cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Counterexample to the Bohigas Conjecture for Transmission Through aOne-Dimensional Lattice
Creators: name: Elkamshishy, Ahmed A.
name: Greene, Chris H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Resonances in particle transmission through a 1D finite lattice are studied in the presence of a finite number of impurities. Although this is a one-dimensional system that is classically integrable and has no chaos, studying the statistical properties of the spectrum such as the level spacing distribution and the spectral rigidity shows quantum chaos signatures. Using a dimensionless parameter that reflects the degree of state localization, we demonstrate how the transition from regularity to chaos is affected by state localization. The resonance positions are calculated using both the Wigner-Smithtime-delay and a Siegert state method, which are in good agreement. Our results give evidence for the existence of quantum chaos in one dimension which is a counter-example to the Bohigas-Giannoni-Schmit conjecture.
Workshop day 4: Preparing grey willow for basket making
Creators: name: Parker, Verdena
name: Ammon, Danny
name: Begay, Kayla
name: George-Moore, Melodie
name: Jackson, Silis
name: Newbold, Lindsey
name: Spence, Justin
name: Lincoln, Perry
name: Parker, Otis
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-250711-07; video files VP-250711-07-1 through VP-250711-07-4: A demonstration of how to turn grey willow twigs into basket-making materials, in Hupa and English. Video file VP-250711-07-4 corresponds to the audio file; video files VP-250711-07-1 through VP-250711-07-3 contain footage of the river and people standing near it. Recorded at Tish-tang-ah-ding as part of a language workshop in Hoopa Valley. The participants identified here were present at most sessions during the workshop; additional people were also present, some of whom participate in the conversation. The audio recording was previously deposited with the Endangered Language Archive (ELAR) with identifier "0186-20140318 - Preparing grey willow for basket weaving," part of the collection "Expanding the Documentation and Description of Hupa (Athabaskan)" (collection ID hupa-campbell-0186).
New Temperature and Metallicity Scale of Cool Giants from K-band Spectra
Creators: name: Ghosh, Supriyo
name: Ojha, D. K.
name: Ninan, J. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present here quantitative diagnostic tools for cool giants that employ low-resolution near-infrared spectroscopy in the $K$-band for stellar population studies. In this study, a total of 260 cool giants (177 stars observed with X-shooter and 83 stars observed with NIFS) are used covering a wider metallicity range than in earlier works. We measure equivalent widths of some of the selected important $K$-band spectral features like Na I, Fe I, and $^{12}$CO after degrading the spectral resolution (R $\sim$ 1200) to investigate the spectral behavior with fundamental parameters (e.g. effective temperature and metallicity). We derive empirical relations to measure effective temperature using the $^{12}$CO first-overtone band at 2.29 $μ$m and 2.32 $μ$m and show a detailed quantitative metallicity dependence of these correlations. We find that the empirical relations based on solar-neighborhood stars can incorporate large uncertainty in evaluating $T_{eff}$ for metal-poor or metal-rich stars. Furthermore, we explore all the spectral lines to establish the empirical relation with metallicity and find that the quadratic fit of the combination of Na I and $^{12}$CO at 2.29 $μ$m lines yields a reliable empirical relation at [$Fe/H$] $\leq$ $-$0.4 dex, while a linear fit of any line offers a good metallicity scale for stars having [$Fe/H$] $\geq$ 0.0 dex.
description: 15 pages, accepted for publication in MNRAS
Flexural Behavior of R/C Beams Strengthened with CFRP Sheets or Fabric
Creators: name: Alagusundaramoorthy, P.
name: Harik, Issam E.
name: Choo, Ching Chiaw
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2002
Subjects: subject: Transportation Engineering

description: The resistance to electro-chemical corrosion, high-strength to weight ratio, larger creep strain, fatigue resistance, non-magnetic and non-metallic properties of carbon fiber reinforced polymer (CFRP) composites offer a viable alternative to bonding of steel plates in repair and rehabilitation of reinforced concrete structures. The objective of this investigation is to study the effectiveness of externally bonded CFRP sheets or fabric in increasing the flexural strength of concrete beams. Four-point bending flexural tests are conducted up to failure on nine concrete beams strengthened with different layouts of CFRP sheets and fabric, and three beams with different layouts of anchored CFRP sheets. An analytical procedure, based on compatibility of deformations and equilibrium of forces, is presented to predict the flexural behavior of beams strengthened with FRP sheets and fabric. Comparisons are made between the test results and the analytical calculations.  Results of the testing showed that the flexural strength is increased up to 40% on beams strengthened with two layers of CFRP fabric, 49% for beams strengthened with two 1.42 mm thick CFRP sheets, and 58% on beams strengthened with two anchored 4.78 mm CFRP sheets.
Platyophyra vorax Kahl 1926
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Colpodea
Cyrtolophosidida
Platyophryidae
Platyophyra
Platyophyra vorax

