cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
About conditions of spatial collapse in an infinite system of Bose particles
Creators: name: Grinyuk, B. E.
name: Bugaev, K. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using the variational principle, we show that the condition of spatial collapse in a Bose gas is not determined by the value of the scattering length of the interaction potential between particles contrary to the result following from the Gross--Pitaevskii equation, where the collapse should take place at a negative scattering length.
description: 3 pages, 1 Encapsulated PostScript figure, uses ujp.sty
ROER4D Project Activity Toolkit - Networking
Creators: name: Goodier, Sarah
name: Cheryl-Ann Hodgkinson-Williams
Publisher: name: University of Cape Town
Year: 2019
Subjects: subject: Education
subject: 130103 Higher Education
subject: FOS: Educational sciences

description: The Research on Open Educational Resources for Development (ROER4D) project was a four-year (2013–2017), large-scale networked project which set out to contribute a Global South research perspective on how open educational resources can help to improve access, enhance quality and reduce the cost of education in the Global South. The project engaged a total of 103 researchers in 18 sub-projects across 21 countries from South America, Sub-Saharan Africa and Asia, coordinated by Network Hub teams at the University of Cape Town (UCT) and Wawasan Open University.
This chapter forms part of a project activity toolkit, which is comprised of five documents outlining activities associated with each of the ROER4D UCT Network Hub pillars of project management activity: networking, evaluation, communications, research capacity building, and curation and dissemination. It is hoped that these chapters will be of practical use to other projects attempting to integrate any of these functions in their operational strategy.
The focus of this chapter is on the networking activities conducted within the ROER4D project. It explores the concept of networking in the ROER4D project context, outlines the project approach towards visualising and analysing the project network, identifies useful tools for network visualisation and offers insights into lessons learned. Overall, it highlights the value of positioning the networking function as a specific project objective in order to better engage current and prospective researchers, educators, publishers, other research projects, advocates and policy-makers.
The low-density spin susceptibility and effective mass of mobile electrons in Si inversion layers
Creators: name: Pudalov, V. M.
name: Gershenson, M. E.
name: Kojima, H.
name: Butch, N.
name: Dizhur, E. M.
name: Brunthaler, G.
name: Prinz, A.
name: Bauer, G.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We studied the Shubnikov-de Haas (SdH) oscillations in high-mobility Si-MOS samples over a wide range of carrier densities $n\simeq (1-50) \times 10^{11}$cm$^{-2}$, which includes the vicinity of the apparent metal-insulator transition in two dimensions (2D MIT). Using a novel technique of measuring the SdH oscillations in superimposed and independently controlled parallel and perpendicular magnetic fields, we determined the spin susceptibility $χ^*$, the effective mass $m^*$, and the $g^*$-factor for mobile electrons. These quantities increase gradually with decreasing density; near the 2D MIT, we observed enhancement of $χ^*$ by a factor of $\sim 4.7$.
description: 4 pages, 4 figures
Autonomous Drug Design with Multi-Armed Bandits
Creators: name: Svensson, Hampus Gummesson
name: Bjerrum, Esben Jannik
name: Tyrchan, Christian
name: Engkvist, Ola
name: Chehreghani, Morteza Haghir
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Biomolecules (q-bio.BM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Recent developments in artificial intelligence and automation support a new drug design paradigm: autonomous drug design. Under this paradigm, generative models can provide suggestions on thousands of molecules with specific properties, and automated laboratories can potentially make, test and analyze molecules with minimal human supervision. However, since still only a limited number of molecules can be synthesized and tested, an obvious challenge is how to efficiently select among provided suggestions in a closed-loop system. We formulate this task as a stochastic multi-armed bandit problem with multiple plays, volatile arms and similarity information. To solve this task, we adapt previous work on multi-armed bandits to this setting, and compare our solution with random sampling, greedy selection and decaying-epsilon-greedy selection strategies. According to our simulation results, our approach has the potential to perform better exploration and exploitation of the chemical space for autonomous drug design.
COVID-19 Modeling Based on Real Geographic and Population Data
Creators: name: Baysazan, Emir
name: Berker, A. Nihat
name: Mandal, Hasan
name: Kaygusuz, Hakan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Intercity travel is one of the most important parameters for combating a pandemic. The ongoing COVID-19 pandemic has resulted in different computational studies involving intercity connections. In this study, the effects of intercity connections during an epidemic such as COVID-19 are evaluated using a new network model. This model considers the actual geographic neighborhood and population density data. This new model is applied to actual Turkish data by the means of provincial connections and populations. A Monte Carlo algorithm with a hybrid lattice model is applied to a lattice with 8,802 data points. Results show that this model is quantitatively very efficient in modeling real world COVID-19 epidemic data based on populations and geographical intercity connections, by the means of estimating the number of deaths, disease spread, and epidemic termination.
description: 10 pages, 7 figures
ROER4D Project Activity Toolkit - Curation and dissemination
Creators: name: Willmers, Michelle
name: King, Thomas
Publisher: name: University of Cape Town
Year: 2019
Subjects: subject: Education
subject: 130103 Higher Education
subject: FOS: Educational sciences

description: The Research on Open Educational Resources for Development (ROER4D) project was a four-year (2013–2017), large-scale networked project which set out to contribute a Global South research perspective on how open educational resources can help to improve access, enhance quality and reduce the cost of education in the Global South. The project engaged a total of 103 researchers in 18 sub-projects across 21 countries from South America, Sub-Saharan Africa and Asia, coordinated by Network Hub teams at the University of Cape Town (UCT) and Wawasan Open University.
