cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
[Small-group elicitation sessions]
Creators: name: Mukacha, Andrew
name: Bothfeld, Sarah
name: Granados, Alejandro
name: Hyman, Larry M.
name: Lei, Justin
name: Minas, Emil
name: Morales, Mark
name: Schultz, Donald
name: Spingeld, Jeffrey
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: Lulamogi language

description: Grammatical elicitation
SoMin.ai: Personality-Driven Content Generation Platform
Creators: name: Farseev, Aleksandr
name: Yang, Qi
name: Filchenkov, Andrey
name: Lepikhin, Kirill
name: Chu-Farseeva, Yu-Yi
name: Loo, Daron-Benjamin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Multimedia (cs.MM)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this technical demonstration, we showcase the World's first personality-driven marketing content generation platform, called SoMin.ai. The platform combines deep multi-view personality profiling framework and style generative adversarial networks facilitating the automatic creation of content that appeals to different human personality types. The platform can be used for the enhancement of the social networking user experience as well as for content marketing routines. Guided by the MBTI personality type, automatically derived from a user social network content, SoMin.ai generates new social media content based on the preferences of other users with a similar personality type aiming at enhancing the user experience on social networking venues as well diversifying the efforts of marketers when crafting new content for digital marketing campaigns. The real-time user feedback to the platform via the platform's GUI fine-tunes the content generation model and the evaluation results demonstrate the promising performance of the proposed multi-view personality profiling framework when being applied in the content generation scenario. By leveraging content generation at a large scale, marketers will be able to execute more effective digital marketing campaigns at a lower cost.
description: WSDM 2021 - Demonstration
Shared Surfaces and Spaces: Collaborative Data Visualisation in a Co-located Immersive Environment
Creators: name: Lee, Benjamin
name: Hu, Xiaoyun
name: Cordeil, Maxime
name: Prouzeau, Arnaud
name: Jenny, Bernhard
name: Dwyer, Tim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Immersive technologies offer new opportunities to support collaborative visual data analysis by providing each collaborator a personal, high-resolution view of a flexible shared visualisation space through a head mounted display. However, most prior studies of collaborative immersive analytics have focused on how groups interact with surface interfaces such as tabletops and wall displays. This paper reports on a study in which teams of three co-located participants are given flexible visualisation authoring tools to allow a great deal of control in how they structure their shared workspace. They do so using a prototype system we call FIESTA: the Free-roaming Immersive Environment to Support Team-based Analysis. Unlike traditional visualisation tools, FIESTA allows users to freely position authoring interfaces and visualisation artefacts anywhere in the virtual environment, either on virtual surfaces or suspended within the interaction space. Our participants solved visual analytics tasks on a multivariate data set, doing so individually and collaboratively by creating a large number of 2D and 3D visualisations. Their behaviours suggest that the usage of surfaces is coupled with the type of visualisation used, often using walls to organise 2D visualisations, but positioning 3D visualisations in the space around them. Outside of tightly-coupled collaboration, participants followed social protocols and did not interact with visualisations that did not belong to them even if outside of its owner's personal workspace.
description: Presented at IEEE Conference on Information Visualization (InfoVis 2020)
กระบวนการเสริมสร้างต้นทุนชีวิตด้านพลังเพื่อนและกิจกรรมของนักศึกษา
Creators: name: ศศิวรรณ ทัศนเอี่ยม
Publisher: name: Sakon Nakhon Press
Year: 2015
Subjects: ต้นทุนชีวิต, พลังเพื่อน, กระบวนการเสริมสร้างต้นทุนชีวิต

description: 2, 7, SNRU Journal of Science and Technology
A search for distant radio galaxies from SUMSS and NVSS: II. Optical Spectroscopy
Creators: name: De Breuck, Carlos
name: Klamer, Ilana
name: Johnston, Helen
name: Hunstead, Richard
name: Bryant, Julia
name: Rocca-Volmerange, Brigitte
name: Sadler, Elaine
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This is the second in a series of papers presenting observations and results for a sample of 76 ultra-steep-spectrum (USS) radio sources in the southern hemisphere designed to find galaxies at high redshift. Here we focus on the optical spectroscopy program for 53 galaxies in the sample. We report 35 spectroscopic redshifts, based on observations with the Very Large Telescope (VLT), the New Technology Telescope (NTT) and the Australian National University's 2.3m telescope; they include five radio galaxies with z>3. Spectroscopic redshifts for the remaining 18 galaxies could not be confirmed: three are occulted by Galactic stars, eight show continuum emission but no discernible spectral lines, whilst the remaining seven galaxies are undetected in medium-deep VLT integrations. The latter are either at very high redshift (z >~7) or heavily obscured by dust. A discussion of the efficiency of the USS technique is presented. Based on the similar space density of z>3 radio galaxies in our sample compared with other USS-selected samples, we argue that USS selection at 843-1400 MHz is an efficient and reliable technique for finding distant radio galaxies.