description: Platyophyra vorax Kahl, 1926
Distribution. BRAZIL: Paraná River between the Nupelia’s Field Station and the district of Porto São José, São Pedro do Paraná (Buosi et al. 2014 b, 2015), (Ad). DOMINICAN REPUBLIC: (Foissner et al. 2003).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 26, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
Workshop day 4: Discussion of house and cemetery at Tish-tang-ah-ding
Creators: name: Parker, Verdena
name: Ammon, Danny
name: Begay, Kayla
name: George-Moore, Melodie
name: Jackson, Silis
name: Newbold, Lindsey
name: Spence, Justin
name: Lincoln, Perry
name: Parker, Otis
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio and video files VP-250711-06: Discussion of Verdena's great-grandmother's traditional house and the cemetery at Tish-tang-ah-ding, in Hupa and English. Recorded at Tish-tang-ah-ding as part of a language workshop in Hoopa Valley. The participants identified here were present at most sessions during the workshop; additional people were also present, some of whom participate in the conversation. The audio recording was previously deposited with the Endangered Language Archive (ELAR) with identifier "0186-20140318 - Grandmother's house and cemetery," part of the collection "Expanding the Documentation and Description of Hupa (Athabaskan)" (collection ID hupa-campbell-0186).
An Update on Models of Neutrino Masses and Mixings
Creators: name: Altarelli, Guido
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: At the School I gave three lectures on neutrino masses and mixings. Much of the material covered in my first two lectures is written down in a review on the subject that I published not long ago with F. Feruglio \cite{rev}. Here, I make a relatively short summary (with updates) of the content of my first two lectures, referring to our review for a more detailed presentation, and then I expand on the content of the third lecture which was dedicated to recent work on A4 models of tri-bimaximal neutrino mixing which were not covered in the review.
description: Lectures given at IPM-LHP06, Tehran, Iran; PSN: IPM-LHP06-sch. 14 pages, 1 figure Typos corrected, one reference added
Fast beam stacking using RF barriers
Creators: name: Chou, W.
name: Capista, D.
name: Griffin, J.
name: Ng, K-Y.
name: Wildman, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Two barrier RF systems were fabricated, tested and installed in the Fermilab Main Injector. Each can provide 8 kV rectangular pulses (the RF barriers) at 90 kHz. When a stationary barrier is combined with a moving barrier, injected beams from the Booster can be continuously deflected, folded and stacked in the Main Injector, which leads to doubling of the beam intensity. This paper gives a report on the beam experiment using this novel technology.
description: 2007 Particle Accelerator Conference (PAC07)
Epithelium is required for maintaining FGFR-2 expression levels in facial Mesenchyme of the developing chick embryo
Creators: name: Matovinovic, Elizabeth
Publisher: name: University of British Columbia
Year: 2009

