cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Efficient numerical integration of neutrino oscillations in matter
Creators: name: Casas, Fernando
name: Oteo, Jose Angel
name: D'Olivo, Juan Carlos
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Physics (physics.comp-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 65L05, 65L20

description: A special purpose solver, based on the Magnus expansion, well suited for the integration of the linear three neutrino oscillations equations in matter is proposed. The computations are speeded up to two orders of magnitude with respect to a general numerical integrator, a fact that could smooth the way for massive numerical integration concomitant with experimental data analyses. Detailed illustrations about numerical procedure and computer time costs are provided.
description: 10 pages, 3 figures
Editorial: The lack of teaching staff and new teacher training entrants in the industrial-technical subjects at vocational colleges
Creators: name: Zinn, Bernd
Publisher: name: Journal of Technical Education (JOTED)
Year: 2018

description: This special edition of the Journal of Technical Education entitled "The lack of teaching staff and new teacher training entrants in the industrial-technical subjects at vocational colleges" examines a topic that now runs like a golden thread through the debate on vocational education and research into teacher training in the field of occupational education. The issue of the lack of teaching staff at vocational colleges is consistently the focus of public discussion and papers published within the academic community. This debate on the lack of teaching staff at industrial vocational colleges is currently highly topical again in terms of educational policy, too!
description: Journal of Technical Education (JOTED), Bd. 6 Nr. 2 (2018): Journal of Technical Education (JOTED) - Sonderausgabe
Priority and collision avoidance system for traffic lights
Creators: name: Santos-González, Iván
name: Caballero-Gil, Pino
name: Rivero-García, Alexandra
name: Caballero-Gil, Cándido
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In this paper, a collision avoidance system is presented to detect red light running and warn nearby vehicles and pedestrians in real time in order to prevent possible accidents. No complex infrastructure-based solution such as those based on radars or cameras is here required. Instead, a new solution based on smartphones carried by drivers and pedestrians is proposed so that it is the device inside the vehicle violating a traffic light, the one that self-reports the offence in order to generate alerts and warn nearby vehicles and pedestrians to prevent accidents. The proposal could also be used by road authorities to collect data on traffic lights that are most frequently violated in order to define an action plan to investigate causes and look for solutions. It includes a classifier for learning and estimating driver behaviour based on collected data, which is used to predict whether he/she is about to run a red light or detect whether that has already happened. In the first case, the system broadcasts warnings directly to close vehicles and pedestrians through Wi-Fi, while in the second case, the proposal warns vehicles and pedestrians in the neighbourhood through a server. The solution also includes a prioritization system based on changing traffic lights at intersections according to the needs and characteristics of the traffic at all times, giving the top priority to emergency vehicles. Furthermore, the proposal involves the use of cryptographic schemes to protect authenticity and integrity of messages sent from traffic lights, smartphones and servers, and privacy and anonymity to promote the use of the system. A beta version with some parts of the proposal has been implemented and the obtained results are promising.
Cubulable Kähler groups
Creators: name: Delzant, Thomas
name: Py, Pierre
Publisher: name: arXiv
Year: 2016
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Geometry (math.AG)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We prove that a Kähler group which is cubulable, i.e. which acts properly discontinuously and cocompactly on a CAT(0) cubical complex, has a finite index subgroup isomorphic to a direct product of surface groups, possibly with a free Abelian factor. Similarly, we prove that a closed aspherical Kähler manifold with a cubulable fundamental group has a finite cover which is biholomorphic to a topologically trivial principal torus bundle over a product of Riemann surfaces. Along the way, we prove a factorization result for essential actions of Kähler groups on irreducible, locally finite CAT(0) cubical complexes, under the assumption that there is no fixed point in the visual boundary.
QuickSkill: Novice Skill Estimation in Online Multiplayer Games
Creators: name: Zhang, Chaoyun
name: Wang, Kai
name: Chen, Hao
name: Fan, Ge
name: Li, Yingjie
name: Wu, Lifang
name: Zheng, Bingchao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Matchmaking systems are vital for creating fair matches in online multiplayer games, which directly affects players' satisfactions and game experience. Most of the matchmaking systems largely rely on precise estimation of players' game skills to construct equitable games. However, the skill rating of a novice is usually inaccurate, as current matchmaking rating algorithms require considerable amount of games for learning the true skill of a new player. Using these unreliable skill scores at early stages for matchmaking usually leads to disparities in terms of team performance, which causes negative game experience. This is known as the ''cold-start'' problem for matchmaking rating algorithms. To overcome this conundrum, this paper proposes QuickSKill, a deep learning based novice skill estimation framework to quickly probe abilities of new players in online multiplayer games. QuickSKill extracts sequential performance features from initial few games of a player to predict his/her future skill rating with a dedicated neural network, thus delivering accurate skill estimation at the player's early game stage. By employing QuickSKill for matchmaking, game fairness can be dramatically improved in the initial cold-start period. We conduct experiments in a popular mobile multiplayer game in both offline and online scenarios. Results obtained with two real-world anonymized gaming datasets demonstrate that proposed QuickSKill delivers precise estimation of game skills for novices, leading to significantly lower team skill disparities and better player game experience. To the best of our knowledge, proposed QuickSKill is the first framework that tackles the cold-start problem for traditional skill rating algorithms.
