers (plane trees), the Catalan numbers, and powers of 3. These smaller algebras are always bialgebras and belong to some family of di- or tri-algebras occuring in the works of Loday and Ronco. Moreover, the fundamental notion of parkization allows one to endow the set of parking functions of fixed length with an associative multiplication (different from the one coming from the Shi arrangement), leading to a generalization of the internal product of symmetric functions. Several of the intermediate algebras are stable under this operation. Among them, one finds the Solomon descent algebra but also a new algebra based on a Catalan set, admitting the Solomon algebra as a left ideal.
description: 52 pages, 1 figure .eps
A Microscopic Lattice for Two-dimensional Dipolar Excitons
Creators: name: Lagoin, Camille
name: Suffit, Stephan
name: Bernard, Mathieu
name: Vabre, Maxime
name: West, Kenneth
name: Baldwin, Kirk
name: Pfeiffer, Loren
name: Dubin, Francois
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report a two-dimensional artificial lattice for dipolar excitons confined in a GaAs double quantum well. Exploring the regime of large fillings per lattice site, we verify that the lattice depth competes with the magnitude of excitons repulsive dipolar interactions to control the degree of localisation in the lattice potential. Moreover, we show that dipolar excitons radiate a narrow-band photoluminescence, with a spectral width of a few hundreds of micro-eV at 340 mK, in both localised and delocalised regimes. This makes our device suitable for explorations of dipolar excitons quasi-condensation in a periodic potential.
description: 5 pages, 4 figures
Stripes and superconductivity in cuprate superconductors
Creators: name: Tranquada, J. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: One type of order that has been observed to compete with superconductivity in cuprates involves alternating charge and antiferromagnetic stripes. Recent neutron scattering studies indicate that the magnetic excitation spectrum of a stripe-ordered sample is very similar to that observed in superconducting samples. In fact, it now appears that there may be a universal magnetic spectrum for the cuprates. One likely implication of this universal spectrum is that stripes of a dynamic form are present in the superconducting samples. On cooling through the superconducting transition temperature, a gap opens in the magnetic spectrum, and the weight lost at low energy piles up above the gap; the transition temperature is correlated with the size of the spin gap. Depending on the magnitude of the spin gap with respect to the magnetic spectrum, the enhanced magnetic scattering at low temperature can be either commensurate or incommensurate. Connections between stripe correlations and superconductivity are discussed.
description: 6 pp, for proceedings of SPIE mtg., July 31-Aug. 4, 2005 in San Diego
การพัฒนาแบบวัดการเปิดเผยตัวตนบนเครือข่ายสังคมออนไลน์ (เฟสบุ๊ค)
Creators: name: สุดารัตน์  แสงแก้ว
name: สฤษดิ์พงศ์  นิใจ
name: อัศนัย  ธุรวติกุล
name: ภาสกร  เตวิชพงศ์
Publisher: name: Industrial Technology Lampang Rajabhat University
Year: 2015
Subjects: Scale Development, Self-disclosure, Online Social Network, Facebook

description: 2, 8, วารสารวิชาการคณะเทคโนโลยีอุตสาหกรรม  มหาวิทยาลัยราชภัฏลำปาง
The Cornell High-order Adaptive Optics Survey for Brown Dwarfs in Stellar Systems-II: Results from Monte Carlo Population Analyses
Creators: name: Carson, J. C.
name: Eikenberry, S. S.
name: Smith, J. J.
name: Cordes, J. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this second of a two-paper sequence, we present Monte Carlo population simulation results of brown dwarf companion data collected during the Cornell High-order Adaptive Optics Survey for brown dwarf companions (CHAOS). Making reasonable assumptions of orbital parameters (random inclination, random eccentricity and random longitude of pericentre) and age distributions, and using published mass functions, we find that the brown dwarf companion fraction around main sequence stars is 0.0%-9.3% for the 25-100 AU semi-major axis region. We find a corresponding L-dwarf companion fraction of 0.0%-3.3%. We compare our population analysis methods and results with techniques and results presented by several other groups. In this comparison we discover that systematic errors (most notably resulting from orbital projection effects) occur in the majority of previously published brown dwarf companion population estimates, leading authors to claim results not supported by the observational data.
