cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bottomonium production in pp and heavy-ion collisions
Creators: name: Song, Taesoo
name: Aichelin, Joerg
name: Zhao, Jiaxing
name: Gossiaux, Pol Bernard
name: Bratkovskaya, Elena
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We study bottomonium $b\bar b$ production in pp collisions as well as in heavy-ion collisions, using a quantal density matrix approach. The initial bottom (anti)quarks are provided by the PYTHIA event generator. We solve the Schrödinger equation for the $b\bar b$ pair, identifying the potential with the free energy, calculated with lattice QCD, to obtain the temperature dependent $b\bar b$ density matrix as well as the dissociation temperature. The formation of bottomonium is given by projection of the bottomonium density matrix onto the density matrix of the system. With this approach we describe the rapidity and transverse momentum distribution of the $Υ$(nS) in pp collisions at $\sqrt{s_{\rm NN}}=$ 5.02 TeV extending a similar calculation for the charmonium states \cite{Song:2017phm}. We employ the Remler formalism to study the $b\bar b$ production in heavy ion collisions in which the heavy quarks scatter elastically with partons from the quark gluon plasma (QGP). The elastic scattering of heavy (anti)quark in QGP is realized by the dynamical quasi-particle model (DQPM) and the expanding QGP is modeled by PHSD. We find that a reduction to 10 \% of the scattering cross section for a (anti)bottom quark with a QGP parton reproduces the experimental data. This suggests that due to color neutrality the scattering cross section of the small $b\bar b$ system with a parton is considerably smaller than twice the bottom-parton scattering cross section.
description: 9 pages, 6 figures
Spatial Separation of the 3.29 micron Emission Feature and Associated 2 micron Continuum in NGC 7023
Creators: name: An, Jin H.
name: Sellgren, K.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a new 0.9" resolution 3.29 micron narrowband image of the reflection nebula NGC 7023. We find that the 3.29 micron IEF in NGC 7023 is brightest in narrow filaments NW of the illuminating star. These filaments have been seen in images of K', molecular hydrogen emission lines, the 6.2 and 11.3 micron IEFs, and HCO+. We also detect 3.29 micron emission faintly but distinctly between the filaments and the star. The 3.29 micron image is in contrast to narrowband images at 2.09, 2.14, and 2.18 micron, which show an extended emission peak midway between the filaments and the star, and much fainter emission near the filaments. The [2.18]-[3.29] color shows a wide variation, ranging from 3.4-3.6 mag at the 2 micron continuum peak to 5.5 mag in the filaments. We observe [2.18]-[3.29] to increase smoothly with increasing distance from the star, up until the filament, suggesting that the main difference between the spatial distributions of the 2 micron continuum and the the 3.29 micron emission is related to the incident stellar flux. Our result suggests that the 3.29 micron IEF carriers are likely to be distinct from, but related to, the 2 micron continuum emitters. Our finding also imply that, in NGC 7023, the 2 micron continuum emitters are mainly associated with HI, while the 3.29 micron IEF carriers are primarily found in warm molecular hydrogen, but that both can survive in HI or molecular hydrogen. (abridged)
description: to appear in ApJ, including 1 table and 8 figures, high resolution figures available at http://www.ast.cam.ac.uk/~jin/n7023/
Chimica delle rocce di mondi che furono
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2021

L’analisi delle righe spettrali delle atmosfere gassose di 23 nane bianche contaminate dai resti di pianeti rocciosi – rilevate dal Keck, da Hubble e da altri telescopi – ha consentito a un’astronoma e a un geologo statunitensi di ricostruire la composizione chimica dei pianeti stessi. Composizione risultata abbastanza diversa da quella che s’incontra nei mondi rocciosi del Sistema solare, e assai più varia del previsto. I risultati su Nature Communications
Stealth entropy production in active field theories near Ising critical points
Creators: name: Caballero, Fernando
name: Cates, Michael E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We address the steady-state entropy production rate (EPR) of active scalar $ϕ^4$ theories, which lack time-reversal symmetry, close to a phase-separation critical point. We consider both nonconserved (Model A) and conserved (Model B) dynamics at Gaussian level, and also address the former at leading order in $ε= 4-d$. In each case, activity is irrelevant in the RG sense: the active model lies in the same (dynamic Ising) universality class as its time-reversible counterpart. Hence one might expect that activity brings no new critical behavior. Here we show instead that the EPR per spacetime correlation volume either remains finite or diverges on approach to criticality. A nontrivial critical scaling for entropy production thus ranks among universal dynamic Ising-class properties.
description: Version as accepted for publication in Physical Review Letters
Diadasia (Coquillettapis) consociata Timberlake 1939
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy

description: Diadasia (Coquillettapis) consociata Timberlake, 1939 **
[Holotype: CASC; ♂ Blythe, California, USA, July 15, 1938]
This is a new record for Mexico and BC. This species specializes on pollen from the plants in the family Malvaceae (Sipes & Tepedino 2005). The BBPT collected one male in the Coastal Sage Matorral at Maneadero in 2020 and 17 males in the Lower Colorado Desert in May and June 2021 (MABC). See fig. 93.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 156, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
Additional file 1 of Drosophila enabled promotes synapse morphogenesis and regulates active zone form and function
Creators: name: McNeill, Elizabeth M.
name: Thompson, Cheryl
name: Berke, Brett
name: Chou, Vivian T.
name: Rusch, Jannette
name: Duckworth, April
name: DeProto, Jamin
name: Taylor, Alicia
name: Gates, Julie
name: Gertler, Frank
name: Keshishian, Haig
name: Vactor, David Van
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1 Supplemental Figure 1. Fluorescence images (A-F) and quantification (G-H) of NMJs from muscle 6/7 in segment A2 of third-instar wandering larvae. Wild-type flies (control; A-A") and Abl mutants (Abl2/Df Ste34; D-D") are shown stained with horseradish peroxidase (HRP; green, left panels), Futsch (red, middle panels), and with the HRP/Futsch channels merged (yellow, right panels). Staining with active zone markers Brp and endophilin (Endo) as well as the postsynaptic marker glutamate receptor subunit III (GluRIII) was qualitatively normal (B,C,E,F). G, Quantification of synaptic 1b and 1 s bouton number at muscle 4 (orange bars) and muscle 6/7 (blue bars). Abl mutant lines demonstrate an increase in bouton number relative to wild-type control (G). H, Branch number is also increased in abl mutants (E). Error bars indicate ± s.e.m. of genotype; orange and blue shading indicate ± s.e.m. of muscle 4 and 6/7 controls, respectively; n ≥ 20 NMJs for all genotypes, scale = 200 μm.
Diadasia (Coquillettapis) diminuta
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy

description: Diadasia (Coquillettapis) diminuta (Cresson, 1878)
[Syntypes: ♂ Morrison, Colorado, USA]
Diadasia diminuta can be found throughout the entire length of the BCP following the distribution of its host plants in the genus Sphaeralcea A. St. - Hil. and Malacothamnus Greene (Malvaceae) (Sipes & Tepedino 2005). This species was previously recorded in the Coastal Sage Matorral, Chaparral, Lower Colorado Desert, and Central Deserts. There are preserved specimen records in the CNIN, UCRC, and INHS. The CARCIB team collected five females and two males in the Vizcaíno Desert, Magdalena Plains and Gulf Coast in September 2016. Additionally, the BBPT collected 64 specimens (44 ♀, 20 ♂) in the Coastal Sage Matorral, Chaparral, Baja California Mountains, Central Desert, Gulf Coast, and Sarcocaulescent Shrubland (Supplementary material 1). Voucher specimens are in MABC, and ECOAB. See fig. 94.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 156, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
How High Might the Revenue-maximizing Tax Rate Be?
Creators: name: Usher, Dan
name: Usher, Dan
Publisher: name: Unknown
Year: 2014
Subjects: subject: Financial Economics
subject: revenue-maximizing tax rate
subject: Laffer curve

description: Through tax evasion, through the labour-leisure choice or in other ways, taxpayers reduce the tax base in response to an increase in the tax rate. The process is commonly-believed to generate a humped Laffer curve with a revenue-maximizing tax rate well short of 100%. That need not be so. In the “new tax responsiveness literature”, the revenue-maximizing tax rate is inferred from the observed “elasticity of taxable income”. It is shown in this article 1) that the inference is unwarranted because the elasticity of taxable income may vary with the tax rate, 2) that the “new tax responsiveness literature” imposes the implicit assumption that tax revenue falls to 0 when the tax rate rises to 100%, 3) that tax revenue may increase together with the tax rate all the way up to 100% and 4) that the Laffer curve is ill-defined because tax revenue at any given rate may depend upon how tax revenue is spent.
Livin’ on the Edge with Ratings: Liquidity, Efficiency and Stability
Creators: name: Chiu, Jonathan
name: Koeppl, Thorsten
name: Chiu, Jonathan
name: Koeppl, Thorsten
Publisher: name: Unknown
Year: 2014
Subjects: Financial Economics

description: We look at the role of credit ratings when assets are issued in a primary market and sold by dealers into a secondary, over-the-counter market in order to study regulatory proposals for rating agencies. Credit ratings are used to overcome a lemons problem. When the lemons problem is moderate, ratings are used to screen issuers, but are ineffciently inaccurate. Hence, too many lemons are issued in order for dealers to prot from rate shopping where low rating standards lead to high volume, but fragile trading in the secondary market. This ineffciency arises from dealers not properly taking into account the informational rents paid indirectly by investors in the secondary market to primary issuers. We use our framework to show that inhouse ratings by investors or competition in the secondary market can lead to more accurate ratings and more stable trading, while promoting in-house ratings by dealers and competition among rating agencies are ineffective. Holding dealers liable or having investors pay for accurate ratings ex-post can also improve effciency and stability.
Instrument-free Identification and Estimation of Differentiated Products Models
Creators: name: Byrne, David
name: Imai, Susumu
name: Sarafidis, Vasilis
name: Hirukawa, Masayuki
name: Byrne, David
name: Imai, Susumu
name: Sarafidis, Vasilis
name: Hirukawa, Masayuki
Publisher: name: Unknown
Year: 2015
Subjects: Financial Economics

