cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Modelling the Sgr A* Black Hole Immersed in a Dark Matter Spike
Creators: name: Nampalliwar, Sourabh
name: K., Saurabh
name: Jusufi, Kimet
name: Wu, Qiang
name: Jamil, Mubasher
name: Salucci, Paolo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we investigate the effects of a dark matter (DM) spike on the neighborhood of Sgr A*, the black hole (BH) in the center of the Milky Way galaxy. Our main goal is to investigate whether current and future astronomical observations of Sgr A* could detect the presence of such a DM spike. At first, we construct the spacetime metric around a static and spherically symmetric BH with a DM spike, and later this solution is generalized for a rotating BH using the Newman-Janis-Azreg Aïnou algorithm. For the static BH metric, we use the data of the S2 star orbiting the Sgr A* to determine and analyze the constraints on the two free parameters characterizing the density and the innermost boundary of the DM halo surrounding the BH. Furthermore, by making use of the available observational data for the DM spike density $ρ_\text{sp}$ and the DM spike radius $R_\text{sp}$ in the Milky Way galaxy, we consider a geometrically-thick accretion disk model around the Sgr A* BH and demonstrate that the effect of DM distribution on the shadow radius and the image of the BH is considerably weak for realistic DM densities, becoming significant only when the DM density is of the order $ρ_\text{sp} \sim (10^{-19}-10^{-20})$ g/cm$^3$ near the BH. We further analyze the possibility of observing this effect with radio interferometry, simulating observations with an EHT--like array, and find that it is unlikely to be detectable in the near future.
description: Minor updates; accepted for publication in ApJ
Capacity Building in Cultural and Traditional Craft Enterprises for Ecotourism Development in the Sekyere Kumawu District of Ghana
Creators: name: Adom, Dickson
name: Nyadu-Addo, Ralph
name: Kquofi, Steve
Publisher: name: Faculty of Fine and Applied Arts Chulalongkorn University
Year: 2021
Subjects: Capacity Building
Ecotourism
Traditional Craft Enterprises
Cultural Heritage
Local Community Participation
Sustainable Tourism

description: Journal of Urban Culture Research, 23, -, 44-78
Observability of inflated companion stars after supernovae in massive binaries
Creators: name: Ogata, Misa
name: Hirai, Ryosuke
name: Hijikawa, Kotaro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We carry out a systematic study of the response of companion stars in massive binaries after being impacted by supernova ejecta. A total of 720 1D stellar evolution calculations are performed to follow the inflation and contraction of the star in response to the energy injection and how it depends on various parameters. We find that the maximum luminosity achieved during the inflated phase is only dependent on the stellar mass and we derive an analytic formula to describe the relation. There is also a tight correlation between the duration of expansion and the intersected energy. These correlations will be useful to constrain pre-supernova binary parameters from future detections of inflated companions. We also discuss the possible outcomes of the binary system when the companion inflation is taken into account. Based on simple binary population synthesis, we estimate that $\sim$1-3% of stripped-envelope supernovae may have observable inflated companions. Finally, we apply our models to the observed companion of SN2006jc and place strong constraints on the possible pre-supernova binary parameters.
description: 15 pages, 15 figures, Accepted for publication in MNRAS
Iterative Solutions for Low Lying Excited States of a Class of Schroedinger Equation
Creators: name: Friedberg, R.
name: Lee, T. D.
name: Zhao, W. Q.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The convergent iterative procedure for solving the groundstate Schroedinger equation is extended to derive the excitation energy and the wave function of the low-lying excited states. The method is applied to the one-dimensional quartic potential problem. The results show that the iterative solution converges rapidly when the coupling $g$ is not too small.
description: 14 pages, 4 figures
Grazia Deledda, Annalena Bilsini, edizione critica a cura di Dino Manca, Sassari, EDES, 2018
Creators: name: Mastropaolo, Maria Rita
Publisher: name: Prassi Ecdotiche della Modernità Letteraria
Year: 2019