description: Accepted by CIKM 2022 Applied Research Track
Estimating the concentration of gold nanoparticles incorporated on Natural Rubber membranes using Multi-Level Starlet Optimal Segmentation
Creators: name: de Siqueira, Alexandre Fioravante
name: Cabrera, Flávio Camargo
name: Pagamisse, Aylton
name: Job, Aldo Eloizo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This study consolidates Multi-Level Starlet Segmentation (MLSS) and Multi-Level Starlet Optimal Segmentation (MLSOS), techniques for photomicrograph segmentation that use starlet wavelet detail levels to separate areas of interest in an input image. Several segmentation levels can be obtained using Multi-Level Starlet Segmentation; after that, Matthews correlation coefficient (MCC) is used to choose an optimal segmentation level, giving rise to Multi-Level Starlet Optimal Segmentation. In this paper, MLSOS is employed to estimate the concentration of gold nanoparticles with diameter around 47 nm, reducted on natural rubber membranes. These samples were used on the construction of SERS/SERRS substrates and in the study of natural rubber membranes with incorporated gold nanoparticles influence on Leishmania braziliensis physiology. Precision, recall and accuracy are used to evaluate the segmentation performance, and MLSOS presents accuracy greater than 88% for this application.
description: 22 pages, 8 figures
Editorial: Lehrkräfte- und Nachwuchsmangel in den gewerblich-technischen Fächern des Lehramts an berufsbildenden Schulen
Creators: name: Zinn, Bernd
Publisher: name: Journal of Technical Education (JOTED)
Year: 2018

description: Die vorliegende Sonderausgabe des Journals of Technical Education mit dem Titel „Lehrkräfte- und Nachwuchsmangel in den gewerblich-technischen Fächern des Lehramts an berufsbildenden Schulen“ beschäftigt sich mit einer Problematik, die sich mittlerweile wie ein roter Faden durch den Diskurs der beruflichen Bildung und der berufspädagogischen Lehrerbildungsforschung zieht. Die Thematik des Lehrkräftemangels an beruflichen Schulen kommt immer wieder in den Fokus der öffentlichen Diskussion und der wissenschaftlichen Community. Derzeit ist die Debatte um fehlende Lehrerinnen und Lehrern an berufsbildenden Schulen insbesondere auch bildungspolitisch hochaktuell!
description: Journal of Technical Education (JOTED), Bd. 6 Nr. 2 (2018): Journal of Technical Education (JOTED) - Sonderausgabe
The effect of stircasting on the microstructure and properties of aluminium-silicon casting alloys
Creators: name: bin Hashim., Helme
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Massive two-column bosonic fields in the frame-like formalism
Creators: name: Zinoviev, Yu. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we develop the frame-like gauge invariant formulation for the massive two-column bosonic fields in (anti) de Sitter space-times. We begin with the partially massless cases in AdS and dS and then we combine these results into the general massive theory. Separate section is devoted to the special case where both columns have equal number of indices.
description: 18+1 pages, 6 LaTeX figures
Soliton resolution for equivariant wave maps on a wormhole: I
Creators: name: Rodriguez, Casey
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper, we initiate the study of finite energy equivariant wave maps from the (1+3)-dimensional spacetime $\mathbb R \times (\mathbb R \times \mathbb{S}^2) \rightarrow \mathbb{S}^3$ where the metric on $\mathbb R \times (\mathbb R \times \mathbb{S}^2)$ is given by ds^2 = -dt^2 + dr^2 + (r^2 + 1) \left ( d θ^2 + \sin^2 θd φ^2 \right ), \quad t,r \in \mathbb{R}, (θ,φ) \in \mathbb{S}^2. The constant time slices are each given by the Riemannian manifold $\mathcal M := \mathbb R \times \mathbb{S}^2$ with metric ds^2 = dr^2 + (r^2 + 1) \left ( d θ^2 + \sin^2 θd φ^2 \right ). The Riemannian manifold $\mathcal M$ contains two asymptotically Euclidean ends at $r \rightarrow \pm \infty$ that are connected by a spherical throat of area $4 π^2$ at $r = 0$. The spacetime $\mathbb R \times \mathcal M$ is a simple example of a wormhole geometry in general relativity. In this work we will consider 1--equivariant or corotational wave maps. Each corotational wave map can be indexed by its topological degree $n$. For each $n$, there exists a unique energy minimizing corotational harmonic map $Q_{n} : \mathcal M \rightarrow \mathbb{S}^3$ of degree $n$. In this work, we show that modulo a free radiation term, every corotational wave map of degree $n$ converges strongly to $Q_{n}$. This resolves a conjecture made by Bizon and Kahl in the corotational case.
