cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Anisotropic spin generalization of elliptic Macdonald-Ruijsenaars operators and R-matrix identities
Creators: name: Matushko, M.
name: Zotov, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Algebra (math.QA)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We propose commuting set of matrix-valued difference operators in terms of the elliptic Baxter-Belavin $R$-matrix in the fundamental representation of ${\rm GL}_M$. In the scalar case $M=1$ these operators are the elliptic Macdonald-Ruijsenaars operators, while in the general case they can be viewed as anisotropic versions of the quantum spin Ruijsenaars Hamiltonians. We show that commutativity of the operators for any $M$ is equivalent to a set of $R$-matrix identities. The proof of identities is based on the properties of elliptic $R$-matrix including the quantum and the associative Yang-Baxter equations. As an application of our results, we introduce elliptic generalization of q-deformed Haldane-Shastry model.
description: 38 pages, minor corrections
Epistemologische Überzeugungen von Auszubildenden und deren Einfluss auf die metalltechnische Fachkompetenz
Creators: name: Zinn, Bernd
name: Sari, Duygu
Publisher: name: Journal of Technical Education (JOTED)
Year: 2015

description: In der Lehr-Lernforschung herrscht Konsens, dass die schulischen Leistungen von Lernenden durch multiple Determinanten begründet sind. Neben der allgemeinen Intelligenz, der persönlichen Motivation und dem individuellen Fähigkeitsselbstkonzept, geht man auch davon aus, dass die subjektiven Theorien von Lernenden (z.B. epistemologische Überzeugungen, Ansichten zum Lernen, subjektive Theorien zum Fach) einen Einfluss auf die schulische Leistung nehmen. Im vorliegenden Beitrag geht es erstens um die Beschreibung des Entwicklungsstands der epistemologischen Überzeugungen von Auszubildenden der Metalltechnik zu Beginn der Ausbildung (n=353) und zweitens um die Untersuchung des Einflusses der epistemologischen Überzeugungen auf die metalltechnische Fachkompetenz am Ende der Grundstufe (n=300). Die Ergebnisse belegen, dass bei einer Vielzahl von Auszubildenden zum Konstrukt individuelle Entwicklungspotenziale bestehen und die epistemologischen Überzeugungen, neben der kognitiven Leistungsfähigkeit, den mathematischen Kompetenzen und dem Fachinteresse, einen signifikanten Beitrag zur Erklärung der metalltechnischen Fachkompetenz am Ende der Grundstufe liefern. Schlüsselwörter: Subjektive Theorien, Epistemologische Überzeugungen, gewerblich-technische Domäne, Metalltechnik, metalltechnische Fachkompetenz Epistemological beliefs of students and their effect on metal technologic expertise Abstract In the teaching-learning research, there is a consensus that the academic performance of learners is motivated by multiple determinants. In addition to general intelligence, personal motivation and the individual self-concept regarding ability, it is also assumed that the subjective theories of learners (e.g. epistemological beliefs, opinions about learning, and subjective theories concerning the subject) have an effect on academic achievement. In this paper, the topics to be discussed are, first, the description of the state of development of epistemological beliefs of students of metalworking technology at the beginning of their training (n=353) and, second, the examination of the influence of epistemological beliefs on metal technical expertise at the end of the basic level (n=300). The results show that in a number of trainees, there is evidence of individual development potential, and that epistemological beliefs, in addition to cognitive performance, mathematical skills and professional interest make a significant contribution to the explanation of metalworking technology expertise at the end of the basic stage. Keywords: subjective theories, epistemological beliefs, commercial-technical domain, metalworking technology, metalworking technology expertise
description: Journal of Technical Education (JOTED), Bd. 3 Nr. 1 (2015): Journal of Technical Education (JOTED)
Erfassung fachdidaktischer Lehrkompetenz im technikbezogenen Unterricht der Sekundarstufe 1. Instrumentenkonstruktion und erste Befunde
Creators: name: Goreth, Sebastian
name: Geißel, Bernd
name: Rehm, Markus
Publisher: name: Journal of Technical Education (JOTED)
Year: 2015

description: In der aktuellen Forschungsdiskussion stellen die Bereiche Fachwissen, pädagogisches Wissen und fachdidaktisches Wissen die Kernbereiche des Professionswissens von Lehrer(innen) dar. Dieser Beitrag skizziert Ausschnitte des aktuellen Stands der testbasierten Erfassung professioneller Lehrkompetenzen. Im Weiteren soll ein an internationalen Standards der Professionalisierungsforschung ausgerichtetes vignettengestütztes Testverfahren zur Erfassung fachdidaktischer Lehrkompetenz des Technikunterrichts an allgemeinbildenden Schulen vorgestellt und ergänzend der Validierungsschritt I sowie erste Ergebnisse einer Pilotierung dargelegt werden. Schlüsselwörter: Technikdidaktisches Wissen, PCK, Vignetten, Validierung von Unterrichtsvignetten Measurement of Pedagogical Content Knowledge in the Teaching of Technology in the higher classes - instrument construction and first results Abstract Content knowledge, psychological pedagogical knowledge and pedagogical content knowledge represent the core of teachers’ professional knowledge in the current research discussion. This article outlines the current state (excerpts) of test-based measurement of professional teaching competences. Furthermore a vignette-based test will be introduced, measuring teaching competences to international standards of professionalization research in the field of technology lesson in general education and additionally the validation step I and first results of a pilot will be presented. Keywords: Pedagogical Content Knowledge Technology, PCK, vignette-testlets, validation of vignette-based test
description: Journal of Technical Education (JOTED), Bd. 3 Nr. 1 (2015): Journal of Technical Education (JOTED)
Roadmap to Majorana surface codes
Creators: name: Plugge, S.
