cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Layer-dependent exciton polarizability and the brightening of dark excitons in few-layer black phosphorus
Creators: name: Lei, Yuchen
name: Ma, Junwei
name: Luo, Jiaming
name: Huang, Shenyang
name: Yu, Boyang
name: Song, Chaoyu
name: Xing, Qiaoxia
name: Wang, Fanjie
name: Xie, Yuangang
name: Zhang, Jiasheng
name: Mu, Lei
name: Ma, Yixuan
name: Wang, Chong
name: Yan, Hugen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The evolution of excitons from 2D to 3D is of great importance in photo-physics, yet the layer-dependent exciton polarizability has not been investigated in 2D semiconductors. Here, we determine the exciton polarizabilities for 3- to 11-layer black phosphorus-a direct bandgap semiconductor regardless of the thickness-through frequency-resolved photocurrent measurements on dual-gate devices and unveil the carrier screening effect in relatively thicker samples. By taking advantage of the broadband photocurrent spectra, we are also able to reveal the exciton response for higher-index subbands under the gate electrical field. Surprisingly, dark excitons are brightened with intensity even stronger than the allowed transitions above certain electrical field. Our study not only sheds light on the exciton evolution with sample thickness, but also paves a way for optoelectronic applications of few-layer BP in modulators, tunable photodetectors, emitters and lasers.
description: 30 pages, 4 figures
Virtuelle Umgebungen zur Analyse der mentalen Rotationsfähigkeit
Creators: name: Ariali, Sunita
name: Zinn, Bernd
Publisher: name: Journal of Technical Education (JOTED)
Year: 2021

description: Moderne virtuelle Umgebungen bieten die Option, komplexe 3-D-Modelle aus multiplen Perspektiven erfahrbar zu machen und können damit grundsätzlich auch genutzt werden, um eine adaptive Förderung der mentalen Rotationsfähigkeit von Auszubildenden zu ermöglichen. Bislang weiß man aber zu den Einsatzmöglichkeiten virtueller Umgebungen zur Analyse und Förderung der mentalen Rotationsfähigkeit, die einen zentralen Teil des räumlichen Vorstellungsvermögens einer Person bildet, wenig. Der vorliegende Beitrag beschäftigt sich im Rahmen einer grundlagenorientierten hypothesenprüfenden Studie mit der Erfassung der mentalen Rotationsfähigkeit von Jugendlichen (N = 213) in Abhängigkeit einer technologischen Testvariation. Die Befunde der experimentellen Studie belegen einen Zusammenhang zwischen der fluiden Intelligenz und der mentalen Rotationsfähigkeit. Dieser Zusammenhang wird von der Immersivität der Umgebung sowie vom Intuitive-Use der Technologie beeinflusst. Der Geschlechterunterschied in der mentalen Rotationsfähigkeit, die in den computerbasierten 3-D-Umgebungen gemessen wird, fällt deutlich schwächer aus als der Geschlechterunterschied in der mentalen Rotationsfähigkeit, die mittels herkömmlicher Paper-Pencil-Tests erfasst wird. Zudem deuten die Befunde darauf hin, dass die virtuellen Testumgebungen vorteilhaft für kognitiv schwächere Schülerinnen und Schüler sein können.
description: Journal of Technical Education (JOTED), Bd. 6 Nr. 4 (2018): Journal of Technical Education (JOTED)
Deep Reinforcement Learning for RIS-Assisted FD Systems: Single or Distributed RIS?
Creators: name: Faisal, Alice
name: Al-Nahhal, Ibrahim
name: Dobre, Octavia A.
name: Ngatched, Telex M. N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper investigates reconfigurable intelligent surface (RIS)-assisted full-duplex multiple-input single-output wireless system, where the beamforming and RIS phase shifts are optimized to maximize the sum-rate for both single and distributed RIS deployment schemes. The preference of using the single or distributed RIS deployment scheme is investigated through three practical scenarios based on the links' quality. The closed-form solution is derived to optimize the beamforming vectors and a novel deep reinforcement learning (DRL) algorithm is proposed to optimize the RIS phase shifts. Simulation results illustrate that the choice of the deployment scheme depends on the scenario and the links' quality. It is further shown that the proposed algorithm significantly improves the sum-rate compared to the non-optimized scenario in both single and distributed RIS deployment schemes. Besides, the proposed beamforming derivation achieves a remarkable improvement compared to the approximated derivation in previous works. Finally, the complexity analysis confirms that the proposed DRL algorithm reduces the computation complexity compared to the DRL algorithm in the literature.
description: arXiv admin note: text overlap with arXiv:2110.04859
Praxisbericht: Kompetenzen für den Ingenieursberuf - eine Absolvierendenstudie zur Wirksamkeit von problem- und projektbasierten Lehrformaten
Creators: name: Balve, Patrick
name: Ebert, Lena
Publisher: name: Journal of Technical Education (JOTED)
Year: 2020