description: 64 pages
Functional Connectivity, Risk Assessment, and Emotion Recognition
Creators: name: Niedermeyer, Alfonse
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: empathy + risk assessment + CPM + connectome-based predictive modeling + frontosubcortical + functional connectivity + fMRI + 7T fMRI + HCP + gambling + emotion recognition

description: The present paper discusses two experimental designs exploring the relationship between risk assessment and emotion recognition. The first uses publicly available data from the Human Connectome Database preprocessed and parcellated according to the Shen-268 atlas. The proposed second design would use novel data to refine and contextualize the results from the first. The paper proposes an integrative approach to models for human empathy relying on frontosubcortical and motor connectivity. It opens with an exploration of the literature on automatic and cognitive models for empathy. Specific attention is devoted to the overlapping functional networks involved and to the evidence that both pathways have emerged from a need for performance under threat. Both designs are intended to reinforce the argument that functional pathways involved in risk assessment offer a link between automatic and cognitive emotion recognition pathways. For both paradigms, connectome-based predictive modelling is used to predict scores on the HCP gambling task and the HCP emotion recognition task from 7T fMRI data. Separate analyses are conducted for whole-brain and frontosubcortical activity. It is hypothesized that significant nodewise correlations can be used to predict behavior for both tasks in all conducted analyses (p ≤ .01). In the conducted design, the model did not significantly predict participant behavior on the gambling task or the emotion recognition task. Potential confounds and future directions for empathy research are discussed.
The right time to learn: mechanisms and optimization of spaced learning
Creators: name: Smolen, Paul
name: Zhang, Yili
name: Byrne, John H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: For many types of learning, spaced training that involves repeated long inter-trial intervals (ITIs) leads to more robust memory formation than does massed training that involves short or no intervals. Several cognitive theories have been proposed to explain this superiority, but only recently has data begun to delineate the underlying cellular and molecular mechanisms of spaced training. We review these theories and data here. Computational models of the implicated signaling cascades have predicted that spaced training with irregular ITIs can enhance learning. This strategy of using models to predict optimal spaced training protocols, combined with pharmacotherapy, suggests novel ways to rescue impaired synaptic plasticity and learning.
description: 34 pages, 5 figures
A system dynamics model of two Australian industries
Creators: name: Iovenitti, Pio Gioacchino.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Going beyond k.p theory: a general method for obtaining effective Hamiltonians in both high and low symmetry situations
Creators: name: Ray, N.
name: Rost, F.
name: Weckbecker, D.
name: Vogl, M.
name: Sharma, S.
name: Gupta, R.
name: Pankratov, O.
name: Shallcross, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We provide a method for the generation of effective continuum Hamiltonians that goes beyond the well known k.p method in being equally effective in both high, and low (or no) symmetry situations. Our approach is based on a surprising exact map of the two-centre tight-binding method onto a compact continuum Hamiltonian, with a precise condition given for the hermiticity of the latter object. We apply this method to a broad range of low dimensional systems of both high and low symmetry: graphene, graphdiyne, γ-graphyne, 6,6,12-graphyne, twist bilayer graphene, and partial dislocation networks in Bernal stacked bilayer graphene. For the single layer systems the method yields Hamiltonians for the ideal lattices, as well as a systematic theory for corrections due to deformation. In the case of bilayer graphene we provide a compact expression for an effective field capable of describing any stacking deformation of the bilayer; twist bilayer graphene, as well as the partial dislocation network in AB stacked graphene, emerge as special cases of this field. For the latter system we find (i) charge pooling on the mosaic of AB and AC segments near the Dirac point and (ii) localized current carrying states on the partials with the current density characterized by both intralayer and interlayer components.
Rocket Lab Mission to Venus
Creators: name: French, Richard
name: Mandy, Christophe
name: Hunter, Richard
name: Mosleh, Ehson
name: Sinclair, Doug
name: Beck, Peter
name: Seager, Sara
name: Petkowski, Janusz J.
name: Carr, Christopher E.
name: Grinspoon, David H.
name: Baumgardner, Darrel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Regular, low-cost Decadal-class science missions to planetary destinations will be enabled by high-ΔV small spacecraft, such as the high-energy Photon, and small launch vehicles, such as Electron, to support expanding opportunities for scientists and to increase the rate of science return. The Rocket Lab mission to Venus is a small direct entry probe planned for baseline launch in May 2023 with accommodation for a single ~1 kg instrument. A backup launch window is available in January 2025. The probe mission will spend about 5 min in the Venus cloud layers at 48-60 km altitude above the surface and collect in situ measurements. We have chosen a low-mass, low-cost autofluorescing nephelometer to search for organic molecules in the cloud particles and constrain the particle composition.