description: We propose a new methodology for estimating the demand and cost functions of dierentiated products models when demand and cost data are available. The method deals with the endogeneity of prices to demand shocks and the endogeneity of outputs to cost shocks, but does not require instruments for identication. We establish non-parametric identication, consistency and asymptotic normality of our estimator. Using Monte-Carlo experiments, we show our method works well in contexts where instruments are correlated with demand and cost shocks, and where commonly-used instrumental variables estimators are biased and numerically unstable.
Superbolla misteriosa ripresa da Hubble
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2021

Mentre la Nasa sta cercando di capire il motivo per il quale gli strumenti scientifici del telescopio spaziale Hubble siano entrati in modalità provvisoria, godiamoci quest’ultima immagine rilasciata ieri, nella quale sono evidenti i confini scolpiti nella polvere della misteriosa superbolla di N44, una nebulosa a emissione a circa 170mila anni luce dalla Terra, nella Grande nube di Magellano
Fortalecendo a Ciência Aberta: interoperabilidade entre CCN e Miguilim
Creators: name: Santos de Jesus, Letícia
name: Ribeiro Teixeira, Camila
name: Freitas de Andrade, Denise Aparecida
name: de Freitas Campos, Fhillipe
name: Simionato Arakaki, Ana Carolina
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada na sessão “O meu Póster em 1 minuto”, da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
The Drivers of Global News Spreading Patterns
Creators: name: Alipour, Shayan
name: Di Marco, Niccolò
name: Avalle, Michele
name: Etta, Gabriele
name: Cinelli, Matteo
name: Quattrociocchi, Walter
Publisher: name: arXiv
Year: 2023
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The web radically changed the dissemination of information and the global spread of news. In this study, we aim to reconstruct the connectivity patterns within nations shaping news propagation globally in 2022. We do this by analyzing a dataset of unprecedented size, containing 140 million news articles from 183 countries and related to 37,802 domains in the GDELT database. Unlike previous research, we focus on the sequential mention of events across various countries, thus incorporating a temporal dimension into the analysis of news dissemination networks. Our results show a significant imbalance in online news spreading. We identify news superspreaders forming a tightly interconnected rich club, exerting significant influence on the global news agenda. To further investigate the mechanisms underlying news dissemination and the shaping of global public opinion, we model countries' interactions using a gravity model, incorporating economic, geographical, and cultural factors. Consistent with previous studies, we find that countries' GDP is one of the main drivers to shape the worldwide news agenda.
A precision measurement of the twist-3 matrix element d(2) and spin structure function g(2) for the proton and deuteron
Creators: name: Depietro, Paul J.
Publisher: name: American University
Year: 2023

description: The polarized spin structure functions gp2 and gd2 have been measured at SLAC via the process of deep inelastic scattering. The data were collected over the kinematic range 0.02 ≤ x ≤ 0.8 and 0.7 (GeV/c)2 ≤ Q2 ≤ 20 (GeV/c) 2 by scattering 29.1 and 32.3 GeV longitudinally polarized electrons from transversely polarized 15NH3 and 6LiD targets. This is the first data set for gp2 with sufficient precision to differentiate between current theoretical models for the proton. The data show that gp2 is consistant with gWW2 as well as the bag model of Strattman and the Chiral model of Weigel while showing that it is inconsistent by several sigma with g 2 = 0 in the region x > 0.2. The absolute value of A2 is significantly smaller than the R positivity limit over the measured range and is also within the Soffer limit. The results for the twist-3 reduced matrix elements dp2 , dd2 and dn2 are also obtained. The Burkhardt-Cottingham sum rule integral and the Efremov-Leader-Taryaev sum rule integral are reported for the experimental kinematic range.
Reply to "Comment on `Theory of Phonon-Assisted Adsorption in Graphene: Many-Body Infrared Dynamics' "
Creators: name: Sengupta, Sanghita
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Based on a new self-energy for atom-phonon interaction, preceding Comment argues about the insufficiency of the mathematical techniques within the Independent Boson Model (IBM) to study physisorption in graphene membranes. In this Reply, we show that the new self-energy reported in the Comment is a perturbative expansion approximated for a 2-phonon process, severely divergent for membrane sizes larger than 100 nm and within its current mathematical form, ill-suited for investigating the physics of physisorption in graphene micromembranes. Additionally, we provide with further evidence of the adsorption rate within the IBM that further reinforces the physical soundness of the mathematical techniques reported in Phys. Rev. B 100, 075429 (2019).
description: 4 pages, 2 figures
Harvests of the heart: Themes from the diaries of nineteenth-century New England farm women
Creators: name: Gessler, Christina Elizabeth
Publisher: name: American University
Year: 2023

