cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
SGToolkit: An Interactive Gesture Authoring Toolkit for Embodied Conversational Agents
Creators: name: Yoon, Youngwoo
name: Park, Keunwoo
name: Jang, Minsu
name: Kim, Jaehong
name: Lee, Geehyuk
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Non-verbal behavior is essential for embodied agents like social robots, virtual avatars, and digital humans. Existing behavior authoring approaches including keyframe animation and motion capture are too expensive to use when there are numerous utterances requiring gestures. Automatic generation methods show promising results, but their output quality is not satisfactory yet, and it is hard to modify outputs as a gesture designer wants. We introduce a new gesture generation toolkit, named SGToolkit, which gives a higher quality output than automatic methods and is more efficient than manual authoring. For the toolkit, we propose a neural generative model that synthesizes gestures from speech and accommodates fine-level pose controls and coarse-level style controls from users. The user study with 24 participants showed that the toolkit is favorable over manual authoring, and the generated gestures were also human-like and appropriate to input speech. The SGToolkit is platform agnostic, and the code is available at https://github.com/ai4r/SGToolkit.
description: Accepted to UIST'21
Appendix from Facial growth and development trajectories based on three-dimensional images: geometric morphometrics with a deformation perspective
Creators: name: Zhong, Yu Jie
name: Cui, Dan
name: Wen, Patrick Yi Feng
name: Wong, Hai Ming
Publisher: name: The Royal Society
Year: 2023
Subjects: classificationCode: 310404
subject: Evolution of developmental systems

description: Developmental changes of facial shape are commonly investigated through geometric morphometrics. A limitation with this approach is the inability to investigate patterns of morphological changes at local scale. This could be addressed through quantifying the deformation required to deform one shape to another. This study aimed to investigate changes in mean, rate, and variance of facial shape at local scale using geometric morphometrics through deformation perspective. A total of 2112 Europeans 3 to 40 years-old from the three-dimensional Facial Norms project were included. Shape and rate trajectories from partial least-squares regressions revealed that the developmentally protrusive nasal bridge was due to local expansion in surrounding tissues as opposed to shape changes in nasal bridge per-ser. Local expansion of the supraorbital region, in particular the medial part in males, resulted in the sloping forehead and deep-situated eyes with development. Facial shape variation increased non-linearly with age (p < 0.05), with features having larger rate of change becoming more developmentally diversified. In summary, our deformation perspective facilitates unravelling morphogenetic processes underlying shape changes. Our extended analytical scope inspires novel measures worthy of consideration while establishing facial growth charts. The analytical framework in this study is broadly applicable for analysis of shape changes in general.
Finite mass gravitating Yang monopoles
Creators: name: Cebeci, Hakan
name: Sarioglu, Ozgur
name: Tekin, Bayram
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that gravity cures the infra-red divergence of the Yang monopole when a proper definition of conserved quantities in curved backgrounds is used, i.e. the gravitating Yang monopole in cosmological Einstein theory has a finite mass in generic even dimensions (including time). In addition, we find exact Yang-monopole type solutions in the cosmological Einstein-Gauss-Bonnet-Yang-Mills theory and briefly discuss their properties.
description: 10 pages, no figures, RevTeX 4; version 2 to appear in PRD with minor wording changes
GIT Compactifications of $M_{0,n}$ from Conics
Creators: name: Giansiracusa, Noah
name: Simpson, Matthew
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H10 (Primary), 14L24 (Secondary)