description: Based on the text of the Venus Life Finder Mission Study report (arXiv:2112.05153). Published in Aerospace as a part of the Special Issue "The Search for Signs of Life on Venus: Science Objectives and Mission Designs" (https://www.mdpi.com/journal/aerospace/special_issues/Search_Life_Venus_Science_Objectives_Mission_Designs). arXiv admin note: substantial text overlap with arXiv:2112.05153
Band gap modulation in polythiophene and polypyrrole-based systems
Creators: name: Kaloni, T. P.
name: Schreckenbach, G.
name: Freund, M. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this paper, the structural and electronic properties of polythiophene and polyprrrole-based systems have been investigated using first-principles calculations both in periodic and oligomer forms. Of particular interest is the band gap modulation through substitutions and bilayer formation. Specifically, S has been substituted by Se and Te in polythiophene, leading to polyseleophene and polytellurophene, respectively, and N has been substituted by P and As in polypyrrole. The values obtained of the binding energy suggest that all the systems studied can be realized experimentally. Stacking (bilayer formation) of pure polythiophene, polypyrrole and their derivatives leads to linear suppression of the band gap or HOMO-LUMO gap as a function of the stacking. Mixed bilayers, including one formed from polythiophene on top of polypyrrole, have also been considered. Overall, a wide range of band gaps can be achieved through substitutions and stacking. Hybrid (B3LYP) calculations also suggest the same trend in the band gap as PBE calculations. Trends in the binding energy are similar for both periodic and molecular calculations. In addition, the $Γ$-point phonon calculation are performed in order to check the stability of selected systems.
description: 22 pages, 13 figures, and 4 Tables
Theory and design of single phase shaded pole induction motors
Creators: name: Halliday, William Muir.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Entwicklung eines Instruments zur Erfassung der Wechselwirkung von Lernortkooperation und Ausbildungsqualität
Creators: name: Wenner, Timo
Publisher: name: Journal of Technical Education (JOTED)
Year: 2018

description: Zusammenfassung Dieser Beitrag befasst sich mit der theoriegeleiteten Erstellung eines Erhebungsinstruments zur Erfassung von Ausbildungsqualität und Lernortkooperation in der dualen Berufsausbildung. Hierzu wurden 1329 Auszubildende mittels eines standardisierten Fragebogens zu ihrer Wahrnehmung der Input-, Prozess- und Outputqualität sowie der Lernortkooperation in ihrer Ausbildung befragt. Diese Daten wurden mithilfe einer explorativen Faktorenanalyse in ihren Dimensionen reduziert, sodass vier Faktoren übrigblieben. Diese Faktoren beschreiben betriebliche bzw. schulische Qualitätsindikatoren, Indikatoren zur Lernortkooperation und erwarteten Outputqualität. In einem späteren Projekt soll dies zur Überprüfung des Zusammenhangs von Lernortkooperation und Ausbildungsqualität genutzt werden. Schlüsselwörter: Lernortkooperation, Ausbildungsqualität, explorative Faktorenanalyse, duale Berufsausbildung, Auszubildendenbefragung __________ Development of an instrument to measure the interdependency between the cooperation of learning venues and quality of vocational training in the awareness of the trainees Abstract This article is concerned with the generation of a survey instrument for the capture of the quality of education and the cooperation of learning venues in the technical-industrial section of vocational training. Therefore 1329 trainees were interviewed about their awareness of input-, process- and output quality as well the cooperation between their learning venues. The collected data were analysed using an explorative factor analysis. After the analyzation four factors remained. Those coefficients describe scholastic and operational quality indicators, indicators for the cooperation between the learning places and the expected output quality. Later on, this project shall be used for the validation of a correlation between the cooperation of learning places and the quality of education. Keywords: cooperation of learning venues, quality of vocational training, explorative factor analysis, vocational education and training, trainee survey
description: Journal of Technical Education (JOTED), Bd. 6 Nr. 1 (2018): Journal of Technical Education (JOTED)
Star formation rates on global and cloud scales within the Galactic Centre
Creators: name: Barnes, Ashley Thomas
name: Longmore, Steven
name: Battersby, Cara
name: Bally, John
name: Kruijssen, J. M. Diederik
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The environment within the inner few hundred parsecs of the Milky Way, known as the "Central Molecular Zone" (CMZ), harbours densities and pressures orders of magnitude higher than the Galactic Disc; akin to that at the peak of cosmic star formation (Kruijssen & Longmore 2013). Previous studies have shown that current theoretical star-formation models under-predict the observed level of star-formation (SF) in the CMZ by an order of magnitude given the large reservoir of dense gas it contains. Here we explore potential reasons for this apparent dearth of star formation activity.
