cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Computerized Tomography with Total Variation and with Shearlets
Creators: name: Garduño, Edgar
name: Herman, Gabor T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Medical Physics (physics.med-ph)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: To reduce the x-ray dose in computerized tomography (CT), many constrained optimization approaches have been proposed aiming at minimizing a regularizing function that measures lack of consistency with some prior knowledge about the object that is being imaged, subject to a (predetermined) level of consistency with the detected attenuation of x-rays. Proponents of the shearlet transform in the regularizing function claim that the reconstructions so obtained are better than those produced using TV for texture preservation (but may be worse for noise reduction). In this paper we report results related to this claim. In our reported experiments using simulated CT data collection of the head, reconstructions whose shearlet transform has a small $\ell_1$-norm are not more efficacious than reconstructions that have a small TV value. Our experiments for making such comparisons use the recently-developed superiorization methodology for both regularizing functions. Superiorization is an automated procedure for turning an iterative algorithm for producing images that satisfy a primary criterion (such as consistency with the observed measurements) into its superiorized version that will produce results that, according to the primary criterion are as good as those produced by the original algorithm, but in addition are superior to them according to a secondary (regularizing) criterion. The method presented for superiorization involving the $\ell_1$-norm of the shearlet transform is novel and is quite general: It can be used for any regularizing function that is defined as the $\ell_1$-norm of a transform specified by the application of a matrix. Because in the previous literature the split Bregman algorithm is used for similar purposes, a section is included comparing the results of the superiorization algorithm with the split Bregman algorithm.
description: 25 pages, 7 figures, Special Issue on Superiorization, Inverse Problems 2016
Plastic design of beams : optimization of segments and support location
Creators: name: Yong, T. C. .
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.
Status of experimental knowledge on the unbound nucleus $^{13}$Be
Creators: name: Jones, K. L.
name: Kovoor, J.
name: Kanungo, R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The structure of the unbound nucleus $^{13}$Be is important to understanding the Borromean, two-neutron halo nucleus $^{14}$Be. The experimental studies conducted over the last four decades are reviewed in the context of the beryllium chain of isotopes and some significant theoretical studies. One focus of this paper is the comparison of new data from a $^{12}$Be(d,p) reaction in inverse kinematics, which was analyzed using GEANT4 simulations and a Bayesian fitting procedure, with previous measurements. Two possible scenarios to explain the strength below 1~MeV above the neutron separation energy were proposed in that study: a single $p$-wave resonance, or a mixture of an $s$-wave virtual state with a weaker either $p$-wave or $d$-wave resonance. Comparisons of recent invariant mass and the (d,p) experiments show good agreement between the transfer measurement and the two most recent high-energy nucleon removal measurements.
description: 10 pages 2 figures
Well-posedness for a class of doubly nonlinear stochastic PDEs of divergence type
Creators: name: Scarpa, Luca
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60H15, 35R60, 35K55, 35D30, 47H05, 46N30

description: We prove well-posedness for doubly nonlinear parabolic stochastic partial differential equations of the form $dX_t-\text{div}\,γ(\nabla X_t)\,dt+β(X_t)\,dt\ni B(t,X_t)\,dW_t$, where $γ$ and $β$ are the two nonlinearities, assumed to be multivalued maximal monotone operators everywhere defined on $\mathbb{R}^d$ and $\mathbb{R}$ respectively, and $W$ is a cylindrical Wiener process. Using variational techniques, suitable uniform estimates (both pathwise and in expectation) and some compactness results, well-posedness is proved under the classical Leray-Lions conditions on $γ$ and with no restrictive smoothness or growth assumptions on $β$. The operator $B$ is assumed to be Hilbert-Schmidt and to satisfy some classical Lipschitz conditions in the second variable.
description: Key words and phrases: doubly nonlinear stochastic equation, divergence, variational approach, existence of solutions, continuous dependence, multiplicative noise
A study of costs of accidents by type in Victoria, 1978
Creators: name: James, George Henry Harold.
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.
Dark Matter searches in Dwarf Galaxies with the Southern Wide-field Gamma-ray Observatory
Creators: name: Andrade, Micael
name: Viana, Aion
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Dark matter is thought to make up most of the matter density of the Universe, yet its true nature remains uncertain. Among dark matter theories, Weakly Interacting Massive Particles (WIMPs) are a prominent candidate for dark matter because they can reproduce the observed abundance of dark matter in the universe. There are various methods for searching for WIMPs, one of which is indirect detection, which involves looking for the Standard Model particles produced by the decay or self-annihilation of dark matter particles. Within the mass range of GeV to PeV for the dark matter particle, this type of search can be conducted by detecting $γ$-rays in astrophysical objects with high concentrations of dark matter. Dwarf galaxies, although not the most dense, are excellent targets for this type of observation since they are dominated by dark matter, are relatively close to Earth, and have a low astrophysical background. In this work, the detectability of dark matter annihilation or decay signals from dwarf galaxies is predicted using the Southern Wide-field Gamma-ray Observatory (SWGO), a future $γ$-ray observatory that will be built in South America. This wide field-of-view survey instrument will be able to study many important dark matter targets in the Southern Hemisphere, and the combined observation of all targets will provide competitive, if not the best, limits for dark matter with masses in the range of hundreds of GeV to PeV.
description: Proc. ICRC 2023, 7 pages, 3 figures
Synthesis of complex oxides,optimized for the study of novel structural and magnetic properties
Creators: name: Admasu, Alemayehu Solomon
Publisher: name: No Publisher Supplied
Year: 2020