name: Landau, L. A.
name: Sela, E.
name: Altland, A.
name: Flensberg, K.
name: Egger, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Surface codes offer a very promising avenue towards fault-tolerant quantum computation. We argue that two-dimensional interacting networks of Majorana bound states in topological superconductor/semiconductor heterostructures hold several distinct advantages in that direction, both concerning the hardware realization and the actual operation of the code. We here discuss how topologically protected logical qubits in this Majorana surface code architecture can be defined, initialized, manipulated, and read out. All physical ingredients needed to implement these operations are routinely used in topologically trivial quantum devices. In particular, we show that by means of quantum interference terms in linear conductance measurements, composite single-electron pumping protocols, and gate-tunable tunnel barriers, the full set of quantum gates required for universal quantum computation can be implemented.
description: 23 pages, 8 figures
Prevalence of Depression and Associated Factors among Primary Caregivers of Adult Cancer Patients Attending Hawassa University Specialized Hospital Oncology Unit South Ethiopia, 2019: Mixed Study Design
Creators: name: Demissie, Gulema
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: Introduction. Cancer is a primary and devastating health problem. Because of large population growth and increased life expectancy, prevalence of cancer is rising. The impact of cancer trajectory is beyond cancer patients as it affects the social environment of the patients. The effect of cancer on the psychological well-being of the caregivers of cancer patients could result a raised risk of psychiatric morbidity as relater to stressful life events. However, the caregivers have been ignored or overlooked team. Early identification and treatment of depression, can improve their physical and mental health, their quality of life, limit suffering, and can improve their service/care giving role to patients with cancer. Objective. To determine prevalence of depression and associated factors among caregivers of cancer patients attending Hawassa university specialized hospital oncology unit, South Ethiopia, 2019. Methodology. Institution based mixed study design will be conducted among family caregivers of adult cancer patients attending Hawassa University Specialized Hospital oncology unit. For quantitative method, convenient sampling technique considered to be used and sample size determined by calculating using single population proportion and became 422 sample size. But the service takers are not more than 300 per month; because of this census technique will be considered. For qualitative method, purposive sampling technique will be used and sample size will be determined based on the saturation of the information. The data will be collected using structured and semi-structured questionnaires. The data will be analyzed using SPSS version 24 and MAXQDA version 18.1and the results will be triangulated and displayed by tables, figures and texts. Expected outcome: High rate of depression, burden and disrupted quality of life and different significantly associated factors will be expected from this study. And the study will benefit the cancer patients, caregivers, and nurses at large. Budget: To conduct this project for about 40,419.30EB is needed.
Generalized Design Principles for Hydrodynamic Electron Transport in Anisotropic Metals
Creators: name: Wang, Yaxian
name: Varnavides, Georgios
name: Anikeeva, Polina
name: Gooth, Johannes
name: Felser, Claudia
name: Narang, Prineha
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Interactions of charge carriers with lattice vibrations, or phonons, play a critical role in unconventional electronic transport of metals and semimetals. Recent observations of phonon-mediated collective electron flow in bulk semimetals, termed electron hydrodynamics, present new opportunities in the search for strong electron-electron interactions in high carrier density materials. Here we present the general transport signatures of such a second-order scattering mechanism, along with analytical limits at the Eliashberg level of theory. We study electronic transport, using $ab$ $initio$ calculations, in finite-size channels of semimetallic ZrSiS and TaAs$_2$ with and without topological band crossings, respectively. The order of magnitude separation between momentum-relaxing and momentum-conserving scattering length-scales across a wide temperature range make both of them promising candidates for further experimental observation of electron hydrodynamics. More generally, our calculations show that the hydrodynamic transport regime can be realized in a much broader class of anisotropic metals and does not, to first order, rely on the topological nature of the bands. Finally, we discuss general design principles guiding future search for hydrodynamic candidates, based on the analytical formulation and our $ab$ $initio$ predictions. We find that systems with strong electron-phonon interactions, reduced electronic phase space, and suppressed phonon-phonon scattering at temperatures of interest are likely to feature hydrodynamic electron transport. We predict that layered and/or anisotropic semimetals composed of half-filled $d$-shells and light group V/VI elements with lower crystal symmetry are ideal candidates to observe hydrodynamic phenomena in future.