description: Proceedings IAU Symposium No. 322, The Multi-Messenger Astrophysics of the Galactic Centre, 2016, S. Longmore, G. Bicknell & R. Crocker, eds, 2 pages, 1 figure
Stochastic Gravitational-Wave Background due to Primordial Binary Black Hole Mergers
Creators: name: Mandic, Vuk
name: Bird, Simeon
name: Cholis, Ilias
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recent Advanced LIGO detections of binary black hole mergers have prompted multiple studies investigating the possibility that the heavy GW150914 binary system was of primordial origin, and hence could be evidence for dark matter in the form of black holes. We compute the stochastic background arising from the incoherent superposition of such primordial binary black hole systems in the universe and compare it to the similar background spectrum due to binary black hole systems of stellar origin. We investigate the possibility of detecting this background with future gravitational wave detectors, and discuss the possibility of using the stochastic gravitational-wave background measurement to constrain the dark matter component in the form of black holes.
description: 6 pages, 5 figures
Eignet sich die logfilegenerierte Explorationsvollständigkeit als Prozessindikator für den Wissenserwerb im problemlösenden Umgang mit technischen Alltagsgeräten?
Creators: name: Stemmann, Jennifer
name: Lang, Martin
Publisher: name: Journal of Technical Education (JOTED)
Year: 2018

description: Zusammenfassung Das Konstrukt technischer Problemlösekompetenz wird als ein Sammelbegriff für die Dimensionen Wissenserwerb und Wissensanwendung aufgefasst. Die im Umgang mit technischen Geräten als Systemexploration bezeichnete Dimension für den Wissenserwerb hat einen Einfluss auf die anschließende Wissensanwendung (Systemsteuerung). Bisherige Forschungsarbeiten haben den Wissenserwerb mithilfe zusätzlicher Tests erfasst, in denen vor allem deklaratives Wissen abgefragt wird. Mit der Intention die damit verbundenen Nachteile (u.a. Testzeitverlängerung, Beeinflussung des Testverhaltens) zu überwinden, widmet sich dieser Beitrag der Explorationsvollständigkeit als logfilegenerierter Indikator für den Wissenserwerb. Die Ergebnisse zeigen einen hohen Zusammenhang zwischen diesem Indikator und der Leistung in der Systemsteuerung. Schlüsselwörter: Problemlösen, Techniknutzung, Alltagsgeräte, Logfiles, Wissenserwerb ___________ Is logfile-generated exploration completeness suitable as a process indicator for knowledge acquisition in handling of everyday technical devices? Abstract Technical problem solving is a two-dimensional construct consists of the dimensions knowledge acquisition and knowledge application. In handling technical devices system exploration (knowledge acquisition) influences the following system control (knowledge application). Previous research uses additional tests to measure the existing knowledge after system exploration. With the intention to overcome the associated disadvantages (i.e. test time extension, influencing the test behaviour), this paper is dedicated to exploration completeness as a logfile-generated indicator of knowledge acquisition. The results show a high correlation between exploration completeness and system control. Keywords: problem solving, utilization of technics, everyday devices, logfiles, knowledge acquisition
description: Journal of Technical Education (JOTED), Bd. 6 Nr. 1 (2018): Journal of Technical Education (JOTED)
A Reanalysis of High Resolution XMM-Newton Data of V2491 Cyg Using Collisionally Ionized Hot Absorber Models
Creators: name: Balman, Solen
name: Gamsizkan, Cigdem
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a reanalysis of XMM-Newton Reflection Grating Spectrometer data of the classical nova V2491 Cyg obtained from two different pointings, 40 d and 50 d after outburst utilizing the SRON software SPEX version 2.05.04. We aim to model absorption components using hot collisionally ionized absorber models along with interstellar absorption (of gas and dust origin separately). We find blackbody temperatures in a range 61-91 eV for the continuum yielding a white dwarf mass of 1.15-1.3 M_sun. We derive two different hot absorber components with blueshifts yielding 2900-3800 km/s for the first (day 40) and 2600-3600 km/s for the second observation 50 days after outburst consistent with ejecta/wind speeds. The two collisionally ionized hot absorption components have temperatures kT_1 =1.0-3.6 keV and kT_2 =0.4-0.87 keV with rms velocities (sigma_v) 872 km/s and 56 km/s. These are consistent with shock temperatures in the X-ray wavelengths. V2491 Cyg shows signature of H-burning with underabundant carbon C/C_sun=0.3-0.5, and enhanced nitrogen N/N_sun=5-7 and oxygen O/O_sun=16-43. We find the equivalent hydrogen column density of the hot collisionally ionized absorbers in a range (0.6-18.0)x10^{23} cm^{-2} and (2.0-5.3)x10^{23} cm^{-2} on days 40 and 50 after outburst, respectively. Our fits yield the most adequate redchisq (range 1.8-2.9) up-to-date obtained for the modeling of high resolution X-ray data of V2491 Cyg. An additional photoionized absorber (third intrinsic absorber component) originating in the shell/ejecta improves the model fits with redchisq in a range 1.7-2.5, but shows only (1-0.1)% of the absorption by the collisionaly-ionized hot gas. Our analysis reveals a second blackbody component on day 50 with effective temperature 120-131 eV and effective radius about 10% of the WD which may indicate the onset of magnetic accretion.