description: This dissertation draws upon the previously unexamined and unpublished diaries written by nineteenth-century New England farm women. This dissertation finds that taken as a body, these diaries reveal certain commonalities, which for the purposes of this dissertation are called themes. These are: work, hired help, illness, death, mourning, family relationships and obligations, neighborliness, and socializing. These themes are examined in five case study chapters. The four remaining chapters discuss the rural North, historiography, diary theory, women's history, farming, art and literature, poverty, archiving, preservation, conservation, and female literacy in the nineteenth century. The case-study diarists represent northern New England: Massachusetts, Vermont, New Hampshire, and Maine. They are a cross-section of single, widowed, married, and separated women. Some live in nuclear families, and others with extended families. While the diarists are white, they do not overwhelmingly represent the middle class. Instead, they come from the working and lower-middle classes; only one diarist is middle-class. The discovery of these diaries expands definitions of diary-keeping practices in the nineteenth century, which historians have typically found to be expressive first of an upper-class, but increasingly a growing middle-class consciousness. While the dissertation examines diaries of 135 diarists, the text of the dissertation cannot accommodate all of the voices and circumstances without creating a fictitiously homogenized nineteenth-century New England farm woman diarist. Therefore, information from most of the diaries in this study appears in 18 appendices. These quote liberally from the diaries on the themes of the dissertation. Diarists are further discussed in 3 diary directories created by the dissertation writer, to assist other scholars in locating and studying these archived but largely uncataloged diaries.
Harvests of the heart: Themes from the diaries of nineteenth-century New England farm women
Creators: name: Gessler, Christina Elizabeth
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 43
subject: History, heritage and archaeology
classificationCode: 4303
subject: Historical studies

description: This dissertation draws upon the previously unexamined and unpublished diaries written by nineteenth-century New England farm women. This dissertation finds that taken as a body, these diaries reveal certain commonalities, which for the purposes of this dissertation are called themes. These are: work, hired help, illness, death, mourning, family relationships and obligations, neighborliness, and socializing. These themes are examined in five case study chapters. The four remaining chapters discuss the rural North, historiography, diary theory, women's history, farming, art and literature, poverty, archiving, preservation, conservation, and female literacy in the nineteenth century. The case-study diarists represent northern New England: Massachusetts, Vermont, New Hampshire, and Maine. They are a cross-section of single, widowed, married, and separated women. Some live in nuclear families, and others with extended families. While the diarists are white, they do not overwhelmingly represent the middle class. Instead, they come from the working and lower-middle classes; only one diarist is middle-class. The discovery of these diaries expands definitions of diary-keeping practices in the nineteenth century, which historians have typically found to be expressive first of an upper-class, but increasingly a growing middle-class consciousness. While the dissertation examines diaries of 135 diarists, the text of the dissertation cannot accommodate all of the voices and circumstances without creating a fictitiously homogenized nineteenth-century New England farm woman diarist. Therefore, information from most of the diaries in this study appears in 18 appendices. These quote liberally from the diaries on the themes of the dissertation. Diarists are further discussed in 3 diary directories created by the dissertation writer, to assist other scholars in locating and studying these archived but largely uncataloged diaries.
Dome-shaped magnetic phase diagram of thermoelectric layered cobaltites
Creators: name: Sugiyama, J.
name: Brewer, J. H.
name: Ansaldo, E. J.
name: Itahara, H.
name: Tani, T.
name: Mikami, M.
name: Mori, Y.
name: Sasaki, T.
name: Hebert, S.
name: Maignan, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using muon spin spectroscopy we have found that, for both Na$_x$CoO$_2$ (0.6 $\leq x \leq$ 0.9) and 3- and 4-layer cobaltites, a common low temperature magnetic state (which in some cases is manifest as an incommensurate spin density wave) forms in the CoO$_2$ planes. Here we summarize those results and report a dome-shaped relation between the transition temperature into the low-$T$ magnetic state and the composition $x$ for Na$_x$CoO$_2$ and/or the high-temperature asymptotic limit of thermopower in the more complex 3- and 4-layer cobaltites. This behavior is explained using the Hubbard model on two-dimensional triangular lattice in the CoO$_2$ plane.
description: 4 pages, 4 figures, 1 table
Manipolazione magnetica di spazzatura spaziale
Creators: Valentina Guglielmo
Publisher: name: Media Inaf
Year: 2021