This chapter forms part of a project activity toolkit, which is comprised of five documents outlining activities associated with each of the ROER4D UCT Network Hub pillars of project management activity: networking, evaluation, communications, research capacity building, and curation and dissemination (C&D). It is hoped that these chapters will be of practical use to other projects attempting to integrate any of these activities in their operational strategies.
While it has a particularly close link to the project’s research capacity building and communications functions, the processes entailed in C&D activity pertained to and supported all aspects of project activity in that they were designed to facilitate the secure storage and findability of content (both internally and externally) and promote collaboration.
This document outlines the project’s strategic approach in terms of positioning itself as publisher in the context of an open research framework. It highlights the workflows and processes associated with two key aspects of its C&D activity: publication of a peer-reviewed edited volume and the project’s open data initiative.
Rational design principles for giant spin Hall effect in 5d-transition metal oxides
Creators: name: Jadaun, Priyamvada
name: Register, Leonard F
name: Banerjee, Sanjay K
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spin Hall effect (SHE), a mechanism by which materials convert a \textit{charge} current into a \textit{spin} current, invokes interesting physics and promises to empower transformative, energy-efficient memory technology. However, fundamental questions remain about the essential factors that determine SHE. Here we solve this open problem, presenting a comprehensive theory of five \textit{foundational factors} that control the value of intrinsic SHE in transition metal oxides. Arising from our key insight regarding the inherently geometric nature of SHE, we demonstrate that two of these factors are crystal field strength and structural distortions. Moreover, we discover that a new class of materials (anti-perovskites) promises to demonstrate \textit{giant} SHE, that is an order of magnitude larger than that reported for any oxide. We derive three other factors that control SHE and demonstrate the nuanced role of electron correlations. Our findings bring deeper insight into the physics driving SHE, and could help enhance, as well as, externally control SHE values.
Hemimyzon sheni Chen & Fang 2009
Creators: name: Ho, Hsuan-Ching
name: Shao, Kwang-Tsao
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Cypriniformes
Balitoridae
Hemimyzon
Hemimyzon sheni

description: 116. Hemimyzon sheni Chen & Fang, 2009: 186, Figs. 1–2, 4
Holotype. NTOU P–2007–07–077 (50.1), small tributary, 3 kilometers south of Yi–Ting mountain, upper reaches of Tar– Ju River, Tar–Ren Village, Yaitung County, SE Taiwan, coll. S.–H. Chen, 11 Jul. 1993.
Paratypes. NTOU P–2007–07–078 (2, 11.2–30.6), same as holotype.
description: Published as part of Ho, Hsuan-Ching & Shao, Kwang-Tsao, 2011, 2957, pp. 1-74 in Zootaxa 2957 on page 32
Automated Fluid Model Generation and Numerical Analysis of Dielectric Barrier Discharges Using Comsol
Creators: name: Jovanović, A. P.
name: Stankov, M. N.
name: Loffhagen, D.
name: Becker, M. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: MCPlas is introduced as a powerful tool for automated fluid model generation with application to the analysis of dielectric barrier discharges operating in different regimes. MCPlas consists of a number of MATLAB\textsuperscript{\textregistered} scripts and uses the COMSOL Multiphysics\textsuperscript{\textregistered} module LiveLink\textsuperscript{\texttrademark} for MATLAB\textsuperscript{\textregistered} to build up equation-based COMSOL Multiphysics\textsuperscript{\textregistered} models from scratch. The present contribution highlights how MCPlas is used to implement time-dependent models for non-thermal plasmas in spatially one-dimensional and axisymmetric two-dimensional geometries and stresses out the benefit of automation of the modelling procedure. The modelling codes generated by MCPlas are used to study diffuse and filamentary dielectric barrier discharges in argon at sub-atmospheric and atmospheric pressure, respectively. The seamless transition between different levels of model complexity with respect to the considered model geometry is demonstrated. The presented investigation of a single-filament dielectric barrier discharge interacting with a dielectric surface shows that complex phenomena of high technological relevance can be tackled by using plasma models implemented in COMSOL Multiphysics\textsuperscript{\textregistered} via MCPlas.
description: Accepted for publication in IEEE Trans. Plasma Sci. (https://ieeexplore.ieee.org/document/9600812)
Quantum criticality, particle-hole symmetry, and duality of the plateau-insulator transition in the quantum Hall regime
Creators: name: Pruisken, A. M. M.