description: 10 pages, 5 figures
Disformal invariance of continuous media with linear equation of state
Creators: name: Celoria, M.
name: Matarrese, S.
name: Pilo, L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that the effective theory describing single component continuous media with a linear and constant equation of state of the form $p=wρ$ is invariant under a 1-parameter family of continuous disformal transformations. In the special case of $w=1/3$ (ultrarelativistic gas), such a family reduces to conformal transformations. As examples, perfect fluids, homogeneous and isotropic solids are discussed.
description: latex, 7 pages
Loss to follow-up and its predictors among adult HIV patients on rapid initiation of antiretroviral treatment in selected governmental hospitals, Southwest Ethiopia, 2019
Creators: name: Nuru, Usman
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: Background: Currently, lifelong anti-retroviral treatment were given for people living with HIV without considering their CD4 cell counts & WHO clinical staging in most countries of the World including Ethiopia. Even if there were no sufficient evidence on loss to follow up after the implementation of rapid initiation of anti retroviral treatment in Ethiopia, studies showed that rapid initiation of ART will increase the risk of loss to follow up especially in low level income countries. Objective: The aim of this study was to assess loss to follow up and its predictors among adult HIV infected patients on rapid initiation of anti retroviral treatment in Gebretsadik Shawo General Hospital and Mizan-Tepi University Teaching Hospital. Methods: Retrospective cohort study design was used to assess loss to follow up and its predictors among adult HIV infected patients on rapid initiation of anti retroviral treatment in Gebretsadik Shawo General Hospital and Mizan-Tepi University Teaching Hospital from October 2017 to December 31, 2018. A total of 318 patients card were retrieved by using checklists developed to assess loss to follow up from anti retroviral therapy clinics. Data were collected from March 20 through April 15, 2019, entered into Epi data 3.1 and exported to statistical package for social sciences (SPSS) version 24. Kaplan–Meier curve and log-rank test were used to compare survival experiences. Cox-regression was used to identify the predictors of loss to follow up at p≤ 0.05. Result: All the 318 patients were followed for 2662 person-months and the overall incidence rate of loss to follow up were 3.5 per 100 person months (95% CI: 2.8, 4.2). Being male sex (AHR =4.33; 95%CI: 2.22, 8.43), unknown IPT status (AHR=5.49; 95%CI: 1.46, 20.59), not received IPT history (AHR=2.42; 95% CI: 1.49, 3.91), bedridden functional status (AHR=5.049; 95% CI: 2.34, 10.87) and non disclosures (AHR=2.28; 95% CI: 1.35, 3.83) were identified as independent predictors of time to LTFU. Conclusion: high proportion of loss to follow up was recorded especially on the same day treatment. Therefore, proper counseling and tracing mechanisms were recommended for highly risky patients for loss to follow up.
Optimization of Hopf bifurcation points
Creators: name: Boullé, Nicolas
name: Farrell, Patrick E.
name: Rognes, Marie E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 65P30, 65P40, 37M20, 65K10, 49M41

description: We introduce a numerical technique for controlling the location and stability properties of Hopf bifurcations in dynamical systems. The algorithm consists of solving an optimization problem constrained by an extended system of nonlinear partial differential equations that characterizes Hopf bifurcation points. The flexibility and robustness of the method allows us to advance or delay a Hopf bifurcation to a target value of the bifurcation parameter, as well as controlling the oscillation frequency with respect to a parameter of the system or the shape of the domain on which solutions are defined. Numerical applications are presented in systems arising from biology and fluid dynamics, such as the FitzHugh--Nagumo model, Ginzburg--Landau equation, Rayleigh--Bénard convection problem, and Navier--Stokes equations, where the control of the location and oscillation frequency of periodic solutions is of high interest.
description: 22 pages, 8 figures
Computer modelling of diesel engine mechanism
Creators: name: Jenkinson, H. A.
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.
Beats and Expansion of Two-Component Bose-Einstein Condensates in the Thomas-Fermi Limit
Creators: name: Quach, James Q.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: A unique feature of multi-component BECs is the possibility of beating frequencies in collective oscillations. We analytically determine this beating frequency for the two-component BEC in one-dimension. We also show that the Thomas-Fermi approximation, where the quantum pressure is neglected, describes well the expansion of the two-component condensate released from an harmonic trap.