La soluzione per deviare a distanza detriti spaziali potenzialmente pericolosi, o per rallentare satelliti danneggiati in rotazione incontrollata per poterli riparare, si chiama manipolazione magnetica. In particolare, quella proposta dall’Università dello Utah sfrutta le correnti indotte da campi magnetici in movimento nei pezzi metallici costituenti i detriti spaziali. Tutti i dettagli su Nature
Economic significance of commodity return forecasts from the fractionally cointegrated VAR model
Creators: name: Dolatabadi, Sepideh
name: Kumar Narayan, Paresh
name: Orregaard Nielsen, Morten
name: Xu, Ke
name: Dolatabadi, Sepideh
name: Kumar Narayan, Paresh
name: Orregaard Nielsen, Morten
name: Xu, Ke
Publisher: name: Unknown
Year: 2017
Subjects: subject: Financial Economics
subject: Marketing
subject: FOS: Economics and business
subject: commodity markets
subject: economic significance
subject: forecasting
subject: fractional cointegration
subject: futures markets
subject: price discovery
subject: trading rule
subject: vector error correction model

description: Based on recent evidence of fractional cointegration in commodity spot and futures mar- kets, we investigate whether a fractionally cointegrated model can provide statistically and/or economically signicant forecasts of commodity returns. Specically, we propose to model and forecast commodity spot and futures prices using a fractionally cointegrated vector autoregres- sive (FCVAR) model that generalizes the more well-known (non-fractional) CVAR model to allow fractional integration. We derive the best linear predictor for the FCVAR model and perform an out-of-sample forecast comparison with the non-fractional model. In our empirical analysis to daily data on 17 commodity markets, the fractional model is found to be superior in terms of in-sample t and also out-of-sample forecasting based on statistical metrics of forecast comparison. We analyze the economic signicance of the forecasts through a dynamic trading strategy based on a portfolio with weights derived from a mean-variance utility function. Al- though there is much heterogeneity across commodity markets, this analysis leads to statistically signicant and economically meaningful prots in most markets, and shows that prots from both the fractional and non-fractional models are higher on average and statistically more signif- icant than prots derived from a simple moving-average strategy. The analysis also shows that, in spite of the statistical advantage of the fractional model, the fractional and non-fractional models generate very similar prots with only a slight advantage to the fractional model on average.
Lo splendido profilo della galassia Ngc 247
Creators: Marco Galliani
Publisher: name: Media Inaf
Year: 2021

La galassia Ngc 247 è una delle più prossime alla Terra e ci appare quasi esattamente di taglio. I consigli per osservarla, insieme alle principali costellazioni, pianeti e fenomeni visibili nei cieli serali di questo mese
L’accurato censimento delle galassie di mezza età
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2021

Grazie all’analisi degli ultimi dati pubblicati a luglio dal programma osservativo europeo Lega-C, sono disponibili per la prima volta osservazioni astronomiche di alcune migliaia di galassie a un'epoca cosmica compresa tra cinque e otto miliardi di anni fa, con una precisione sufficiente ad analizzare le caratteristiche dettagliate delle popolazioni delle stelle in esse contenute. Fanno parte della collaborazione internazionale anche ricercatrici e ricercatori dell’Istituto nazionale di astrofisica. Tutti i risultati su The Astronomical Journal
Effective collective barrier for magnetic relaxation in frozen ferrofluids
Creators: name: Prozorov, Ruslan
name: Prozorov, Tanya
name: Snezhko, Alexey
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Magnetic relaxation and frequency response were measured in frozen ferrimagnetic colloids of different concentrations. A crossover from reversible to irreversible behavior is observed for concentrated colloids. In irreversible state, magnetic relaxation is time-logarithmic over seven orders of magnitude of experimental time windows. A master curve construction within mean field phenomenological model is applied to extract effective collective barrier as a function of the irreversible magnetization. The barrier logarithmically diverges, providing evidence for self-organized critical behavior during magnetic relaxation in frozen ferrofluids.
Con Ariel all’origine delle proprietà dei pianeti
Creators: Mario Guarcello
Publisher: name: Media Inaf
Year: 2021

Uno studio guidato da Diego Turrini dell’Istituto nazionale di astrofisica illustra il ruolo che potranno rivestire le future osservazioni del telescopio spaziale Ariel per comprendere come il processo di formazione planetaria e l’interazione tra i pianeti giovani e l’ambiente circostante possa plasmare le proprietà finali degli esopianeti
Job Displacement Risk and Severance Pay
Creators: name: Cozzi, Marco
name: Fella, Giulio
name: Cozzi, Marco
name: Fella, Giulio
Publisher: name: Unknown
Year: 2015
Subjects: subject: Financial Economics
subject: Severance Payments
subject: Incomplete Markets
subject: Welfare

description: This paper is a quantitative, equilibrium study of the insurance role of severance pay when workers face displacement risk and markets are incomplete. A key feature of our model is that, in line with an established empirical literature, job displacement entails a persistent fall in earnings upon re-employment due to the loss of tenure. The model is solved numerically and calibrated to the US economy. In contrast to previous studies that have analyzed severance payments in the absence of persistent earning losses, we nd that the welfare gains from the insurance against job displacement aorded by severance pay are sizable. These gains are higher if, as in most OECD countries, severance pay increases with tenure. The result is a consequence of the higher persistence of earnings losses for workers with longer tenure at the time of displacement.
Laffer Curves and Public Goods
Creators: name: Hartwick, John
name: Hartwick, John
Publisher: name: Unknown
Year: 2015
Subjects: subject: Financial Economics
subject: Public Economics
subject: Laffer curves
subject: public goods
subject: income tax invidence