description: 15 Pages including 49 PostScript figures. Accepted for publication in MNRAS. Corrected one author name; text unchanged
รูปแบบการเรียนการสอนศีลธรรมที่เหมาะสมของครูพระสอนศีลธรรมในโรงเรียน
Creators: name: พระมหาวิไลศักดิ์ หงษ์ศรี
Publisher: name: Sakon Nakhon Press
Year: 2015
Subjects: รูปแบบการจัดการเรียนการสอน, การสอนศีลธรรม, ครูพระสอนศีลธรรม

description: 2, 7, SNRU Journal of Science and Technology
On linearization of super sine-Gordon equation
Creators: name: Siddiq, M.
name: Hassan, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Two sets of super Riccati equations are presented which result in two linear problems of super sine-Gordon equation. The linear problems are then shown to be related to each other by a super gauge transformation and to the super Bäcklund transformation of the equation.
description: 9 Pages
AB Aurigae Resolved: Evidence for Spiral Structure
Creators: name: Corder, Stuartt
name: Eisner, Josh
name: Sargent, Anneila
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We obtained high angular resolution (~2") images of the 13CO(J=1-0) line and 2.7 millimeter continuum emission, and slightly lower resolution images of 12CO(J=1-0) and C18O(J=1-0) line emission toward the Herbig Ae star AB Aurigae. We resolve a circumstellar disk of diameter 780 AU (FWHM) with a velocity pattern consistent with a purely rotational disk at inclination 21.5 degrees and position angle 58.6 degrees. Using Keplerian disk models, we find a central source dynamical mass of 2.8+-0.1 Msun and a cutoff radius of 615 AU for the 13CO emission. Inclination, mass, and radius determined from 12CO and C18O observations agree with those values, given optical depth and abundance effects. As a result of the high angular resolution of our observations, we confirm the existence of spiral structure suggested by near-IR scattered light images and show that the spiral arms represent density contrasts in the disk.
description: 11 pages, 3 figures, accepted ApJ Letters
Nonlinear dynamics of a dense two-dimensional dipolar exciton gas
Creators: name: Rapaport, Ronen
name: Chen, Gang
name: Simon, Steven H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We use a simple model to describe the nonlinear dynamics of a dense two dimensional dipolar exciton gas. The model predicts an initial fast expansion due to dipole-dipole pressure, followed by a much slower diffusion. The model is in very good agreement with recent experimental results. We show that the dipole pressure induced expansion strongly constrains the time available for achieving and observing Bose-Einstein quantum statistical effects, indicating a need for spatial exciton traps. We also suggest that nonlinear ballistic exciton transport due to the strong internal dipole pressure is readily achievable.
description: 5 pages, 4 figures
Two-dimensional honeycomb-kagome V2O3: a robust room-temperature magnetic Chern insulator interfaced with graphene
Creators: name: Mellaerts, Simon
name: Meng, Ruishen
name: Menghini, Mariela
name: Afanasiev, Valeri
name: Seo, Jin Won
name: Houssa, Michel
name: Locquet, Jean-Pierre
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The possibility of dissipationless chiral edge states without the need of an external magnetic field in the quantum anomalous Hall effect (QAHE) offers a great potential in electronic/spintronic applications. The biggest hurdle for the realization of a room-temperature magnetic Chern insulator is to find a structurally stable material with a sufficiently large energy gap and Curie temperature that can be easily implemented in electronic devices. This work based on first-principle methods shows that a single atomic layer of V2O3 with honeycomb-kagome (HK) lattice is structurally stable with a spin-polarized Dirac cone which gives rise to a room-temperature QAHE by the existence of an atomic on-site spin-orbit coupling (SOC). Moreover, by a strain and substrate study, it was found that the quantum anomalous Hall system is robust against small deformations and can be supported by a graphene substrate.
description: Accepted at NPJ 2D Materials & Applications
Application of density functional theory to the calculation of molecular core-electron binding energies
Creators: name: Cavigliasso, German
Publisher: name: University of British Columbia
Year: 2009

description: The procedure for calculating core-electron binding energies (CEBEs), based on the unrestricted generalized transition state (uGTS) model combined with density functional theory (DFT) employing Becke's 1988 exchange (B88) and Perdew's 1986 correlation (P86) functionals, which has proven to yield highly accurate results for C, N, O, and F cases, was extended to boroncontaining molecules and to Si, P, S, CI, and Ar cases. Both unsealed and scaled basis sets were used in the studies of boroncontaining molecules. The scaled-pVTZ basis set was as highly efficient for boron as it had been found to be for C, N, O, and F cases; the average absolute deviation (AAD) of the calculated CEBEs from experiment was 0.24 eV, compared to 0.23 eV for the much larger cc-pV5Z basis set. A generalization of the exponent-scaling methodology was proposed and tested on boron-containing molecules, and was found not to improve the original results to a significant extent. The preliminary calculations of Si, P, S, CI, and Ar CEBEs indicated that, in order to achieve the accuracy obtained for second-period elements, refinement of the basis sets and inclusion of relativistic effects are necessary. As an additional application of the DFT/uGTS/scaled-pVTZ approach, the CEBEs of four isomers of C₃H₅NO were calculated. The distinctive nature of the core-ionization spectra of the isomers was depicted by the results, thus illustrating the potential utilization of accurate theoretical predictions as a complement to electron spectroscopy for chemical analysis. The model error in uGTS calculations and the errors in the functionals employed were calculated. It was observed that the high accuracy of the B88/P86 combination was due to a fortuitous cancellation of the functional and model errors. In view of this finding, a Kohn-Sham total-energy difference approach, which eliminates the model error, was investigated. Ten functional combinations and several basis sets (including unsealed, scaled, and core-valence correlated functions) were tested using a database of reliable observed CEBEs. The functionals designed by Perdew and Wang (1986 exchange and 1991 correlation) were found to give the best performance with an A A D from experiment of 0.15 eV. The scaled basis sets did not perform as well as they did in the uGTS calculations, but it was found that the core-valence correlated cc-pCVTZ basis functions were an excellent alternative to the cc-pV5Z set as they provided equally accurate results and could be applied to larger molecules.