description: In this dissertation, we synthesize and characterize complex materials using old and new techniques and uncover new candidates for novel physical phenomena. From an experimental standpoint, in chapter 1, we will briefly introduce general methods of bulk crystal growth and then delve into recent advances in specific methods and complex materials including the Laser-diode heated floating zone (L-FZ) and use of chemical vapor transport and flux methods for the growth of large single crystals with physically interesting properties (e.g spin-ice) as well as less studied class of materials. Then in chapter 2, we review on the origin and interesting properties of the stuffed tridymite structure, with the specific case of the incongruently melting stuffed tridymite BaCoSiO4, which will motivate the study to reveal its structural properties following the first single crystal growth by L-FZ. In chapter 3, discuss the magnetic properties and low temperature neutron powder diffraction resolved magnetic structure enabling to further investigate possible magnetism induced anti-polar state. In chapter 4, we report on the first single crystal growth and magnetic ground state characterization of a previously less studied class of complex oxides RE2SrAl2O7 for RE = Nd,Sm,Gd,Tb,Dy and RE2SrSc2O7 for RE = Gd,Tb. In particular, we investigate the structure and magnetism in Tb2SrAl2O7 for new magnetic phenomena. In chapter 5, we conclude this dissertation with a summary of the results and future research directions, which will open access into the synthesis and characterization of previously unstudied class of materials such as refractory oxides.
El ser y estar ahí: Metempsicosis, Dasein, Erlebnis y Videojuegos.
Creators: name: Ponce Díaz, Romano
Publisher: name: Zenodo
Year: 2017
Subjects: videojuegos
literatura ergódica
narrativa audiovisual
estudios visuales

description: Aborda a los videojuegos desde la perspectiva Ergódica propuesta por Espen Aarseth y explora la relación entre "lo que se cuenta" y "lo que no se cuenta" y la manera en que el lector ergódico tiene la capacidad de generar su propia "verdad ficcional" y conocimiento a partir de la interpretación y el "Dasein" el acto de ser y estar ahí. Con el enfoque de que el hablar de videojuegos nos permite explorar los espacios fronterizos en que se vuelven difusos los roles entre receptor e intérprete: el intérprete se transmigra en participante y el participante es capaz de alterar la realidad en la que ha decidido integrarse. Los videojuegos permiten formas de apropiación y reconfiguración de la imagen por parte del receptor y, a la vez, la generación de nuevas imágenes mentales a partir de la interpretación. En los videojuegos se puede cambiar, configurar, reconfigurar, construir y deconstruir la realidad presentada en el relato; enfrentar retos, interrogantes y dilemas éticos; se adquiere la capacidad de elegir el desarrollo de los eventos, enfrentarse a la acción y sus consecuencias, con lo que se enriquece la experiencia, generando una erlebnis: el acto en que mediante la interpretación generamos conocimiento. Romano Ponce-Díaz.
Work-related stress in agricultural industry: a preliminary investigation
Creators: name: Colombo, Samuele
name: Galati, Giada
name: Venturino, Luca
name: Trovato, Francesco
name: Van Hoeserlande, Loic
name: Zanella, Claudia
Publisher: name: CERN IdeaSquare Journal of Experimental Innovation
Year: 2022

description: The present paper aims to investigate the social aspects of the agricultural industry, particularly those related to farmers. Starting with an analysis of the literature and official reports, the work describes the current problematic situation for the farmers' well-being. The research focuses on identifying the leading causes of their psychological stress through qualitative analyses made through personal interviews and questionnaires. Several reasons for stress were detected. The most prominent one was found to be harvest uncertainty. Finally, some solutions for actions to tackle the problem are discussed and suggested for further studies and applications.
description: CERN IdeaSquare Journal of Experimental Innovation, Articles in press
How Tycho Brahe's recordings in 1572 support SN 1572 as a type I(a) supernova
Creators: name: Hinse, Tobias Cornelius
name: Dorch, Bertil F.
name: Occhionero, Lars V. T.
name: Holck, Jakob P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The 450th anniversary of the discovery of the SN 1572 supernova event was celebrated in 2022. A closer look at the historical development of the field of supernova astronomy reveals the scientific importance of Tycho Brahe's 1572 observations of this "new star". In their quest to learn more about the new type of stellar explosion and subsequent evolution, the initial protagonists in this field (Baader and Zwicky among others) gradually turned their attention to the final remnant state of these supernova events. Since the remnant object thought to be associated with the extragalactic supernova event was found to be very dim, the focus quickly shifted toward nearby galactic events. It is at this point where Tycho Brahe's observations played an important and often overlooked role in the context of the development of stellar evolution as a scientific field. Tycho Brahe's meticulous and detailed recordings of the change in brightness of the new star not only allowed modern astronomers to classify SN 1572 as a supernova event but also helped them pinpoint the exact astrometric location of SN 1572. These findings helped to empirically link extragalactic supernova events to nearby past supernova remnants in the Milky Way. This enabled subsequent observations allowing further characterization. Transforming the historical recordings to a standardized photometric system also allowed the classification of SN 1572 as a type I supernova event.
description: 20 pages, 13 figures, accepted, Frontiers in Astronomy and Space Sciences
On the generalized associativity equation
Creators: name: Marichal, Jean-Luc
name: Teheux, Bruno
Publisher: name: arXiv
Year: 2016
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 39B52