name: de Lang, D. T. N.
name: Ponomarenko, L. A.
name: de Visser, A.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report new experimental data on the plateau-insulator transition in the quantum Hall regime, taken from a low mobility InGaAs/InP heterostructure. By employing the fundamental symmetries of the quantum transport problem we are able to disentangle the universal quantum critical aspects of the magnetoresistance data (critical indices and scaling functions) and the sample dependent aspects due to macroscopic inhomogeneities. Our new results and methodology indicate that the previously established experimental value for the critical index (kappa = 0.42) resulted from an admixture of both universal and sample dependent behavior. A novel, non-Fermi liquid value is found (kappa = 0.57) along with the leading corrections to scaling. The statement of self-duality under the Chern Simons flux attachment transformation is verified.
description: 4 pages, 2 figures
Terahertz Faraday and Kerr rotation spectroscopy of Bi$_{1-x}$Sb$_x$ films in high magnetic fields up to 30 Tesla
Creators: name: Li, Xinwei
name: Yoshioka, Katsumasa
name: Xie, Ming
name: Noe, G. Timothy
name: Lee, Woojoo
name: Peraca, Nicolas Marquez
name: Gao, Weilu
name: Hagiwara, Toshio
name: Orjan, Handegard S.
name: Nien, Li-Wei
name: Nagao, Tadaaki
name: Kitajima, Masahiro
name: Nojiri, Hiroyuki
name: Shih, Chih-Kang
name: MacDonald, Allan H.
name: Katayama, Ikufumi
name: Takeda, Jun
name: Fiete, Gregory A.
name: Kono, Junichiro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report results of terahertz Faraday and Kerr rotation spectroscopy measurements on thin films of $\text{Bi}_{1-x}\text{Sb}_{x}$, an alloy system that exhibits a semimetal-to-topological-insulator transition as the Sb composition $x$ increases. By using a single-shot time-domain terahertz spectroscopy setup combined with a table-top pulsed mini-coil magnet, we conducted measurements in magnetic fields up to 30~T, observing distinctly different behaviors between semimetallic ($x < 0.07$) and topological insulator ($x > 0.07$) samples. Faraday and Kerr rotation spectra for the semimetallic films showed a pronounced dip that blue-shifted with the magnetic field, whereas spectra for the topological insulator films were positive and featureless, increasing in amplitude with increasing magnetic field and eventually saturating at high fields ($>$20~T). Ellipticity spectra for the semimetallic films showed resonances, whereas the topological insulator films showed no detectable ellipticity. To explain these observations, we developed a theoretical model based on realistic band parameters and the Kubo formula for calculating the optical conductivity of Landau-quantized charge carriers. Our calculations quantitatively reproduced all experimental features, establishing that the Faraday and Kerr signals in the semimetallic films predominantly arise from bulk hole cyclotron resonances while the signals in the topological insulator films represent combined effects of surface carriers originating from multiple electron and hole pockets. These results demonstrate that the use of high magnetic fields in terahertz magnetopolarimetry, combined with detailed electronic structure and conductivity calculations, allows us to unambiguously identify and quantitatively determine unique contributions from different species of carriers of topological and nontopological nature in Bi$_{1-x}$Sb$_x$.
description: 17 pages, 22 figures
E Pluribus Unum Interpretable Convolutional Neural Networks
Creators: name: Dimas, George
name: Cholopoulou, Eirini
name: Iakovidis, Dimitris K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.2.10
subject: 68T45, 68T07

description: The adoption of Convolutional Neural Network (CNN) models in high-stake domains is hindered by their inability to meet society's demand for transparency in decision-making. So far, a growing number of methodologies have emerged for developing CNN models that are interpretable by design. However, such models are not capable of providing interpretations in accordance with human perception, while maintaining competent performance. In this paper, we tackle these challenges with a novel, general framework for instantiating inherently interpretable CNN models, named E Pluribus Unum Interpretable CNN (EPU-CNN). An EPU-CNN model consists of CNN sub-networks, each of which receives a different representation of an input image expressing a perceptual feature, such as color or texture. The output of an EPU-CNN model consists of the classification prediction and its interpretation, in terms of relative contributions of perceptual features in different regions of the input image. EPU-CNN models have been extensively evaluated on various publicly available datasets, as well as a contributed benchmark dataset. Medical datasets are used to demonstrate the applicability of EPU-CNN for risk-sensitive decisions in medicine. The experimental results indicate that EPU-CNN models can achieve a comparable or better classification performance than other CNN architectures while providing humanly perceivable interpretations.
description: Journal paper under review
Sinogastromyzon nantaiensis Chen, Han and Fang 2002
Creators: name: Ho, Hsuan-Ching
name: Shao, Kwang-Tsao
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Cypriniformes
Balitoridae
Sinogastromyzon
Sinogastromyzon nantaiensis

description: 118. Sinogastromyzon nantaiensis Chen, Han and Fang, 2002:240, figs. 1–2
Holotype: NMMBP 465 (44.7), Laonon River, Kaoping basin, Darjin, Liukuei, Pingtung County, Taiwan, Aug.