The influence of crack-imbalance orientation and orbital evolution for an extended cracked Jeffcott rotor
Creators: name: Gomez-Mancilla, Julio
name: Sinou, Jean-Jacques
name: Nosov, V. R.
name: Thouverez, Fabrice
name: Zambrano, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Physics (physics.gen-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Vibration peaks occurring at rational fractions of the fundamental rotating critical speed, here named Local Resonances, facilitate cracked shaft detection during machine shut-down. A modified Jeffcott-rotor on journal bearings accounting for gravity effects and oscillating around nontrivial equilibrium points is employed. Modal parameter selection allows this linear model to represent first mode characteristics of real machines. Orbit evolution and vibration patterns are analyzed, yielding useful results. Crack detection results indicate that, instead of 1x and 2x components, analysis of the remaining local resonances should have priority; this is due to crack-residual imbalance interaction and to 2x multiple induced origins. Therefore, local resonances and orbital evolution around 1/2, 1/3 and 1/4 of the critical speed are emphasized for various crack-imbalance orientations.
Multi-task learning using NEural networks for biomedical text mining
Creators: name: Langnickel, Lisa
name: Madan, Sumit
name: Hofmann-Apitius, Martin
name: Fluck, Juliane
Publisher: name: F1000 Research Limited
Year: 2019

description: This work presents the development of a multi-task workflow for named entity recognition (NER) and following relation extraction (RE) from biomedical literature using neural networks. With the increasing amount of data, the automated information extraction becomes more and more important in order to gain relevant information and draw scientific conclusions. The application of neural networks for text mining has been shown to achieve promising results. One of the biggest problems of training neural networks is the limited availability of labeled data. This is especially true for the biomedical field because of its complexity. Therefore, this work focuses on two methods. The first is to make use of contextual word models using unsupervised pre-training (with large amounts of data). On top of this, specific models for NER and RE are trained using annotated data. This is done using a multi-task which means that the model is trained on different, but related data sets simultaneously. On the application side, the aim is to generate a model able to predict microRNA-disease associations. The keyword “miRNA” yields nowadays more than 80,000 publication entries in PubMed. Since they are promising drug targets, the automatic extraction of miRNA-disease associations is of enormous interest.For the development of the workflow, state-of-the-art methods are adapted, combined and evaluated on the use-case mentioned.
The Futures of English: Introduction from the UK
Creators: name: Gagnier, Regenia
Publisher: name: Humanities Commons
Year: 2023
Subjects: subject: English language
subject: Language and languages
subject: Decolonization
subject: Cosmopolitanism
subject: Globalization
subject: Literature
subject: International Association of University Professors of English

description: Will students raised on social media still read English literature? • What is the role of English/American literature in the PRC, India,  Australasia, the USA? • What is the role of English language in relation to other global  and local languages? • What is the role of decolonising efforts? • How do our respective state apparatuses affect language and  literature teaching? Part I ‘International Perspectives on English Language and  Literature’ summarises the global spread of English since  the eighteenth century and outlines the concerns of the  special issue: the global futures of English language and  literature in information society in Africa, Australia, India,  the PRC, Europe and the UK, and the USA; the role of decolonising efforts; and the role of our respective state apparatuses in higher education policy. Part II, ‘English Studies  in Britain Today’, discusses the findings of the recent (June  2023) British Academy report English Studies Provision in UK  Higher Education, including the decline in literary studies  among students and the rise of Creative Writing in part in  response to political-economic rhetoric. Part III, ‘Global and  World Englishes’, returns to global and transnational practices beyond Britain and Europe to argue for more inclusive,  decolonising practices around world literatures. We might  take the lived histories of global and world Englishes to transcend both romantic revolutionary and far-right exclusionary  nationalisms in literary and language studies in favour of  more cosmopolitan, multilingual, and convivial approaches.