description: The so-called generalized associativity functional equation G(J(x,y),z) = H(x,K(y,z)) has been investigated under various assumptions, for instance when the unknown functions G, H, J, and K are real, continuous, and strictly monotonic in each variable. In this note we investigate the following related problem: given the functions J and K, find every function F that can be written in the form F(x,y,z) = G(J(x,y),z) = H(x,K(y,z)) for some functions G and H. We show how this problem can be solved when any of the inner functions J and K has the same range as one of its sections.
Trascendiendo la intención autoral: la apropiación, el bootleg y la emulación como acciones de preservación clandestina y gemelidad de piezas artísticas primigenias
Creators: name: Ponce Díaz, Romano
name: Chamorro Escalante, Jorge Arturo
Publisher: name: Zenodo
Year: 2019
Subjects: visual studies
bootleg
Jazz
Roentgenizda

description: Desde la perspectiva transdisciplinar que nos proporcionan los estudios visuales, en el presente texto, realizará la exploración del fenómeno cultural del bootleg, como preservador clandestino del legado cultural, centrando la atención en los Roentgenizda, discos bootleg construidos con placas de rayos X, durante el periodo de control cultural del Stalinismo, en la Unión Soviética de las décadas de 1940 a 1960.
Time resolved heat exchange in driven quantum systems
Creators: name: Ludovico, Maria Florencia
name: Lim, Jong Soo
name: Moskalets, Michael
name: Arrachea, Liliana
name: Sanchez, David
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study time-dependent heat transport in systems composed of a resonant level periodically forced with an external power source and coupled to a fermionic continuum. This simple model contains the basic ingredients to understand time resolved energy exchange in quantum capacitors that behave as single particle emitters. We analyse the behaviour of the dynamic heat current for driving frequencies within the non-adiabatic regime, showing that it does not obey a Joule dissipation law.
description: 8 pages, 2 figures, 27th International Conference on Low Temperature Physics (LT27)
A rummage through some of the issues that impact visual art education in Australia
Creators: name: Selkrig, Mark
Publisher: name: University of Melbourne
Year: 2022
Subjects: Creative arts, media and communication curriculum and pedagogy

description: This site has been developed to outline and share the findings of a significant research project which explored a range of issues that impact the provision of Visual Art Education in Australia. The project occurred in 2017 and was titled: A Rummage Through Art Education in Australia.
Exact solution to integrable open multi-species SSEP and macroscopic fluctuation theory
Creators: name: Vanicat, Matthieu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We introduce a multi-species generalization of the symmetric simple exclusion process with open boundaries. This model possesses the property of being integrable and appears as physically relevant because the boundary conditions can be interpreted as the interaction with particles reservoirs with fixed densities of each species. The system is driven out-of-equilibrium by these reservoirs. The steady state is analytically computed in a matrix product form. This algebraic structure allows us to obtain exact expressions for the mean particle currents and for the one and two-point correlation functions. An additivity principle is also derived from the matrix ansatz and permits the computation of the large deviation functional of the density profile. We also propose a description of the model in the context of the macroscopic fluctuation theory and we check the consistency with the exact computations from the finite size lattice.
Casualty accidents involving heavy trucks in the city of Melbourne
Creators: name: Prentice, Alan S.
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.
Website: A Rummage Through Some of the Issues that Impact Visual Art Education in Australia
Creators: name: Selkrig, Mark
Publisher: name: University of Melbourne
Year: 2022
Subjects: Creative arts, media and communication curriculum and pedagogy