1994, coll. I.–S. Chen.
Paratype: NMMBP 466 (3, 36.8–40.3), same data as holotype; NMMBP 467 (7, 33.4–44.2), Laonon River, Kaoping basin, Tsaolan, Liukuei, Pingtung County, S Taiwan, Feb. 1995, coll. I.–S. Chen et al.; NMMBP 468 (2, 29.8–35.6), Nanhaur River, Tzengwen River, Peiliao, Tainan County, Taiwan, 29 Oct. 1999, coll. I.–S.Chen and R.–S. Wu.
description: Published as part of Ho, Hsuan-Ching & Shao, Kwang-Tsao, 2011, 2957, pp. 1-74 in Zootaxa 2957 on page 33
On reduced arc spaces of toric varieties
Creators: name: Dumanski, Ilya
name: Feigin, Evgeny
name: Makedonskyi, Ievgen
name: Makhlin, Igor
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: An arc space of an affine cone over a projective toric variety is known to be non-reduced in general. It was demonstrated recently that the reduced scheme structure is worth studying due to various connections with representation theory and combinatorics. In this paper we develop a general machinery for the description of the reduced arc spaces of affine cones over toric varieties. We apply our techniques to a number of classical cases and explore some connections with representation theory of current algebras.
description: 50 pages; minor corrections; final version
Additional file 1 of How does globalization affect COVID-19 responses?
Creators: name: Bickley, Steve J.
name: Chan, Ho Fai
name: Skali, Ahmed
name: Stadelmann, David
name: Torgler, Benno
Publisher: name: figshare
Year: 2021
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 1 Fig. S1. Country-specific timeline for adoption of travel policy restrictions. Diamond markers with black outlines represent the first travel restriction implemented. Countries are ranked according to the Globalization measure. ^Countries with no travel restriction records (n = 32). *Countries without KOF index (n = 24). Five countries do not have any confirmed COVID case at time of study. Fig. S2. Correlation between timing of first confirmed COVID case and globalization. Pearson’s correlation (ρ) is − 0.543 (p
Nonequilibrium chemical potentials of steady-state lattice gas models in contact: A large-deviations approach
Creators: name: Guioth, Jules
name: Bertin, Eric
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We introduce a general framework to describe the stationary state of two driven systems exchanging particles or mass through a contact, in a slow exchange limit. The definition of chemical potentials for the systems in contact requires that the large-deviations function describing the repartition of mass between the two systems is additive, in the sense of being a sum of contributions from each system. We show that this additivity property is satisfied on condition that a macroscopic detailed balance condition holds at contact, and that the coarse-grained contact dynamics satisfies a factorization property. However, the nonequilibrium chemical potentials of the systems in contact keep track of the contact dynamics, and thus do not obey an equation of state. These nonequilibrium chemical potentials can be related either to the equilibrium chemical potential, or to the nonequilibrium chemical potential of the isolated systems. Results are applied both to an exactly solvable driven lattice gas model, and to the Katz-Lebowitz-Spohn model using a numerical procedure to evaluate the chemical potential.
description: 24 pages, 6 figures
The average solution of a TSP instance in a graph
Creators: name: Cambie, Stijn
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C05, 05C09, 05C12, 05C35

description: We define the average $k$-TSP distance $μ_{tsp,k}$ of a graph $G$ as the average length of a shortest walk visiting $k$ vertices, i.e. the expected length of the solution for a random TSP instance with $k$ uniformly random chosen vertices. We prove relations with the average $k$-Steiner distance and characterize the cases where equality occurs. We also give sharp bounds for $μ_{tsp,k}(G)$ given the order of the graph.
description: 10 pages, 3 figures accepted in Journal of Graph Theory
Participant Perceptions of a Robotic Coach Conducting Positive Psychology Exercises: A Qualitative Analysis
Creators: name: Axelsson, Minja
name: Churamani, Nikhil
name: Caldir, Atahan
name: Gunes, Hatice
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper presents a qualitative analysis of participants' perceptions of a robotic coach conducting Positive Psychology exercises, providing insights for the future design of robotic coaches. Participants (n = 20) took part in a single-session (avg. 31 +- 10 minutes) Human-Robot Interaction study in a laboratory setting. We created the design of the robotic coach, and its affective adaptation, based on user-centred design research and collaboration with a professional coach. We transcribed post-study participant interviews and conducted a Thematic Analysis. We discuss the results of that analysis, presenting aspects participants found particularly helpful (e.g., the robot asked the correct questions and helped them think of new positive things in their life), and what should be improved (e.g., the robot's utterance content should be more responsive). We found that participants had no clear preference for affective adaptation or no affective adaptation, which may be due to both positive and negative user perceptions being heightened in the case of adaptation. Based on our qualitative analysis, we highlight insights for the future design of robotic coaches, and areas for future investigation (e.g., examining how participants with different personality traits, or participants experiencing isolation, could benefit from an interaction with a robotic coach).
description: 23 pages, 2 figures
Additional file 1 of Efficacy of capacitive resistive monopolar radiofrequency in the physiotherapeutic treatment of chronic pelvic pain syndrome: study protocol for a randomized controlled trial
Creators: name: A. Carralero-Martínez
name: M. A. Muñoz Pérez
name: R. Pané-Alemany
name: L. Blanco-Ratto
name: S. Kauffmann
name: Ramírez-García, I.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1.