description: We study GIT quotients parametrizing n-pointed conics that generalize the GIT quotients $(\mathbb{P}^1)^n//SL2$. Our main result is that $\overline{M}_{0,n}$ admits a morphism to each such GIT quotient, analogous to the well-known result of Kapranov for the simpler $(\mathbb{P}^1)^n$ quotients. Moreover, these morphisms factor through Hassett's moduli spaces of weighted pointed rational curves, where the weight data comes from the GIT linearization data.
description: 15 pages, 5 figures; corrected inequality in Lemma 5.1, Int. Math. Res. Notices Vol. 2010
Non-equilibrium mode competition in a pumped dye-filled cavity
Creators: name: Vlaho, Martina
name: Eckardt, André
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We consider a homogeneously pumped photon gas coupled to a dye medium and investigate how its steady state is effected when varying the pump power, the photon cavity lifetime and the cutoff frequency. We study how the interplay between pumping, loss, and dye-induced thermalization influences the selection of the cavity modes that acquire large occupation. Depending on the parameter regime, the latter can be related either to lasing of (typically multiple) modes or to equilibrium-like photon condensation in the ground mode. We calculate and explain the phase diagram of the system, with a particular emphasis on the role played by a mode repulsion that occurs in the regime of weak cavity loss.
Universality of QCD traveling-waves with running coupling beyond leading logarithmic accuracy
Creators: name: Beuf, Guillaume
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the solutions of QCD evolution equations with saturation in the high energy limit. We present a general argument showing that, in the running coupling case, the Next-to-Leading-Logarithmic (NLL) and higher order terms are irrelevant for the universal asymptotic features of the solutions.
description: 4 pages. To appear in the proceedings of the School on QCD, Low-x Physics and Diffraction, Copanello, Calabria, Italy, July 2007
Landbrugs- og gartneritællingen
Creators: Danmarks Statistik
Publisher: name: Rigsarkivet
Year: 2022

description: Formålet med landbrugs- og gartneritællingen er at tilvejebringe en statistik, som kan belyse strukturen i dansk landbrug, fx i henseende til antal landbrugsbedrifter efter størrelse og geografi.
Modeling and Evaluating Personas with Software Explainability Requirements
Creators: name: Ramos, Henrique
name: Fonseca, Mateus
name: Ponciano, Lesandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: This work focuses on the context of software explainability, which is the production of software capable of explaining to users the dynamics that govern its internal functioning. User models that include information about their requirements and their perceptions of explainability are fundamental when building software with such capability. This study investigates the process of creating personas that include information about users' explainability perceptions and needs. The proposed approach is based on data collection with questionnaires, modeling of empathy maps, grouping the maps, generating personas from them and evaluation employing the Persona Perception Scale method. In an empirical study, personas are created from 61 users' response data to a questionnaire. The generated personas are evaluated by 60 users and 38 designers considering attributes of the Persona Perception Scale method. The results include a set of 5 distinct personas that users rate as representative of them at an average level of 3.7 out of 5, and designers rate as having quality 3.5 out of 5. The median rate is 4 out of 5 in the majority of criteria judged by users and designers. Both the personas and their creation and evaluation approach are contributions of this study to the design of software that satisfies the explainability requirement.
description: 15 pages, VII Iberoamerican Conference on Human Computer Interaction
Digitaliser.dk
Creators: IT- ogTelestyrelsen
Digitaliseringsstyrelsen
Publisher: name: Rigsarkivet
Year: 2022