description: This site has been developed to outline and share the findings of a significant research project which explored a range of issues that impact the provision of Visual Art Education in Australia. The project occurred in 2017 and was titled: A Rummage Through Art Education in Australia.
Single-particle and collective motion in unbound deformed $ ^{39}\text{Mg} $
Creators: name: Fossez, K.
name: Rotureau, J.
name: Michel, N.
name: Liu, Quan
name: Nazarewicz, W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Background: Deformed neutron-rich magnesium isotopes constitute a fascinating territory where the interplay between collective rotation and single-particle motion is strongly affected by the neutron continuum. The unbound $fp$-shell nucleus $ ^{39}\text{Mg} $ is an ideal candidate to study this interplay. Purpose: In this work, we predict the properties of low-lying resonant states of $ ^{39}\text{Mg} $, using a suite of realistic theoretical approaches rooted in the open quantum system framework. Method: To describe the spectrum and decay modes of $ ^{39}\text{Mg} $ we use the conventional Shell Model, Gamow Shell Model, Resonating Group Method, Density Matrix Renormalization Group method, and the non-adiabatic Particle-Plus-Rotor model formulated in the Berggren basis. Results: The unbound ground state of $ ^{39}\text{Mg} $ is predicted to be either a $ J^π = {7/2}^- $ state or a $ {3/2}^- $ state. A narrow $ J^π = {7/2}^- $ ground-state candidate exhibits a resonant structure reminiscent of that of its one-neutron halo neighbor $ ^{37}\text{Mg} $, which is dominated by the $ f_{7/2} $ partial wave at short distances and a $ p_{3/2} $ component at large distances. A $ J^π={3/2}^- $ ground-state candidate is favored by the large deformation of the system. It can be associated with the $ {1/2}^- [321] $ Nilsson orbital dominated by the $\ell=1$ wave; hence its predicted width is large. The excited $J^π = {1/2}^-$ and $5/2^-$ states are expected to be broad resonances, while the $ J^π = {9/2}^- $ and $ {11/2}^- $ members of the ground-state rotational band are predicted to have very small neutron decay widths. Conclusion: We demonstrate that the subtle interplay between deformation, shell structure, and continuum coupling can result in a variety of excitations in an unbound nucleus just outside the neutron drip line.
description: 9 pages, 6 figures
Praxisbericht: Bildung, Digitalisierung und Nachhaltigkeit - zum Potential der Arbeitslehre für die allgemeine Lehrkräftebildung
Creators: name: Stilz, Melanie
name: Springsguth, Juliane
Publisher: name: Journal of Technical Education (JOTED)
Year: 2021

description: Bildung in der digitalen Welt geht weit über den Einsatz digitaler Techno-logien zur fachdidaktischen Unterstützung des Unterrichts hinaus. Der Auftrag der Schule die Schülerschaft zu einer aktiven und verantwortlichen Teilhabe am Leben zu befähigen, bedeutet auch sie angemessen auf die zentralen gesellschaftlichen Prozesse und Veränderungen vorzube-reiten. Der Digitale Wandel spielt dabei eine ebenso einschneidende Rolle wie die Klimakrise und die Möglichkeiten einer nachhaltigen Entwicklung. In einem Online-Seminar an der Technischen Universität Berlin wurde der Frage nachgegangen, wie Bildung für Nachhaltige Entwicklung (BNE) und Digitale Bildung in projektorientierter Lehre miteinander verschränkt werden können. Dabei sollten Berührungsängste mit digitalen Technologien abgebaut, Potentiale für den didakti-schen Mehrwert aufgezeigt und Anregungen für die allgemeine Bildung identifiziert werden. Schlüsselwörter: Digitale Lehrkräftebildung, Design Thinking, Digitale Technologien, BNE
description: Journal of Technical Education (JOTED), Bd. 9 Nr. 2 (2021): Journal of Technical Education (JOTED)
Using Software-Defined Networking for Ransomware Mitigation: the Case of CryptoWall
Creators: name: Cabaj, Krzysztof
name: Mazurczyk, Wojciech
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Currently, different forms of ransomware are increasingly threatening Internet users. Modern ransomware encrypts important user data and it is only possible to recover it once a ransom has been paid. In this paper we show how Software-Defined Networking (SDN) can be utilized to improve ransomware mitigation. In more detail, we analyze the behavior of popular ransomware - CryptoWall - and, based on this knowledge, we propose two real-time mitigation methods. Then we designed the SDN-based system, implemented using OpenFlow, which facilitates a timely reaction to this threat, and is a crucial factor in the case of crypto ransomware. What is important is that such a design does not significantly affect overall network performance. Experimental results confirm that the proposed approach is feasible and efficient.
description: 9 pages, 6 figures
Impact of English Language Teaching and National Identity on Filipinos in the Call Center Industry
Creators: name: Zagabe, Mitima Jean-Paul
Publisher: name: Zenodo
Year: 2018
Subjects: Education
English Language
National identity
Call Center Industry
Business Process Outsourcing
Customer Service Representatives