[Class elicitation session]
Creators: name: Mukacha, Andrew
name: Bothfeld, Sarah
name: Faytak, Matthew
name: Granados, Alejandro
name: Hyman, Larry M.
name: Lei, Justin
name: Minas, Emil
name: Morales, Mark
name: Rolle, Nicholas
name: Schultz, Donald
name: Spingeld, Jeffrey
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: Lulamogi language

description: Grammatical elicitation
Data Visceralization: Enabling Deeper Understanding of Data Using Virtual Reality
Creators: name: Lee, Benjamin
name: Brown, Dave
name: Lee, Bongshin
name: Hurter, Christophe
name: Drucker, Steven
name: Dwyer, Tim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: A fundamental part of data visualization is transforming data to map abstract information onto visual attributes. While this abstraction is a powerful basis for data visualization, the connection between the representation and the original underlying data (i.e., what the quantities and measurements actually correspond with in reality) can be lost. On the other hand, virtual reality (VR) is being increasingly used to represent real and abstract models as natural experiences to users. In this work, we explore the potential of using VR to help restore the basic understanding of units and measures that are often abstracted away in data visualization in an approach we call data visceralization. By building VR prototypes as design probes, we identify key themes and factors for data visceralization. We do this first through a critical reflection by the authors, then by involving external participants. We find that data visceralization is an engaging way of understanding the qualitative aspects of physical measures and their real-life form, which complements analytical and quantitative understanding commonly gained from data visualization. However, data visceralization is most effective when there is a one-to-one mapping between data and representation, with transformations such as scaling affecting this understanding. We conclude with a discussion of future directions for data visceralization.
description: Presented at IEEE Conference on Information Visualization (InfoVis 2020), InfoVis Honourable Mention Award
Fermat Principle in Finsler Spacetimes
Creators: name: Perlick, Volker
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is shown that, on a manifold with a Finsler metric of Lorentzian signature, the lightlike geodesics satisfy the following variational principle. Among all lightlike curves from a point (emission event) to a timelike curve (worldline of receiver), the lightlike geodesics make the arrival time stationary. Here ``arrival time'' refers to a parametrization of the timelike curve. This variational principle can be applied (i) to the vacuum light rays in an alternative spacetime theory, based on Finsler geometry, and (ii) to light rays in an anisotropic non-dispersive medium with a general-relativistic spacetime as background.
description: 18 pages, submitted to Gen. Rel. Grav
The Impact of a STEM-based Entrepreneurship Program on the Entrepreneurial Intention of Secondary School Female Students
Creators: name: Shahin, Mojtaba
name: Ilic, Olivia
name: Gonsalvez, Chris
name: Whittle, Jon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Despite dedicated effort and research in the last two decades, the entrepreneurship field is still limited by little evidence-based knowledge of the impacts of entrepreneurship programs on the entrepreneurial intention of students in pre-university levels of study. Further, gender equity continues to be an issue in the entrepreneurial sector, particularly in STEM-focused entrepreneurship. In this context, this study was designed to explore the effects of a one-day female-focused STEM-based entrepreneurship program (for brevity, we call it the OzGirlsEntrepreneurship program) on the entrepreneurial intention of secondary school female students. The study collected data from two surveys completed by 193 secondary school female students, aged 14-16 years, who participated in the OzGirlsEntrepreneurship program. This program encouraged girls to develop and implement creative computational solutions to socially relevant problems, with an Internet of Things (IoT) component using the micro:bit device. The findings reveal that a key factor in the development of entrepreneurial attitudes in young female students is associated with soft-skills development, particularly in the areas of creative thinking, risk-taking, problem-solving, and leadership development. The importance of meaningful human connections, including positive role modelling and peer to peer learning were also important factors in fostering entrepreneurial intent. With these factors in mind, our findings highlight that the OzGirlsEntrepreneurship program substantially increased the entrepreneurial intention of secondary school female students. In addition, this study offers actionable implications and recommendations to develop and deliver entrepreneurship education programs for secondary school level students.