Eliminating the d=5 proton decay operators from SUSY GUTs
Creators: name: Babu, K. S.
name: Barr, S. M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A general analysis is made of the question whether the d=5 proton decay operators coming from exchange of colored Higgsinos can be completely eliminated in a natural way in supersymmetric grand unified models. It is shown that they can indeed be in SO(10) while at the same time naturally solving the doublet-triplet splitting problem, having only two light Higgs doublets, and using no more than a single adjoint Higgs field. Accomplishing all of this requires that the vacuum expectation value of the adjoint Higgs field be proportional to the generator I_{3R} rather than to B-L, as is usually assumed. It is shown that such models can give realistic quark and lepton masses. We also point out a new mechanism for solving the μproblem in the context of SO(10) SUSY GUTs.
description: 24 pages in LaTeX, with 3 figures
Liobagrus formosanus Regan 1908
Creators: name: Ho, Hsuan-Ching
name: Shao, Kwang-Tsao
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Siluriformes
Amblycipitidae
Liobagrus
Liobagrus formosanus

description: 120. Liobagrus formosanus Regan, 1908b:360
Holotype: BMNH 1909.4.28.23 (37 TL), Lake Candidius, Formosa, coll. A. Moltrecht.
description: Published as part of Ho, Hsuan-Ching & Shao, Kwang-Tsao, 2011, 2957, pp. 1-74 in Zootaxa 2957 on page 33
title: Δημιουργία μεταδεδομένων για τα εξωτερικά χαρακτηριστικά των κατοικιών της Αθήνας (19ος - αρχές 20ου αιώνα) και χρήση του προτύπου VRA Core 4.0 για την περιγραφή και κωδικοποίησή τους
title: Metadata creation for the characteristics of the facades of the houses of Athens (19th - early 20th century) and VRA Core 4.0 standard use for their description and codification
titleType: AlternativeTitle
Creators: name: Κρεμμύδα, Αθηνά
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2021
Subjects: subject: Νεοκλασική αρχιτεκτονική
subject: Εκλεκτικιστική αρχιτεκτονική
subject: Μεσοπολεμική αρχιτεκτονική
subject: Όψεις κτηρίων
subject: Βάση δεδομένων
subject: VRA Core 4.0
subject: Μεταδεδομένα

description: Αντικείμενο της παρούσας εργασίας, είναι τα χαρακτηριστικά των όψεων των κτηρίων, στην Αθήνα, κατά την Νεοκλασική, Εκλεκτικιστική και Μεσοπολεμική εποχή. Ειδικότερα, γίνεται η μελέτη και η ανάλυση των χαρακτηριστικών των ιστορικών κατοικιών, με σκοπό την ταξινόμηση και την ψηφιοποίηση τους σε μία βάση δεδομένων, που δημιουργήθηκε με πρότυπο την VRA Core 4.0. Τα τρία πρώτα κεφάλαια στα οποία αναλύονται τα χαρακτηριστικά των όψεων των κτηρίων, χωρίζονται ανά εποχή. Συγκεκριμένα, τα παραπάνω στοιχεία προέκυψαν από την βιβλιογραφική έρευνα αλλά και από πληροφορίες από το διαδίκτυο, δηλαδή από τα social media, από βάσεις δεδομένων, ιστοσελίδες και ψηφιακές βιβλιοθήκες. Το κάθε κεφάλαιο περιλαμβάνει εφτά ενότητες από τις οποίες η πρώτη αφορά τον γεωγραφικό χώρο που καταλάμβανε η πόλη της Αθήνας. Έπειτα, γίνεται η ανάλυση του μεγέθους των κτηρίων και των αρχών οργάνωσης των όψεων των αστικών κατοικιών. Στη τρίτη ενότητα αναλύονται τα υλικά δομής, τα είδη τοιχοποιίας και οι τεχνικές διακόσμησής τους. Στη συνέχεια, πραγματοποιείται η περιγραφή της διακόσμησης της στέψης στην Νεοκλασική και στην Εκλεκτικιστική αρχιτεκτονική. Η αρχιτεκτονική διακόσμηση των κτηρίων περιγράφεται στην πέμπτη ενότητα, η διακόσμηση των ανοιγμάτων στην έκτη και τα χαρακτηριστικά των μπαλκονιών στην έβδομη ενότητα. Στο τέταρτο κεφάλαιο της διπλωματικής εργασίες περιγράφονται οι υφιστάμενες βάσεις δεδομένων στο διαδίκτυο για τα κτήρια αυτών των περιόδων και διευκρινίζεται η ανάγκη και οι λόγοι που οδήγησαν στη σκέψη για τη δημιουργία μεταδεδομένων, δηλαδή οργανωμένων στοιχείων για τις όψεις των αθηναϊκών κατοικιών από το 1830 έως το 1940. Επιπλέον, γίνεται αναφορά στην αξιοποίηση της ευφυίας του πλήθους (crowdsourcing) στους χώρους πολιτισμού και στην διαδικασία που ακολουθείται για την υλοποίηση της έρευνας. Στο τελευταίο και πέμπτο κεφάλαιο, αρχικά περιγράφονται οι πληροφορίες για τη δημιουργία μίας βάσης δεδομένων σύμφωνα με τα στοιχεία της VRA Core 4.0 και παρουσιάζονται οι βάσεις δεδομένων που δημιουργήθηκαν για κάθε περίοδο ξεχωριστά. Τέλος, ακολουθούν κάποιες προτάσεις σχετικά με την χρησιμότητα και την αξιοποίησή της σε μνημεία πολιτισμού.