description: Digitalisér.dk er en social netværksplatform for erfaringsudveksling og videndeling om offentlig digitalisering af Danmark, hvor du blandt andet finder vejledninger, software eller driftsinformationer. Du kan selv oprette en gruppe på Digitalisér.dk, hvis du ønsker at dele viden eller debattere med andre om offentlig digitalisering. Fx om et projekt, driftssamarbejde eller noget helt andet. Digitalisér.dk kan både bruges som projektrum, ideforum og supportrum. Du vælger selv om din gruppe skal have en åben medlemspolitik, som tillader alle at melde sig ind, eller om man skal ansøge eller inviteres til at blive medlem af gruppen (lukket gruppe). På samme vis kan du vælge om alle kan oprette en debat, nyhed eller begivenhed i din gruppen, eller det kun skal være medlemmer af gruppen eller kun administratorer der kan oprette indhold.
Efficiency estimation of self-triggered antenna clusters for air-shower detection
Creators: name: Bezyazeekov, P.
name: Fedorov, O.
name: Kazarina, Y.
name: Kopylova, O.
name: Kostunin, D.
name: Lenok, V.
name: Malakhov, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Air-shower radio arrays operate in low signal-to-noise ratio conditions, which complicates the autonomous measurement of air-shower signals without using an external trigger from optical or scintillator detectors. A simple threshold trigger for radio detector can be efficiently applied onlyin radio-quiet conditions, because for other cases this trigger detects a high fraction of noise pulses. In the present work, we study aspects of independent air-shower detection by dense antenna clusters with a complex real-time trigger system. For choosing the optimal procedures for the real-time analysis, we study the dependence between trigger efficiency, count rate, detector hardware and geometry. For this study, we develop a framework for testing various methods of signal detection and noise filtration for arrays with various specifications and the hardware implementation of these methods based on field programmable gate arrays. The framework provides flexible settings for the management of station-level and cluster-level steps of detecting the signal, optimized for the hardware implementation for real-time processing. It includes data-processing tools for the initialconfiguration and tests on pre-recorded data, tools for configuring the trigger architecture andtools for preliminary estimates of the trigger efficiency at given thresholds of cosmic-ray energyand air-shower pulse amplitude. We show examples of the trigger pipeline developed with this framework and discuss the results of tests on simulated data.
description: Proceedings of the 37th International Cosmic Ray Conference (ICRC2021), 12-23 July 2021, Berlin, Germany - Online
FoodLogoDet-1500: A Dataset for Large-Scale Food Logo Detection via Multi-Scale Feature Decoupling Network
Creators: name: Hou, Qiang
name: Min, Weiqing
name: Wang, Jing
name: Hou, Sujuan
name: Zheng, Yuanjie
name: Jiang, Shuqiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Food logo detection plays an important role in the multimedia for its wide real-world applications, such as food recommendation of the self-service shop and infringement detection on e-commerce platforms. A large-scale food logo dataset is urgently needed for developing advanced food logo detection algorithms. However, there are no available food logo datasets with food brand information. To support efforts towards food logo detection, we introduce the dataset FoodLogoDet-1500, a new large-scale publicly available food logo dataset, which has 1,500 categories, about 100,000 images and about 150,000 manually annotated food logo objects. We describe the collection and annotation process of FoodLogoDet-1500, analyze its scale and diversity, and compare it with other logo datasets. To the best of our knowledge, FoodLogoDet-1500 is the first largest publicly available high-quality dataset for food logo detection. The challenge of food logo detection lies in the large-scale categories and similarities between food logo categories. For that, we propose a novel food logo detection method Multi-scale Feature Decoupling Network (MFDNet), which decouples classification and regression into two branches and focuses on the classification branch to solve the problem of distinguishing multiple food logo categories. Specifically, we introduce the feature offset module, which utilizes the deformation-learning for optimal classification offset and can effectively obtain the most representative features of classification in detection. In addition, we adopt a balanced feature pyramid in MFDNet, which pays attention to global information, balances the multi-scale feature maps, and enhances feature extraction capability. Comprehensive experiments on FoodLogoDet-1500 and other two benchmark logo datasets demonstrate the effectiveness of the proposed method. The FoodLogoDet-1500 can be found at this https URL.
description: This paper has been accepted to ACM MM 2021. The FoodLogoDet-1500, see https://github.com/hq03/FoodLogoDet-1500-Dataset
Observation of the acceleration of light in a tapered optical fiber
Creators: name: Ge, Hui
name: Sheng, Chong
name: Zhu, Shining
name: Liu, Hui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: One of the most fascinating aspects of quantum fields in curved spacetime is the Unruh effect. The direct experimental detection of Unruh temperature has remained an elusive challenge up to now. Gradient optical waveguides manipulating the dispersion of photons are assumed to realize the great acceleration of effective particles, leading to a high effective Unruh temperature. However, experimentally achieving this optical waveguide has not yet been reported. In this work, we exploit a tapered fiber to simulate the accelerated motion of effective particles and obtain an effective Unruh temperature. When light propagating in a tapered fiber is affected by the external high refractive index medium, a leaky phenomenon akin to bremsstrahlung will be observed, and the pattern of leaky radiation is dependent on the acceleration of photons. During the experiments, different accelerations corresponding to different Unruh temperatures are achieved by controlling the shape of the tapered waveguide.
description: 9 pages,4 figures
TILSKOV
Creators: Skov- og Naturstyrelsen
Naturstyrelsen
Styrelsen for Vand- og Naturforvaltning
Miljøstyrelsen
Publisher: name: Rigsarkivet
Year: 2022