description: 20 Pages, Accepted to appear in International Entrepreneurship and Management Journal (IEMJ), Springer, 2020
title: Resilience and coping behaviour among micro and small sized enterprises in times of economic crisis: A mixed-methods exploration of Greek and Cypriot firms
Creators: name: Sakellarios, N
Publisher: name: Liverpool John Moores University
Year: 2024

description: The focus of this study was to explore organisational resilience in the context of micro, small, and medium sized enterprises (SMEs). Following the 2008 Global Financial Crisis (GFC), the deteriorating business conditions worldwide posed serious challenges to many firms. SMEs were particularly affected by the volatile environment due to acknowledged operational limitations (e.g., scarce resources) restricting their capacity to effectively respond to the new business reality. The impact was extremely high for businesses in the Southern European periphery, including Greece and Cyprus. Despite the growing academic interest in the concept of resilience over the past years, it remains unclear how SMEs can develop resilience and cope with different type of shocks (e.g., 2008 GFC, COVID-19). Due to the significant role SMEs have for the Greek and Cypriot economies (e.g., employment), among other countries, and various ongoing challenges (e.g., access to finance) that leave them exposed to impending turbulences, it is urgent to further explore the antecedents of resilience and determine how SMEs can promote resilience capabilities to adapt to volatile operational conditions. Based on a mixed-methods approach (parallel mixed design), empirical data were collected via semi-structured interviews (n=135) and questionnaires (n=406) from micro and small businesses (MSEs) in Greece and Cyprus; the lack of responses from medium sized enterprises represents one of the limitations of the study. In line with a parallel mixed data analysis, a distinct thematic analysis of qualitative data resulted in several themes that reflect the post-2008 business environment in Greece and Cyprus, and the factors that influence the resilience capacity of MSEs. Additional descriptive and inferential statistical tests provided evidence regarding the performance of Greek and Cypriot MSEs after the 2008 GFC and identified the critical success factors associated with a firm’s coping capacity, among other results. Following the integration of qualitative and quantitative findings (narrative, joint display approaches), the resulting meta-inferences highlight several characteristics that influence the different resilience phases, namely anticipation (e.g., environmental scanning), coping (e.g., financial resourcefulness), and adaptation (e.g., innovative activities). The findings provide additional empirical support about the antecedents of resilience, specifically in the context of micro and small firms from Greece and Cyprus, and respond to acknowledged knowledge gaps, thereby contribute to the existing body of literature focusing on organisational resilience.
The INTEGRAL - HESS/MAGIC connection: a new class of cosmic high energy accelerators from keV to TeV
Creators: name: Ubertini, Pietro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The recent completion and operation of the High Energy Stereoscopic System, an array of ground based imaging Cherenkov telescopes, has provided a survey with unprecedented sensitivity of the inner part of the Galaxy and revealed a new population of very high energy gamma-rays sources emitting at E$>$100 GeV. Most of them were reported to have no known radio or X-ray counterpart and hypothesised to be representative of a new class of dark nucleonic cosmic sources. In fact, very high energy gamma-rays with energies E $>$ 10$^{11}$ eV are the best proof of non-thermal processes in the universe and provide a direct in-site view of matter-radiation interaction at energies by far greater than producible in ground accelerators. At lower energy INTEGRAL has regularly observed the entire galactic plane during the first 1000 day in orbit providing a survey in the 20-100 keV range resulted in a soft gamma-ray sky populated with more than 200 sources, most of them being galactic binaries, either BHC or NS. Very recently, the INTEGRAL new source IGR J18135-1751 has been identified as the soft gamma-ray counterpart of HESS J1813-178 and AXJ1838.0-0655 as the X/gamma-ray counterpart of HESS J1837-069. Detection of non thermal radio, X and gamma-ray emission from these TeV sources is very important to discriminate between various emitting scenarios and, in turn, to fully understand their nature. The implications of these new findings in the high energy Galactic population will be addressed.
description: 9 pages, 8 figures, Workshop - Focusing Telescopes in Nuclear Astrophysics - September 12 - 15, 2005, Espace St. Jacques, Bonifacio, Corsica, France, "Experimental Astronomy", in press
A controlled study of depression and suicidal ideation among homosexual students in Nigeria (ID 97)
Creators: name: Olakunle Oginni
name: Boladale Mapayi
name: Kolawole Mosaku
name: Adesanmi Akinsulore
Publisher: name: F1000Research
Year: 2015

description: Eighty-two heterosexual and homosexual students were respectively matched for age and sex in a cross-sectional study. Both groups were assessed for depression, suicidal ideation and resilience. Homosexual students were 3.7 times more likely to be depressed and 3.6 times more likely to be suicidal compared to heterosexual students. Protective factors include resilience and off-campus residence, while childhood factors such as gender non-conformity and parental neglect increased the risk.

The role of protective and risk factors would require further investigation for clinical application in homophobic countries such as Nigeria.
The invariant manifold approach applied to nonlinear dynamics of a rotor-bearing system
Creators: name: Villa, Cristiano
name: Sinou, Jean-Jacques
name: Thouverez, Fabrice
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Physics (physics.class-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The invariant manifold approach is used to explore the dynamics of a nonlinear rotor, by determining the nonlinear normal modes, constructing a reduced order model and evaluating its performance in the case of response to an initial condition. The procedure to determine the approximation of the invariant manifolds is discussed and a strategy to retain the speed dependent effects on the manifolds without solving the eigenvalue problem for each spin speed is presented. The performance of the reduced system is analysed in function of the spin speed.