description: Accepted for publication in the Astronomical Journal. 21 pages including 4 figures and 1 table
Gravity-induced entanglement in optomechanical systems
Creators: name: Matsumura, Akira
name: Yamamoto, Kazuhiro
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the phenomenon of gravity-induced entanglement in optomechanical systems. Assuming photon number conservation and the Newtonian potential expanded up to the quadratic order of the oscillator positions, we exactly solve the dynamics of the optomehcanical systems. Then, we find that the phase difference due to the Newtonian gravity leads to the large entanglement of photons in separated cavities. We clarify the generating mechanism of large gravity-induced entanglements in optomechanical systems in an exact manner. We also determine the characteristic time to generate the maximal entanglement of photons. Finally, by comparing the characteristic time with the decoherence time due to photon leakage, we evaluate the range of the dissipation rate required for testing the gravity-induced entanglement.
description: 21 pages, 3 figures
The Phase Structure of Low Dimensional Large N Gauge Theories on Tori
Creators: name: Aharony, Ofer
name: Marsano, Joseph
name: Minwalla, Shiraz
name: Papadodimas, Kyriakos
name: Van Raamsdonk, Mark
name: Wiseman, Toby
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we continue our study of the thermodynamics of large N gauge theories on compact spaces. We consider toroidal compactifications of pure SU(N) Yang-Mills theories and of maximally supersymmetric Yang-Mills theories dimensionally reduced to 0+1 or 1+1 dimensions, and generalizations of such theories where the adjoint fields are massive. We describe the phase structure of these theories as a function of the gauge coupling, the geometry of the compact space and the mass parameters. In particular, we study the behavior of order parameters associated with the holonomy of the gauge field around the cycles of the torus. Our methods combine analytic analysis, numerical Monte Carlo simulations, and (in the maximally supersymmetric case) information from the dual gravitational theories.
description: harvmac, 67 pages, 21 figures. v2: minor corrections and clarifications
MAXSUS MUASSASALARDA PSIXOLOGIK-PEDAGOGIK DIAGNOSTIKANING AHAMIYATI
Creators: name: Umarova Saboxon Minavvarovna, Ne'matillayeva Mushtariy
Publisher: name: Zenodo
Year: 2025

description: Annotatsiya: Ushbu maqolada bolalar maktabda ta’lim olayotgan bo’lsalar, o’qishida mavjud kiyinchiliklarning sababi va xarakterini belgilash, nuqsoni tarkibini ochib berishi, bilim olish qobiliyatiga katta diqqat qaratish kerakligi, fikrlash qobiliyati, fikrlash jarayoning egiluvchanligi, o’quv qurollarni o’zlashtirishi xamda bola yordamni qabul qilish qobiliyati  va yordamning xarakteri, o’lchamligi e’tiborga olinishi haqida fikr bildirilgan
Discriminating Supersymmetry and Black Holes at the Large Hadron Collider
Creators: name: Roy, Arunava
name: Cavaglia, Marco
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show how to differentiate the minimal supersymmetric extension of the standard model from black hole events at the Large Hadron Collider. Black holes are simulated with the CATFISH generator. Supersymmetry simulations use a combination of PYTHIA and ISAJET. Our study, based on event shape variables, visible and missing momenta, and analysis of dilepton events, demonstrates that supersymmetry and black hole events at the LHC can be easily discriminated.
description: 12 pages, 8 figures
Discovery of a stellar system in the background of 47 Tucanae
Creators: name: Bellazzini, M.
name: Pancino, E.
name: Ferraro, F. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the discovery of a stellar system in the background of the Galactic globular cluster 47 Tucanae (NGC 104), located 14.8' North-West of the cluster center. The object, whose apparent diameter is D~30'', is partially resolved into stars on the available CCD images, reaching a limiting magnitude of V~22.5, and is detected as a significant (more than 5 sigma) overdensity of blue stars (B-V<0.7). The color magnitude diagram of the system, its characteristic projected size and its position in the sky suggest that it is an intermediate-old age cluster belonging to the Small Magellanic Cloud, whose outskirts lie in the background of 47 Tuc. Although less likely, the possibility that the object is an unknown dwarf galaxy in the outskirts of the Local Group cannot completely be ruled out by the present data.