description: 7 pages, 5 figures
Editorial: 3 Jahre JOTED - eine Standortbestimmung der Herausgeber
Creators: name: Tenberg, Ralf
Publisher: name: Journal of Technical Education (JOTED)
Year: 2015

description: Das Journal of Technical Education wurde 2013 im Rahmen einer Zusammenarbeit der Universitäten Stuttgart und Darmstadt entwickelt und erschien zum ersten Mal im Herbst 2013. Ausgangspunkt war damals eine umfassende Recherche über internationale Fachzeitschriften mit einem Schwerpunkt in der technischen Berufs- und Hochschuldidaktik, welche - insbesondere im deutschsprachigen Raum - ein Publikations-Desiderat deutlich machte: Zum einen war festzustellen, dass wissenschaftliche Veröffentlichungen in diesem Bezugsraum unterrepräsentiert sind, zum anderen, dass sie in Fachzeitschriften erscheinen, in welchen sie eher am Rande deren Kerngebiete stehen, oder aber in nicht-periodischen Veröffentlichungen (Tagungs- und Sammelbände, „graue“ Literatur, ...). Zentrale Idee für das JOTED war und ist, für diesen transdisziplinären Forschungsraum eine hochwertige Plattform zu schaffen, die über die Bündelung und Kommunikation wissenschaftlicher Ansätze und Befunde auch ein wenig zur Identitätsbildung beitragen kann. In seiner technikdidaktischen Kernausrichtung fokussiert das JOTED den wissenschaftlichen Austausch von Forschungsergebnissen im Bezugsfeld der technischen und angewandten naturwissenschaftlichen Bildung und richtet sich dabei sowohl an Wissenschaftler als auch an Lehrende. Das Journal soll den allgemeinbildenden, berufsbildenden und hochschulischen Ausbildungsbereich im Kontext technischer und naturwissenschaftlicher Bezugspunkte integrieren, dabei sind didaktische und soziologische Aspekte ebenso relevant, wie psychologische, historische und auch philosophische...
description: Journal of Technical Education (JOTED), Bd. 3 Nr. 1 (2015): Journal of Technical Education (JOTED)
High-quality Thermal Gibbs Sampling with Quantum Annealing Hardware
Creators: name: Nelson, Jon
name: Vuffray, Marc
name: Lokhov, Andrey Y.
name: Albash, Tameem
name: Coffrin, Carleton
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum Annealing (QA) was originally intended for accelerating the solution of combinatorial optimization tasks that have natural encodings as Ising models. However, recent experiments on QA hardware platforms have demonstrated that, in the operating regime corresponding to weak interactions, the QA hardware behaves like a noisy Gibbs sampler at a hardware-specific effective temperature. This work builds on those insights and identifies a class of small hardware-native Ising models that are robust to noise effects and proposes a procedure for executing these models on QA hardware to maximize Gibbs sampling performance. Experimental results indicate that the proposed protocol results in high-quality Gibbs samples from a hardware-specific effective temperature. Furthermore, we show that this effective temperature can be adjusted by modulating the annealing time and energy scale. The procedure proposed in this work provides an approach to using QA hardware for Ising model sampling presenting potential new opportunities for applications in machine learning and physics simulation.
Gyromagnetic bifurcation in a levitated ferromagnetic particle
Creators: name: Sato, T.
name: Kato, T.
name: Oue, Daigo
name: Matsuo, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We examine the mechanical rotation of a levitated magnetic particle that is induced by ferromagnetic resonance under microwave irradiation. We show that two stable solutions appear in a certain range of parameters by bifurcation when the rotation frequency is comparable to the microwave frequency. This phenomenon originates from the coexistence of the Barnett and the Einstein-de Haas effects. We also reveal that this measurement is sensitive to the strength of the spin-rotation coupling. Our work provides a platform for accessing a microscopic relaxation process from spin to macroscopic rotation.
description: 14 pages, 6 figures
Higher-order topological phases emerging from the Su-Schrieffer-Heeger stacking
Creators: name: Luo, Xun-Jiang
name: Pan, Xiao-Hong
name: Liu, Chao-Xing
name: Liu, Xin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work, we develop a systematical approach of constructing and classifying the model Hamiltonians for two-dimensional (2D) higher-order topological phase with corner zero energy states (CZESs). Our approach is based on the direct construction of analytical solution of the CZESs in a series of 2D systems that stack the 1D extended Su-Schrieffer-Heeger (SSH) model, two copies of the original SSH model, along two orthogonal directions. Fascinatingly, our approach not only gives the celebrated Benalcazar-Bernevig-Hughes and 2D SSH models but also reveals a novel model and we refer it to crossed 2D SSH model. Although these three models exhibit completely different bulk topology, we find that the CZESs can be universally characterized by edge winding number for 1D edge states, attributing to their unified Hamiltonian construction form and edge topology. Remarkably, our principle of obtaining CZESs can be readily generalized to arbitrary dimension and superconducting systems. Thus, our work sheds new light on the theoretical understanding of the higher-order topological phase and paves the way to looking for higher-order topological insulators and superconductors.