Unifying XRFs and GRBs with a Fisher-Shaped Universal Jet Model
Creators: name: Donaghy, T. Q.
name: Graziani, C.
name: Lamb, D. Q.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show analytically that GRB jets with an emissivity profile given by the Fisher distribution, epsilon(theta) = A * e^(B cos(theta)), have the unique property of producing equal numbers of bursts per logarithmic interval in Eiso, and therefore in most burst properties. Since this broad distribution of burst properties is a key feature found by HETE-2, a Fisher-shaped universal jet model can explain many of the observed properties of XRFs, X-ray-rich GRBs, and GRBs reasonably well, in contrast to a power-law universal model. For small viewing angles, the Fisher distribution can be approximated by a Gaussian, whose properties have been explored by Zhang et al. (2004). We also show that the Fisher universal jet model produces a broad distribution in the inferred radiated energy Egamma_inf, in contrast to the narrow distribution predicted by the uniform variable opening-angle jet model Lamb, Donaghy & Graziani (2005). Here we present Monte Carlo simulations of both a Fisher-shaped universal jet model and a Fisher-shaped variable opening-angle jet model.
description: 4 pages, 2 figures. Poster presented at the 4th Workshop Gamma-Ray Bursts in the Afterglow Era, Rome,18-22 October 2004. Editors: L. Piro, L. Amati, S. Covino, and B. Gendre. Il Nuovo Cimento, in press
Negative concord in Romanian
Creators: name: Teodorescu, Viorica Alexandra
Publisher: name: The University of Texas at Austin
Year: 2004
Subjects: Negative concord
Romanian

description: The phenomenon of negative concord has received much attention in the literature, especially from the perspective of Romance languages. This study contributes to the ongoing debate by presenting and analyzing novel data from Romanian. Romanian negative concord differs from all types of negative concord previously described. In finite clauses it resembles Polish and Russian, while in non-finite clauses it is much like Spanish and Italian. Nevertheless, the similarity with the Spanish and Italian data is only partial. I propose an analysis of this pattern which posits a silent negation and treats all morphologically negative noun phrases and adverbs as existential quantifiers. Moreover, it is shown that the licensing relation between the silent negation and these expressions is subject to locality constraints and that the so called double negation reading involves partial reconstruction. The licensing and interpretation contrast between finite and non-finite clauses relates to a verb movement asymmetry
Triangle relations for XYZ states
Creators: name: Zhu, Kai
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We propose novel triangle relations, not the well-known triangle singularity, for better understanding of the exotic XYZ states. Nine XYZ resonances, X(3872), Y(4230), Zc(3900), X(4012), Y(4360/4390), Zc(4020), X(4274), Y(4660), and Zcs(3985) have been classified into triples to construct three triangles based on the assumption that they are all tetra-quark states. We also suggest some channels deserving search for with high priority based on this hypothesis, as well as predictions of a few production/decay rates of these channels. We hope further experimental studies of the XYZ states will benefit from our results.
description: 9 pages, 3 figures, 2 tables
Site dilution of quantum spins in the honeycomb lattice
Creators: name: Castro, Eduardo V.
name: Peres, N. M. R.
name: Beach, K. S. D.
name: Sandvik, Anders W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss the effect of site dilution on both the magnetization and the density of states of quantum spins in the honeycomb lattice, described by the antiferromagnetic Heisenberg spin-S model. For this purpose a real-space Bogoliubov-Valatin transformation is used. In this work we show that for the S>1/2 the system can be analyzed in terms of linear spin wave theory. For spin S=1/2, however, the linear spin wave approximation breaks down. In this case, we have studied the effect of dilution on the staggered magnetization using the Stochastic Series Expansion Monte Carlo method. Two main results are to be stressed from the Monte Carlo method: (i) a better value for the staggered magnetization of the undiluted system, m=0.2677(6); (ii) a finite value of the staggered magnetization of the percolating cluster at the classical percolation threshold, showing that there is no quantum critical transition driven by dilution in the Heisenberg model. In the solution of the problem using linear the spin wave method we pay special attention to the presence of zero energy modes. Using a combination of linear spin wave analysis and the recursion method we were able to obtain the thermodynamic limit behavior of the density of states for both the square and the honeycomb lattices. We have used both the staggered magnetization and the density of states to analyze neutron scattering experiments and Neel temperature measurements on quasi-two- -dimensional honeycomb systems. Our results are in quantitative agreement with experimental results on Mn_pZn_{1-p}PS_3 and on the Ba(Ni_pMg_{1-p})_2V_2O_8.
description: 21 pages (REVTEX), 16 figures
Magnetically induced metal-insulator transition in Pb2CaOsO6
Creators: name: Jacobsen, Henrik
name: Feng, Hai L.
name: Princep, Andrew J.
name: Rahn, Marein C.
name: Guo, Yanfeng
name: Chen, Jie
name: Matsushita, Yoshitaka
name: Tsujimoto, Yoshihiro
name: Nagao, Masahiro
name: Khalyavin, Dmitry
name: Manuel, Pascal
name: Murray, Claire A.
name: Donnerer, Christian
name: Vale, James G.