description: In the developing chick embryo, FGFR-2 expression patterns correlate with outgrowth of facial prominences: frontonasal mass prominences which form the prenasal cartilage and upper beak express high levels of FGFR-2 receptor while maxillary prominences which form the flattened corners of the beak and palatal shelves express low FGFR-2 transcript levels. Facial epithelium is an abundant source of FGFs and is required to support outgrowth of mesenchymal tissue including cartilage rod formation. Since FGFR-2 is highly expressed in regions of facial outgrowth and epithelium is required for outgrowth of facial prominences, epithelium could be required to maintain FGFR-2 transcripts in facial mesenchyme. To test this hypothesis, we removed epithelium to inhibit outgrowth of regions of the embryonic face, grafted frontonasal mass and maxillary prominences into a host limb bud and then examined changes in FGFR-2 expression using in situ hybridization. We also hybridized adjacent sections with collagen II probe to identify regions undergoing chondrogenesis. Our results indicate that removal of epithelium from frontonasal mass lead to a decrease in FGFR-2 and collagen II expression 24 hours after grafting to host and that neither FGFR-2 nor collagen II expression increased to expected levels at 48 hours. These results suggest that there are signals in the epithelium required for increasing FGFR-2 and collagen II gene transcription and the expression of these genes are linked to outgrowth of facial prominences. We localized FGF8 transcripts in the developing chick face to determine whether FGF8 is a putative epithelial signal required for FGFR-2 expression. Our results indicate that FGF8 ectodermal expression does not overlap FGFR-2 expression in mesenchymal tissue and therefore is not a signal required for the expression of this receptor.
Workshop day 4: Discussion of houses at Tish-tang-ah-ding
Creators: name: Parker, Verdena
name: Ammon, Danny
name: Begay, Kayla
name: George-Moore, Melodie
name: Jackson, Silis
name: Newbold, Lindsey
name: Spence, Justin
name: Lincoln, Perry
name: Parker, Otis
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio files VP-250711-03, VP-250711-04, and VP-250711-05; video files VP-250711-03, VP-250711-04, VP-250711-05-1, and VP-250711-05-2: Discussion of Verdena's great-grandmother's houses at Tish-tang-ah-ding, in Hupa and English. VP-250711-03 ends abruptly due to technical issues. The discussion is started over in audio file VP-250711-04, but the video camera was not re-started right away so video file VP-250711-04 starts around 2:40 of the corresponding audio file. A complete third take was recorded in audio file VP-250711-05 and video file VP-250711-05-1. Video file VP-250711-05-2 contains footage of the site along with some additional commentary in English in the background. Recorded at Tish-tang-ah-ding as part of a language workshop in Hoopa Valley. The participants identified here were present at most sessions during the workshop; additional people were also present, some of whom participate in the conversation.
Anomalous topological edge states in non-Hermitian piezophononic media
Creators: name: Gao, Penglin
name: Willatzen, Morten
name: Christensen, Johan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The bulk-boundary or bulk-edge correspondence is a principle relating surface confined states to the topological classification of the bulk. By combining non-Hermitian ingredients in terms of gain or loss with media that violate reciprocity, an unconventional non-Bloch bulk-boundary correspondence leads to unusual localization of bulk states at boundaries$-$a phenomenon coined non-Hermitian skin effect. Here we \textcolor{black}{numerically} employ the acoustoelectric effect in electrically biased and layered piezophononic media as a solid framework for non-Hermitian and nonreciprocal topological mechanics in the MHz regime. Thanks to a non-Hermitian skin effect for mechanical vibrations, we find that the bulk bands of finite systems are highly sensitive to the type of crystal termination, which indicates a failure of using traditional Bloch bands to predict the wave characteristics. More surprisingly, when reversing the electrical bias, we unveil how topological edge and bulk vibrations can be harnessed either at the same or opposite interface. Yet, while bulk states are found to display this unconventional skin effect, we further discuss how in-gap edge states in the same instant, counterintuitively are able to delocalize along the entire layered medium. We foresee that our predictions will stimulate new avenues in echo-less ultrasonics based on exotic wave physics.
Shear Strength of R/C Beams Wrapped with CFRP Fabric
Creators: name: Alagusundaramoorthy, P.
name: Harik, Issam E.
name: Choo, Ching Chiaw
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2002
Subjects: subject: Transportation Engineering

description: The emergence of high strength epoxies has enhanced the feasibility of increasing the shear strength of concrete beams by wrapping with carbon fiber reinforced polymer (CFRP) fabric. The objective of this investigation is to evaluate the increase in shear strength of concrete beams wrapped with different configurations of CFRP fabric. Shear tests are conducted up to failure on two reinforced concrete control beams and twelve reinforced concrete beams wrapped with four different configurations of CFRP fabric. An analytical procedure is presented to predict the shear strength of beams wrapped with CFRP fabric. Comparisons are made between the test results and the analytical calculations. The shear strength is increased up to 33% on concrete beams wrapped with CFRP fabric at an angle of ± 45° to the longitudinal axis of the beam.
title: A study of cross-national and sub-cultural differences in job attitudes of Nigerian employees
Creators: name: Adigun, Isaac Olusola
Publisher: name: University of Kent
Year: 1989

description: This study reports the results of two studies that examined the influence of culture on job attitudes. It is postulated that organisational theories developed in advanced nations are not applicable in developing nations because of the variations among different countries in cultural values which the worker brings with him/her to the workplace and which consequently affect his orientations to work. The first study which is exploratory in nature, focuses on cross-national differences using a sample of 31 British and 43 Nigerian subjects. The results provide evidence for cross-national differences in job attitudes. Content analyses of the critical incidents collected from the two national samples show that, the British subjects display a relationship of `motivator' and `hygiene' factors to `high' or 'low' job attitude which are compatible with the motivator-hygiene theory, whilst the same is less true of the Nigerian sample. The second (main) study concentrates on job attitudes of Nigerian employees (N =350) and in particular, among the three sub-cultural groups dominating the entire population. Critical incident themes obtained among the Nigerian sample in the exploratory study are used to construct a questionnaire for the study. The results show that (i) job motivation in Nigeria is influenced by seven factors that showed some support for the components of some process and content theories; all but two of the seven factors appear to affect job motivation both positively and negatively and therefore contradicts Herzberg position on the unilateral influences of motivational factors, (ii) there exists similar pattern of antecedents of organisational commitment between the Nigerian employees and their counterparts in other cultures. Across the three sub-cultural groups studied, the overall results seem to indicate that employees' cultural background has little impact on their perceptions of job motivation and commitment. However, a number of different organisational and personal variables were found to affect responses. Taken together, the results of both studies indicate that job attitudes differ from one country to another due to cultural variations in frames of reference, orientations and values prevailing in different countries. However, employees' job attitudes do not significantly differ among various sub-cultural groups in a given country. Practical and research implications of the findings are discussed as well as directions for future research.
Efficient switching of Rashba spin splitting in wide modulation-doped quantum wells
Creators: name: Gvozdic, D. M.
name: Ekenberg, U.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrate that the size of the electric-field-induced Rashba spin splitting in an 80 nm wide modulation-doped InGaSb quantum well can depend strongly on the spatial variation of the electric field. In a slightly asymmetric quantum well it can be an order of magnitude stronger than for the average uniform electric field. For even smaller asymmetry spin subbands can have wave functions and/or expectation values of the spin direction that are completely changed as the in-plane wave vector varies. The Dresselhaus effect can give an anticrossing at which the spin rapidly flips.
description: 4 pages, 3 figures
Evaluation of Post-Interchange Guide Signs
Creators: name: Barrett, Monica L.
name: Pigman, Jerry G.
name: Langley, Ronald E.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2002
Subjects: subject: Transportation Engineering