description: 12 pages, 7 figures, and 2 Tables, accepted for publication in A&A (main Journal). arXiv admin note: text overlap with arXiv:astro-ph/0410385 by other authors
Kompetenzdefinition und Curriculumsentwicklung durch Anwendung von EU-Instrumenten
Creators: name: Meex, Birgitta
name: Straub, Daniela
name: Closs, Sissi
name: Al., Et
Publisher: name: Journal of Technical Education (JOTED)
Year: 2018

description: Zusammenfassung Hintergrund und Anlass des in diesem Beitrag beschriebenen Erasmus-Plus-Projekts TecCOMFrame ist die europäische Situation bei der Aus- und Weiterbildung im Bereich Technische Kommunikation. Zu den wichtigsten Projektergebnissen zählen die Entwicklung eines akademischen Kompetenzrahmens, Prototyp-Curricula für Bachelor- und Masterstudiengänge und für Vertiefungsrichtungen sowie eine internationale Berufswebseite zur Projektdissemination. In diesem Beitrag wird an Hand des Demingkreises mit den Phasen „Plan - Do - Check - Act“ gezeigt, wie zur Projektdurchführung, Ergebniserarbeitung und Qualitätssicherung systematisch vorhandene EU-Instrumente eingesetzt und so strategische Ziele der EU im Bereich der Bildung adressiert und umgesetzt wurden. Außerdem sollen die Projektergebnisse durch die Übertragbarkeit und Wiederverwendbarkeit der Methodik nachhaltig bei vergleichbaren Aufgabenstellungen genutzt werden können. Schlüsselwörter: Curriculumsentwicklung, Bologna-Instrumente, Technische Kommunikation, Demingkreis, Projekt TecCOMFrame __________ Defining competence and developing curricula using EU instruments Abstract The current European situation in the field of training and further education in Technical Communication provides the background for the Erasmus-Plus project TecCOMFrame described in this contribution. The project aims at developing an academic competence framework, prototype curricula for bachelor’s and master’s programs as well as specialization streams based on that framework, and an international website for the profession intended for project dissemination. In this contribution, it will be shown by means of the Deming cycle comprising the phases „Plan - Do - Check - Act“, how the project execution, delivery of results and quality assurance are based on existing EU instruments. It is also exemplary illustrated how by doing so strategic goals of the EU in the area of education are addressed and implemented. Moreover, in view of the transferability and reusability of the method, the project results are intended to be used in a sustainable way for similar assignments. Keywords: Curricula Development, Bologna Instruments, Technical Communication, Deming Circle, TecCOMFrame Project
description: Journal of Technical Education (JOTED), Bd. 6 Nr. 1 (2018): Journal of Technical Education (JOTED)
Hegemonic structure of basic, clinical and patented knowledge on Ebola research: a US army reductionist initiative
Creators: name: Fajardo-Ortiz, David
name: Ortega-Sanchez-de-Tagle, Josw
name: Castano, Victor-M
Publisher: name: arXiv
Year: 2016
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Background: In this paper, we present an approach to understand how the basic, clinical and patent knowledge on Ebola is organized and intercommunicated and what leading factor could be shaping the evolution of the knowledge translation process for this disease. Methodology: A combination of citation network analysis; analysis of Medical heading Subject (MeSH) and Gene Ontology (GO) terms, and quantitative content analysis for patents and scientific literature, aimed to map the organization of Ebola research was carried out. Results: We found six putative research fronts (i.e. clusters of high interconnected papers). Three research fronts are basic research on Ebola virus structural proteins: glycoprotein, VP40 and VP35, respectively. There is a fourth research front of basic research papers on pathogenesis, which is the organizing hub of Ebola research. A fifth research front is pre-clinical research focused on vaccines and glycoproteins. Finally, a clinical-epidemiology research front related to the disease outbreaks was identified. The network structure of patent families shows that the dominant design is the use of Ebola virus proteins as targets of vaccines and other immunological treatments. Therefore, patents network organization resembles the organization of the scientific literature. Specifically, the knowledge on Ebola would flow from higher (clinical-epidemiology) to intermediated (cellular-tissular pathogenesis) to lower (molecular interactions) levels of organization. Conclusion: Our results suggest a strong reductionist approach for Ebola research probably influenced by the lethality of the disease. On the other hand, the ownership profile of the patent families network and the main researches relationship with the United State Army suggest a strong involvement of this military institution in Ebola research.