name: Sala, Marco Moretti
name: Yamaura, Kazunari
name: Boothroyd, Andrew T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on the structural, magnetic, and electronic properties of two new double-perovskites synthesized under high pressure; Pb2CaOsO6 and Pb2ZnOsO6. Upon cooling below 80 K, Pb2CaOsO6 simultaneously undergoes a metal--insulator transition and develops antiferromagnetic order. Pb2ZnOsO6, on the other hand, remains a paramagnetic metal down to 2 K. The key difference between the two compounds lies in their crystal structure. The Os atoms in Pb2ZnOsO6 are arranged on an approximately face-centred cubic lattice with strong antiferromagnetic nearest-neighbor exchange couplings. The geometrical frustration inherent to this lattice prevents magnetic order from forming down to the lowest temperatures. In contrast, the unit cell of Pb2CaOsO6 is heavily distorted up to at least 500 K, including antiferroelectric-like displacements of the Pb and O atoms despite metallic conductivity above 80 K. This distortion relieves the magnetic frustration, facilitating magnetic order which in turn drives the metal--insulator transition. Our results suggest that the phase transition in Pb2CaOsO6 is spin-driven, and could be a rare example of a Slater transition.
description: 14 pages, 9 figures. Accepted as a regular article in Phys. Rev. B
Discovery of a Promissing Candidate of WZ Sge-Type Dwarf Novae, ASAS 160048-4846.2: Evidence for Double-Peaked Humps
Creators: name: Imada, Akira
name: Monard, L. A. G. Berto
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on time-resolved CCD photometry during the 2005 June outburst of a dwarf nova, ASAS160048-4846.2. The observed light curves unambiguously showed embryonic humps with a period of 0.063381(41) days, after which genuine superhumps emerged with a period of 0.064927(3) days. Based on evidence for double-peaked humps in the earlier stage of the outburst, this object might be qualified as the seventh member of WZ Sge-type dwarf novae after Var Her 04. If the former period is the same as, or very close to the orbital period of the system, as in other WZ Sge systems, the fractional superhump excess is about 2.4${%}$. This value is unexpectedly larger than that of other WZ Sge-type dwarf novae. The early phase of our observing run provided evidence for the transition from chaotic humps to genuine superhumps, together with increasing the amplitude.
description: 4 pages, 6 figures, submitted to PASJ
The Spatial Crossover between Far-From-Equilibrium and Near-Equilibrium Dynamics in Locally Driven Suspensions
Creators: name: Svetlizky, Ilya
name: Roichman, Yael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We examine the response of a quasi-two-dimensional colloidal suspension to a localized circular driving induced by optical tweezers. This approach, a microscale version of rheometry, allows us to resolve over three orders of magnitude in Péclet number ($Pe$) and provide a direct observation of a sharp spatial crossover from far- to near-thermal-equilibrium regions of the suspension. In particular, particles migrate from high to low $Pe$ regions and form strongly inhomogeneous steady-state density profiles with an emerging length scale that does not depend on the particle density and is set by $Pe\approx1$. We show that the phenomenological two phase fluid constitutive model is in line with our results.
description: 5 pages 4 figures
D-branes in Little String Theory
Creators: name: Israel, Dan
name: Pakman, Ari
name: Troost, Jan
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze in detail the D-branes in the near-horizon limit of NS5-branes on a circle, the holographic dual of little string theory in a double scaling limit. We emphasize their geometry in the background of the NS5-branes and show the relation with D-branes in coset models. The exact one-point function giving the coupling of the closed string states with the D-branes and the spectrum of open strings is computed. Using these results, we analyze several aspects of Hanany-Witten setups, using exact CFT analysis. In particular we identify the open string spectrum on the D-branes stretched between NS5-branes which confirms the low-energy analysis in brane constructions, and that allows to go to higher energy scales. As an application we show the emergence of the beta-function of the N=2 gauge theory on D4-branes stretching between NS5-branes from the boundary states describing the D4-branes. We also speculate on the possibility of getting a matrix model description of little string theory from the effective theory on the D1-branes. By considering D3-branes orthogonal to the NS5-branes we find a CFT incarnation of the Hanany-Witten effect of anomalous creation of D-branes. Finally we give an brief description of some non-BPS D-branes.
description: JHEP class; 61 pages, 12 figures. v2: small corrections, references added; v3: some corrections in the non-BPS branes section, published version
Regularisation, optimisation, subregularity
Creators: name: Valkonen, Tuomo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: Regularisation theory in Banach spaces, and non--norm-squared regularisation even in finite dimensions, generally relies upon Bregman divergences to replace norm convergence. This is comparable to the extension of first-order optimisation methods to Banach spaces. Bregman divergences can, however, be somewhat suboptimal in terms of descriptiveness. Using the concept of (strong) metric subregularity, previously used to prove the fast local convergence of optimisation methods, we show norm convergence in Banach spaces and for non--norm-squared regularisation. For problems such as total variation regularised image reconstruction, the metric subregularity reduces to a geometric condition on the ground truth: flat areas in the ground truth have to compensate for the fidelity term not having second-order growth within the kernel of the forward operator. Our approach to proving such regularisation results is based on optimisation formulations of inverse problems. As a side result of the regularisation theory that we develop, we provide regularisation complexity results for optimisation methods: how many steps $N_δ$ of the algorithm do we have to take for the approximate solutions to converge as the corruption level $δ\searrow 0$?