$Δ$-PINNs: physics-informed neural networks on complex geometries
Creators: name: Costabal, Francisco Sahli
name: Pezzuto, Simone
name: Perdikaris, Paris
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Physics-informed neural networks (PINNs) have demonstrated promise in solving forward and inverse problems involving partial differential equations. Despite recent progress on expanding the class of problems that can be tackled by PINNs, most of existing use-cases involve simple geometric domains. To date, there is no clear way to inform PINNs about the topology of the domain where the problem is being solved. In this work, we propose a novel positional encoding mechanism for PINNs based on the eigenfunctions of the Laplace-Beltrami operator. This technique allows to create an input space for the neural network that represents the geometry of a given object. We approximate the eigenfunctions as well as the operators involved in the partial differential equations with finite elements. We extensively test and compare the proposed methodology against traditional PINNs in complex shapes, such as a coil, a heat sink and a bunny, with different physics, such as the Eikonal equation and heat transfer. We also study the sensitivity of our method to the number of eigenfunctions used, as well as the discretization used for the eigenfunctions and the underlying operators. Our results show excellent agreement with the ground truth data in cases where traditional PINNs fail to produce a meaningful solution. We envision this new technique will expand the effectiveness of PINNs to more realistic applications.
description: 26 pages, 14 figures
Attention-based method for categorizing different types of online harassment language
Creators: name: Karatsalos, Christos
name: Panagiotakis, Yannis
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In the era of social media and networking platforms, Twitter has been doomed for abuse and harassment toward users specifically women. Monitoring the contents including sexism and sexual harassment in traditional media is easier than monitoring on the online social media platforms like Twitter, because of the large amount of user generated content in these media. So, the research about the automated detection of content containing sexual or racist harassment is an important issue and could be the basis for removing that content or flagging it for human evaluation. Previous studies have been focused on collecting data about sexism and racism in very broad terms. However, there is no much study focusing on different types of online harassment attracting natural language processing techniques. In this work, we present an multi-attention based approach for the detection of different types of harassment in tweets. Our approach is based on the Recurrent Neural Networks and particularly we are using a deep, classification specific multi-attention mechanism. Moreover, we tackle the problem of imbalanced data, using a back-translation method. Finally, we present a comparison between different approaches based on the Recurrent Neural Networks.
description: Accepted in "SIMAH (SocIaL Media And Harassment): First workshop on categorizing different types of online harassment languages in social media" @ ECML-PKDD 2019
ROER4D Project Activity Toolkit - Evaluation
Creators: name: Goodier, Sarah
Publisher: name: University of Cape Town
Year: 2019
Subjects: subject: Education
subject: 130103 Higher Education
subject: FOS: Educational sciences

description: The Research on Open Educational Resources for Development (ROER4D) project was a four-year (2013–2017), large-scale networked project which set out to contribute a Global South research perspective on how open educational resources can help to improve access, enhance quality and reduce the cost of education in the Global South. The project engaged a total of 103 researchers in 18 sub-projects across 21 countries from South America, Sub-Saharan Africa and Asia, coordinated by Network Hub teams at the University of Cape Town (UCT) and Wawasan Open University.
This chapter forms part of a project activity toolkit, which is comprised of five documents outlining activities associated with each of the ROER4D UCT Network Hub pillars of project management activity: networking, evaluation, communications, research capacity building, and curation and dissemination. It is hoped that these chapters will be of practical use to other projects attempting to integrate any of these functions in their operational strategy.
The focus of this chapter is on the evaluation activity which took place within the ROER4D project. Using a Utilization-Focused Evaluation (UFE) framework as a scaffold, it outlines and reflects on what evaluation activity was undertaken in the ROER4D project against the 12-step UFE process, why this was done and what was learned from the process. It also offers recommendations for other Global South, large-scale networked projects that may wish to implement an internal, use-focused evaluation process.