description: We set out and solve a static neoclassical model with a la- bor/leisure choice for agents and a government sector producing a Samuelsonian public good. Numerical solutions vary consid- erably with the elasticity of substitution for commodities in an agent's utility function. We focus on solutions with an income tax rate set by the government (second best solutions). Govern- ment revenue varies with the rate of income tax (expressed in a Laffer Curve) and we observe that such curves generally peak "internally" only for case of "high" elasticity values in the utility function of a representative agent. Inelastic substitution possi- bilities involve the peaking of the La¤er Curve at a corner with the rate of income tax tending to unity. We report on welfare analysis for small changes in the rate of income tax and on first best outcomes (agents charged Samuelson "prices" for the public good).
Forecasting daily political opinion polls using the fractionally cointegrated VAR model
Creators: name: Orregaard Nielsen, Morten
name: Shibaev, Sergei S.
name: Orregaard Nielsen, Morten
name: Shibaev, Sergei S.
Publisher: name: Unknown
Year: 2015
Subjects: subject: Financial Economics
subject: forecasting
subject: fractional cointegration
subject: opinion poll data
subject: vector autoregressive model

description: We examine forecasting performance of the recent fractionally cointegrated vector autoregressive (FCVAR) model. We use daily polling data of political support in the United Kingdom for 2010-2015 and compare with popular competing models at several forecast horizons. Our ndings show that the four variants of the FCVAR model considered are generally ranked as the top four models in terms of forecast accuracy, and the FCVAR model signicantly outperforms both univariate fractional models and the standard cointegrated VAR (CVAR) model at all forecast horizons. The relative forecast improvement is higher at longer forecast horizons, where the root mean squared forecast error of the FCVAR model is up to 15% lower than that of the univariate fractional models and up to 20% lower than that of the CVAR model. In an empirical application to the 2015 UK general election, the estimated common stochastic trend from the model follows the vote share of the UKIP very closely, and we thus interpret it as a measure of Euro-skepticism in public opinion rather than an indicator of the more traditional left-right political spectrum. In terms of prediction of vote shares in the election, forecasts generated by the FCVAR model leading into the election appear to provide a more informative assessment of the current state of public opinion on electoral support than the hung government prediction of the opinion poll.
Kondo and anti-Kondo coupling to local moments in EuB$_6$
Creators: name: Kunes, J.
name: Pickett, W. E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: With a treatment of the 4$f$ states of EuB$_6$ based on LDA+U method, the mixing of Eu $f$ states with B $p$ states around the X point of the Brillouin zone is shown to have unexpected consequences for the effective exchange interactions. We analyze in detail the orbital character of electronic states close to the Fermi level and discuss the effective exchange between the itinerant electrons and the local $4f$ moments. The analysis suggests that the ordered phase may provide the first example of a {\it half metallic semimetal}, and that the physics of EuB$_6$ should be described in terms of a two band Kondo lattice model with parallel (ferromagnetic) coupling of the conduction electrons and antiparallel (antiferromagnetic) coupling of the valence electrons to the local $4f$ moments.
description: 9 pages, 10 figures, accepted to Phys. Rev. B
Additional file 1 of Revealing hidden information in osteoblast’s mechanotransduction through analysis of time patterns of critical events
Creators: name: Ascolani, Gianluca
name: Skerry, Timothy M.
name: Lacroix, Damien
name: Dall’Ara, Enrico
name: Shuaib, Aban
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Figure S1. Cytoplasmic and nuclear biochemical reactions.
Integrable Crosscap States: From Spin Chains to 1D Bose Gas
Creators: name: He, Miao
name: Jiang, Yunfeng
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The notion of a crosscap state, a special conformal boundary state first defined in 2d CFT, was recently generalized to 2d massive integrable quantum field theories and integrable spin chains. It has been shown that the crosscap states preserve integrability. In this work, we first generalize this notion to the Lieb-Liniger model, which is a prototype of integrable non-relativistic many-body systems. We then show that the defined crosscap state preserves integrability. We derive the exact overlap formula of the crosscap state and the on-shell Bethe states. As a byproduct, we prove the conjectured overlap formula for integrable spin chains rigorously by coordinate Bethe ansatz. It turns out that the overlap formula for both models take the same form as a ratio of Gaudin-like determinants with a trivial prefactor. Finally we study quench dynamics of the crosscap state, which turns out to be surprisingly simple. The stationary density distribution is simply a constant. We also derive the analytic formula for dynamical correlation functions in the Tonks-Girardeau limit.
description: 38 pages
Neutrino Oscillations at low energy long baseline experiments in the presence of nonstandard interactions and parameter degeneracy
Creators: name: Yasuda, Osamu
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the analytical expression of the oscillation probabilities at low energy long baseline experiments, such as T2HK and T2HKK in the presence of nonstandard interactions (NSIs). We show that these experiments are advantageous to explore the NSI parameters ($ε_D$, $ε_N$), which were suggested to be nonvanishing to account for the discrepancy between the solar neutrino and KamLAND data. We also show that, when the NSI parameters are small, parameter degeneracy in the CP phase $δ$, $ε_D$ and $ε_N$ can be resolved by combining data of the T2HK and T2HKK experiments.
description: 22 pages, 7 figures. Some typos corrected, a couple of references added
title: Αυτισμός - Αναπτυξιακές και γνωσιακές διαταραχές ανά ηλικιακή ομάδα
title: Autism - Developmental and cognitive disorders per age group
titleType: AlternativeTitle
Creators: name: Ροϊνά, Ελένη
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Διαταραχές αυτιστικού φάσματος (ΔΑΦ)
Αναπτυξιακές διαταραχές
Γνωσιακές διαταραχές
Γήρανση με ΔΑΦ