description: 5 pages, 3 figures, 1 table, and supplementary material
A Large-Scale Multilingual Disambiguation of Glosses
Creators: name: Collados, José Camacho
name: Bovi, Claudio Delli
name: Raganato, Alessandro
name: Navigli, Roberto
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Linking concepts and named entities to knowledge bases has become a crucial Natural Language Understanding task. In this respect, recent works have shown the key advantage of exploiting textual definitions in various Natural Language Processing applications. However, to date there are no reliable large-scale corpora of sense-annotated textual definitions available to the research community. In this paper we present a large-scale high-quality corpus of disambiguated glosses in multiple languages, comprising sense annotations of both concepts and named entities from a unified sense inventory. Our approach for the construction and disambiguation of the corpus builds upon the structure of a large multilingual semantic network and a state-of-the-art disambiguation system; first, we gather complementary information of equivalent definitions across different languages to provide context for disambiguation, and then we combine it with a semantic similarity-based refinement. As a result we obtain a multilingual corpus of textual definitions featuring over 38 million definitions in 263 languages, and we make it freely available at http://lcl.uniroma1.it/disambiguated-glosses. Experiments on Open Information Extraction and Sense Clustering show how two state-of-the-art approaches improve their performance by integrating our disambiguated corpus into their pipeline.
description: Accepted in LREC 2016
Outcome of patients with non Hodgkin's Lymphoma and its predictors, at Tikur Anbessa specialized hospital: a retrospective chart review, Addis Abeba, Ethiopia, 2019.
Creators: name: Tadesse, Bruktawit
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: Background: Non- Hodgkin's Lymphoma is the common hematological malignancy, which originates from lymphatic and immune systems; including lymphocytes and lymph nodes. In Ethiopia Non- Hodgkin's Lymphoma, ranked as 5th most prevalent and 10th deadliest cancer, none the less there is lack of adequate information on the outcomes of patients with Non- Hodgkin's Lymphoma and its predictors. Objective: this study aims to assess Outcome of patients with non Hodgkin's lymphoma and its predictors, at Tikur Anbessa Specialized Hospital: a retrospective chart review; Addis Ababa, Ethiopia, 2019. Methods: Institutional based Retrospective Chart Review study was conducted among patients with Non- Hodgkin's Lymphoma admitted to Tikur Anbessa Specialized Hospital, Hematology unit. Population censes was used to extract data from 71 adult patient charts from February to April 2019. The data were coded and analyzed by using SPSS version 20 and Cox Hazard regression model was used to calculate the substantial association between the dependent and independent variables, while Kaplan–Meier Log-rank model was used to estimate the survival time of patients after Non- Hodgkin's Lymphoma diagnosis. Result: A total of 71 patients were analyzed. The overall five year survival from Non- Hodgkin's Lymphoma was 32.1%with the median survival of 27 months, 95% CI, [21.98-32.01]. Advanced age, Neutrophil count, monocyte count and Lymphocyte count predicted the outcome of Non- Hodgkin's Lymphoma dependently on the bivariate analysis. While relapse, advanced stage, Charlson Comorbidity index ≥3, lymphocyte monocyte ratio <3.1, neutrophil lymphocyte ratio (>2.8), and elevated lactate ≥ 245 predicted mortality independently; whereas only platelet lymphocyte ratio ≥144 was found to be independent predictor of good prognosis on multivariate analysis. Conclusions and recommendations: Generally, the prognosis of Non- Hodgkin's Lymphoma patents was found to be poor; compared to outcomes in the developed world. So, more emphasis should be given to non communicable diseases along with palliative and end of life care on the health policy.
Promotion of Reading Skills with a Recipient and Domain Specific Focus - Empirical Findings in the Professional Field of Construction Engineering
Creators: name: Rexing, Volker
name: Keimes, Christina
name: Ziegler, Birgit
Publisher: name: Journal of Technical Education (JOTED)
Year: 2015

description: Up-to-date efforts to promote reading skills in vocational education have had little effect. The motivational attitude of apprentices towards reading is proving to be a challenge. It is clear that a lot of apprentices remain unaware of the importance of reading competence to their professional lives. Accordingly the consequences for effective training concepts to promote reading skills result from a systematic analysis of the professional (training) reality in the vocational field of construction engineering. In such training concepts the discrepancy between pedagogical objectives and the low value ascribed to reading skills by the trainees seems to be the key didactical challenge. Another important conclusion is the conceptual design of recipient- and domain-specific promotion of reading skills. Keywords: Vocational Education, industrial and technical professions, Vocational Field of Construction Engineering, reading skills, promotion of reading skills Förderung von Lesekompetenz - Herausforderungen im Berufsfeld Bautechnik Zusammenfassung Zur Wirksamkeit von Lesekompetenzförderung im berufsbildenden Kontext liegen bisher eher negative Befunde vor. Als bedeutungsvoll zeigt sich vor allem die problematische motivationale Einstellung zum Lesen. Offensichtlich wird die berufliche Relevanz von Lesekompetenz vielen Auszubildenden nicht deutlich. Auf Basis einer Untersuchung der betrieblichen (Ausbildungs-)Realität im Berufsfeld Bautechnik werden Konsequenzen für eine effektive Lesekompetenzförderung formuliert. Dabei erscheint insbesondere die Diskrepanz zwischen pädagogischer Intention und geringer Relevanzzuschreibung als zentrale didaktische Herausforderung. Darüber hinaus zeigt sich die Bedeutung einer adressaten- und domänenspezifischen Förderung von Lesekompetenz. Schlüsselwörter: Berufliche Bildung, gewerblich-technische Berufe, Berufsfeld Bautechnik, Lesekompetenz, Förderung von Lesekompetenz
description: Journal of Technical Education (JOTED), Bd. 3 Nr. 1 (2015): Journal of Technical Education (JOTED)
High-fidelity trapped-ion quantum logic using near-field microwaves
Creators: name: Harty, T. P.