description: Im Rahmen einer Onlinebefragung unter bereits berufstätigen Bachelorabsolventinnen und -absolventen von drei ingenieurwissenschaftlichen Studiengängen der Hochschule Heilbronn wurde erhoben, welche Kompetenzanforderungen in der Berufspraxis relevant sind und welche dieser Anforderungen durch drei unterschiedliche problem- und projektbasierte Lehrformate besonders gefördert werden. Die Antworten auf die Frage der berufsrelevanten Anforderungen bekräftigt zunächst die hohe Bedeutung der Methoden- und Selbstkompetenzen, die im Durchschnitt als wichtiger eingeschätzt werden, als Fach- und Sozialkompetenzen. Ferner zeigt sich in der Untersuchung, dass in allen drei Lehrformaten in erster Linie Methodenkompetenzen gestärkt werden. An zweiter Stelle stehen Fach- und anschließend Selbstkompetenzen.
description: Journal of Technical Education (JOTED), Bd. 8 Nr. 2 (2020): Journal of Technical Education (JOTED)
Universal growth scheme for entanglement-ready quantum dots
Creators: name: Skiba-Szymanska, Joanna
name: Stevenson, R. Mark
name: Varnava, Christiana
name: Felle, Martin
name: Huwer, Jan
name: Müller, Tina
name: Bennett, Anthony J.
name: Lee, James P.
name: Farrer, Ian
name: Krysa, Andrey
name: Spencer, Peter
name: Goff, Lucy E.
name: Ritchie, David A.
name: Heffernan, Jon
name: Shields, Andrew J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Efficient sources of individual pairs of entangled photons are required for quantum networks to operate using fibre optic infrastructure. Entangled light can be generated by quantum dots (QDs) with naturally small fine-structure-splitting (FSS) between exciton eigenstates. Moreover, QDs can be engineered to emit at standard telecom wavelengths. To achieve sufficient signal intensity for applications, QDs have been incorporated into 1D optical microcavities. However, combining these properties in a single device has so far proved elusive. Here, we introduce a growth strategy to realise QDs with small FSS in the conventional telecom band, and within an optical cavity. Our approach employs droplet-epitaxy of InAs quantum dots on (001) substrates. We show the scheme improves the symmetry of the dots by 72%. Furthermore, our technique is universal, and produces low FSS QDs by molecular beam epitaxy on GaAs emitting at ~900nm, and metal-organic vapour phase epitaxy on InP emitting at 1550 nm, with mean FSS 4x smaller than for Stranski-Krastanow QDs.
description: 13 pages, 4 figues
Spectroscopic and Photometric Study of the new $δ$ Scuti Star ASAS J063309+1810.8
Creators: name: Nouh, Mohamed I.
name: Abdel-Sabour, Mohamed
name: Shokry, Ahmed
name: Hamed, Gamal M.
name: Fouda, Diaa A.
name: Takey, Ali
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present BVR observations and low-resolution spectra collected by the Kottamia Astronomical Observatory 1.88 m telescope (KAO) for the new pulsating star ASAS J063309+1810.8 (hereafter it will be called ASAS06+18). The photometric analysis revealed that the star is a $δ$ Scuti star with low amplitude (a=0.054-0.099 in V mag.) and a short period (102.604 min). Fourier analysis of the light curves reveals the fundamental mode with two harmonics. The photometric analysis yielded a new value of the updated frequency of 13.0035232 cd-1 with an amplitude of 49.93 mmag at phases 0.326 and S/N 21.75 and to two frequencies (20.2099237cd-1, 5.9130945cd-1). Given the available data, 37 new times of maximum light are presented, and an updated ephemeris for the star and its O-C data. Assuming its period decreases and changes smoothly, a new value of (1/P)dP/dt is determined. We calculated the effective temperature and surface gravity as Teff=7125+- 250 K and log g=4.0+-0.2 dex from model atmosphere analysis of the star's spectra at different phases. The bolometric magnitude Mbol=2.798 (0.016), radius R=1.577(0.077) R_sun, luminosity L=5.714(1.066) L_sun, the mass is M=1.595 M_sun and pulsation constant Q=0{m}.0338(0.0003). The star's locations in the evolutionary mass-luminosity and mass-radius relationships are discussed.
Theoretical and experimental determination of the critical stresses in railroad rail
Creators: name: Tew, Graham Peter.
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.
ELIPSS Sample and Survey Management system Factsheet
Creators: name: Michaud, Geneviève
Publisher: name: Zenodo
Year: 2018
Subjects: social sciences
mobile survey
software development
online survey
CAWI
Python (programming language)
Django (framework)

description: A short fact sheet describing the software suite that has been designed and developed in house for the ELIPSS project at Sciences Po. Please refer to the project website for more context: http://quanti.dime-shs.sciences-po.fr/en/project/
description: Funding: Agence Nationale de la Recherche (FR) grant number: ANR-10-EQPX-19-01
Bayesian inference on dynamic linear models of day-to-day origin-destination flows in transportation networks
Creators: name: Pitombeira-Neto, Anselmo Ramalho
name: Loureiro, Carlos Felipe Grangeiro
name: Carvalho, Luis Eduardo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Estimation of origin-destination (OD) demand plays a key role in successful transportation studies. In this paper, we consider the estimation of time-varying day-to-day OD flows given data on traffic volumes in a transportation network for a sequence of days. We propose a dynamic linear model (DLM) in order to represent the stochastic evolution of OD flows over time. DLM's are Bayesian state-space models which can capture non-stationarity. We take into account the hierarchical relationships between the distribution of OD flows among routes and the assignment of traffic volumes on links. Route choice probabilities are obtained through a utility model based on past route costs. We propose a Markov chain Monte Carlo algorithm, which integrates Gibbs sampling and a forward filtering backward sampling technique, in order to approximate the joint posterior distribution of mean OD flows and parameters of the route choice model. Our approach can be applied to congested networks and in the case when data are available on only a subset of links. We illustrate the application of our approach through simulated experiments on a test network from the literature.
description: 22 pages, 8 figures
Praxisbericht: Fachwissenschaft und Berufspraxis verbunden durch kollaboratives Peer Teaching im Studium des Lehramts an Beruflichen Schulen
Creators: name: Bartsch, Katharina
name: Ewald, Ake
name: Herzog, Dirk
Publisher: name: Journal of Technical Education (JOTED)
Year: 2020