description: Grazia Deledda, Annalena Bilsini, edizione critica a cura di Dino Manca, collana “Filologia della letteratura degli italiani”, Edizioni critiche/6, Strumenti/7, Sassari, EDES, 2018. https://sites.unimi.it/oec/schede.php
description: Prassi Ecdotiche della Modernità Letteraria, N. 4/I (2019)
A New Microscopic Look into Pressure Fields and Local Buoyancy
Creators: name: João, Simão M.
name: Pires, J. P. Santos
name: Lopes, J. M. Viana Parente
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The concept of local pressure is pivotal to describe many important physical phenomena, such as buoyancy or atmospheric phenomena, which always require the consideration of space-varying pressure fields. These fields have precise definitions within the phenomenology of hydro-thermodynamics, but a simple and pedagogical microscopic description based on Statistical Mechanical is still lacking in present literature. In this paper, we propose a new microscopic definition of the local pressure field inside a classical fluid, relying on a local barometer potential that is built into the many-particle Hamiltonian. Such a setup allows the pressure to be locally defined, at an arbitrary point inside the fluid, simply by doing a standard ensemble average of the radial force exerted by the barometer potential on the gas' particles. This setup is further used to give a microscopic derivation of the generalized Archimedes's buoyancy principle, in the presence of an arbitrary external field. As instructive examples, buoyancy force fields are calculated for ideal fluids in the presence of: i) a uniform force field, ii) a spherically symmetric harmonic confinement field, and iii) a centrifugal rotating frame.
description: Pedagogical Paper with 9 pages, 3 figures. Submitted to the American Journal of Physics
Mathematical Morphology: Star/Galaxy Differentiation & Galaxy Morphology Classification
Creators: name: Moore, Jason A.
name: Pimbblet, Kevin A.
name: Drinkwater, Michael J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an application of Mathematical Morphology (MM) for the classification of astronomical objects, both for star/galaxy differentiation and galaxy morphology classification. We demonstrate that, for CCD images, 99.3 +/- 3.8 % of galaxies can be separated from stars using MM, with 19.4 +/- 7.9 % of the stars being misclassified. We demonstrate that, for photographic plate images, the number of galaxies correctly separated from the stars can be increased using our MM diffraction spike tool, which allows 51.0 +/- 6.0 % of the high-brightness galaxies that are inseparable in current techniques to be correctly classified, with only 1.4 +/- 0.5 % of the high-brightness stars contaminating the population. We demonstrate that elliptical (E) and late-type spiral (Sc-Sd) galaxies can be classified using MM at an accuracy of 91.4 +/- 7.8 %. It is a method involving less `free parameters' than current techniques, especially automated machine learning algorithms. The limitation of MM galaxy morphology based on seeing and distance is also presented. We examine various star/galaxy differentiation and galaxy morhpology classification techniques commonly used today, and show that the above MM techniques compare very favourably.
description: 13 pages, 11 figures, accepted for publication in PASA
Observational test for $f(Q)$ gravity with weak gravitational lensing
Creators: name: Wang, Qingqing
name: Ren, Xin
name: Cai, Yi-Fu
name: Luo, Wentao
name: Saridakis, Emmanuel N.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this article we confront a class of $f(Q)$ gravity models with observational data of galaxy-galaxy lensing. Specifically, we consider the $f(Q)$ gravity models containing a small quadratic correction when compared with General Relativity (GR), and quantify this correction by a model parameter $α$. To derive the observational constraints, we start by extracting the spherically symmetric solutions which correspond to the deviations from the Schwarzschild solution that depends on the model parameter in a two-fold way, i.e., a renormalized mass and a new term proportional to $r^{-2}$. Then, we calculate the effective lensing potential, the deflection angle, the shear component, and the effective Excess Surface Density (ESD) profile. After that, we employ the group catalog and shape catalog from the SDSS DR7 for the lens and source samples respectively. Moreover, we handle the off-center radius as a free parameter and constrain it using the MCMC. Concerning the deviation parameter from GR we derive $α=1.202^{+0.277}_{-0.179}\times 10^{-6} {\rm Mpc}^{-2}$ at 1 $σ$ confidence level, and then compare the fitting efficiency with the standard $Λ$CDM paradigm by applying the AIC and BIC information criteria. Our results indicate that the $f(Q)$ corrections alongside off-center effects yield a scenario that is slightly favored.
description: 12pages,2figures
Head nurse leadership : perceptions of leaders
Creators: name: Fraser, Katherine Theresa Mulligan
Publisher: name: University of British Columbia
Year: 2008

description: This descriptive study was designed to explore the perceptions of leadership among acute care hospital head nurses by using an established leadership framework called the Transformational Leadership Model (Bass, 1985b) to identify and measure leadership styles and outcome factors. Specifically, the study investigated head nurses' perceptions of their leadership from transformational and transactional perspectives, the relationships among leadership styles and between leadership styles and outcome factors, and the relationship between selected demographic and professional characteristics of the head nurse and level of transformational leadership. The study was conducted at four acute care hospitals in the Lower Mainland of British Columbia. A purposive sample of 51 head nurses completed a Demographic Information Form and a Multifactor Leadership Questionnaire. Data were analyzed and compared to normative data using descriptive statistics. Pearsonâs correlation coefficient and the chi-square test of association were also used to analyze the sample data. Generally, head nurses perceived their leadership as highly transformational and to a lesser degree, transactional. Significant relationships were identified among the leadership styles and between the leadership styles and outcome factors. Compared to other managers, first-line nurse managers were more transformational and employed more Contingent Reward in transactional leadership, and perceived that Satisfaction and Effectiveness levels were higher owing to their leadership. The evidence did not support an association between head nurse characteristics and transformational leadership. Implications for nursing administration, nursing education, and nursing research are presented.
Analyse von Wellenpaketen in der periodischen nichtlinearen Schrödingergleichung durch Approximation mittels Coupled Mode Gleichungen
Creators: name: Wahlers, Lisa
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Wellenpakete
subject: Dispersive Wellen
subject: Couples mode equations
subject: Solitärwellen
subject: 510