description: System til håndtering af sagsbehandling, støtteberegning og udbetaling af sager vedrørende tilskud til skov herunder beregning af EU-støtte af den pågældene støtte.
Revealing Interfaces of Two-Dimensional Lateral Heterostructures by Second Harmonic Generation
Creators: name: Sousa, Frederico B.
name: Lafeta, Lucas
name: Cadore, Alisson R.
name: Sahoo, Prasana K.
name: Malard, Leandro M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The interface between two different semiconductors is crucial in determining the electronic properties at the heterojunction, therefore novel techniques that can probe these regions are of particular interest. Recently it has been shown that heterojunctions of two-dimensional transition metal dichalcogenides have sharp and epitaxial interfaces that can be used to the next generation of flexible and on chip optoelectronic devices. Here, we show that second harmonic generation (SHG) can be used as an optical tool to reveal these atomically sharp interfaces in different lateral heterostructures. We observed an enhancement of the SH intensity at the heterojunctions, and showed that is due to a coherent superposition of the SH emission from each material. This constructive interference pattern reveals a phase difference arising from the distinct second-order susceptibilities of both materials at the interface. Our results demonstrate that SHG microscopy is a sensitive characterization technique to unveil nanometric features in layered materials and their heterostructures.
The $n$-dimensional quadratic Heisenberg algebra as a "non--commutative" $\rm{sl}(2,\mathbb{C})$
Creators: name: Accardi, Luigi
name: Boukas, Andreas
name: Lu, Yun-Gang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: Primary 81S05, 22E30 Secondary 60B15, 81R10

description: We prove that the commutation relations among the generators of the quadratic Heisenberg algebra of dimension $n\in\mathbb{N}$, look like a kind of \textit{non-commutative extension} of $\hbox{sl}(2, \mathbb{C})$ (more precisely of its unique $1$--dimensional central extension), denoted $\hbox{heis}_{2;\mathbb{C}}(n)$ and called the complex $n$--dimensional quadratic Boson algebra. This \textit{non-commutativity} has a different nature from the one considered in quantum groups. %In particular we prove that, for %most values of $n$, this Lie algebra cannot be isomorphic to %$\hbox{sl}(N, \mathbb{C})$ for almost any value of $N$. We prove the exponentiability of these algebras (for any $n$) in the Fock representation. We obtain the group multiplication law, in coordinates of the first and second kind, for the quadratic Boson group and we show that, in the case of the adjoint representation, these multiplication laws can be expressed in terms of a generalization of the Jordan multiplication. We investigate the connections between these two types of coordinates (disentangling formulas). From this we deduce a new proof of the expression of the vacuum characteristic function of homogeneous quadratic boson fields.
description: Available at: https://digitalcommons.lsu.edu/josa/vol2/iss4/2
Thermo-optic refraction based switchable optical mode converter
Creators: name: Shetty, Pritam P
name: Maksimov, Dmitrii N
name: Babu, Mahalingam
name: Bongu, Sudhakara Reddy
name: Bingi, Jayachandra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The temporally switchable optical mode conversion is crucial for optical communication and computing applications. This research demonstrates such optically switchable mode converter driven by thermo-optic refraction. The MoS2 nanofluid is used as a medium where the thermal microlens is created by a focused laser beam (pump). The convective thermal plume generated above the focal point of the pump beam within the nanofluid acts as an astigmatic thermal lens. It is discovered that mode conversion of the Laguerre-Gaussian (LG) to the Hermite-Gaussian (HG) beam (vice versa) takes place upon passing through the thermal lens. The topological charge of the LG beam can be easily determined using the proposed mode converter. The mode transformation is explained theoretically as the Fourier components of the LG beam undergoing different optical paths while propagating through the convective plume.
Effect of gravitational field self-interaction on large structure formation
Creators: name: Deur, Alexandre
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We check whether General Relativity's field self-interaction alleviates the need for dark matter to explain the universe's large structure formation. We found that self-interaction accelerates sufficiently the growth of structures so that they can reach their presently observed density. No free parameters, dark components or modifications of the known laws of nature were required. This result adds to the other natural explanations provided by the same approach to the, $inter~alia$, flat rotation curves of galaxies, supernovae observations suggestive of dark energy, and dynamics of galaxy clusters, thereby reinforcing its credibility as an alternative to the dark universe model.
description: 6 pages, 2 figures. Accepted for publication in Phys. Lett. B
Vurderingsdatabasen
Creators: Styrelsen for International Uddannelse
Styrelsen for Universiteter og Internationalisering
Styrelsen for Videregående Uddannelser
Styrelsen for Forskning og Uddannelse
Publisher: name: Rigsarkivet
Year: 2022