description: Die Fachsystematik der beruflichen Fachrichtungen im Studium des Lehramts an Beruflichen Schulen steht in einem anhaltenden Widerspruch zu der Handlungsorientierung an den Schulen. Jedoch ist es aufgrund der Anforderungen an einzelne Fachrichtungen nicht immer einfach, diesen aufzulösen. In dieser Studie wird ein didaktisches Konzept vorgestellt, welches mittels eines Peer-Teaching-Ansatzes die Fachsystematik der fachwissenschaftlichen Lehrinhalte durch auf den späteren Lehrerberuf bezogene Lehrmethoden ergänzt. Das Konzept wurde in zwei Lehrveranstaltungen der beruflichen Fachrichtung Metalltechnik in Hamburg zur Anwendung gebracht und evaluiert. Es hat zu einer erhöhten Motivation und Selbstständigkeit der Studierenden bei gleichbleibender akademischer Leistung geführt.
description: Journal of Technical Education (JOTED), Bd. 8 Nr. 2 (2020): Journal of Technical Education (JOTED)
Resonance contribution of scalar color octet to $t \bar{t}$ production at the LHC in the minimal four color quark-lepton symmetry model
Creators: name: Frolov, I. V.
name: Martynov, M. V.
name: Smirnov, A. D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The scalar color octet contribution to the resonance $t\bar{t}$-pair production at the LHC is calculated and analysed with account of the one loop effective two gluon vertex. It is shown that this contribution from the scalar color octet $F_2$ predicted by the minimal model with the four color quark-lepton symmetry is for $\sqrt{s}=13$ TeV of about a few percents for $750 < m_{F_2} < 1800$ GeV and can exceed 10% for $400 < m_{F_2} < 750$ GeV. It is also pointed out that the search for the scalar octet $F_2$ as the resonance in the dijet mass spectra seems to be difficult because of the smallness of its one loop effective two gluon interaction.
description: 12 pages, 5 figures, accepted for publication in Modern Physics Letters A
Acoustic analysis of the knee joint in the study of osteoarthritis detection during walking
Creators: name: Yiallourides, Costas
Publisher: name: Imperial College London
Year: 2019