description: Ο αυτισμός έχει χαρακτηριστεί σε μεγάλο βαθμό ως μία ψυχιατρική και παιδική διαταραχή. Ωστόσο, ο αυτισμός είναι μια δια βίου νευρολογική κατάσταση που εξελίσσεται με την πάροδο του χρόνου μέσω μίας εξαιρετικά ετερογενούς τροχιάς. Αυτές οι τάσεις δεν έχουν μελετηθεί σε σχέση με τις κανονικές τροχιές γήρανσης, οπότε υπάρχει μικρό δείγμα σχετικών ερευνών για τη γήρανση σε άτομα με αυτισμό. Οι ερευνητικές μελέτες για ηλικιωμένους ενήλικες με διαταραχές του φάσματος του αυτισμού (ΔΑΦ) είναι αρκετά περιορισμένες σε σύγκριση με τις μελέτες παιδιών και νεότερων ενηλίκων με ΔΑΦ. Αυτό το άρθρο εξετάζει την τρέχουσα βιβλιογραφία σχετικά με μια σειρά ποιοτικών αποτελεσμάτων της ζωής των ηλικιωμένων ενηλίκων με ΔΑΦ. Η παρούσα μελέτη επικεντρώνεται στη γνωστική ανάπτυξη ατόμων με διαταραχές του φάσματος του αυτισμού καθ 'όλη τη διάρκεια της ζωής τους, κάνοντας μια σύγκριση και επισημαίνοντας τις διαφορές την γνωστική ανάπτυξη στα υγιή άτομα, προκειμένου να κατανοήσουμε καλύτερα τα προβλήματα που δημιουργούν οι Διαταραχές Αυτιστικού Φάσματος.
Localized tachyons in C^3/Z_N
Creators: name: Morrison, David R.
name: Narayan, K.
name: Plesser, M. Ronen
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the condensation of localized closed string tachyons in C^3/Z_N nonsupersymmetric noncompact orbifold singularities via renormalization group flows that preserve supersymmetry in the worldsheet conformal field theory and their interrelations with the toric geometry of these orbifolds. We show that for worldsheet supersymmetric tachyons, the endpoint of tachyon condensation generically includes ``geometric'' terminal singularities (orbifolds that do not have any marginal or relevant Kahler blowup modes) as well as singularities in codimension two. Some of the various possible distinct geometric resolutions are related by flip transitions. For Type II theories, we show that the residual singularities that arise under tachyon condensation in various classes of Type II theories also admit a Type II GSO projection. We further show that Type II orbifolds entirely devoid of marginal or relevant blowup modes (Kahler or otherwise) cannot exist, which thus implies that the endpoints of tachyon condensation in Type II theories are always smooth spaces.
description: Latex, 50 pgs incl. appendices, 5 eps figs; v2. refs+minor textual editions added
Additional file 1 of Contextual and individual determinants of tooth loss in adults: a multilevel study
Creators: name: Roberto, Luana Leal
name: Silveira, Marise Fagundes
name: Paula, Alfredo Mauricio Batista De
name: Efigênia Ferreira E Ferreira
name: Martins, Andréa Maria Eleutério De Barros Lima
name: Haikal, Desirée Sant’ana
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Additional file 1: Table S1. Sensitivity analysis performed with multilevel logistic regression to tooth loss (dichotomized by median) in Brazilian adults (n = 9139). SBBrasil Project, 2010. Table S2. Analysis of the differential loss among included and excluded Brazilian adults of the final regression model due to missing of independent variables. SBBrasil Project, 2010.
Displaced humanity: Power politics and international refugee regime
Creators: name: Johnson, Sarah Nicole
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 48
subject: Law and legal studies
classificationCode: 4803
subject: International and comparative law