name: Sepiol, M. A.
name: Allcock, D. T. C.
name: Ballance, C. J.
name: Tarlton, J. E.
name: Lucas, D. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate a two-qubit logic gate driven by near-field microwaves in a room-temperature microfabricated ion trap. We measure a gate fidelity of 99.7(1)\%, which is above the minimum threshold required for fault-tolerant quantum computing. The gate is applied directly to $^{43}$Ca$^+$ "atomic clock" qubits (coherence time $T_2^*\approx 50\,\mathrm{s}$) using the microwave magnetic field gradient produced by a trap electrode. We introduce a dynamically-decoupled gate method, which stabilizes the qubits against fluctuating a.c.\ Zeeman shifts and avoids the need to null the microwave field.
A Bayesian semi-parametric approach for modeling memory decay in dynamic social networks
Creators: name: Arena, Giuseppe
name: Mulder, Joris
name: Leenders, Roger Th. A. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: In relational event networks, the tendency for actors to interact with each other depends greatly on the past interactions between the actors in a social network. Both the quantity of past interactions and the time that elapsed since the past interactions occurred affect the actors' decision-making to interact with other actors in the network. Recently occurred events generally have a stronger influence on current interaction behavior than past events that occurred a long time ago--a phenomenon known as "memory decay". Previous studies either predefined a short-run and long-run memory or fixed a parametric exponential memory using a predefined half-life period. In real-life relational event networks however it is generally unknown how the memory of actors about the past events fades as time goes by. For this reason it is not recommendable to fix this in an ad hoc manner, but instead we should learn the shape of memory decay from the observed data. In this paper, a novel semi-parametric approach based on Bayesian Model Averaging is proposed for learning the shape of the memory decay without requiring any parametric assumptions. The method is applied to relational event history data among socio-political actors in India.
description: 30 pages
The Potential of a TeV-Scale Muon-Ion Collider
Creators: name: Acosta, Darin
name: Barberis, Emanuela
name: Hurley, Nicholas
name: Li, Wei
name: Colin, Osvaldo Miguel
name: Wang, Yijie
name: Wood, Darien
name: Zuo, Xunwu
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We propose the development of a novel muon-proton and muon-nucleus collider facility at the TeV scale that is capable of performing precision deep inelastic scattering measurements in new regimes and providing a rich program in nuclear and particle physics. Such a facility could seed, or leverage, the development of a muon-antimuon collider and make use of the existing hadron accelerator infrastructure when sited at a facility such as Brookhaven National Laboratory, Fermilab, or CERN. We discuss the possible energy and luminosity design parameters for several collider configurations, and illustrate the science potential with several studies on deep inelastic scattering kinematics, Higgs and vector boson production, top quark production, and beyond Standard Model leptoquark production. Detector design considerations and a possible road map toward development are also given.
description: contribution to Snowmass 2021, published in JINST
Effects of semi-rigid beam-to-column connections on the structural behaviour and design of multi-storey frames
Creators: name: Pau, Andrew Uong Yeo.
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.
Simulated spatial and temporal dependence of chromium concentration in pure Fe and Fe-14%Cr under high dpa ion irradiation
Creators: name: Vortler, K.
name: Mamivand, M.
name: Barnard, L.
name: Szlufarska, I.
name: Garner, F. A.
name: Morgan, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work we develop an ab initio informed rate theory model to track the spatial and temporal evolution of implanted ions (Cr+) in Fe and Fe-14%Cr during high dose irradiation. We focus on the influence of the specimen surface, the depth dependence of ion-induced damage, the damage rate, and the consequences of ion implantation, all of which influence the depth dependence of alloy composition evolving with continued irradiation. We investigate chemical segregation effects in the material by considering the diffusion of the irradiation-induced defects. Moreover, we explore how temperature, grain size, grain boundary sink strength, and defect production bias modify the resulting distribution of alloy composition. Our results show that the implanted ion profile can be quite different than the predicted SRIM implantation profile due to radiation enhanced transport and segregation.