description: Vurderingsdatabasen er et middel til at registrere oplysninger om styrelsens behandling af ansøgninger om vurdering af udenlandske uddannelseskvalifikationer og om anerkendelse af udenlandske lærerkvalifikationer. Databasen skal muliggøre en sikker, effektiv og konsistent sagsbehandling. Blandt andet giver databasen sagsbehandlerne mulighed for at sammenholde aktuelle sagsspørgsmål med behandlingen af tidligere sager. Den holder styr på og giver hurtig adgang til oplysninger om sagsforløbet. Databasen skal gøre det muligt på enkel måde at foretage opgørelser, både med henblik på at sikre løbende overblik over vurderings- og anerkendelsesarbejdet og til brug for styrelsens informationsopgaver udadtil. Databasen danner grundlaget for visning af vurderingsresultater på styrelsens hjemmeside.
Aerodynamics of fluttering textiles for sports applications
Creators: name: Fuss, Franz Konstantin
Publisher: name: Loughborough University
Year: 2024

description: Engineering of Sport 15 - Proceedings from the 15th International Conference on the Engineering of Sport (ISEA 2024)
Ski cross rules require baggy clothing, however, loose and fluttering sports garments increase the drag coefficient CD. Chua et al.  (2011) examined three fabrics with areal densities ρ of 185- 235 g/m2 and four different looseness ratios (λ = 1-1.5). Neither ρ nor λ led to a significant variation of the CD [1]. The aim of this study was to investigate whether larger differences in ρ and flexural rigidity B of the fabrics cause a variation in the CD.
Råstofindvinding på land i Danmark 2017
Creators: Danmarks Statistik
Publisher: name: Rigsarkivet
Year: 2022

description: Formålet med statistikken er at producere statistik over den fysiske råstofindvinding i Danmark. Anvendelsesområder: Offentlige og private planlægningsformål, uddannelse og offentlig debat. Brugere: Kommuner, regioner, ministerier, organisationer, internationale organisationer, pressen, private virksomheder samt privatpersoner.
Adaptive Time-Resolved Mass Spectrometry with Nanomechanical Resonant Sensors
Creators: name: Demir, Alper
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Systems and Control (eess.SY)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Nanomechanical resonant sensors that are based on detecting and tracking the resonance frequency deviations due to events of interest are being advocated for a variety of applications. All sensor schemes currently in use are subject to a basic trade-off between accuracy and speed, while there is great interest in improving both in order to enable unprecedented and widespread applications. Based on a thorough understanding of the characteristics of current resonant sensor architectures, we propose adaptive and flexible sensor schemes. Unlike recently proposed time-resolved mechanical detection methods, the proposed schemes do not require ensemble averaging of the resonator response for many independent identical stimuli. Distinct one-time events can be detected in real-time with high time resolution with an accuracy that then improves considerably with elapsed time. While the proposed adaptive schemes also need to abide by the fundamental speed versus accuracy trade-off, we show that there is still "some room at the bottom" for improvement with sensor architecture innovations. Pareto optimal performance that reaches a bound that is imposed by the fundamental thermomechanical noise can be achieved.
description: 8 pages, 3 figures
Klon af Arbejdskraftsundersøgelsen 2017
Creators: Danmarks Statistik
Publisher: name: Rigsarkivet
Year: 2022

description: Formålet med Arbejdskraftundersøgelsen er at belyse befolkningens tilknytning til arbejdsmarkedet. Fx hvor mange der er beskæftigede, arbejdsløse (AKU-ledige) eller uden for arbejdsstyrken. Eller hvor mange lønmodtagere, der er på deltid, hvor mange timer 30-40-årige mænd typisk arbejder, eller hvor mange, ældre mennesker uden for arbejdsstyrken, der kunne tænke sig et arbejde.