description: Der Kern dieser Arbeit ist die Untersuchung von Wellenpaketen in periodischen Strukturen für unterschiedliche Dimensionen. Als asymptotische Skalierung betrachten wir Wellenpakete aus mehreren tragenden Blochwellen mit unterschiedlichen Gruppengeschwindigkeiten. Dadurch leiten wir ein Amplitudensystem erster Ordnung her, die Coupled Mode Gleichungen. Im eindimensionalen Fall haben die Coupled Mode Gleichungen eine Familie von lokalisierten Solitärwellen, welche durch die Geschwindigkeit parametrisiert sind. Weil diese Solitärwellen in der spektralen Lücke der Coupled Mode Gleichungen existieren, werden sie Gap Solitone genannt. Wir beschäftigen uns mit der Frage, ob für die Coupled Mode Gleichungen in höheren Dimensionen ebenfalls eine Familie von beweglichen Gap Solitonen existiert. Für den zweidimensionalen Fall und einen Ansatz aus vier Moden finden wir numerisch stehende Solitärwellen und beweisen anschließend die Existenz von lokalisierten Wellen für die Coupled Mode Gleichungen. Schließlich führen wir eine rigorose Rechtfertigung der Coupled Mode Gleichungen als asymptotisches Modell für die periodische nichtlineare Schrödingergleichung für den allgemeinen Fall von d Dimensionen durch.
Lexical and grammatical elicitation: Verbal and nominal morphology
Creators: name: Kipkoech, Linus
name: Bossi, Madeline
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: sgc

description: Two .wav files (I with lavalier mic, M with in-recorder mic). See Notebook 1 (file bundle 2019-26.001). Beginning elicitation of nouns and verbal and nominal morphology.
Properties of a simple bilinear stochastic model: estimation and predictability
Creators: name: Sornette, D.
name: Pisarenko, V. F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We analyze the properties of arguably the simplest bilinear stochastic multiplicative process, proposed as a model of financial returns and of other complex systems combining both nonlinearity and multiplicative noise. By construction, it has no linear predictability (zero two-point correlation) but a certain nonlinear predictability (non-zero three-point correlation). It can thus be considered as a paradigm for testing the existence of a possible nonlinear predictbility in a given time series. We present a rather exhaustive study of the process, including its ability to produce fat-tailed distribution from Gaussian innovations, the unstable characteristics of the inversion of the key nonlinear parameters and of the two initial conditions necessary for the implementation of a prediction scheme and an analysis of the associated super-exponential sensitivity of the inversion of the innovations in the presence of a large impluse. Our study emphasizes the conditions under which a degree of predictability can be achieved and describes a number of different attempts, which overall illuminates the properties of the process. In conclusion, notwithstanding its remarkable simplicity, the bilinear stochastic process exhibits remarkably rich and complex behavior, which makes it a serious candidate for the modeling of financial times series and of other complex systems.
description: 35 pages, 5 figures, 8 tables
Intelligenza culturale e bilinguismo precoce
Creators: name: Proietti, Anna Lia
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2013

description:

Cultural Intelligence is defined as the capacity to interact in an efficient and positive way in multicultural environments. Cultural Intelligence has been studied also in relation with adult bi/multilingualism. Studies which focus on the correlation between Cultural Intelligence and early bilingualism are still lacking. The present study, in spite of having been conducted on a restricted number of subjects, may enlighten the fact that knowing a foreign language even at a beginner stage may empowers the child in regards to Cultural Intelligence and in a global world as we are living in, it could be a valuable input to reflect on in an attempt to create new generations that are adequately intelligent to interact in an increasingly multicultural environment.

description: EL.LE
Benin Kingdom's Art Traditions and Culture
Creators: name: Uzzi, Festus Osarumwense
name: Siyanbola, Afeez Babatunde
name: Omoruan, Daniel
Publisher: name: Faculty of Fine and Applied Arts Chulalongkorn University
Year: 2021
Subjects: Benin Kingdom History
Benin Art
Benin Culture
Ancient Costume
Bronze Casting
Carving
Pottery
Nigeria

description: Journal of Urban Culture Research, 23, -, 94-106
Il negazionismo linguistico e l’educazione plurilingue
Creators: name: Capua, Clelia
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2013

description:

The language ideology with concepts like monolingualism, uniformity, linguistic negationism is often recognizable in political and governance instruments. The intent of this paper is to trace the modern roots of those linguistic preconceptions that have interfered and continue to interfere in the study of multilingualism and its full social realization. Preconceptions still resistant to this day even to the obvious. As we do not have a historiographical intent, nor an encyclopedic one, it was decided to use the observation and comparison between two contemporary language policies yet geographically distant as the stimulus of our reflection: the NDEA (1958) of the United States of America and the European Cultural Convention (1954). The goal is to understand the cultural roots of the widespread monocultural ideology.