description: There are four basic types of guide signs related to tourist and recreational facilities, each with its own requirements and purpose. These include limited supplemental guide signs, cultural and recreational supplemental guide signs, fifth legend logos, and tourist oriented directional signs. Under the category of limited supplemental guide signs is a new pilot program to include a similar type sign at 10- and 20-mile points before an interchange. These signs are called post-interchange guide signs.  This report evaluates these experimental post-interchange guide signs. This evaluation included a before and after study of crash information including total numbers and trends, a survey of attraction visitors regarding motorist understanding of the signs, and a review of attendance records for the attractions.  The data shows the signs caused no increased crash risks for drivers. The survey results showed the signs were large enough for tourists to view with ease and that visitation increased because of the signs. Comments from the attraction representatives reinforced the fact that the signs were beneficial and should continue to be used.  Therefore, it appears that the use of post-interchange brown guide signs has been successful and that additional installations at selected locations are warranted.
Word on the street: politicians, mediatized street protest, and responsiveness on social media
Creators: name: Wouters, Ruud
name: Staes, Luna
name: Van Aelst, Peter
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Mental Health

description: Communicative responsiveness of politicians to public opinion signals has become increasingly important for politicians’ electoral fate and citizens’ sense of feeling represented. Although politicians can communicate directly with the public via social media, little is known about the extent, conditions, and favorability of politicians’ responsiveness on social media to public opinion cues. This paper scrutinizes politicians’ responsiveness to one particular public opinion signal: street protest. Do politicians respond to street protest on social media? And if so, when, and how do they react? We address these questions by means of two datasets: (1) a protest event dataset of all protests staged in Brussels (Belgium) between July 2017 and June 2019 (N = 124); and (2) a social media dataset containing all Facebook messages (N = 36.323) and tweets (N = 142.596) by Belgian politicians (N = 236) in the days surrounding each protest. Results show that politicians do respond to protest and its issue; the lion’s share of social media messages supporting protesters. Protest that is large, (inter)nationally coordinated, and organized on socio-cultural issues is more frequently discussed by politicians; left-wing, opposition, and issue-owning politicians are more responsive as well. Whereas especially left-wing politicians endorse protests, right-wing politicians are more prone to discredit it. Responsiveness is thus asymmetric across the political spectrum. Our findings have implications for democratic representation and its challenges in hybrid media systems.
Phase Transitions in Germanium Telluride Nanoparticle Phase-Change Materials Studied by Time-Resolved X-Ray Diffraction
Creators: name: Michel, Ann-Katrin U.
name: Donat, Felix
name: Siegfried, Aurelia
name: Yarema, Olesya
name: Fang, Hanbing
name: Yarema, Maksym
name: Wood, Vanessa
name: Müller, Christoph R.
name: Norris, David J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Germanium telluride (GeTe), a phase-change material, is known to exhibit four different structural phases: three at room temperature (one amorphous and two crystalline, $α$ and $γ$) and one at high temperature (crystalline $β$). Because transitions between the amorphous and crystalline phases lead to significant changes in material properties (e.g., refractive index and resistivity), GeTe has been investigated as a phase-change material for photonics, thermoelectrics, ferroelectrics, and spintronics. Consequently, the temperature-dependent phase transitions in GeTe have been studied for bulk and thin-film GeTe, both fabricated by sputtering. Colloidal synthesis of nanoparticles offers a more flexible fabrication approach for amorphous and crystalline GeTe. These nanoparticles are known to exhibit size-dependent properties, such as an increased crystallization temperature for the amorphous-to-$α$ transition in sub-10\,nm GeTe particles. The $α$-to-$β$ phase transition is also expected to vary with size, but this effect has not yet been investigated for GeTe. Here, we report time-resolved X-ray diffraction of GeTe nanoparticles with different diameters and from different synthetic protocols. We observe a non-volatile amorphous-to-$α$ transition between 210$^{\circ}$C and 240$^{\circ}$C and a volatile $α$-to-$β$ transition between 370$^{\circ}$C and 420$^{\circ}$C. The latter transition was reversible and repeatable. While the transition temperatures are shifted relative to the values known for bulk GeTe, the nanoparticle-based samples still exhibit the same structural phases reported for sputtered GeTe. Thus, colloidal GeTe maintains the same general phase behavior as bulk GeTe while allowing for more flexible and accessible fabrication. Therefore, nanoparticle-based GeTe films show great potential for applications, such as in active photonics.
Populist platform strategies: a comparative study of social media campaigning by Nordic right-wing populist parties
Creators: name: Schwartz, Sander Andreas
name: Nelimarkka, Matti
name: Larsson, Anders Olof
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Science Policy