Undersøgelsen følger den internationale arbejdsmarkedsorganisation ILO's retningslinjer for opgørelser af befolkningens tilknytning til arbejdsmarkedet. Arbejdskraftundersøgelsen laves efter samme retningslinjer i alle EU-lande og i en lang række andre lande, og er derfor den bedste danske undersøgelse til internationale sammenligninger af arbejdsmarkedsstatistik.
On measuring the bending modulus of lipid bilayers with cholesterol
Creators: name: Nagle, John F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Regarding the effect on the bending modulus of adding cholesterol to lipid bilayers, recent results using neutron spin echo and nuclear magnetic resonance relaxation methods that involve linear transport properties have conflicted with earlier results from purely equilibrium experiments that do not involve linear transport properties. A general discussion indicates how one can be misled by data obtained by methods that involve linear transport properties. It is then shown specifically how the recent neutron spin echo results can be interpreted to agree with the earlier purely equilibrium experimental results, thereby resolving that conflict. Regarding the nuclear magnetic resonance relaxation method, it is noted that current interpretation of the data is unclear regarding the identity of the modulus that is involved, and an alternative interpretation is explored that does not disagree with the results of the equilibrium experiments.
description: 7 pages, 1 figure
The H.E.S.S. Gravitational Wave Rapid Follow-up Program during O2 and O3
Creators: name: Ashkar, Halim
name: Brun, Francois
name: Füßling, Matthias
name: Hoischen, Clemens
name: Konno, Ruslan
name: Ohm, Stefan
name: Prokoph, Heike
name: Reichherzer, Patrick
name: Schüssler, Fabian
name: Arroyo, Monica Seglar
name: Zhu, Sylvia J
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Since 2015, the direct detection of Gravitational Waves (GWs) became possible with ground-based interferometers like LIGO and Virgo. GWs became the center of attention of the astronomical community and electromagnetic observatories took a particular interest in follow-up observations of such events. The main setback of these observations is the poor localization of GW events. In fact, GW localization uncertainties can span tens to hundreds of deg$^{2}$ the sky even with the advanced configurations of current GW interferometers. In this contribution, we present five follow-up strategies developed for the High Energy Stereoscopic System (H.E.S.S.) and assess their performances. We show how a 2D and 3D galaxy targeted search approach exploiting the integral probability inside the instruments field of view are best suited for medium field of view instruments like H.E.S.S. We also develop an automatic response scheme within the H.E.S.S. Transient Follow-up system that is optimized for fast response and is capable of responding promptly to all kind of GW alerts. GW events are filtered by the developed scheme and prompt and afterglow observations are automatically scheduled. The H.E.S.S. response latency to prompt alerts is measured to be less than 1 minute. With this continually optimized GW response scheme, H.E.S.S. scheduled several GW follow-up observations during the second and third LIGO/Virgo observation runs.
description: Proceedings of the 37th International Cosmic Ray Conference (ICRC2021), 12-23 July 2021, Berlin, Germany - Online
Supervised Contrastive Learning for Multimodal Unreliable News Detection in COVID-19 Pandemic
Creators: name: Zhang, Wenjia
name: Gui, Lin
name: He, Yulan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: As the digital news industry becomes the main channel of information dissemination, the adverse impact of fake news is explosively magnified. The credibility of a news report should not be considered in isolation. Rather, previously published news articles on the similar event could be used to assess the credibility of a news report. Inspired by this, we propose a BERT-based multimodal unreliable news detection framework, which captures both textual and visual information from unreliable articles utilising the contrastive learning strategy. The contrastive learner interacts with the unreliable news classifier to push similar credible news (or similar unreliable news) closer while moving news articles with similar content but opposite credibility labels away from each other in the multimodal embedding space. Experimental results on a COVID-19 related dataset, ReCOVery, show that our model outperforms a number of competitive baseline in unreliable news detection.
description: Accepted by the CIKM 2021
Erhvervsbeskæftigelsen 2017
Creators: Danmarks Statistik
Publisher: name: Rigsarkivet
Year: 2022

description: Formålet med Erhvervsbeskæftigelsen er at udarbejde årligt regionalt fordelt statistik over antal arbejdssteder, der er aktive ultimo november i det aktuelle tællingsår og hvortil der kan knyttes beskæftigelse ultimo november.
Zero-energy states of massive Dirac equation in magnetic fields
Creators: name: Herbut, Igor F.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Dirac equation with a U(1) vortex in the mass-term is solved in the presence of magnetic-like fields at zero energy. By drawing an analogy to classical mechanics, it is shown that the four-component Dirac equation in arbitrary magnetic field always yields one zero-energy state. In the time-reversal preserving, pseudo-magnetic field, however, the number of zero-energy states may depend on the field's profile and sign. Some explicit examples are worked out. Possible implications of these results for the charge of the vortex and for the behavior of graphene in magnetic field are discussed.
description: 5 revtex pages; cosmetic changes, updated references, published version
Variational problems with thin obstacles
Creators: name: Richardson, David
Publisher: name: University of British Columbia
Year: 2010