Transport Properties of the Diluted Lorentz Slab
Creators: name: Larralde, Hernan
name: Leyvraz, Francois
name: Martinez-Mekler, Gustavo
name: Rechtman, Raul
name: Ruffo, Stefano
Publisher: name: arXiv
Year: 2001
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the behavior of a point particle incident from the left on a slab of a randomly diluted triangular array of circular scatterers. Various scattering properties, such as the reflection and transmission probabilities and the scattering time are studied as a function of thickness and dilution. We show that a diffusion model satisfactorily describes the mentioned scattering properties. We also show how some of these quantities can be evaluated exactly and their agreement with numerical experiments. Our results exhibit the dependence of these scattering data on the mean free path. This dependence again shows excellent agreement with the predictions of a Brownian motion model.
description: 14 pages of text in LaTeX, 7 figures in Postscript
Approximate matrix completion based on cavity method
Creators: name: Noguchi, Chihiro
name: Kabashima, Yoshiyuki
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In order to solve large matrix completion problems with practical computational cost, an approximate approach based on matrix factorization has been widely used. Alternating least squares (ALS) and stochastic gradient descent (SGD) are two major algorithms to this end. In this study, we propose a new algorithm, namely cavity-based matrix factorization (CBMF) and approximate cavity-based matrix factorization (ACBMF), which are developed based on the cavity method from statistical mechanics. ALS yields solutions with less iterations when compared to those of SGD. This is because its update rules are described in a closed form although it entails higher computational cost. CBMF can also write its update rules in a closed form, and its computational cost is lower than that of ALS. ACBMF is proposed to compensate a disadvantage of CBMF in terms of relatively high memory cost. We experimentally illustrate that the proposed methods outperform the two existing algorithms in terms of convergence speed per iteration, and it can work under the condition where observed entries are relatively fewer. Additionally, in contrast to SGD, (A)CBMF does not require scheduling of the learning rate.
description: 20 pages, 11 figures
Pseudobagrus adiposalis Oshima 1919
Creators: name: Ho, Hsuan-Ching
name: Shao, Kwang-Tsao
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Siluriformes
Bagridae
Pseudobagrus
Pseudobagrus adiposalis

description: 123. Pseudobagrus adiposalis Oshima, 1919:181, pl.48, fig. 2
Lectotype: FMNH 59079 (formly CM 8216) (172 TL), Tamsui River near Shinten, Dec. 1916, coll. T. Aoki.
Paralectotype: SU 23176 (4), same as holotype; SU 23009 (1), Sobun River; SU 23122 (1), Heirinbi; all probably coll. T. Aoki in 1916, sent by M. Oshima.
 Remark. Original description was based on a 172–mm TL specimen which was designated as lectotype by Eschmeyer (1998). Data from seven additional specimens were provided and three lots of paralectotypes were relocated by us.
description: Published as part of Ho, Hsuan-Ching & Shao, Kwang-Tsao, 2011, 2957, pp. 1-74 in Zootaxa 2957 on page 34
On the positivity of twisted $L^2$-torsion for 3-manifolds
Creators: name: Duan, Jianru
Publisher: name: arXiv
Year: 2022
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57K31

description: For any compact orientable irreducible 3-manifold $N$ with empty or incompressible toral boundary, the twisted $L^2$-torsion is a non-negative function defined on the representation variety $\operatorname{Hom}(π_1(N),\operatorname{SL}(n,\mathbb C))$. The paper shows that if $N$ has infinite fundamental group, then the $L^2$-torsion function is strictly positive. Moreover, this torsion function is continuous when restricted to the subvariety of upper triangular representations.
description: 18 pages
Competition between fluctuations and disorder in frustrated magnets
Creators: name: Serreau, Julien
name: Tissier, Matthieu
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the effects of impurities on the nature of the phase transition in frustrated magnets, in d=4-epsilon dimensions. For sufficiently small values of the number of spin components, we find no physically relevant stable fixed point in the deep perturbative region (epsilon << 1), contrarily to what is to be expected on very general grounds. This signals the onset of important physical effects.