description: This thesis investigates the potential of non-invasive detection of knee Osteoarthritis (OA) using the sounds emitted by the knee joint during walking and captured by a single microphone. This is a novel application since, until now, there are no other methods that considered this type of signals. Clinical detection of knee OA relies on imaging techniques such as X-radiology and Magnetic Resonance Imaging. Some of these methods are expensive and impractical while others pose health risks due to radiation. Knee sounds on the other hand may offer a quick, practical and cost-effective alternative for the detection of the disease. In this thesis, the knee sound signal structure is investigated using signal processing methods for information extraction from the time, frequency, cepstral and modulation domains. Feature representations are obtained and their discriminant properties are studied using statistical methods such as the Bhattacharyya distance and supervised learning techniques such as Support Vector Machine. From this work, a statistical feature parameterisation is proposed and its efficacy for the task of healthy vs OA knee condition classification is investigated using a comprehensive experimental framework proposed in this thesis. Feature-based representations that incorporate spatiotemporal information using gait pattern variables, were also investigated for classification. Using the waveform characteristics of the acoustic pulse events detected in the signal, such representations are proposed and evaluated. This approach utilised a novel stride detection and segmentation algorithm that is based on dynamic programming and is also proposed in the thesis. This algorithm opens up potential applications in other research fields such as gait analysis.
A First Look at SVCB and HTTPS DNS Resource Records in the Wild
Creators: name: Zirngibl, Johannes
name: Sattler, Patrick
name: Carle, Georg
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The Internet Engineering Task Force is standardizing new DNS resource records, namely SVCB and HTTPS. Both records inform clients about endpoint and service properties such as supported application layer protocols, IP address hints or Encrypted Client Hello (ECH) information. Therefore, they allow clients to reduce required DNS queries and potential retries during connection establishment and thus help to improve the quality of experience and privacy of the client. The latter is achieved by reducing visible meta-data, which is further improved with encrypted DNS and ECH. The standardization is in its final stages and companies announced support, e.g., Cloudflare and Apple. Therefore, we provide the first large-scale overview of actual record deployment by analyzing more than 400 M domains. We find 3.96 k SVCB and 10.5 M HTTPS records. As of March 2023, Cloudflare hosts and serves most domains, and most records only contain Application-Layer Protocol Negotiation (ALPN) and IP address hints. Besides Cloudflare, we see adoption by a variety of authoritative name servers and hosting providers indicating increased adoption in the near future. Lastly, we can verify the correctness of records for more than 93 % of domains based on three application layer scans.
description: Presented at the 8th International Workshop on Traffic Measurements for Cybersecurity (WTMC 2023)
Free energy and entropy production rate for a Brownian particle that walks on overdamped medium
Creators: name: Taye, Mesfin Asfaw
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We derive general expressions for the free energy, entropy production and entropy extraction rates for a Brownian particle that walks in a viscous medium where the dynamics of its motion is governed by the Langevin equation. It is shown that when the system is out of equilibrium, it constantly produces entropy and at the same time extracts entropy out of the system. Its entropy production and extraction rates decrease in time and saturate to a constant value. In long time limit, the rate of entropy production balances the rate of entropy extraction and at equilibrium both entropy production and extraction rates become zero. Moreover, considering different model systems, not only we investigate how various thermodynamic quantities behave in time but also we discuss the fluctuation theorem in detail.
description: arXiv admin note: text overlap with arXiv:1507.01791
On chiral magnetic effect in Weyl superfluid 3He-A
Creators: name: Volovik, G. E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the theory of the chiral anomaly in relativistic quantum field theories (RQFT) some results depend on regularization scheme at ultraviolet. In the chiral superfluid 3He-A, which contains two Weyl points and also experiences the effects of chiral anomaly, the "trans-Planckian" physics is known and the results can be obtained without regularization. We discuss this on example of the chiral magnetic effect (CME), which has been observed in 3He-A in 90's. There are two forms of the contribution of the CME to the Chern-Simons term in free energy, perturbative and non-perturbative. The perturbative term comes from the fermions living in the vicinity of the Weyl point, where the fermions are "relativistic" and obey the Weyl equation. The non-perturbative term originates from the deep vacuum, being determined by the separation of the two Weyl points. Both terms are obtained using the Adler-Bell-Jackiw equation for chiral anomaly, and both agree with the results of the microscopic calculations in the "trans-Planckian" region. Existence of the two nonequivalent forms of the Chern-Simons term demonstrates that the results obtained within the RQFT depend on the specific properties of the underlying quantum vacuum and may reflect different physical phenomena in the same vacuum.
description: 5 pages, 1 figure
Editorial: Hybride Lernlandschaften im beruflichen Unterricht
Creators: name: Pittich, Daniel
name: Tenberg, Ralf
Publisher: name: Journal of Technical Education (JOTED)
Year: 2020

description: Die Digitalisierung und der Einsatz digitaler Medien im beruflichen Unterricht hat nicht zuletzt durch die Corona-Pandemie und die damit verbundenen Einschränkungen des Präsentunterricht einen erneuten massiven Anschub erfahren. Mit der Implementierung von digitalen Medien und digitalen Lernumgebungen stellen sich jedoch neue Herausforderungen, die sich sowohl auf die konzeptionelle Unterrichtsgestaltung und deren mediale Umsetzung auswirkt, als auch auf die Bereitstellung und Handhabung der notwendigen digitalen Infrastruktur mit allen diesbezüglichen Veränderungen bzw. Erweiterungen in der Lehr-Lern-Interaktion. Um diesen Herausforderungen zu begegnen, wurde ein Ansatz für Lehr-Lernarrangements und -räume erarbeitet, der die Grundideen und Prämissen eines kompetenzorientierten Präsenzunterrichts mit digitalen Lernumgebungen verzahnt und konsequent umsetzt. Dieser wird als Hybride Lernlandschaften bezeichnet und befindet sich aktuell in einer Erprobungsphase in den Bundesländern Bayern und Hessen.
description: Journal of Technical Education (JOTED), Bd. 8 Nr. 2 (2020): Journal of Technical Education (JOTED)
A new approach to the design of an anaesthetic ventilator
Creators: name: Wende, David.
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.
Delocalization effects, entanglement entropy and spectral collapse of boson mixtures in a double well
Creators: name: Lingua, F.
name: Mazzarella, G.
name: Penna, V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the ground-state properties of a two-species condensate of interacting bosons in a double-well potential. Each atomic species is described by a two-space-mode Bose-Hubbard model. The coupling of the two species is controlled by the interspecies interaction $W$. To analyze the ground state when $W$ is varied in both the repulsive ($W>0$) and the attractive ($W<0$) regime, we apply two different approaches. First we solve the problem numerically i) to obtain an exact description of the ground-state structure and ii ) to characterize its correlation properties by studying (the appropriate extensions to the present case of) the quantum Fisher information, the coherence visibility and the entanglement entropy as functions of $W$. Then we approach analytically the description of the low-energy scenario by means of the Bogoliubov scheme. In this framework the ground-state transition from delocalized to localized species (with space separation for $W>0$, and mixing for $W<0$) is well reproduced. These predictions are qualitatively corroborated by our numerical results. We show that such a transition features a spectral collapse reflecting the dramatic change of the dynamical algebra of the four-mode model Hamiltonian.
description: 20 pages, 9 figures
Merkmale dualer Berufsausbildung in den internationalen Angeboten deutscher Bildungsanbieter
Creators: name: Faßbender, Uwe
name: Pilz, Matthias
Publisher: name: Journal of Technical Education (JOTED)
Year: 2020