description: Abstract The Call Center Industry (CCI) in the Philippines has been attracting employees from different national and linguistic backgrounds. The industry required employees to have a strong command of the English language more specifically, American English, which serves as the model for the English language requirements. However, these requirements may have a negative impact on the linguistic and national identity of Filipino employees. This study explored the Filipino English language trainers’ and Customer Service Representatives’ integration with the American culture and language and whether this has any influence on the way they teach or use the language. It also investigated whether training in the business process outsourcing (BPO) and training schools has any impact on the language and national identity of Filipino employees through strategies used to teach, transact amongst themselves, and with the American customers, and through the ways these employees perceive themselves as call center employees, as employees in the BPO training schools, and as Filipinos. Data were gathered using the following instruments participants’ profile form, one interview schedule, two observations, quality assurance forms, call flow forms, and job postings. Research locales were five call centers and two BPO training schools purposefully selected within Metro Manila where more BPO companies and training schools are located than in any other region of the Philippines and where Filipinos from different regions are employed. The sample consisted of 15 participants, five of whom are trainers in the BPO sector, three in PBO training schools, and seven Customer Service Representatives (CSRs).
description: Masters Thesis
title: Thermodynamics and kinetics of CO and benzene adsorption on Pt(111) studied with pulsed molecular beams and microcalorimetry
Creators: name: Schießer, Alexander
name: Hörtz, Peter
name: Schäfer, Rolf
Publisher: name: Elsevier
Year: 2023

description: The adsorption and desorption of the system CO/Pt(111) and C6H6/Pt(111) at 300 K has been investigated with a pulsed molecular beam method in combination with a microcalorimeter. For benzene the sticking probability has been measured in dependence of the coverage θ. For coverages θ > 0.8 transient adsorption is observed. From an analysis of the time-dependence of the molecular beam pulses the rate constant for desorption is determined to be 5.6 s− 1. With a precursor-mediated kinetic adsorption model this allows to obtain also the hopping rate constant of 95.5 s− 1. The measured adsorption enthalpies could be best described by (199 − 77θ − 51θ2) kJ/mol, in good agreement with the literature values. For CO on Pt(111) also transient adsorption has been observed for θ > 0.95 at 300 K. The kinetic analysis yields rate constants for desorption and hopping of 20 s−1 and 51 s−1, respectively. The heats of adsorption show a linear dependence on coverage (131 − 38θ) kJ/mol between 0 ≤ θ ≤ 0.3, which is consistent with the desorption data from the literature. For higher coverage (up to θ = 0.9ML) a slope of −63 kJ/mol describes the decrease of the differential heat of adsorption best. This result is only compatible with desorption experiments, if the pre-exponential factor decreases strongly at higher coverage. We found good agreement with recent quantum chemical calculations made for (θ = 0.5ML).
Direct integration of load time history for glass design
Creators: name: Calderone, Ignatius Joseph.
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.
CO Multi-line Imaging of Nearby Galaxies (COMING): I. Physical properties of molecular gas in the barred spiral galaxy NGC 2903
Creators: name: Muraoka, Kazuyuki
name: Sorai, Kazuo
name: Kuno, Nario
name: Nakai, Naomasa
name: Nakanishi, Hiroyuki
name: Takeda, Miho
name: Yanagitani, Kazuki
name: Kaneko, Hiroyuki
name: Miyamoto, Yusuke
name: Kishida, Nozomi
name: Hatakeyama, Takuya
name: Umei, Michiko
name: Tanaka, Takahiro
name: Tomiyasu, Yuto
name: Saita, Chey
name: Ueno, Saeko
name: Matsumoto, Naoko
name: Salak, Dragan
name: Morokuma-Matsui, Kana
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present simultaneous mappings of J=1-0 emission of 12CO, 13CO, and C18O molecules toward the whole disk (8' x 5' or 20.8 kpc x 13.0 kpc) of the nearby barred spiral galaxy NGC 2903 with the Nobeyama Radio Observatory 45-m telescope at an effective angular resolution of 20" (or 870 pc). We detected 12CO(J=1-0) emission over the disk of NGC 2903. In addition, significant 13CO(J=1-0) emission was found at the center and bar-ends, whereas we could not detect any significant C18O(J=1-0) emission. In order to improve the signal-to-noise ratio of CO emission and to obtain accurate line ratios of 12CO(J=2-1)/12CO(J=1-0) ($R_{2-1/1-0}$) and 13CO(J=1-0)/12CO(J=1-0) ($R_{13/12}$), we performed the stacking analysis for our 12CO(J=1-0), 13CO(J=1-0), and archival 12CO(J=2-1) spectra with velocity-axis alignment in nine representative regions of NGC 2903. We successfully obtained the stacked spectra of the three CO lines, and could measure averaged $R_{2-1/1-0}$ and $R_{13/12}$ with high significance for all the regions. We found that both $R_{2-1/1-0}$ and $R_{13/12}$ differ according to the regions, which reflects the difference in the physical properties of molecular gas; i.e., density ($n_{\rm H_2}$) and kinetic temperature ($T_K$). We determined $n_{\rm H_2}$ and $T_K$ using $R_{2-1/1-0}$ and $R_{13/12}$ based on the large velocity gradient approximation. The derived $n_{\rm H_2}$ ranges from ~ 1000 cm$^{-3}$ (in the bar, bar-ends, and spiral arms) to 3700 cm$^{-3}$ (at the center) and the derived $T_K$ ranges from 10 K (in the bar and spiral arms) to 30 K (at the center). We examined the dependence of star formation efficiencies (SFEs) on $n_{\rm H_2}$ and $T_K$, and found the positive correlation between SFE and $n_{\rm H_2}$ with the correlation coefficient for the least-square power-law fit $R^2$ of 0.50. This suggests that molecular gas density governs the spatial variations in SFEs.
description: 26 pages, 11 figures, 3 tables, accepted for publication in PASJ
Editorial: Ein Blick auf die Digitalisierung der Bildung im Kontext ethischer, rechtlicher und sozialer Implikationen
Creators: name: Zinn, Bernd
Publisher: name: Journal of Technical Education (JOTED)
Year: 2021