The Importance of Off-Axis Beaming in Jet Models
Creators: name: Donaghy, T. Q.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Gamma-Ray Bursts (GRBs) are widely thought to originate from collimated jets of material moving at relativistic velocities. Emission from such a jet should be visible even when viewed from outside the angle of collimation. Using Monte Carlo population synthesis methods and including the effects of this off-axis beaming, we can compare various GRB jet models against the global properties of observed bursts. We explore whether or not the X-Ray Flashes (XRFs) seen by HETE-2 and BeppoSAX can be explained as classical GRBs viewed off-axis, and begin to address the more general question of the importance of off-axis beaming in current burst samples.
description: 4 pages, 1 figure. Poster presented at the 4th Workshop Gamma-Ray Bursts in the Afterglow Era, Rome,18-22 October 2004. Editors: L. Piro, L. Amati, S. Covino, and B. Gendre. Il Nuovo Cimento, in press
Geometry Quantization from Supergravity: the case of "Bubbling AdS"
Creators: name: Maoz, Liat
name: Rychkov, Vyacheslav S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the moduli space of 1/2 BPS configurations of type IIB SUGRA found by Lin, Lunin and Maldacena (hep-th/0409174), and quantize it directly from the supergravity action, around any point in the moduli space. This quantization is done using the Crnkovic-Witten-Zuckerman covariant method. We make some remarks on the applicability and validity of this general on-shell quantization method. We then obtain an expression for the symplectic form on the moduli space of LLM configurations, and show that it exactly coincides with the one expected from the dual fermion picture. This equivalence is shown for any shape and topology of the droplets and for any number of droplets. This work therefore generalizes the previous work (hep-th/0505079) and resolves the puzzle encountered there.
description: 30 pages + appendix, 4 figures, JHEP3; v4: a reference added
SN 2020ank: a bright and fast-evolving H-deficient superluminous supernova
Creators: name: Kumar, Amit
name: Kumar, Brajesh
name: Pandey, S. B.
name: Sahu, D. K.
name: Singh, Avinash
name: Anupama, G. C.
name: Aryan, Amar
name: Gupta, Rahul
name: Dutta, Anirban
name: Misra, Kuntal
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigate the observational properties of a hydrogen-deficient superluminous supernova (SLSN) SN 2020ank (at z = 0.2485), with the help of early phase observations carried out between $-$21 and +52 d since $g$-band maximum. Photometrically, SN 2020ank is one of the brightest SLSN ($M_{g,peak}$ $\sim$ $-$21.84 $\pm$ 0.10 mag), having fast pre-peak rising and post-peak decaying rates. The bolometric light curve of SN 2020ank exhibits a higher peak luminosity ($L_{max}$) of $\sim$(3.9 $\pm$ 0.7) $\times$ 10$^{44}$ erg s$^{-1}$ and appears to be symmetric around the peak with $L^{rise}_{max}$/e $\approx$ $L^{fall}_{max}$/e $\approx$ 15 d. The semi-analytical light-curve modelling using the MINIM code suggests a spin down millisecond magnetar with $P_i$ $\sim$2.2 $\pm$ 0.5 ms and $B$ $\sim$(2.9 $\pm$ 0.1) $\times$ $10^{14}$ G as a possible powering source for SN 2020ank. The possible magnetar origin and excess ultraviolet flux at early epochs indicate a central-engine based powering source for SN 2020ank. Near-peak spectra of SN 2020ank are enriched with the W-shaped O II features but with the weaker signatures of C II and Fe III. Using the estimated rise time of $\sim$27.9 d and the photospheric velocity of $\sim$12050 km s$^{-1}$, we constrain the ejecta mass to $\sim$7.2 $M_{\odot}$ and the kinetic energy of $\sim$6.3 $\times$ 10$^{51}$ erg. The near-peak spectrum of SN 2020ank exhibits a close spectral resemblance with that of fast-evolving SN 2010gx. The absorption features of SN 2020ank are blueshifted compared to Gaia16apd, suggesting a higher expansion velocity. The spectral similarity with SN 2010gx and comparatively faster spectral evolution than PTF12dam (a slow-evolving SLSN) indicate the fast-evolving behavior of SN 2020ank.
description: 17 pages, 13 figures, Accepted in MNRAS, Accepted 2020 December 29. Received in original form 2020 October 06
Formation of clusters in the two dimensional t-J model: The mechanism for phase separation
Creators: name: Fledderjohann, A.
name: Langari, A.
name: Muetter, K. -H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The emergence of phase separation is investigated in the framework of a 2D t-J model by means of a variational product ansatz, which covers the infinite lattice by two types of L x L clusters. Clusters of the first type are completely occupied with electrons, i.e. they carry maximal charge Q_e=L^2 and total spin 0, and thereby form the antiferromagnetic background. Holes occur in the second type of clusters -- called ``hole clusters''. They carry a charge Q_h0.5) it turns out that hole clusters are occupied with an even number Q_h
description: 11 pages and 3 figures