Die Kooperation zwischen Fach und Fachdidaktik in der gewerblich-technischen Lehrerbildung im Studiengang Lehramt an Beruflichen Schulen (LAB) in Hamburg
Creators: name: Kuhlmeier, Werner
name: Reichwein, Wilko
Publisher: name: Journal of Technical Education (JOTED)
Year: 2018

description: Zusammenfassung Die Berufsschullehrerausbildung in den gewerblich-technischen Fachrichtungen ist in Hamburg auf zwei Universitäten verteilt. Je nach Fachrichtung ist die Integration lehramtsbezogener Inhalte im fachwissenschaftlichen Studium unterschiedlich stark ausgeprägt. Außerdem ist die Vernetzung zwischen fachwissenschaftlicher und fachrichtungsdidaktischer Ausbildung bisher nur eingeschränkt realisiert. Der vorliegende Beitrag beschreibt die im Projekt durchgeführten Aktivitäten zur Verbesserung der Vernetzung von Fachwissenschaft und Fachrichtungsdidaktik. Dabei werden detailliert die durchgeführten Erhebungen erläutert und auch die sich während der Projektphase abzeichnenden Herausforderungen beschrieben. Ein besonderer Fokus wird auf die Darstellung der bisherigen und geplanten Interventionen gelegt. Schlüsselwörter: Qualitätsoffensive Lehrerbildung, Fachwissenschaft, gewerblich-technische Fachrichtungen, Fachdidaktik, Kooperation ___________ The cooperation between subject and subject didactics in the industrial and technical teacher training in the study program Lehramt at Vocational Schools (LAB) in Hamburg Abstract The teaching-training for vocational school teachers in technical subjects is distributed in two universities in Hamburg. Depending on the subject, the integration of teaching-related content in the course of studies in science is different. In addition, the networking between professional science and subject didactics has so far only been implemented to a limited extent. This paper describes the activities carried out in the project to improve the networking of professional science and subject didactics. The detailed surveys are explained in detail and the challenges emerging during the project phase are described. A special focus will be placed on presenting the current and planned interventions. Keywords: teacher education quality campaign, subject didactics, vocational and technical subjects, professional science, cooperation
description: Journal of Technical Education (JOTED), Bd. 6 Nr. 1 (2018): Journal of Technical Education (JOTED)
Tunnelling phenomenon near an apparent horizon in two-dimensional dilaton gravity
Creators: name: Cao, Li-Ming
name: Jiang, Xiao-Zhu
name: Peng, Yuxuan
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Based on the definition of the apparent horizon in a general two-dimensional dilaton gravity theory, we analyze the tunnelling phenomenon of the apparent horizon by using Hamilton-Jacobi method. In this theory the definition of the horizon is very different from those in higher-dimensional gravity theories. The spectrum of the radiation is obtained and the temperature of the radiation is read out from this spectrum and it satisfies the usual relationship with the surface gravity. Besides, the calculation with Parikh's null geodesic method for a simple example conforms to our result in general stationary cases.
description: revtex4, 8 pages, no figure
7. Ulusal Açık Bilim Konferansı ve OpenAIRE Çalıştayı Açık Lisans Grup Çalışması
Creators: name: Orcun Madran
Publisher: name: Zenodo
Year: 2019
Subjects: Açık Lisanslar, Açık Bilim, Açık Erişim, Açık Eğitim, Open Science Mooc, Creative Commons

description: 7. Ulusal Açık Bilim Konferansı ve OpenAIRE Çalıştayı kapsamında gerçekleştirilen Açık Lisanslar grup çalışması sunumları.
MPEC 2024-B167 : 2024 BS3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 BS3

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Eine deskriptive Bestandsaufnahme von Entrepreneurship Education in MINT-Studiengängen in sechs Bundesländern
Creators: name: Gossel, Britta M.
name: Schleicher, Kathrin
name: Solf, Anja
name: Krauß, Maximilian
name: Weber, Christian
name: Will, Andreas
Publisher: name: Journal of Technical Education (JOTED)
Year: 2018

description: Zusammenfassung Während die Bedeutung des Lehrens und Lernens unternehmerischer Kompetenzen auch in MINT-Studiengängen von der Forschung intensiv diskutiert und politisch weithin gefordert wird, stellt sich die Frage, inwieweit Entrepreneurship Education tatsächlich in den jeweiligen Curricula verankert ist. Die vorliegende Arbeit liefert deshalb einen Überblick über den Status quo der curricularen Verankerung von Entrepreneurship Education am Beispiel der Hochschulen der sechs ostdeutschen Bundesländer einschließlich Berlin. Für alle 1361 MINT-Studiengänge an 58 Hochschulen wurde eine Dokumentenrecherche und -analyse von Studiengangdokumenten durchgeführt. Die Ergebnisse der Untersuchung zeigen eine geringe Verankerung von Entrepreneurship Education in den Curricula der MINT-Studiengänge mit indes auffälligen Unterschieden zwischen den Fächergruppen. Schlüsselwörter: Entrepreneurship Education, MINT, curriculare Verankerung ___________ A descriptive study of entrepreneurship education in STEM degree courses in six German Laender Abstract While the importance of teaching and learning entrepreneurial competencies also in STEM degree courses is intensively discussed in research and widely demanded politically, the question remains to what extent entrepreneurship education is part of the respective curricula. This study delivers an overview of the status quo of curricular anchoring of entrepreneurship education in STEM degree courses for the six East German Laender including Berlin. For a total of 1361 STEM degree courses from 58 East German higher education institutions, an in-depth search and analysis of course documents was conducted. The results show a slight anchoring of entrepreneurship education in the curricula of STEM degree courses. However, noticeable differences between the detailed fields of study can be observed. Keywords: entrepreneurship education, STEM, curricular anchoring