description: 5 pages, 5 figures, accepted for publication in A&A
Deep learning for clustering of continuous gravitational wave candidates II: identification of low-SNR candidates
Creators: name: Beheshtipour, Banafsheh
name: Papa, Maria Alessandra
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Broad searches for continuous gravitational wave signals rely on hierarchies of follow-up stages for candidates above a given significance threshold. An important step to simplify these follow-ups and reduce the computational cost is to bundle together in a single follow-up nearby candidates. This step is called clustering and we investigate carrying it out with a deep learning network. In our first paper [1], we implemented a deep learning clustering network capable of correctly identifying clusters due to large signals. In this paper, a network is implemented that can detect clusters due to much fainter signals. These two networks are complementary and we show that a cascade of the two networks achieves an excellent detection efficiency across a wide range of signal strengths, with a false alarm rate comparable/lower than that of methods currently in use.
The initial conditions of isolated star formation - VI. SCUBA mapping of prestellar cores
Creators: name: Kirk, J. M.
name: Ward-Thompson, D.
name: André, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations have been carried out with SCUBA at the JCMT of 52 molecular cloud cores that do not contain any sign of protostellar activity. These are all therefore candidate prestellar cores, which are believed to represent the stage of star formation that precedes the formation of a protostar. 29 of the 52 cores were detected at 850 microns at varying levels of signal-to-noise ratio greater than 3 sigma at peak. The detected cores were split into 'bright' cores and `intermediate' cores, depending on their peak flux density at 850 microns. Cores with peak 850 microns flux densities greater than 170 mJy/beam were designated 'bright' (13 cores), while those flux densities below this value were designated 'intermediate' (16 cores). This dividing line corresponds to A_v~50 under typical assumptions. The data are combined with our previously published ISO data, and the physical parameters of the cores, such as density and temperature, are calculated. Detailed fitting of the bright core radial profiles shows that they are not critical Bonnor-Ebert spheres, in agreement with previous findings. However, we find that intermediate cores, such as B68 (which has previously been claimed to be a Bonnor-Ebert sphere), may in fact be consistent with the Bonnor-Ebert criterion, suggesting perhaps that cores pass through such a phase during their evolution. We make rough estimates of core lifetimes based on the statistics of detections and find that the lifetime of a prestellar core is roughly ~3x10^5 years, while that of a bright core is \~1.5x10^5 years. Comparisons with some magnetic and turbulence regulated collapse models show that no model can match all of the data. Models that are tuned to fit the total prestellar core lifetime, do not predict the relative numbers of cores seen at each stage.
description: 23 pages, 52 figures, accepted by MNRAS, alternate PDF w/all figures available from http://www.astro.cf.ac.uk/pub/Derek.Ward-Thompson/publications.html
Inference of stochastic time series with missing data
Creators: name: Lee, Sangwon
name: Periwal, Vipul
name: Jo, Junghyo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Inferring dynamics from time series is an important objective in data analysis. In particular, it is challenging to infer stochastic dynamics given incomplete data. We propose an expectation maximization (EM) algorithm that iterates between alternating two steps: E-step restores missing data points, while M-step infers an underlying network model of restored data. Using synthetic data generated by a kinetic Ising model, we confirm that the algorithm works for restoring missing data points as well as inferring the underlying model. At the initial iteration of the EM algorithm, the model inference shows better model-data consistency with observed data points than with missing data points. As we keep iterating, however, missing data points show better model-data consistency. We find that demanding equal consistency of observed and missing data points provides an effective stopping criterion for the iteration to prevent overshooting the most accurate model inference. Armed with this EM algorithm with this stopping criterion, we infer missing data points and an underlying network from a time-series data of real neuronal activities. Our method recovers collective properties of neuronal activities, such as time correlations and firing statistics, which have previously never been optimized to fit.