NLO Multijet Merging for Higgs Production Beyond the VBF Approximation
Creators: name: Chen, Tinghua
name: Figy, Terrance M.
name: Plätzer, Simon
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present results of the simulation of electroweak Higgs boson production at the Large Hadron Collider using both the NLO multijet merging and NLO matching frameworks provided by the general purpose event generator Herwig 7. For the simulation of the hard scattering processes, we use the HJets library for the full calculation and VBFNLO for the approximate calculation to compute the $2\to h+n$ amplitudes at tree-level with $n=2,3,4$ and at one-loop with $n=2,3$.
description: accepted version, 13 pages, 8 figures
Search for exoplanets and brown dwarfs with VLBI
Creators: name: Katarzynski, K.
name: Gawronski, M.
name: Gozdziewski, K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The main aim of this work is to estimate possible radio GHz emission of extrasolar planets and brown dwarfs and to check if such radiation can be detected by Very Large Baseline Interferometers (VLBI). In the estimation we assume that the emission may originate in processes similar to those observed in the Jupiter system. The frequency of the radio emission that is produced in this system depends mostly on the magnetic field strength. Jupiter's magnetic field ($\sim 9$ G on average) allows for radiation from kHz frequencies up to 40 MHz. This is well below the frequency range of VLBI. However, it was demonstrated that the magnetic field strength in massive and young object may be up to two orders of magnitude higher than for Jupiter, which is especially relevant for planets around short-lived A type stars. This should extend the range of the emission up to GHz frequencies. We calculated expected flux densities of radio emission for a variety of hypothetical young planetary systems. We analysed two different emission scenarios, and found that the radiation induced by moons (process similar to Jupiter-Io interactions) appears to be less efficient than the emission generated by a stellar wind on a planetary magnetosphere. We also estimated hypothetical emission of planets and brown dwarfs located around relatively young and massive main sequence A-type stars. Our results show that the emission produced by stellar winds could be detected by currently operating VLBI networks.
description: 11 pages, 5 figures
All-optical valley switch and clock of electronic dephasing
Creators: name: Silva, Rui E. F.
name: Ivanov, Misha
name: Jiménez-Galán, Álvaro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: 2D materials with broken inversion symmetry posses an extra degree of freedom, the valley pseudospin, that labels in which of the two energy-degenerate crystal momenta, K or K', the conducting carriers are located. It has been shown that shining circularly-polarized light allows to achieve close to $100\%$ of valley polarization, opening the way to valley-based transistors. Yet, switching of the valley polarization is still a key challenge for the practical implementation of such devices due to the short coherence lifetimes. Recent progress in ultrashort laser technology now allows to produce trains of attosecond pulses with controlled phase and polarization between the pulses. Taking advantage of such technology, we introduce a coherent control protocol to turn on, off and switch the valley polarization at faster timescales than electronic and valley decoherence, that is, an ultrafast optical valley switch. We theoretically demonstrate the protocol for hBN and MoS$_2$ monolayers calculated from first principles. Additionally, using two time-delayed linearly-polarized pulses with perpendicular polarization, we show that we can extract the electronic dephasing time $T_2$ from the valley Hall conductivity.
description: 8 pages; 4 figures
Lernbezogenes Mediennutzungsverhalten von Studierenden der Ingenieurswissenschaften. Eine geschlechterkomparative Studie.
Creators: name: Karapanos, Marios
name: Fendler, Jan
Publisher: name: Journal of Technical Education (JOTED)
Year: 2015

description: Zunehmend besteht das Interesse, mehr Frauen in den Ingenieurswissenschaften auszubilden bzw. stärker zu fördern. Gleichzeitig nehmen elektronische Lernangebote in den ingenieurwissenschaftlichen Studiengängen eine immer bedeutendere Rolle ein. Offen bleibt, wie E-Learning dazu beitragen kann, die Studierbarkeit und Attraktivität von Ingenieursstudiengängen explizit für Frauen zu erhöhen. Der vorliegende Beitrag vergleicht daher das lernbezogene Mediennutzungsverhalten von Studentinnen und Studenten der Ingenieurswissenschaften. Die Ergebnisse zeigen, dass geschlechtsspezifische Unterschiede bestehen, die bei der Konzeption didaktischer Settings berücksichtigt werden sollten. In wesentlichen Aspekten des Lernens mit Neuen Medien unterscheiden sich Ingenieursstudentinnen jedoch kaum oder nicht von ihren männlichen Kommilitonen. Schlüsselwörter: Gendergerechte Lehre, E-Learning, Neue Medien, Computerkompetenz, E-Learning-Affinität Learning Related Media Consumption Behavior Of Engineering Students. A Gender Comparative Study Abstract There is a rising interest in educating and supporting women in engineering sciences. At the same time e-learning plays a more and more important role in engineering studies. It is still to be answered in what way e-learning can help to enhance the attractiveness of engineering sciences explicitly to women and if it might offer them specific help to finish an engineering study program in the given time. Therefore the present article compares the characteristics of male and female students of engineering studies using media in learning settings. The results show that gender-differences exist, that should be regarded when didactic settings are planned. Yet, considering the core aspects of learning with new media female students of engineering studies do not differ, or at least only marginally, from their male fellow students. Keywords: gender-sensitive teaching, e-learning, new media, digital competence, e-learning affinity
description: Journal of Technical Education (JOTED), Bd. 3 Nr. 1 (2015): Journal of Technical Education (JOTED)
Assessments of magnitude and contributing factors of medication administration error among nurses in tertiary hospitals, Addis Ababa, Ethiopia, 2018.