description: Der vorliegende Beitrag beschäftigt sich mit der digitalen Transformation und wirft hierbei einen Blick auf die ethischen, rechtlichen und sozialen Implikationen (ELSI) die sich mit dem Einsatz digitaler Technologien in der Bildung verbinden. Um die Innovationspoten-ziale von Mixed-Reality und Künstlicher Intelligenz in der beruflichen Aus- und Weiterbildung nutzbar zu machen, wird im Beitrag für einen konstruktiven Umgang mit den ethischen, rechtli-chen und sozialen Implikationen plädiert. Hierzu werden nach der Einleitung und einer kurzen Darstellung der Potenziale digitaler Technologien ausgewählte ethische, rechtliche und soziale Implikationen diskutiert, um dann Ansatzpunkte und Empfehlungen für einen reflektierten Um-gang mit den ELSI-Aspekten darzustellen. Schlüsselwörter: Digitale Transformation, Mixed Reality (MR), Künstliche Intelligenz (KI), Learning Analytics (LA), Mensch-Technik-Interaktion (MTI), ELSI
description: Journal of Technical Education (JOTED), Bd. 9 Nr. 2 (2021): Journal of Technical Education (JOTED)
Emulación vs. desaparición: Agrippa (a book of the dead) + preservación del relato
Creators: name: Ponce Díaz, Romano
name: Chamorro Escalante, Jorge Arturo
Publisher: name: Zenodo
Year: 2018
Subjects: Cyberpunk
William Gibson
Estudios Visuales
Emulación
Digital preservation

description: A partir de las perspectivas transdisciplinares de los Estudios Visuales, se aspira a ejecutar un recorrido de la pieza de arte objetual [Libro de Artista]: Agrippa [a book of the dead], concebida en el año de 1992 por William Gibson y Dennis Ashbaugh. La pieza que consistió en un poema de 300 líneas de texto, almacenado en un diskette de 3.5”,el cual estaba programado para encriptar y destruir el texto una vez que hubiera sido leído. Tal Diskette estaba contenido en un Libro de Artista, obra de Ashbaugh, cuyas páginas estaban tratadas con materiales fotosensibles, las cuales aspiraban a la degradación paulatina de su contenido. A las pocas horas de haberse presentado la pieza, por medio de hackeo y sabotaje, diversos personajes anónimos evitaron la desaparición digital de la pieza de arte, rompiendo con la intención efímera de la misma, cuestionando nuestra relación con la tecnología, la memoria, la reproducción y el arte. ISBN 978-607-8523-95-5 Romano Ponce-Díaz.
Dilution of a jet in a cross flow
Creators: name: Williams, R. D. .
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.
Double Deep Q-Learning-based Path Selection and Service Placement for Latency-Sensitive Beyond 5G Applications
Creators: name: Shokrnezhad, Masoud
name: Taleb, Tarik
name: Dazzi, Patrizio
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Artificial Intelligence (cs.AI)
subject: Emerging Technologies (cs.ET)
subject: Machine Learning (cs.LG)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Nowadays, as the need for capacity continues to grow, entirely novel services are emerging. A solid cloud-network integrated infrastructure is necessary to supply these services in a real-time responsive, and scalable way. Due to their diverse characteristics and limited capacity, communication and computing resources must be collaboratively managed to unleash their full potential. Although several innovative methods have been proposed to orchestrate the resources, most ignored network resources or relaxed the network as a simple graph, focusing only on cloud resources. This paper fills the gap by studying the joint problem of communication and computing resource allocation, dubbed CCRA, including function placement and assignment, traffic prioritization, and path selection considering capacity constraints and quality requirements, to minimize total cost. We formulate the problem as a non-linear programming model and propose two approaches, dubbed B\&B-CCRA and WF-CCRA, based on the Branch \& Bound and Water-Filling algorithms to solve it when the system is fully known. Then, for partially known systems, a Double Deep Q-Learning (DDQL) architecture is designed. Numerical simulations show that B\&B-CCRA optimally solves the problem, whereas WF-CCRA delivers near-optimal solutions in a substantially shorter time. Furthermore, it is demonstrated that DDQL-CCRA obtains near-optimal solutions in the absence of request-specific information.
description: in IEEE Transactions on Mobile Computing, 2023. arXiv admin note: text overlap with arXiv:2309.09763
Systematic afterpulsing-estimation algorithms for gated avalanche photodiodes
Creators: name: Wiechers, Carlos
name: Ramírez-Alarcón, Roberto
name: Muñiz-Sánchez, Oscar R.
name: Yépiz, Pablo Daniel
name: Arredondo-Santos, Alejandro
name: Hirsch, Jorge G.
name: U'Ren, Alfred B
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a method designed to efficiently extract optical signals from InGaAs avalanche photodiodes (APDs) operated in gated mode. In particular, our method permits an estimation of the fraction of counts which actually results from the signal being measured, as opposed to being produced by noise mechanisms, specifically by afterpulsing. Our method in principle allows the use of InGaAs APDs at high detection efficiencies, with the full operation bandwidth, either with or without resorting to the application of a dead time. As we show below, our method can be used in configurations where afterpulsing exceeds the genuine signal by orders of magnitude, even near saturation. The algorithms which we have developed are suitable to be used either in real-time processing of raw detection probabilities or in post-processing applications, after a calibration step has been performed. The algorithms which we propose here can complement technologies designed for the reduction of afterpulsing.
description: 15 pages, 12 figures, to be published in Applied Optics
GLOBALISE: A Plurivocal Approach to Unlocking Colonial Sources
Creators: name: Petram, Lodewijk
name: van Wissen, Leon
Publisher: name: Zenodo
Year: 2023
Subjects: Digital Humanities
Digital Research Infrastructures
Archives and Collections
Global Histories
Cross-Cultural Collaboration
Postcolonial Digital Humanities