description: EL.LE
Quantum turbulence, superfluidity, non-Markovian dynamics, and wave function thermalization
Creators: name: Bulgac, A.
name: Kafker, M.
name: Abdurrahman, I.
name: Wlazlowski, G.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: While quantum turbulence has been addressed both experimentally (predominantly for superfluid $^4$He and $^3$He) and theoretically, the dynamics of various ensembles of quantized vortices was followed in time only until the vortices decay into phonons. How this ``thermalization'' is achieved is still an unaddressed and thus an unelucidated question. The Unitary Fermi Gas (UFG) is a unique quantum system, which has no classical counterpart and of relevance to neutron stars, cold atoms, condensed matter and nuclear many-body systems. The non-Markovian evolution of an isolated UFG is put in evidence and its entire non-equilibrium evolution can be studied theoretically within a unified theoretical framework. The initial lattice of quantum vortices and anti-vortices evolves through a couple of vortex tangles and excitation of Kelvin waves, where vortices cross and reconnect, until very slowly thermalization sets in.
description: 8 pages, 6 figures, online supplemental material, published version
Riflessioni sul raggio d’azione della glottodidattica speciale
Creators: name: Daloiso, Michele
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2013

description:

The present essay focuses on the use of the term ‘Special Educational Needs’ (SEN) in language teaching research. In the first part some issues about the definition of SEN are discussed, particularly the fact that this ‘umbrella-term’ seems to be applied to a (too) wide range of students with different difficulties and conditions. The author then discusses a number of theoretical issues arising from the use of the concept of SEN in language teaching research. In fact, while pedagogy is entitled to elaborate methodologies to answer ‘educational needs’, language teaching research has a more specific scope, namely ‘language (and (inter)cultural) needs’. Thus, research on the teaching of languages to SEN students is useful, and even necessary, only if they have a specific language need. In the light of these considerations the second part of the essay introduces the notion of ‘Specific Language Needs’. A classification of this category of students is proposed which integrates current knowledge in clinical research within the model of ‘communicative competence’.

description: EL.LE
Motivare la classe di lingue
Creators: name: Lombardi, Ivan
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2013

description:

To solve an issue that lately many a language class face – namely, that of student motivation –, research has been focusing on a tool not often associated to school: video games. These seem to be able to engage their players in a unique and unprecedented way, and with a degree of success yet unknown to language teaching and learning settings in schools. This paper analyses video games by transcending the tool itself and breaking down its essence in the form of its constituent game elements – i.e. the components of games that game designers blend with craft into thoroughly engaging gaming experiences. By adopting the perspective of the psycholinguistics of motivation, it is shown how to apply the some of these game elements to the language class, using two gamified experiences in (language) teaching as a foundation.

description: EL.LE
High-pressure structural, elastic and electronic properties of the scintillator host material, KMgF_3
Creators: name: Vaitheeswaran, G.
name: Kanchana, V.
name: Kumar, R. S.
name: Cornelius, A. L.
name: Nicol, M. F.
name: Svane, A.
name: Delin, A.
name: Johansson, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The high-pressure structural behaviour of the fluoroperovskite KMgF_3 is investigated by theory and experiment. Density functional calculations were performed within the local density approximation and the generalized gradient approximation for exchange and correlation effects, as implemented within the full-potential linear muffin-tin orbital method. In situ high-pressure powder x-ray diffraction experiments were performed up to a maximum pressure of 40 GPa using synchrotron radiation. We find that the cubic Pm\bar{3}m crystal symmetry persists throughout the pressure range studied. The calculated ground state properties -- the equilibrium lattice constant, bulk modulus and elastic constants -- are in good agreement with experimental results. By analyzing the ratio between the bulk and shear modulii, we conclude that KMgF_3 is brittle in nature. Under ambient conditions, KMgF_3 is found to be an indirect gap insulator with the gap increasing under pressure.
description: 4 figures
Do Not Watch This Film di Amnesty International
Creators: name: Sannazzaro, Francesca
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2013

description:

This essay has a specific purpose: to prove the functionality of the web in order to find authentic, multimedia and hypermedia materials to teach foreign languages. To this purpose, a detailed analysis of the video Do Not Watch This Filmby Amnesty International will be reported and also of the related website www.ifoundtheletter.org. Its strategic and persuasive use of negation is examined, as well as the multiple current issues emerging from these materials and the potential educational activities to be carried out in a class.