Creators: name: Wondmieneh, Adam
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: Background: Unsafe medication practices are the leading causes of avoidable patient harm in healthcare systems across the world. Errors made during medication administration are the commonest one. Nurses play a significant role in the occurrence as well as in the preventions of medication administration errors. However, only a few relevant studies were conducted in Ethiopia to assess this problem. Objective: To assess the magnitude and contributing factors of medication administration error among nurses in tertiary care hospitals, Addis Ababa, Ethiopia, 2018. Methods: A hospital-based, cross-sectional study design was conducted in Addis Ababa tertiary hospitals. A simple random sampling method was used to select 303 study participants. The data were collected using structured and pre-tested self-administered questionnaire; and semi-structured and pre-tested observational checklist from February to March 2018. The nurses were observed while administering medications continuously for 48 hours. The data were analyzed using descriptive and analytical statistics and binary logistic regression was done to identify factors associated with medication administration errors. P-value < 0.05 was considered statistically significant. The study findings were presented by using tables, figures, and charts. Result: A total of 298 nurses participated in this study with a 98.3 % response rate. From those respondents 203 (68.1%) nurses made medication administration error in the last 12 months. There is a significant association between medication administration errors and lack of training [AOR=3.16; 95% CI (1.67,6)], unavailability of guideline [AOR=2.07; 95% CI (1.06,4.06)], work experience [AOR = 6.48; 95% CI (1.32,31.78)], interruption during medication administration [AOR = 2.42, 95 % CI (1.3,4.49)] and night duty shift [AOR = 5, 95 % CI (1.82, 13.78)] at p-value <0.05. Conclusion and recommendation: Medication administration error in Addis Ababa tertiary hospitals was highly prevalent. This study showed that there is a significant association between medication administration error and factors such as work experience, night shift, lack of training, unavailability of guideline and interruption during medication administration. Develop appropriate guidelines for safe medication administration, providing continuous training, minimizing distracters during medication administration and retaining experienced nurses would be helpful for minimizing medication administration errors.
Relation Extraction as Open-book Examination: Retrieval-enhanced Prompt Tuning
Creators: name: Chen, Xiang
name: Li, Lei
name: Zhang, Ningyu
name: Tan, Chuanqi
name: Huang, Fei
name: Si, Luo
name: Chen, Huajun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Pre-trained language models have contributed significantly to relation extraction by demonstrating remarkable few-shot learning abilities. However, prompt tuning methods for relation extraction may still fail to generalize to those rare or hard patterns. Note that the previous parametric learning paradigm can be viewed as memorization regarding training data as a book and inference as the close-book test. Those long-tailed or hard patterns can hardly be memorized in parameters given few-shot instances. To this end, we regard RE as an open-book examination and propose a new semiparametric paradigm of retrieval-enhanced prompt tuning for relation extraction. We construct an open-book datastore for retrieval regarding prompt-based instance representations and corresponding relation labels as memorized key-value pairs. During inference, the model can infer relations by linearly interpolating the base output of PLM with the non-parametric nearest neighbor distribution over the datastore. In this way, our model not only infers relation through knowledge stored in the weights during training but also assists decision-making by unwinding and querying examples in the open-book datastore. Extensive experiments on benchmark datasets show that our method can achieve state-of-the-art in both standard supervised and few-shot settings. Code are available in https://github.com/zjunlp/PromptKG/tree/main/research/RetrievalRE.
description: Accepted by SIGIR 2022, short paper
$p$-harmonic mappings between metric spaces
Creators: name: Guo, Chang-Yu
name: Huang, Manzi
name: Wang, Zhuang
name: Xu, Haiqing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 58E20, 46E35

description: In this paper, we solve the Dirichlet problem for Sobolev maps between singular metric spaces that extends the corresponding result of Guo and Wenger [Comm. Anal. Geom. 2020]. The main new ingredient in our proofs is a suitable extension of the theory of trace for metric valued Sobolev maps developed by Korevaar and Schoen [Comm. Anal. Geom. 1993]. We also develop a theory of trace in the borderline case, which investigates a sharp condition to characterize the existence of traces.
Axial dispersion in a tubular coal hydrogenation reactor
Creators: name: Pittard, Richard Ian.
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.