description: Der Beitrag analysiert Aktivitäten deutscher Bildungsanbieter vor dem Hintergrund eines möglichen impliziten Policy Transfers dualer Berufsausbildung ins Ausland. Im Rahmen mehrerer Einzelfallstudien wurden die zentralen didaktischen Merkmale von technischen Lernsystemen deutscher Bildungsanbieter sowie deren Tätigkeiten auf dem internationalen Bildungsmarkt erhoben. Die Ergebnisse zeigen, dass die Lernsysteme typisch deutsche Ausbildungselemente auf der Mikroebene beinhalten und diese somit auf eine internationale Ebene transferiert werden.
description: Journal of Technical Education (JOTED), Bd. 8 Nr. 2 (2020): Journal of Technical Education (JOTED)
Requirements Quality Research: a harmonized Theory, Evaluation, and Roadmap
Creators: name: Frattini, Julian
name: Montgomery, Lloyd
name: Fischbach, Jannik
name: Mendez, Daniel
name: Fucci, Davide
name: Unterkalmsteiner, Michael
Publisher: name: arXiv
Year: 2023
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: High-quality requirements minimize the risk of propagating defects to later stages of the software development life cycle. Achieving a sufficient level of quality is a major goal of requirements engineering. This requires a clear definition and understanding of requirements quality. Though recent publications make an effort at disentangling the complex concept of quality, the requirements quality research community lacks identity and clear structure which guides advances and puts new findings into an holistic perspective. In this research commentary we contribute (1) a harmonized requirements quality theory organizing its core concepts, (2) an evaluation of the current state of requirements quality research, and (3) a research roadmap to guide advancements in the field. We show that requirements quality research focuses on normative rules and mostly fails to connect requirements quality to its impact on subsequent software development activities, impeding the relevance of the research. Adherence to the proposed requirements quality theory and following the outlined roadmap will be a step towards amending this gap.
description: Requirements Eng (2023)
Deep Mutual Learning across Task Towers for Effective Multi-Task Recommender Learning
Creators: name: Ren, Yi
name: Du, Ying
name: Wang, Bin
name: Zhang, Shenzheng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Recommender systems usually leverage multi-task learning methods to simultaneously optimize several objectives because of the multi-faceted user behavior data. The typical way of conducting multi-task learning is to establish appropriate parameter sharing across multiple tasks at lower layers while reserving a separate task tower for each task at upper layers. Since the task towers exert direct impact on the prediction results, we argue that the architecture of standalone task towers is sub-optimal for promoting positive knowledge sharing. Accordingly, we propose the framework of Deep Mutual Learning across task towers, which is compatible with various backbone multi-task networks. Extensive offline experiments and online AB tests are conducted to evaluate and verify the proposed approach's effectiveness.
description: 6 pages
Overlay Secondary Spectrum Sharing with Independent Re-attempts in Cognitive Radios
Creators: name: Kumar, Muthukrishnan Senthil
name: Dadlani, Aresh
name: Kim, Kiseon
name: Afolabi, Richard O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Performance (cs.PF)
subject: Networking and Internet Architecture (cs.NI)
subject: Probability (math.PR)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: C.2.1; C.4; G.3

description: Opportunistic spectrum access (OSA) is a promising reform paradigm envisioned to address the issue of spectrum scarcity in cognitive radio networks (CRNs). While current models consider various aspects of the OSA scheme, the impact of retrial phenomenon in multi-channel CRNs has not yet been analyzed. In this work, we present a continuous-time Markov chain (CTMC) model in which the blocked/preempted secondary users (SUs) enter a finite retrial group (or orbit) and re-attempt independently for service in an exponentially distributed random manner. Taking into account the inherent retrial tendency of SUs, we numerically assess the performance of the proposed scheme in terms of dropping probability and throughput of SUs.
description: IEEE Sarnoff Symposium 2016
Beteiligungsformate für Eltern zur Unterstützung einer gendersensiblen Berufsorientierung im MINT-Bereich
Creators: name: Vieback, Linda
name: Lonzig, Albrecht
name: Brämer, Stefan
Publisher: name: Journal of Technical Education (JOTED)
Year: 2020

description: Die Berufs- und Studienwahl ist als Teil des Sozialisationsprozesses eng mit der Sozialisation innerhalb der Familie verbunden. In der Vergangenheit wurde diesbezüglich dem Einfluss der Eltern oftmals zu wenig Beachtung geschenkt. Das vom BMBF geförderte For-schungsprojekt „investMINT - Familiärer Einfluss auf das MINT-Interesse von Töchtern und Konzeption aktiver Beteiligungsformate zur gendersensiblen Studien- und Berufsorientierung“ untersucht dazu u. a. Wünsche und Vorstellungen von Eltern, um ihre Töchter im Berufs- und Studienorientierungsprozess besser unterstützen zu können. Ziel ist, neue Erkenntnisse über die Rolle der Eltern im Prozess der Berufs- und Studienorientierung zu gewinnen und dadurch neue, interaktive Unterstützungsformate für eine gendersensible Berufsorientierung im MINT-Bereich zu entwickeln.
description: Journal of Technical Education (JOTED), Bd. 8 Nr. 1 (2020): Journal of Technical Education (JOTED)
Der Einfluss der Praxisphase in einem technischen Lehr-Lern-Labor auf die subjektiven Theorien Lehramtsstudierender - Entwicklung und Erprobung eines reflexionsfördernden Settings unter Verwendung der Repertory-Grid-Methode
Creators: name: Saathoff, Menke
name: Röben, Peter
Publisher: name: Journal of Technical Education (JOTED)
Year: 2020