description: This poster introduces GLOBALISE (General Letters Ontology-Based AccessibiLity InfraStructurE, 2022-2026). This innovative and interdisciplinary project, funded by the Dutch Research Council, aims to unlock the key series of documents and reports in the archives of the Dutch East India Company (VOC) for advanced new research methods. This archival series of more than 5 million handwritten pages, kept in the Dutch National Archives in The Hague, is of irrefutable value for reconstructing the history of the vast region around the Indian Ocean and Indonesian archipelago where the VOC was active from 1602 until 1798. For some regions, documents in the VOC archives are among the earliest written historical sources. GLOBALISE is a collaboration of the Huygens Institute with the International Institute of Social History, the Digital Infrastructure Department of the KNAW Humanities Cluster, the Computational Linguistics & Text Mining Lab of VU University, the CREATE program of the University of Amsterdam, and the Dutch National Archives. It is funded by the Dutch Research Council, within the framework of the Research Infrastructure: national consortia program. The project is made up of a young and diverse team of early-career and senior interdisciplinary researchers and developers.
Comparison of ultracold neutron sources for fundamental physics measurements
Creators: name: Bison, G.
name: Daum, M.
name: Kirch, K.
name: Lauss, B.
name: Ries, D.
name: Schmidt-Wellenburg, P.
name: Zsigmond, G.
name: Brenner, T.
name: Geltenbort, P.
name: Jenke, T.
name: Zimmer, O.
name: Beck, M.
name: Heil, W.
name: Kahlenberg, J.
name: Karch, J.
name: Ross, K.
name: Eberhardt, K.
name: Geppert, C.
name: Karpuk, S.
name: Reich, T.
name: Siemensen, C.
name: Sobolev, Y.
name: Trautmann, N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Ultracold neutrons (UCNs) are key for precision studies of fundamental parameters of the neutron and in searches for new CP violating processes or exotic interactions beyond the Standard Model of particle physics. The most prominent example is the search for a permanent electric dipole moment of the neutron (nEDM). We have performed an experimental comparison of the leading UCN sources currently operating. We have used a 'standard' UCN storage bottle with a volume of 32 liters, comparable in size to nEDM experiments, which allows us to compare the UCN density available at a given beam port.
description: 20 pages, 30 Figures
Real-space mapping of electronic orbitals
Creators: name: Löffler, Stefan
name: Bugnet, Matthieu
name: Gauquelin, Nicolas
name: Lazar, Sorin
name: Assmann, Elias
name: Held, Karsten
name: Botton, Gianluigi A.
name: Schattschneider, Peter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electronic states are responsible for most material properties, including chemical bonds, electrical and thermal conductivity, as well as optical and magnetic properties. Experimentally, however, they remain mostly elusive. Here, we report the real-space mapping of selected transitions between p and d states on the Ångström scale in bulk rutile (TiO2) using electron energy-loss spectrometry (EELS), revealing information on individual bonds between atoms. On the one hand, this enables the experimental verification of theoretical predictions about electronic states. On the other hand, it paves the way for directly investigating electronic states under conditions that are at the limit of the current capabilities of numerical simulations such as, e.g., the electronic states at defects, interfaces, and quantum dots.
The effect of track continuity and load dispersion on the influence lines of a standard 6.883m span railway bridge
Creators: name: Chitty, Gerard B.
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.
Image-Text Pre-Training for Logo Recognition
Creators: name: Hubenthal, Mark
name: Kumar, Suren
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Open-set logo recognition is commonly solved by first detecting possible logo regions and then matching the detected parts against an ever-evolving dataset of cropped logo images. The matching model, a metric learning problem, is especially challenging for logo recognition due to the mixture of text and symbols in logos. We propose two novel contributions to improve the matching model's performance: (a) using image-text paired samples for pre-training, and (b) an improved metric learning loss function. A standard paradigm of fine-tuning ImageNet pre-trained models fails to discover the text sensitivity necessary to solve the matching problem effectively. This work demonstrates the importance of pre-training on image-text pairs, which significantly improves the performance of a visual embedder trained for the logo retrieval task, especially for more text-dominant classes. We construct a composite public logo dataset combining LogoDet3K, OpenLogo, and FlickrLogos-47 deemed OpenLogoDet3K47. We show that the same vision backbone pre-trained on image-text data, when fine-tuned on OpenLogoDet3K47, achieves $98.6\%$ recall@1, significantly improving performance over pre-training on Imagenet1K ($97.6\%$). We generalize the ProxyNCA++ loss function to propose ProxyNCAHN++ which incorporates class-specific hard negative images. The proposed method sets new state-of-the-art on five public logo datasets considered, with a $3.5\%$ zero-shot recall@1 improvement on LogoDet3K test, $4\%$ on OpenLogo, $6.5\%$ on FlickrLogos-47, $6.2\%$ on Logos In The Wild, and $0.6\%$ on BelgaLogo.
description: 8 pages, 5 figures, 4 tables
Über das TPACK-Professionswissen angehender Lehrkräfte zum Einsatz digitaler Medien im Technikunterricht
Creators: name: Link, Nico
name: Nepper, Hannes Helmut
Publisher: name: Journal of Technical Education (JOTED)
Year: 2021