description: EL.LE
The Museum that Leaps over The Physical Wall: Museum Practices in Japan Under the COVID-19 Pandemic
Creators: name: Pan, Mengfei
Publisher: name: Faculty of Fine and Applied Arts Chulalongkorn University
Year: 2021
Subjects: Museum
COVID-19
Crowdfunding
Digital Museum
Museum Engagement
Japan
Virtual Exhibition

description: Journal of Urban Culture Research, 23, -, 107-122
Impact of Local Energy Markets on the Distribution Systems: A Comprehensive Review
Creators: name: Dudjak, Viktorija
name: Neves, Diana
name: Alskaif, Tarek
name: Khadem, Shafi
name: Pena-Bello, Alejandro
name: Saggese, Pietro
name: Bowler, Benjamin
name: Andoni, Merlinda
name: Bertolini, Marina
name: Zhou, Yue
name: Lormeteau, Blanche
name: Mustafa, Mustafa A.
name: Wang, Yingjie
name: Francis, Christina
name: Zobiri, Fairouz
name: Parra, David
name: Papaemmanouil, Antonios
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In recent years extensive research has been conducted on the development of different models that enable energy trading between prosumers and consumers due to expected high integration of distributed energy resources. Some of the most researched mechanisms include Peer-to-Peer energy trading, Community Self-Consumption and Transactive Energy Models. Here, we present an exhaustive review of existing research around Local Energy Market integration into distribution systems, in particular benefits and challenges that the power grid can expect from integrating these models. We also present a detailed overview of methods that are used to integrate physical network constraints into the market mechanisms, their advantages, drawbacks, and scaling potential. We find that financial energy transactions do not directly reflect the physical energy flows imposed by the constraints of the installed electrical infrastructure. Therefore, ensuring the stable and reliable delivery of electricity, it is vital to understand the impact of these transactions on the grid infrastructure, e.g., impacts on the control, operation, and planning of electricity distribution systems.
description: 27 pages, 4 tables, 4 figures
The boundary manifold of a complex line arrangement
Creators: name: Cohen, Daniel C
name: Suciu, Alexander I
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 32S22, 57M27

description: We study the topology of the boundary manifold of a line arrangement in CP^2, with emphasis on the fundamental group G and associated invariants. We determine the Alexander polynomial Delta(G), and more generally, the twisted Alexander polynomial associated to the abelianization of G and an arbitrary complex representation. We give an explicit description of the unit ball in the Alexander norm, and use it to analyze certain Bieri-Neumann-Strebel invariants of G. From the Alexander polynomial, we also obtain a complete description of the first characteristic variety of G. Comparing this with the corresponding resonance variety of the cohomology ring of G enables us to characterize those arrangements for which the boundary manifold is formal.
description: This is the version published by Geometry & Topology Monographs on 22 February 2008
Revealing the Paradox of a Heritage City Through Community Perception Approach: A Case Study of Parakan, Temanggung, Central Java, Indonesia
Creators: name: Purwantiasning, Ari Widyati
Publisher: name: Faculty of Fine and Applied Arts Chulalongkorn University
Year: 2021
Subjects: Community Perception
Heritage City
Oral Tradition
Paradox
Parakan
Indonesia

description: Journal of Urban Culture Research, 23, -, 123-135
Imparare a leggere e scrivere in età adulta
Creators: name: Bertolotto, Giulia
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2013

description:

The topic of illiteracy, in its various meanings and cultural conceptions, has become matter of debate among teachers of Italian as a second language (L2) as a result of migration flows towards Italy of unschooled or poorly schooled citizens. Learn how to read and how to write in adulthood and in a language that is not their own is a formidable challenge, even for the teachers who specialize in facilitating this process and transmitting even the rudiments of the spoken language. The following commentary, focusing on the case of Moroccan women in literacy courses in Turin, aims to propose some theoretical and experiential insights aimed at an interdisciplinary reflection on the subject.

description: EL.LE
Lexical and grammatical elicitation: Verbal and nominal morphology
Creators: name: Koech, Nicholas Kipchumba
name: Bossi, Madeline
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: tuy

description: Two .wav files (I with lavalier mic, M with in-recorder mic). See Notebook 1 (file bundle 2019-26.001). Beginning elicitation of nouns and verbal and nominal morphology.
Quantum Transport Theory of Strongly Correlated Matter
Creators: name: Auerbach, Assa
name: Bhattacharyya, Sauri
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This report reviews recent progress in computing Kubo formulas for general interacting Hamiltonians. The aim is to calculate electric and thermal magneto-conductivities in strong scattering regimes where Boltzmann equation and Hall conductivity proxies exceed their validity. Three primary approaches are explained.
 1. Degeneracy-projected polarization formulas for Hall-type conductivities, which substantially reduce the number of calculated current matrix elements. These expressions generalize the Berry curvature integral formulas to imperfect lattices. 2. Continued fraction representation of dynamical longitudinal conductivities. The calculations produce a set of thermodynamic averages, which can be controllably extrapolated using their mathematical relations to low and high frequency conductivity asymptotics. 3. Hall-type coefficients summation formulas, which are constructed from thermodynamic averages.
 The thermodynamic formulas are derived in the operator Hilbert space formalism, which avoids the opacity and high computational cost of the Hamiltonian eigenspectrum. The coefficients can be obtained by well established imaginary-time Monte Carlo sampling, high temperature expansion, traces of operator products, and variational wavefunctions at low temperatures. We demonstrate the power of approaches 1--3 by their application to well known models of lattice electrons and bosons. The calculations clarify the far-reaching influence of strong local interactions on the metallic transport near Mott insulators. Future directions for these approaches are discussed.
description: 81 pages, 32 figures, 144 references
Sikh Music in Bangkok: The Sangeetacharya Band
Creators: name: Komkam, Pattara
Publisher: name: Faculty of Fine and Applied Arts Chulalongkorn University
Year: 2021
Subjects: Sikh Music
Sangeetacharya Musician
Bangkok Music
Musical Hymns
Urban Music Culture
Religious Performance
Thailand