description: In der Ausbildung von Lehrkräften ist es allgemein anerkannt, dass die pra-xisnahe Erfahrung einen wichtigen Beitrag zur Professionalisierung leistet. Ähnlich verhält es sich mit der reflexiven Auseinandersetzung von Individuen mit ihren subjektiven Theorien, welche in zahlreichen Publikationen mit dafür verantwortlich gemacht werden, inwiefern wir Entscheidun-gen im Unterricht aber auch bereits bei der Unterrichtsplanung treffen. Es stellt sich allerdings die Frage, inwieweit sich eine solche reflexive Auseinandersetzung Studierender mit ihren subjektiven Theorien im Lehramtsstudium umsetzen lässt. Als Ort der praxisnahen Erfahrung dient in unserem Kontext ein Lehr-Lern-Labor. Hierbei handelt es sich um ein in die Lehramtsausbildung imple-mentierten Lernort, in der außerschulisches Lernen und studentische Lehramtsausbildung ver-knüpft werden. Zur Erfassung und Offenlegung subjektiver Sichtweisen wird die Repertory-Grid-Methode unter Verwendung eines Prä-Post-Settings genutzt. In diesem Beitrag soll aufgezeigt werden, inwiefern die Arbeit im Lehr-Lern-Labor eingebettet in ein solches Setting zur reflexiven Auseinandersetzung Studierender mit ihren subjektiven Theorien beitragen kann.
description: Journal of Technical Education (JOTED), Bd. 8 Nr. 1 (2020): Journal of Technical Education (JOTED)
Adiabatic Interactions of Manakov Solitons -- Effects of Cross-modulation
Creators: name: Gerdjikov, V. S.
name: Todorov, M. D.
name: Kyuldjiev, A. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We investigate the asymptotic behavior of the Manakov soliton trains perturbed by cross-modulation in the adiabatic approximation. The multisoliton interactions in the adiabatic approximation are modeled by a generalized Complex Toda chain (GCTC). The cross-modulation requires special treating for the evolution of the polarization vectors of the solitons. The numerical predictions of the Manakov system are compared with the perturbed GCTC. For certain set of initial parameters GCTC describes very well the long-time evolution of the Manakov soliton trains.
description: 13 pages, 8 figures. arXiv admin note: text overlap with arXiv:1408.0230
Textsortenbasierte Sprachbildung im Technikunterricht
Creators: name: Ciklasahin, Anil
name: Lang, Martin
Publisher: name: Journal of Technical Education (JOTED)
Year: 2020

description: Der zeitgemäße Technikunterricht und die Notwendigkeit des Schriftsprach-gebrauchs im Fach, fordern ein sprachbildendes Unterrichtskonzept zur Erlernung der technikspe-zifischen Fachsprache und sprachlicher Handlungen im Fachkontext. Um das Ziel des sprachbil-denden Technikunterrichts zu erreichen, wird im BMBF-Projekt SchriFT II - Schreiben im Fachunterricht der Sekundarstufe I unter Einbeziehung des Türkischen eine quasi-experimentelle Feldstudie zur Wirksamkeit textsortenbasierter Sprachbildungsmaterialien in der siebten und ach-ten Jahrgangsstufe an Gesamtschulen in NRW durchgeführt.
description: Journal of Technical Education (JOTED), Bd. 8 Nr. 1 (2020): Journal of Technical Education (JOTED)
Editorial: Grundständige digitale Lehrpersonenbildung - nicht in Sicht
Creators: name: Tenberg, Ralf
Publisher: name: Journal of Technical Education (JOTED)
Year: 2020

description: Die Digitalisierung schreitet voran, die Lehrpersonenbildung - explizit im berufsbildenden Bereich - hält nicht mit. Vor dem Hintergrund der aktuellen und absehbaren An-forderungen, welche die Digitalisierung an Auszubildende und junge Berufstätige stellt, stehen eine Reihe von Herausforderungen für deren Lehrpersonen an, welche sich in die Hauptbereiche Medienerziehung, Mediendidaktik/-methodik und Fachtechnologie aufgliedern. Jeder dieser Hauptbereiche beinhaltet anspruchsvolle und auch interdependente Teilaspekte, welche sowohl im Studium als auch im Vorbereitungsdienst proaktiv gehandhabt werden können.
description: Journal of Technical Education (JOTED), Bd. 8 Nr. 1 (2020): Journal of Technical Education (JOTED)
Editorial: Basic digital teacher training - not in sight
Creators: name: Tenberg, Ralf
Publisher: name: Journal of Technical Education (JOTED)
Year: 2020