description: Social media platforms are increasingly becoming an important tool to mobilize populist right-wing issues and movements. This study provides comparative insights into the activity and engagement of right-wing populist parties on three social media platforms (Facebook, Instagram, and Twitter) in four Nordic countries (Sweden, Denmark, Norway, and Finland). Based on a quantitative analysis of social media data, we conclude that Facebook is the most successful platform for right-wing populists across all four countries and that the right-wing populists in Sweden have the strongest position across platforms. Furthermore, we explore the content of the most engaging status updates qualitatively to identify a potential set of populist platform strategies. We conclude that the right-wing populist platform strategies are not radically different from other parties though the populist agenda and anger-based style of communication may cater particularly well to the network media logics of each platform. This could explain the relative success of right-wing populist parties that we identify in all four Nordic countries, even though it is important to note that the success is only moderate in some cases with notable national variation.
Passant par Paris
Creators: name: Musée National Des Arts Et Traditions Populaires (Paris)
name: Centre D'ethnologie Française
Publisher: name: École des Hautes Études en Sciences Sociales; Institut  interdisciplinaire d'anthropologie du contemporain (Paris); Laboratoire d'anthropologie et d'histoire de l'institution de la culture (Paris)
Year: 2024

Abstract
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Parental mediation of online interactions and its relation to adolescents’ contacts with new people online: the role of risk perception
Creators: name: Dedkova, Lenka
name: Mýlek, Vojtěch
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Science Policy
subject: Mental Health