description: Arbeiten zum Professionswissen angehender Techniklehrkräfte beschrän-ken sich bislang aus Umfangsgründen auf die zentrale Erfassung fachdidaktischer Kompetenzfa-cetten, die über die professionelle Unterrichtswahrnehmung operationalisiert werden (vgl. Goreth, Geißel & Rehm 2016; Straub 2020). Eine Berücksichtigung des Professionswissens angehender Lehrkräfte über die lernförderliche Einbindung digitaler Medien in den Technikunterricht ist man-gels geeigneter Messinstrumente aktuell nicht möglich. Mit dem vorliegenden Beitrag wird ange-strebt, diese Lücke partiell zu schließen und einen Test zur Erfassung von TPACK bei angehenden Techniklehrkräften zu präsentieren (n = 165). Zudem werden geschlechtsspezifische Unterschiede und weitere Erkenntnisse aus einer Interventionsstudie zur Veränderung des Professionswissens aufgeführt. Schlüsselwörter: TPACK, Technische Bildung, Technikstudierende, CAD, CNC
description: Journal of Technical Education (JOTED), Bd. 9 Nr. 2 (2021): Journal of Technical Education (JOTED)
Exploring Jácana: An Analysis of the PO-29 Site
Creators: name: Corrales, Jillyan
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: Jácana (PO-29)
subject: Areíto
subject: Cemís
subject: Petroglyphs
subject: Batey
subject: Pre-Hispanic Caribbean
subject: Caribbean Ethnohistory
subject: Caribbean Archaeology

description: This project investigates the interactions and transformations present in the pre-Hispanic components of the Jácana (PO-29) site, located in Ponce, Puerto Rico. Utilizing archaeological site reports, ethnohistorical sources, and secondary scholarship in the fields of anthropology and history, I investigate the site’s pre-Hispanic components from a multi-scalar perspective. I ultimately argue that the Jácana site is characterized by interaction and dynamic transformation on multiple levels. I trace the site’s chronological development, its functions, and the scale of interaction during two pre-Hispanic occupations and one period of abandonment. In considering the Jácana landscape, the project also touches upon themes of ancestor veneration, population mobility, and ritual and ceremonial contexts. I find that that Jácana undergoes considerable alteration during the pre-Hispanic period, both in terms of its structural layout and scale of interaction. These findings highlight the dynamic nature of the site and could potentially be generalized for other batey spaces in future projects.
Exponential Stability and Stabilization of Extended Linearizations via Continuous Updates of Riccati Based Feedback
Creators: name: Benner, Peter
name: Heiland, Jan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 93C15, 93B52, 93D20

description: Many recent works on stabilization of nonlinear systems target the case of locally stabilizing an unstable steady state solutions against small perturbation. In this work we explicitly address the goal of driving a system into a nonattractive steady state starting from a well developed state for which the linearization based local approaches will not work. Considering extended linearizations or state-dependent coefficient representations of nonlinear systems, we develop sufficient conditions for stability of solution trajectories. We find that if the coefficient matrix is uniformly stable in a sufficiently large neighborhood of the current state, then the state will eventually decay. Based on these analytical results we propose an update scheme that is designed to maintain the stabilization property of Riccati based feedback constant during a certain period of the state evolution. We illustrate the general applicability of the resulting algorithm for setpoint stabilization of nonlinear autonomous systems and its numerical efficiency in two examples.