description: Digitization is progressing, teacher training - explicitly in the vocational area - is not keeping up. Against the background of current and foreseeable requirements that digitization places on trainees and young professionals, there are a number of challenges for their teachers, which are divided into the main areas of media education, media didactics / methodology and specialist technology. Each of these main areas contains demanding and interdependent aspects, which can be handled proactively both in the course of study and in the course of training.
description: Journal of Technical Education (JOTED), Bd. 8 Nr. 1 (2020): Journal of Technical Education (JOTED)
Nonperturbative light-front Hamiltonian methods
Creators: name: Hiller, J. R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the current state-of-the-art in nonperturbative calculations done with Hamiltonians constructed in light-front quantization of various field theories. The language of light-front quantization is introduced, and important (numerical) techniques, such as Pauli--Villars regularization, discrete light-cone quantization, basis light-front quantization, the light-front coupled-cluster method, the renormalization group procedure for effective particles, sector-dependent renormalization, and the Lanczos diagonalization method, are surveyed. Specific applications are discussed for quenched scalar Yukawa theory, $ϕ^4$ theory, ordinary Yukawa theory, supersymmetric Yang--Mills theory, quantum electrodynamics, and quantum chromodynamics. The content should serve as an introduction to these methods for anyone interested in doing such calculations and as a rallying point for those who wish to solve quantum chromodynamics in terms of wave functions rather than random samplings of Euclidean field configurations.
description: 67 pages, 14 figures; review to appear in Progress in Particle and Nuclear Physics
Tool For Rapid Generation Of Ship Hull Forms Used For Comparative Performance Analysis Of Various Ship Designs
Creators: name: Prebeg, Pero
name: Smiljko Rudan
name: Simun Svilicic
name: Radic-Rossi, Irena
Publisher: name: Society for Historical Archaeology
Year: 2023
Subjects: subject: Zagrebacka
valueUri: https://core.tdar.org/browse/geographic-keyword/86133/zagrebacka
subject: ship hull form
valueUri: https://core.tdar.org/browse/other-keyword/169551/ship-hull-form
subject: analytical model
valueUri: https://core.tdar.org/browse/other-keyword/169552/analytical-model
subject: ship design
valueUri: https://core.tdar.org/browse/other-keyword/169553/ship-design

description: This is an abstract from the session entitled "Digital Approaches in Nautical Archaeology", at the 2023 annual meeting of the Society for Historical Archaeology. The hull of a ship at an archaeological site is almost always incomplete, so the resulting reconstructed hull lines inevitably include some uncertainties. These uncertainties contain the potential to improve the ship's theoretical performance. Hull definition based on analytically defined waterline curves allows easy generation and control of hull form variants. This paper focuses on creating different alternative hull forms in three steps. First, the parent hull form is generated by fitting the analytical model to the reconstructed hull lines. The second step involves defining the allowed hull changes. The third step is a multiobjective optimization of the problem in which the identified uncertainty ranges are used as constraints, while the ship's hydromechanics and navigation characteristics are used as objectives. The calculation of hydromechanical and seakeeping characteristics is based on low-fidelity models that are usually used in the initial stages of general ship design. The research contributes to the results of the project Numerical reconstruction in the archaeology of seafaring (NEREAS, IP-02-2020-3420) funded by the Croatian Science Foundation.
A Preliminary Investigation Into the Effectiveness of Online Modules for Teaching Research and Writing Skills to Multilingual International Post-Secondary Students
Creators: name: Chang, Daniel H.
name: Lane, Julia
name: Power, Hope
Publisher: name: BC TEAL Journal
Year: 2023

description: This paper describes a pilot project undertaken in 2019 by library instructors at Simon Fraser University (SFU) to transition from in-person to online research and writing skills instruction within the context of a foundational course for multilingual international students at Fraser International College (FIC), an international pathway school to SFU. Our research and writing skills modules were integrated into a course with academic skill-building opportunities to support students’ successful transition to English-medium university studies. This article reports findings from our mixed-methods study about the effectiveness of these modules. The first semester after we transitioned online, we collected response data from course instructors and students. Preliminary findings suggest students benefited from the self-paced and flexible nature of the online learning experience and resources. Course instructor feedback suggests a blended learning approach combining in-person and online components might be more effective for developing students’ university-level research and writing skills. Our work on the modules was highly collaborative, involving an extraordinary level of commitment from FIC and SFU Library staff and instructors. Our findings suggest further collaboration with more specialists, especially with expertise in the area of English language learning, would produce more effective online resources for multilingual international students developing their research and writing skills.
description: BC TEAL Journal, Vol. 8 No. 1 (2023)
Emission of neutron-proton and proton-proton pairs in neutrino scattering
Creators: name: Simo, I. Ruiz
name: Amaro, J. E.
name: Barbaro, M. B.
name: De Pace, A.
name: Caballero, J. A.
name: Megias, G. D.
name: Donnelly, T. W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use a recently developed model of relativistic meson-exchange currents to compute the neutron-proton and proton-proton yields in $(ν_μ,μ^-)$ scattering from $^{12}$C in the 2p-2h channel. We compute the response functions and cross sections with the relativistic Fermi gas model for different kinematics from intermediate to high momentum transfers. We find a large contribution of neutron-proton configurations in the initial state, as compared to proton-proton pairs. In the case of charge-changing neutrino scattering the 2p-2h cross section of proton-proton emission ({\it i.e.,} np in the initial state) is much larger than for neutron-proton emission ({\it i.e.,} two neutrons in the initial state) by a $(ω,q)$-dependent factor. The different emission probabilities of distinct species of nucleon pairs are produced in our model only by meson-exchange currents, mainly by the $Δ$ isobar current. We also analyze other effects including exchange contributions and the effect of the axial and vector currents.
description: 9 pages and 8 figures
The Hessian Cloth ‘Parajute’ of the Second World War
Creators: name: White, Gerald
Publisher: name: British Journal for Military History
Year: 2025