description: To ensure their children's safety online, parents can utilize number of strategies, including active and restrictive parental mediation. Active mediation encompasses parents discussing and advising children about safe usage of the internet, whereas restrictive mediation means limiting children's internet usage. Both strategies aim to affect children's online behavior, especially to minimize online risks. Using a sample of 1031 adolescents aged 11–17 (54% females) and structural equation modeling, we focused on the active and restrictive parental mediation of online interactions and their connections to adolescents’ potentially risky online contacts with new people. In addition, we considered the indirect effect of parental mediation on adolescents’ behavior through adolescents’ risk perception. In this way, we captured one of the potential explanatory mechanisms through which the parental mediation's effect occurs. The results showed that restrictive mediation decreased contacts with new people by increasing adolescents’ risk perception of this activity. In contrast, active mediation had neither a direct nor indirect effect on adolescents’ online contacts. The results enrich the theory of parental mediation by showing that risk perception is an important factor to consider when researchers examine the effects of parental mediation on children's potentially risky online behavior.
Soft power, sharp power? Exploring RT’s dual role in Russia’s diplomatic toolkit
Creators: name: Glazunova, Sofya
name: Bruns, Axel
name: Hurcombe, Edward
name: Montaña-Niño, Silvia Ximena
name: Coulibaly, Souleymane
name: Obeid, Abdul Karim
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: This article examines the multilingual audiences of Russian outlet RT on Facebook. RT is a state media outlet known for spreading strategic Kremlin narratives and disinformation in support of Russia’s domestic and foreign policy objectives to large and multilingual global audiences. RT serves as a central pillar of the Russian information influence apparatus, and an instrument of both ‘soft’ and ‘sharp power’, the latter describing the use of information manipulation to interfere with foreign public spheres. While many studies have concentrated on the English-language content of RT to understand its impact on Western democracies, in this article, we examine the sharing of RT content across all six RT languages, and we investigate what audiences from the six language communities share RT content on Facebook. We find ideologically diverging patterns across these communities, with particular resonance for RT content targeting the political faultlines in different regions and countries and conclude that RT’s role as a tool for sharp power is now dominant.
Evangelisches Missionswerk in Deutschland (Hrsg.), Siehe; es ist ein Raum bei mir
Creators: name: Wagner, Wolfgang
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 57 Nr. 4 (2008): Ökumenische Rundschau, Band 57, Heft 4
Weak Harnack inequalities for eigenvalues and constant rank theorems
Creators: name: Székelyhidi, Gábor
name: Weinkove, Ben
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider convex solutions of nonlinear elliptic equations which satisfy the structure condition of Bian-Guan. We prove a weak Harnack inequality for the eigenvalues of the Hessian of these solutions. This can be viewed as a quantitative version of the constant rank theorem.
description: 15 pages
Update of eta-eta' mixing from J/psi->VP decays
Creators: name: Escribano, Rafel
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The $η$-$η^\prime$ mixing angle is deduced from an updated phenomenological analysis of $J/ψ$ decays into a vector and a pseudoscalar meson. Corrections due to non-ideal $ω$-$ϕ$ mixing are confirmed to be crucial to find $θ_P=(-16.9\pm 1.7)^\circ$, in agreement with most recent analyses. The newly reported values of $B(J/ψ\toρπ)$ by the BABAR and BES Collaborations make more difficult a reasonable description of data.
description: 6 pages, uses aipproc style. Talk presented at SCADRON 70: Workshop on "Scalar Mesons and Related Topics", Lisbon, Portugal, 11-16 February 2008
Radio recombination lines from the largest bound atoms in space
Creators: name: Stepkin, S. V.
name: Konovalenko, A. A.
name: Kantharia, N. G.
name: Shankar, N. Udaya
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we report the detection of a series of radio recombination lines (RRLs) in absorption near 26 MHz arising from the largest bound carbon atoms detected in space. These atoms, which are more than a million times larger than the ground state atoms are undergoing delta transitions (n~1009, Delta n=4) in the cool tenuous medium located in the Perseus arm in front of the supernova remnant, Cassiopeia A. Theoretical estimates had shown that atoms which recombined in tenuous media are stable up to quantum levels n~1500. Our data indicates that we have detected radiation from atoms in states very close to this theoretical limit. We also report high signal-to-noise detections of alpha, beta and gamma transitions in carbon atoms arising in the same clouds. In these data, we find that the increase in line widths with quantum number (proportional to n^5) due to pressure and radiation broadening of lines is much gentler than expected from existing models which assume a power law background radiation field. This discrepancy had also been noted earlier. The model line widths had been overestimated since the turnover in radiation field of Cassiopeia A at low frequencies had been ignored. In this paper, we show that, once the spectral turnover is included in the modeling, the slower increase in line width with quantum number is naturally explained.
description: 5 pages, 4 figures, accepted for publication in MNRAS
SN 2018gjx reveals that some SNe Ibn are SNe IIb exploding in dense circumstellar material
Creators: name: Prentice, S. J.
name: Maguire, K.
name: Boian, I.
name: Groh, J.
name: Anderson, J.
name: Barbarino, C.
name: Bostroem, K. A.
name: Burke, J.
name: Clark, P.
name: Dong, Y.
name: Fraser, M.
name: Galbany, L.
name: Gromadzki, M.
name: Gutiérrez, C. P.
name: Howell, D. A.
name: Hiramatsu, D.
name: Inserra, C.
name: James, P. A.
name: Kankare, E.
name: Kuncarayakti, H.
name: Mazzali, P. A.
name: McCully, C.
name: Müller-Bravo, T. E.
name: Nichol, M.
name: Pellegrino, C.
name: Smartt, S. J.
name: Sollerman, J.
name: Tartaglia, L.
name: Valenti, S.
name: Young, D. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the data and analysis of SN 2018gjx, an unusual low-luminosity transient with three distinct spectroscopic phases. Phase I shows a hot blue spectrum with signatures of ionised circumstellar material (CSM), Phase II has the appearance of broad SN features, consistent with those seen in a Type IIb supernova at maximum light, and Phase III is that of a supernova interacting with helium-rich CSM, similar to a Type Ibn supernova. This event provides an apparently rare opportunity to view the inner workings of an interacting supernova. The observed properties can be explained by the explosion of a star in an aspherical CSM. The initial light is emitted from an extended CSM (~ 4000 Rsun), which ionises the exterior unshocked material. Some days after, the SN photosphere envelops this region, leading to the appearance of a SN IIb. Over time, the photosphere recedes in velocity space, revealing interaction between the supernova ejecta and the CSM that partially obscures the supernova nebular phase. Modelling of the initial spectrum reveals a surface composition consistent with compact H-deficient Wolf-Rayet and LBV stars. Such configurations may not be unusual, with SNe IIb being known to have signs of interaction so at least some SNe IIb and SNe Ibn may be the same phenomena viewed from different angles or, possibly with differing CSM configurations.
description: Accepted for publication in MNRAS
Studies on Ribonuclease E of ESCHERICHIA COLI and its association with the enzyme Polynucleotide phosphorylase
Creators: name: Niguma, Kenneth
Publisher: name: University of British Columbia
Year: 2009