description: Journal of Urban Culture Research, 23, -, 136-148
Search for dark matter production in association with the Z$^{\prime}$ boson at the LHC in pp collisions at $\sqrt{s}$ = 8 TeV using Monte Carlo simulations
Creators: name: Elgammal, S.
name: Louka, M. A.
name: Ellithi, A. Y.
name: Hussein, M. T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This analysis presents the possibility for the search for Dark Matter (DM) particles using events with a Z$^{\prime}$ heavy gauge boson and a large missing transverse momentum at the Large Hadron Collider (LHC). We consider the muonic decay of Z$^{\prime}$. The analyzed Monte Carlo samples were the Open simulated files produced by the CMS collaboration for proton-proton collisions correspond to an integrated luminosity of the LHC run-I with 19.7 fb$^{-1}$ at $\sqrt{s} = $ 8 TeV. Two scenarios, one simplified benchmark scenario so called Dark Higgs and the effective field theory (EFT) formalism, were used for interpretations. Limits are set on both Z$^{\prime}$, dark matter masses and the cutoff scale of the EFT.
description: 11 pages, 9 figures
Conceptual Fabric-Calabash Art Installation on the Beauty and Struggles of African Women
Creators: name: Bekoe, Abigail Amoakowaa
name: Howard, Ebenezer Kofi
name: Asinyo, Benjamin Kwablah
name: Seidu, Raphael Kanyire
Publisher: name: Faculty of Fine and Applied Arts Chulalongkorn University
Year: 2021
Subjects: Calabash
Fabric
Beauty
Struggles
African Women
Art
Africa

description: Journal of Urban Culture Research, 23, -, 149-167
The effect of forage seeding on vegetation dynamics and the early growth and survival of lodgepole pine (Pinus contorta var. latifolia Engelm.) on a forest clear-cut
Creators: name: Powell, George Wilfred
Publisher: name: University of British Columbia
Year: 2008