description: The Second World war in India and Burma was principally a ground campaign, prosecuted in large part with supply by air, both air landing and air dropping. Distance from the UK and other factors required GHQ India develop domestic capabilities to be partially self-sufficient. The war in India and Burma has received much less coverage than elsewhere and there are gaps in what has been published. Coverage of the supply parachute situation, critical to air dropping, is one of those gaps, with official and personal books and articles mostly focusing attention on a failed substitute, the hessian cloth parachute, at the expense of the locally produced and massively successful cotton cloth parachute.
description: British Journal for Military History, Vol. 11 No. 1 (2025): British Journal for Military History
An Examination of LGBTQ+ Representation in a Canadian ELT Newspaper
Creators: name: Freimuth, Hilda
name: Walter, Leah
Publisher: name: BC TEAL Journal
Year: 2023

description: Up to 30% of the world’s population is part of the LGBTQ+ community. Yet, representation in English language programs and classroom materials around the world appears to be minimal to non-existent. This study conducted a content analysis of LGBTQ+ representation in one locally produced ELT newspaper in British Columbia, Canada to investigate if a more localized publication with less pressure to appeal to a mass readership would yield greater representation. The study found that five instances of representation occurred in a four-year span of production of thirty-nine newspapers. This finding is significant in that very few examples of this type exist in the literature.
description: BC TEAL Journal, Vol. 8 No. 1 (2023)
Carving Out an Epistemological Space: EAL Teaching and Learning as a Field of Inquiry
Creators: name: Douglas, Scott Roy
Publisher: name: BC TEAL Journal
Year: 2022

description: The BC TEAL Journal continues to strengthen the field of English as an additional language (EAL) teaching and learning as a space for authors, reviewers, editors, and readers to come together in ways that underscore the knowledge creation, theory building, and educational innovation taking place in EAL teaching and learning in British Columbia and the wider world. Taking the time to define epistemology as it relates to EAL teaching and learning, this editorial outlines how the articles in the current issue of the journal support that space. There are five articles in this issue spanning post-secondary and adult contexts. With topics related to testing, teaching methods, lesson planning, comparative education, and literacy education, the value of the journal as a venue for the dissemination of new knowledge is much in evidence.
description: BC TEAL Journal, Vol. 7 No. 1 (2022)
Astonishingly Accurate British Intelligence in the American War of Independence
Creators: name: Procknow, Eugene A
Publisher: name: British Journal for Military History
Year: 2025

description: An unsigned, undated document among the General Sir Henry Clinton Papers at the University of Michigan William C. Clements Library, Ann Arbor, Michigan, demonstrates that the British possessed remarkable, accurate intelligence on the Continental Army’s order of battle and command structure. Curiously, Crown officers added derogatory nicknames denoting their understanding of the senior Rebel generals’ predominant character traits. Neither the senior general assessments nor the command structure intelligence led to sustainable battlefield advantages. Still, it aided unit identification during General Howe’s Spring 1777 New Jersey campaign and may have contributed to the British victory at Brandywine later that year.
description: British Journal for Military History, Vol. 11 No. 1 (2025): British Journal for Military History
Schüler- und Lehrervorstellungen zu ausgewählten technischen Grundlagen der Mechanik und Energieversorgung
Creators: name: Nepper, Hannes Helmut
name: Gschwendtner, Tobias
Publisher: name: Journal of Technical Education (JOTED)
Year: 2020

description: Die Identifizierung von prominenten Schülervorstellungen und Vorstellungen von Techniklehrern der Sekundarstufe 1 ist in der allgemeinbildenden technikdidaktischen Forschung bisher vernachlässigt worden, wenngleich deren Beachtung für eine wirksame Unterrichtspraxis generell als wichtig erkannt wird. Vor diesem Hintergrund wurden für diesen Beitrag in einem ersten Zugriff auf Grundlage einer vorangegangenen Delphi-Studie zu bedeutsamen physikalischen Grundlagen für den Technikunterricht bei n = 60 Schüler/-innen und Lehrer/-innen Vorstellungen zu ausgewählten Grundlagen der Mechanik und Energieversorgung erhoben sowie Gemeinsamkeiten und Unterschiede analysiert.
description: Journal of Technical Education (JOTED), Bd. 8 Nr. 1 (2020): Journal of Technical Education (JOTED)
The Composition of Army Rum, 1917
Creators: name: Bertosa, Brian
Publisher: name: British Journal for Military History
Year: 2025

description: The composition of Royal Navy rum is not only a subject of commercial importance but has been the subject of serious examination both online and in a monograph dealing with the history of rum in that service. The composition of British Army rum, on the other hand, has not been seriously examined due to a lack of suitable source material. Using lists drawn up by the Port of London Authority in 1917, a detailed breakdown of the component rums, by place of origin, of the Army’s blend is now possible, confirming the impressions of contemporaries that it was not the same as that of the Navy.
description: British Journal for Military History, Vol. 11 No. 1 (2025): British Journal for Military History