description: Messenger RNAs (mRNA) in Escherichia coli are highly labile molecules due to the combined action of a number of exo- and endoribonucleases that orchestrate their degradation. Two of these enzymes, ribonuclease E (RNase E) and polynucleotide phosphorylase (PNPase) have been implicated as key components of a purported rnRNA degradation complex, otherwise known as the "degradosome" (Py etai, Nature 381, 169-172 (1996)). The purpose of these studies was to identify the site of interaction of PNPase with RNase E (Rne). Antibodies were generated against PNPase, initially against fusion proteins expressing two highly antigenic sites predicted to exist in PNPase, and later against a His(6)-PNPase fusion protein. These antibodies, along with a previously generated anti-RNase E antibody, were used to detect Rne or PNPase at various stages during the partial purification of RNase E. Rne and PNPase were found to remain in a stable complex, in association with other unidentified proteins, after several purification steps, and in particular after anion exchange chromatography. Over-expression and partial purification of Rne deletion mutants revealed that loss of the N-terminal portions of Rne did not prevent the mutant from binding PNPase independently, highlighting the importance of the C-terminal portion of Rne in associating with PNPase. Co-chromatography experiments could not determine whether the N-terminal region of Rne bound directly or indirectly to PNPase. A Far-Western experiment, which separates partially purified proteins in cell lysates and assesses their binding individually, demonstrated that derivatives of Rne retaining the C-terminal acidic tail of Rne were competent to bind PNPase. These experiments illustrating the binding of PNPase to the C-terminus of Rne complement the findings that PNPase binding is lost when the Rne C-terminus is missing (Kido etai, J. Bact, 178, 3917- 3925 (1996)).
Workshop day 4: Story about an attack at Tish-tang-ah-ding
Creators: name: Parker, Verdena
name: Ammon, Danny
name: Begay, Kayla
name: George-Moore, Melodie
name: Jackson, Silis
name: Newbold, Lindsey
name: Spence, Justin
name: Lincoln, Perry
name: Parker, Otis
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio and video files VP-250711-02: Story about an attack that occurred at Tish-tang-ah-ding, in Hupa and English. Recorded at Tish-tang-ah-ding as part of a language workshop in Hoopa Valley. The participants identified here were present at most sessions during the workshop; additional people were also present, some of whom participate in the conversation.
The Differential Effects of Direct and Embedded-Skill Academic Vocabulary Instruction Among Community College Students in Developmental Reading Courses
Creators: name: Lassen, Lindsay
Publisher: name: Maryland Shared Open Access Repository
Year: 2014
Subjects: subject: Academic vocabulary
subject: Community college
subject: Developmental reading
subject: Direct instruction
subject: Embedded-skill instruction
subject: Education -- Research papers (Graduate)

description: The purpose of the study was to determine an effective method of teaching academic vocabulary acquisition skills to community college students enrolled in developmental reading courses. The measurement tool for this study was a vocabulary assessment developed by the researcher. This study involved a pre-experimental design. Subjects (n=8) served as their own controls. Dependent variable data was collected during the spring 2014 semester of the 2013-2014 school year. There was no significant difference in the mean direct instruction score (Mean = 15.25, SD = 1.67) and the mean embedded skill instruction score (Mean = 14.25, SD = 3.45) [t (7) = 1.28, p > .05]. Given the continued disagreement over whether direct or embedded-skill instruction is more appropriate, future research should continue to examine these instructional methods both in isolation and combined.
Letter from James Goldie to J.E. McAllister and R.S. Dormer, February 25, 1930
Creators: name: Goldie, James
Publisher: name: The University of British Columbia
Year: 2017

description: Letter from James Goldie to J.E. McAllister and Robert S. Dormer, dated February 25, 1930, regarding the sales of the Jonathan Account, $300 less than they had figured.
Biological activity of a SiO2-CaO-P2O5 sol-gel glass highlighted by PIXE-RBS methods
Creators: name: Lao, J.
name: Nedelec, J. M.
name: Moretto, P.
name: Jallot, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: It is proposed in this study to observe the influence of P2O5 on the formation of the apatite-like layer in a bioactive glass via a complete PIXE characterization. A glass in the SiO2-CaO-P2O5 ternary system was elaborated by sol-gel processing. Glass samples were soaked in biological fluids for periods up to 10 days. The surface changes were characterized using Particle Induced X-ray Emission (PIXE) associated to Rutherford Backscattering Spectroscopy (RBS), which are efficient methods for multielemental analysis. Elemental maps of major and trace elements were obtained at a micrometer scale and revealed the bone bonding ability of the material. The formation of a calcium phosphate-rich layer containing magnesium occurs after a few days of interaction. We demonstrate that the presence of phosphorus in the material has an impact on the development and the formation rate of the bone-like apatite layer. Indeed, the Ca/P atomic ratio at the glass/biological fluids interface is closer to the nominal value of pure apatite compared to P2O5 free glasses. It would permit, in vivo, an improved chemical bond between the biomaterials and bone.
description: presented at CAARI 2006:19th International Conference on the Application of Accelerators in Research and Industry, Forth Worth, Etats Unis, 20-25 Aug 2006, 11 pp, 4 figures, submitted to NIMB
The Effects of Student Perception of Assigned Texts on Performance-Based Assessments
Creators: name: Lafferty, Elizabeth
Publisher: name: Maryland Shared Open Access Repository
Year: 2014
Subjects: subject: Reading motivation
subject: Interest
subject: Perception of texts
subject: Education -- Research papers (Graduate)