description: Journal of Technical Education (JOTED), Bd. 6 Nr. 1 (2018): Journal of Technical Education (JOTED)
Dismantling Complex Networks by a Neural Model Trained from Tiny Networks
Creators: name: Zhang, Jiazheng
name: Wang, Bang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Can we employ one neural model to efficiently dismantle many complex yet unique networks? This article provides an affirmative answer. Diverse real-world systems can be abstracted as complex networks each consisting of many functional nodes and edges. Percolation theory has indicated that removing only a few vital nodes can cause the collapse of whole network. However, finding the least number of such vital nodes is a rather challenging task for large networks due to its NP-hardness. Previous studies have proposed many centrality measures and heuristic algorithms to tackle this network dismantling (ND) problem. Different from theirs, this article tries to approach the ND task by designing a neural model which can be trained from tiny synthetic networks but will be applied for various real-world networks. It seems a discouraging mission at first sight, as network sizes and topologies are quite different across distinct real-world networks. Nonetheless, this article initiates insightful efforts of designing and training a neural influence ranking model (NIRM). Experiments on fifteen real-world networks validate its effectiveness for its mostly requiring fewer vital nodes to dismantle a network, compared with the state-of-the-art competitors. The key to its success lies in that our NIRM can efficiently encode both local structural and global topological signals for ranking nodes, in addition to our innovative labelling method in training dataset construction.
description: To be published at CIKM 2022 as a full paper
Mean-Payoff Games on Timed Automata
Creators: name: Guha, Shibashis
name: Jurdzinski, Marcin
name: S., Krishna
name: Trivedi, Ashutosh
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Formal Languages and Automata Theory (cs.FL)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: Mean-payoff games on timed automata are played on the infinite weighted graph of configurations of priced timed automata between two players, Player Min and Player Max, by moving a token along the states of the graph to form an infinite run. The goal of Player Min is to minimize the limit average weight of the run, while the goal of the Player Max is the opposite. Brenguier, Cassez, and Raskin recently studied a variation of these games and showed that mean-payoff games are undecidable for timed automata with five or more clocks. We refine this result by proving the undecidability of mean-payoff games with three clocks. On a positive side, we show the decidability of mean-payoff games on one-clock timed automata with binary price-rates. A key contribution of this paper is the application of dynamic programming based proof techniques applied in the context of average reward optimization on an uncountable state and action space.
description: 29 pages, unpublished manuscript, submitted to FSTTCS
Runge-Kutta discontinuous local evolution Galerkin methods for the shallow water equations on the cubed-sphere
Creators: name: Kuang, Yangyu
name: Wu, Kailiang
name: Tang, Huazhong
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The paper develops high order accurate Runge-Kutta discontinuous local evolution Galerkin (RKDLEG) methods on the cubed-sphere grid for the shallow water equations (SWEs). Instead of using the dimensional splitting method or solving one-dimensional Riemann problem in the direction normal to the cell interface, the RKDLEG methods are built on genuinely multi-dimensional approximate local evolution operator of the locally linearized SWEs on a sphere by considering all bicharacteristic directions. Several numerical experiments are conducted to demonstrate the accuracy and performance of our RKDLEG methods, in comparison to the Runge-Kutta discontinuous Galerkin method with Godunov's flux etc.
description: 46 pages,24 figures
Morse fluids in the immediate vicinity of the critical point: Calculation of thermodynamic coefficients
Creators: name: Pylyuk, I. V.
name: Kozlovskii, M. P.
name: Dobush, O. A.
name: Dufanets, M. V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The previously proposed approach for the microscopic description of the critical behavior of Morse liquids based on the cell fluid model is applied to the case where the parameters of the Morse interaction potential correspond to alkali metals (sodium and potassium). The critical temperatures, densities, and pressures obtained for sodium and potassium agree with the experimental results. The thermodynamic coefficients (isothermal compressibility, density fluctuations, and thermal expansion) of sodium are investigated in the supercritical temperature region. Numerical calculations of thermodynamic coefficients are performed close to the critical point, where carrying out theoretical and experimental research is challenging. The change in compressibility with increasing density at various temperature values is traced. The behavior of density fluctuations approaching the critical point is shown for different temperatures. The variation in the magnitude of the thermal expansion with increasing temperature for different pressure values is illustrated.
description: 14 pages, 6 figures, 1 table
Estimation of public transport trip interchange matrices
Creators: name: Bin Mohamed., Danial
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.