description: This dissertation explores variance in state responses to refugee crises. It argues that contrary to public perception, assistance to refugees is more of a realist than humanitarian endeavor. In other words, states provide assistance based upon their perceived national interests and not necessarily upon the interests of refugees. Consequently, the mechanism designed to assist refugees, the international refugee regime (IRR), is often stretched to accommodate state goals and assist states contain and mitigate the potentially disruptive impact of refugee crises. This argument is developed by utilizing International Relations theories to explain state responses to refugee crises and by applying those theories to four in-depth case studies: Hungary 1956, Iraq 1991, Bosnia 1993--1995 and Rwanda 1994--1997. Refugee crises involving populations that are of interest to potential intervening states receive assistance; IRR principles and procedures can even be changed to accommodate them. Refugees of "less value," those for whom the cost/benefit ratio for assistance is deemed to be too high, receive less assistance. The Hungarian crisis represents the former and the Rwandan crises the latter. In between these extremes are crises in which state interests exist and are mediated through the refugee regime. In other words, refugee or would be refugee populations are assisted but in ways that meet the needs of the intervening states more than the populations being assisted. The creation of the Iraqi and Bosniac safe areas, which created millions of internally displaced persons, is an example of this approach. The dissertation concludes that a more realist/security-focused approach to refugee crises is needed to effectively assist future refugee populations.
Światowe i krajowe ceny żywności w latach 2016-2017
Global and Domestic Food Prices During 2016-2017
Creators: name: Świetlik, Krystyna
name: Świetlik, Krystyna
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: International Relations/Trade
subject: food
subject: supply shocks
subject: unstable prices
subject: global market
subject: European Union
subject: żywność
subject: szoki podażowe
subject: niestabilność cen
subject: rynek globalny
subject: Unia Europejska

description: The opening of the Polish market as a result of systemic transformation and European integration increased its dependence on changes in global factors. During the last decade global prices and food supplies experienced serious shocks, which had significant consequences for the Polish food market. The objective of this paper is to present changes in food prices in Poland during 2016-17 against a backdrop of global trends, with particular emphasis on the EU market, a description of the strength of their mutual relationship and an indication of the factors affecting these processes. As a result of the analyses, it was concluded that during the studied period prices in Poland increased faster that in the EU, but more slowly than global prices. They showed a smaller tendency to oscillate than in external markets and a very high correlation with changes in EU prices. The connection with the EU market was particularly apparent in the case of prices of dairy products, cereal crops, pork, vegetable oils and sugar. / Otwarcie polskiej gospodarki w wyniku transformacji systemowej i integracji europejskiej zwiększyło jej zależność od zjawisk o charakterze globalnym. W ostatniej dekadzie światowe ceny i podaż żywności doświadczały poważnych szoków, co miało istotne konsekwencje dla polskiego rynku żywnościowego. Celem artykułu jest przedstawienie zmian cen żywności w Polsce w latach 2016-2017 na tle tendencji występujących na rynkach światowych, ze szczególnym uwzględnieniem rynku unijnego, określenie siły ich wzajemnych powiązań oraz wskazanie czynników warunkujących te procesy. W wyniku przeprowadzonych analiz stwierdzono, że w Polsce w badanym okresie ceny żywności rosły szybciej niż w UE, ale wolniej niż na rynkach światowych, wykazywały mniejszą wahliwość niż na rynkach zewnętrznych oraz bardzo wysoką korelację ze zmianami cen w UE. Powiązanie z rynkiem unijnym było szczególnie widoczne w przypadku cen produktów mlecznych, zbóż, mięsa wieprzowego, roślin oleistych i cukru.
description: DOI: 10.22630/PRS.2018.18.2.56
Bulk superconductivity in Pb-substituted BiS$_{\bf 2}$-based compounds studied by hard-x-ray spectroscopy
Creators: name: Yamasaki, A.
name: Oguni, T.
name: Hayashida, T.
name: Miyazaki, K.
name: Tanaka, N.
name: Nakagawa, K.
name: Tamura, K.
name: Mimura, K.
name: Kawamura, N.
name: Fujiwara, H.
name: Nozue, G.
name: Ose, A.
name: Kanai-Nakata, Y.
name: Higashiya, A.
name: Hamamoto, S.
name: Tamasaku, K.
name: Yabashi, M.
name: Ishikawa, T.
name: Imada, S.
name: Sekiyama, A.
name: Sakata, H.
name: Demura, S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In this study, we investigate the bulk electronic structure of Pb-substituted LaO$_{0.5}$F$_{0.5}$BiS$_2$ single crystals, using two types of hard-x-ray spectroscopy. High-energy-resolution fluorescence-detected x-ray absorption spectroscopy revealed a spectral change at low temperatures. Using density functional theory (DFT) simulations, we find that the temperature-induced change originates from a structural phase transition, similar to the pressure-induced transition in LaO$_{0.5}$F$_{0.5}$BiS$_2$. This finding suggests that the mechanism of bulk superconductivity induced by Pb substitution is the same as that under high pressure. Furthermore, a novel low-valence state with a mixture of divalent and trivalent Bi ions is discovered using hard x-ray photoemission spectroscopy with the aid of DFT calculations.
description: 8 pages, 6 figures, 1 table