description: 4 pages, 3 figures, published version
Implications on the origin of cosmic rays in light of 10 TV spectral softenings
Creators: name: Yue, Chuan
name: Ma, Peng-Xiong
name: Yuan, Qiang
name: Fan, Yi-Zhong
name: Chen, Zhan-Fang
name: Cui, Ming-Yang
name: Dai, Hao-Ting
name: Dong, Tie-Kuang
name: Huang, Xiaoyuan
name: Jiang, Wei
name: Lei, Shi-Jun
name: Li, Xiang
name: Liu, Cheng-Ming
name: Liu, Hao
name: Liu, Yang
name: Luo, Chuan-Ning
name: Pan, Xu
name: Peng, Wen-Xi
name: Qiao, Rui
name: Wei, Yi-Feng
name: Wu, Li-Bo
name: Xu, Zhi-Hui
name: Xu, Zun-Lei
name: Yuan, Guan-Wen
name: Zang, Jing-Jing
name: Zhang, Ya-Peng
name: Zhang, Yong-Jie
name: Zhang, Yun-Long
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Precise measurements of the energy spectra of cosmic rays (CRs) show various kinds of features deviating from single power-laws, which give very interesting and important implications on their origin and propagation. Previous measurements from a few balloon and space experiments indicate the existence of spectral softenings around 10 TV for protons (and probably also for Helium nuclei). Very recently, the DArk Matter Particle Explorer (DAMPE) measurement about the proton spectrum clearly reveals such a softening with a high significance. Here we study the implications of these new measurements, as well as the groundbased indirect measurements, on the origin of CRs. We find that a single component of CRs fails to fit the spectral softening and the air shower experiment data simultaneously. In the framework of multiple components, we discuss two possible scenarios, the multiple source population scenario and the background plus nearby source scenario. Both scenarios give reasonable fits to the wide-band data from TeV to 100 PeV energies. Considering the anisotropy observations, the nearby source model is favored.
description: 8 pages, 3 figures and 3 tables; accepted for publication in Frontiers of Physics
ROER4D Project Activity Toolkit - Communication
Creators: name: Sukaina Walji
Publisher: name: University of Cape Town
Year: 2019
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences
subject: Education

description: The Research on Open Educational Resources for Development (ROER4D) project was a four-year (2013–2017), large-scale networked project which set out to contribute a Global South research perspective on how open educational resources can help to improve access, enhance quality and reduce the cost of education in the Global South. The project engaged a total of 103 researchers in 18 sub-projects across 21 countries from South America, Sub-Saharan Africa and Asia, coordinated by central Network Hub teams based at the University of Cape Town and Wawasan Open University.
This chapter forms part of a project activity toolkit, which is comprised of five documents outlining activities associated with each of the ROER4D UCT Network Hub pillars of project management activity: networking, evaluation, communications, research capacity development, and curation and dissemination. It is hoped that these chapters will be of practical use to other research projects attempting to integrate any of these functions in their operational strategy.
The chapter charts the experience of the ROER4D Communications Advisor in developing a research communication strategy for the project. It provides a short overview of the research communication field in order to give context and background to some of the field’s key debates and considerations, with attention given to the specific field of development research communication. Following this, it describes the evolution of the ROER4D research communication strategy.
Pseudobagrus brevianalis subsp. brevianalis brevianalis Regan 1908
Creators: name: Ho, Hsuan-Ching
name: Shao, Kwang-Tsao
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Siluriformes
Bagridae
Pseudobagrus
Pseudobagrus brevianalis
Pseudobagrus brevianalis brevianalis regan, 1908a:151

description: 124. Pseudobagrus brevianalis brevianalis Regan, 1908a:151
Syntype: BMNH 1908.5.27.23–28 (6, up to 115 TL), Lake Candidius, Formosa, coll. Hans Sauter.
 Remark. Watanabe et al. (2007) provided molecular evidence to suggest that the present species is a group of local populations of P. ussuriensis. It was sometimes devided into two subspecies in Taiwan. Also see remark of next species.
description: Published as part of Ho, Hsuan-Ching & Shao, Kwang-Tsao, 2011, 2957, pp. 1-74 in Zootaxa 2957 on page 34
ROER4D Project Activity Toolkit - Research Capacity Development
Creators: name: Trotter, Henry
name: Cheryl-Ann Hodgkinson-Williams
name: Willmers, Michelle
Publisher: name: University of Cape Town
Year: 2019
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences
subject: Education

description: The Research on Open Educational Resources for Development (ROER4D) project was a four-year (2013–2017), large-scale networked project which set out to contribute a Global South research perspective on how open educational resources can help to improve access, enhance quality and reduce the cost of education in the Global South. The project engaged a total of 103 researchers in 18 sub-projects across 21 countries from South America, Sub-Saharan Africa and Asia, coordinated by Network Hub teams based at the University of Cape Town (UCT) and Wawasan Open University.
This chapter forms part of a project activity toolkit, which is comprised of five documents outlining activities associated with each of the UCT Network Hub pillars of project management activity: networking, evaluation, communications, research capacity development, and curation and dissemination. It is hoped that these chapters will be of practical use to other projects attempting to integrate any of these aspects in their operational strategies.
This chapter focuses on the research capacity development activities undertaken in the ROER4D project, which were seen as crucial in terms of addressing the project objectives of building an empirical knowledge base on the use and impact of open educational resources (OER) in the Global South, developing the research capacity of Global South OER researchers and building a network of Global South OER scholars. It outlines the rationale behind and implementation of four central aspects of the research capacity development process, namely: research question harmonisation, concept clarification, developmental editing and open research approaches (incorporating open data).
Key insights gained in conducting research capacity development activities amongst participating researchers have led the UCT Network Hub to recommend a research capacity development model which has a cohesive trajectory from conceptualisation to conducting research and, ultimately, publishing and profiling the findings of that work.