description: The purpose of this study was to determine if interest in assigned texts would affect performance on assessments of selected 8th graders enrolled in a standard Language Arts class. The measurement tool that was used was a survey designed by the researcher to measure interest, and curriculum based assessments aligned with the given texts. This study compared survey data with that of the assessment in order to find a relationship. Achievement gains were of little significance with only one novel having a negative correlation, and no relationship found with the other novel. The results imply that interest is not needed in order for students to perform satisfactory. Research in this area should continue since this would be a major factor in organizing curriculum, and student
learning and achievement.
On the Higher Loop Euler-Heisenberg Trans-Series Structure
Creators: name: Dunne, Gerald V.
name: Harris, Zachary
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show that the one-loop Euler-Heisenberg QED effective Lagrangian in a constant background field acquires a very different non-perturbative trans-series structure at two-loop and higher-loop order in the fine structure constant. Beyond one-loop, virtual particles interact, causing fluctuations about the instantons, whereby the simple poles of the one-loop Borel transform become branch points. We illustrate this in detail at two-loop order using Ritus's seminal result for the renormalized two-loop effective Lagrangian as an exact double-integral representation, and propose a possible new approach to computations at higher loop order. Our methods yield remarkably accurate extrapolations from weak-field to strong-field, and from magnetic to electric background field, at both one-loop and two-loop order, based on surprisingly little perturbative input.
description: 22 pages, 19 figures
The Effects of Staff Development Teachers on Student Learning Outcomes
Creators: name: Kramer, Joseph S.
Publisher: name: Maryland Shared Open Access Repository
Year: 2014
Subjects: subject: Professional development
subject: Student achievement
subject: Job-embedded
subject: Student learning outcome
subject: Education -- Research papers (Graduate)

description: The purpose of this study was to examine the impacts of job-embedded professional development on teacher perception of student achievement. The measurements tools were two surveys. One done prior to the implementation of the Staff Development Teacher Program, and the other during its first year in the Baltimore County Public Schools. This study involved two schools in the county that had high participation rates in the two surveys. Teacher perception of student achievement was slightly higher during the first year of the Staff Development Teacher program. Research in this area should continue to look at a larger sample size and go beyond the first year of the programs implementation.
The Blurred Lines of Intercultural Mediation: Professional Recognition through Formal and Informal Practices in Italy
Creators: name: Cavallari, Claudia
name: Cecchini, Elena
name: Avolio, Gloria Maria
Publisher: name: De Europa
Year: 2024

description: Over the past few decades, Europe has been feeding on a narrative of skepticism and crisis that has not spared the discourse on migration, highlighting states’ fragmentation over the adoption of common migration man-agement policies. Long-lasting difficulties in regional integration have been heightened and efforts to build a sound knowledge-based European society weakened. European states are meeting migration challenges and in so doing are inter alia confronted with the essential role played by intercultural mediation in the interaction between foreigners and host societies. Within such a framework, this article aims at contributing to the debate on the shortcomings of integrated mediation practices across Europe. It thus analyses the theoretical frame-work on mediation, with reference to instruments adopted by both the European Union and the Council of Europe, and accompanies such a review with reflections triggered by an empirical study on mediation conduc-ted at a local level in Italy. The country sets an interesting case study, as it faces well-known migration manage-ment issues that meet Eurosceptic and nationalist tones. The research explores the regional institutional system in place, or the absence thereof, and touches upon how this is perceived and experienced by mediation professionals operating in the asylum and reception field. It provides instances of how, despite some transna-tional coordination, those who operate at the national and local level have heterogeneous backgrounds and refer to sub-state institutional frameworks that are rather far from the idea of a regionally integrated profession-alisation of the role. Drawing thus parallels between the European and the local context, the contribution suggests the rethinking of the professional figure of the mediator and the possibility of grounding the role on common educational and training paths.


Keywords: Council of Europe, European Union, Intercultural Mediation, Cultural Diversity, Migration, European Social Inclusion
description: De Europa, Vol. 6 No. 2 (2023)