description: Field trials of orchardgrass (Dactylis glomerata L.),smooth bromegrass (Bromus inermis Leys.), alsike clover (Trifolium hybridum L.), and a mixture by weight of 40%orchardgrass, 40% alsike clover, and 20% white clover (Trifolium repens L.), with five seeding rates by weight (0.5, 1.5, 3.0, 6.0 and 12.0 kg/ha), were conducted on a forest clear-cut in the Very Dry, Cool Montane Spruce biogeoclimatic subzone in the southern interior of British Columbia. The treatments were monitored for the first two growing seasons for their influence on the vegetation dynamics, and the resultant interactions of the vegetation on the growth and survival of planted 1+0 lodgepole pine (Pinus contorta var. latifolia Engelm.) seedlings. Forage seeding had no effect on lodgepole pine survival. There was no significant difference in the height, basal diameter or stem volume growth of lodgepole pine in 1990 among different species of forage or between domestic forages and native vegetation. In the second year of the study (1991), decreases in the increment in lodgepole pine basal diameter were weakly associated with increasing seeding rate; however, lodgepole pine height, and stem volume remained unaffected by species or seeding rate of forages. There was no difference in the effect of different forage species or native vegetation on lodgepole pine growth in 1991. Stem volumes were lower in 1990 and 1991 on conifers with surrounding vegetation compared to the control groups with competing vegetation removed. Unit needle mass decreased with the absence of vegetation in 1991. There was a positive correlation between cover of orchardgrass and overwinter rodent damage of the lodgepole pine seedlings following the first growing season; however, lodgepole pine survival was independent of rodent damage. Density, cover, and height of vegetation were positively correlated with pure live seeds sown per ha, although this effect was delayed to the second growing season for height, and cover. Two-dimensional partitioning of the cover indicated that the seeded fraction of the total vegetative response was influenced by seeding rate and species of forage sown in both growing seasons. The variability introduced by native vegetation masked the treatment effect in the first year, such that overall there was no treatment effect for total vegetative cover. Initial germination of forages was not linearly related to the initial cover of soil, litter or wood on the plots; however, development of the vegetation, in particular the clovers, was often correlated with the initial cover of these non-floristic cover components.
Effect of geometric and electronic structures on the finite temperature behavior of Na$_{58}$, Na$_{57}$, and Na$_{55}$ clusters
Creators: name: Lee, Mal-Soon
name: Kanhere, D. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: An analysis of the evolutionary trends in the ground state geometries of Na$_{55}$ to Na$_{62}$ reveals Na$_{58}$, an electronic closed--shell system, shows namely an electronically driven spherical shape leading to a disordered but compact structure. This structural change induces a strong {\it connectivity} of short bonds among the surface atoms as well as between core and surface atoms with inhomogeneous strength in the ground state geometry, which affects its finite--temperature behavior. By employing {\it ab initio} density--functional molecular dynamics, we show that this leads to two distinct features in specific heat curve compared to that of Na$_{55}$: (1) The peak is shifted by about 100 K higher in temperature. (2) The transition region becomes much broader than Na$_{55}$. The inhomogeneous distribution of bond strengths results in a broad melting transition and the strongly connected network of short bonds leads to the highest melting temperature of 375 K reported among the sodium clusters. Na$_{57}$, which has one electron less than Na$_{58}$, also possesses stronger short--bond network compared with Na$_{55}$, resulting in higher melting temperature (350 K) than observed in Na$_{55}$. Thus, we conclude that when a cluster has nearly closed shell structure not only geometrically but also electronically, it show a high melting temperature. Our calculations clearly bring out the size--sensitive nature of the specific heat curve in sodium clusters.
description: 7 pages, 11 figures
Extracting Flavor from Quiver Gauge Theories
Creators: name: Volansky, Tomer
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a large class of models where an SU(5) gauge symmetry and a Froggatt-Nielsen (FN) Abelian flavor symmetry arise from a quiver gauge theory. Such quiver models are very restrictive and therefore have strong predictive power. In particular, under mild assumptions neutrino mass anarchy is predicted.
description: 4 pages, 1 figure, to appear in Proceedings of SUSY06, the 14th International Conference on Supersymmetry and the Unification of Fundamental Interactions, UC Irvine, California, 12-17 June 2006
On Divergence-Power Inequalities
Creators: name: Binia, Jacob
Publisher: name: arXiv
Year: 2006
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Expressions for (EPI Shannon type) Divergence-Power Inequalities (DPI) in two cases (time-discrete and band-limited time-continuous) of stationary random processes are given. The new expressions connect the divergence rate of the sum of independent processes, the individual divergence rate of each process, and their power spectral densities. All divergences are between a process and a Gaussian process with same second order statistics, and are assumed to be finite. A new proof of the Shannon entropy-power inequality EPI, based on the relationship between divergence and causal minimum mean-square error (CMMSE) in Gaussian channels with large signal-to-noise ratio, is also shown.
description: Submitted to IEEE Transactions on Information Theory
Impact of the Epoch of Reionization sources on the 21-cm bispectrum
Creators: name: Noble, Leon
name: Kamran, Mohd
name: Majumdar, Suman
name: Murmu, Chandra Shekhar
name: Ghara, Raghunath
name: Mellema, Garrelt
name: Iliev, Ilian T.
name: Pritchard, Jonathan R.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The morphology of the 21-cm signal emitted by the neutral hydrogen present in the intergalactic medium (IGM) during the Epoch of Reionization (EoR) depends both on the properties of the sources of ionizing radiation and on the underlying physical processes within the IGM. Variation in the morphology of the IGM 21-cm signal due to the different sources of the EoR is expected to have a significant impact on the 21-cm bispectrum, which is one of the crucial observable statistics that can evaluate the non-Gaussianity present in the signal and which can be estimated from radio interferometric observations of the EoR. Here we present the 21-cm bispectrum for different reionization scenarios assuming different simulated models for the sources of reionization. We also demonstrate how well the 21-cm bispectrum can distinguish between different IGM 21-cm signal morphologies, arising due to the differences in the reionization scenarios, which will help us shed light on the nature of the sources of ionizing photons. Our estimated large-scale bispectrum for all unique $k$-triangle shapes shows a significant difference in the magnitude and sign across different reionization scenarios. Additionally, our focused analysis of bispectrum for a few specific $k$-triangle shapes (e.g. squeezed-limit, linear, and shapes in the vicinity of the squeezed-limit) shows that the large scale 21-cm bispectrum can distinguish between reionization scenarios that show inside-out, outside-in and a combination of inside-out and outside-in morphologies. These results highlight the potential of using the 21-cm bispectrum for constraining different reionization scenarios.
description: 30 pages, 7 figures, comments are welcome, accepted in JCAP
Time scales in LISA
Creators: name: Pireaux, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The LISA mission is a space interferometer aiming at the detection of gravitational waves in the [$10^{-4}$,$10^{-1}$] Hz frequency band. In order to reach the gravitational wave detection level, a Time Delay Interferometry (TDI) method must be applied to get rid of (most of) the laser frequency noise and optical bench noise. This TDI analysis is carried out in terms of the coordinate time corresponding to the Barycentric Coordinate Reference System (BCRS), TCB, whereas the data at each of the three LISA stations is recorded in terms of each station proper time. We provide here the required proper time versus BCRS time transformation. We show that the difference in rate of station proper time versus TCB is of the order of $5 10^{-8}$. The difference between station proper times and TCB exhibits an oscillatory trend with a maximum amplitude of about $10^{-3}$ s.
description: 14 pages, 5 eps figures, 0 table, accepted in Classical and Quantum Gravity
Additional file 14: of RNA-Seq and iTRAQ reveal multiple pathways involved in storage root formation and development in sweet potato (Ipomoea batatas L.)
Creators: name: Dong, Tingting
name: Zhu, Mingku
name: Yu, Jiawen
name: Han, Rongpeng
name: Tang, Cheng
name: Xu, Tao
name: Liu, Jingran
name: Li, Zongyun
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology

description: Figure S7. Multiple alignment of BEL1 and BEL5 proteins. (PDF 198 kb)
A fitting algorithm for optimizing ion implantation energies and fluences
Creators: name: Kehayias, Pauli
name: Henshaw, Jacob
name: Ziabari, Maziar Saleh
name: Titze, Michael
name: Bielejec, Edward
name: Lilly, Michael P.
name: Mounce, Andrew M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We describe a method to automatically generate an ion implantation recipe, a set of energies and fluences, to produce a desired defect density profile in a solid using the fewest required energies. We simulate defect density profiles for a range of ion energies, fit them with an appropriate function, and interpolate to yield defect density profiles at arbitrary ion energies. Given $N$ energies, we then optimize a set of $N$ energy-fluence pairs to match a given target defect density profile. Finally, we find the minimum $N$ such that the error between the target defect density profile and the defect density profile generated by the $N$ energy-fluence pairs is less than a given threshold. Inspired by quantum sensing applications with nitrogen-vacancy centers in diamond, we apply our technique to calculate optimal ion implantation recipes to create uniform-density 1 $μ$m surface layers of $^{15}$N or vacancies (using $^4$He).
description: 5 pages, 3 figures
Hegemonizing the Ajat Indu in Sarawak, Malaysia
Creators: name: Jamu, Andrew Igai
name: Thiagarajan, Premalatha
Publisher: name: Faculty of Fine and Applied Arts Chulalongkorn University
Year: 2021
Subjects: Ajat Indu
Dance
Hegemony
Iban
Sarawak
Malaysia

description: Journal of Urban Culture Research, 23, -, 168-185
Applying Machine Learning in Self-Adaptive Systems: A Systematic Literature Review
Creators: name: Gheibi, Omid
name: Weyns, Danny
name: Quin, Federico
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (cs.LG)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Recently, we witness a rapid increase in the use of machine learning in self-adaptive systems. Machine learning has been used for a variety of reasons, ranging from learning a model of the environment of a system during operation to filtering large sets of possible configurations before analysing them. While a body of work on the use of machine learning in self-adaptive systems exists, there is currently no systematic overview of this area. Such overview is important for researchers to understand the state of the art and direct future research efforts. This paper reports the results of a systematic literature review that aims at providing such an overview. We focus on self-adaptive systems that are based on a traditional Monitor-Analyze-Plan-Execute feedback loop (MAPE). The research questions are centred on the problems that motivate the use of machine learning in self-adaptive systems, the key engineering aspects of learning in self-adaptation, and open challenges. The search resulted in 6709 papers, of which 109 were retained for data collection. Analysis of the collected data shows that machine learning is mostly used for updating adaptation rules and policies to improve system qualities, and managing resources to better balance qualities and resources. These problems are primarily solved using supervised and interactive learning with classification, regression and reinforcement learning as the dominant methods. Surprisingly, unsupervised learning that naturally fits automation is only applied in a small number of studies. Key open challenges in this area include the performance of learning, managing the effects of learning, and dealing with more complex types of goals. From the insights derived from this systematic literature review we outline an initial design process for applying machine learning in self-adaptive systems that are based on MAPE feedback loops.
Diffraction in QCD
Creators: name: Kopeliovich, B. Z.
name: Potashnikova, I. K.
name: Schmidt, Ivan
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This lecture presents a short review of the main features of diffractive processes and QCD inspired models. It includes the following topics: (1) Quantum mechanics of diffraction: general properties; (2) Color dipole description of diffraction; (3) Color transparency; (4) Soft diffraction in hard reactions: DIS, Drell-Yan, Higgs production; (5) Why Pomerons interact weakly; (6) Small gluonic spots in the proton; (7) Diffraction near the unitarity bound: the Goulianos-Schlein "puzzle"; (8) Diffraction on nuclei: diffractive Color Glass; (9) CGC and gluon shadowing.
description: Based on the lecture given by B.K. at I LAWHEP, Porto Alegre, Brazil, December 1-3, 2005
Rain Culture: Rain Induced Behavioral Changes of People Moving on the Streets in Central Ho Chi Minh City
Creators: name: Luu, Tuan Anh
Publisher: name: Faculty of Fine and Applied Arts Chulalongkorn University
Year: 2021
Subjects: Urban Culture
Behavioral Culture
Vietnamese Culture
Rain Culture
Vietnam
Ho Chi Minh City
Weather

description: Journal of Urban Culture Research, 23, -, 186-203