description: In this thesis the solution to the variational problem of Signorini is studied, namely: (i) Δv = 0 in Ω; (ii) v ≥ ѱ on əΩ; (iii) əv/əѵ ≤ g on əΩ; (iv) (v- ѱ) (əv/əѵ – g) = 0 on əΩ where Ω is a domain in R[sup n], and v is the unit inner normal vector to əΩ. In the case n = 2 a regularity theorem is proved. It is shown that if ѱ Є C[sup 1,α] (əΩ), g Є Lip α(əΩ) then v Є C[sup 1,α] (əΩ) if α < 1/2 . An example is given to shown that this result is optimal. The method of proof relies on techniques of complex analysis and therefore does not extend to higher dimensions. For n > 2 the case where Ω, is unbounded, or equivalently, where ѱ is unbounded in a neighbourhood of some point of əΩ is considered. This is a situation where known existence theorems do not apply. Some sufficient conditions for the pair (ѱ,g) are derived that will ensure the existence of a solution in this case, thereby extending some results obtained by A. Beurling and P. Malliavin in the two dimensional case. The proof involves a variational problem in a Hilbert space analogous to the one considered by Beurling and Malliavin, and some pointwise estimates of Riesz transforms.
Readout of a single electron spin in a double quantum dot using a quantum point contact
Creators: name: Zhang, Jian-Ping
name: Ouyang, Shi-Hua
name: Lam, Chi-Hang
name: You, J. Q.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the dynamics of a single electron spin in a double quantum dot (DQD) and its readout via a quantum point contact (QPC). We model the system microscopically and derive rate equations for the reduced electron density matrix of the DQD. Two cases with one and two electrons in the DQD are studied. In the one-electron case, with different Zeeman splittings in the two dots, the electron spin states are distinctly characterized by a constant and an oscillatory current through the QPC. In the two-electron case, the readout of the spin state of the electron in one of the dots called the qubit dot is essentially similar after considering hyperfine interactions between the electrons and the nuclear spins of the host materials and a uniform magnetic field applied to the DQD. Moreover, to ensure that an electron is properly injected into the qubit dot, we propose to determine the success of the electron injection from the variations of the QPC current after applying an oscillating magnetic field to the qubit dot.
description: 18 pages, 7 figures
Enhancement of spin-orbit coupling and magnetic scattering in hydrogenated graphene
Creators: name: Cao, Shimin
name: Cao, Chuanwu
name: Tian, Shibing
name: Chen, Jian-Hao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin-orbit coupling (SOC) can provide essential tools to manipulate electron spins in two-dimensional materials like graphene, which is of great interest for both fundamental physics and spintronics application. In this paper, we report the low-field magnetotransport of in situ hydrogenated graphene where hydrogen atoms are attached to the graphene surface in continuous low temperature and vacuum environment. Transition from weak localization to weak antilocalization with increasing hydrogen adatom density is observed, indicating enhancing Bychkov-Rashba-type SOC in a mirror symmetry broken system. From the low-temperature saturation of phase breaking scattering rate, the existence of spin-flip scattering is identified, which corroborates the existence of magnetic moments in hydrogenated graphene.
Effective temperatures and activated dynamics for a two-dimensional air-driven granular system on two approaches to jamming
Creators: name: Abate, A. R.
name: Durian, D. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present experiments on several distinct effective temperatures in a granular system at a sequence of increasing packing densities and at a sequence of decreasing driving rates. This includes single-grain measurements based on the mechanical energies of both the grains and an embedded oscillator, as well as a collective measurement based on the Einstein relation between diffusivity and mobility, which all probe different time scales. Remarkably, all effective temperatures agree. Furthermore, mobility data along the two trajectories collapse when plotted vs effective temperature and exhibit an Arrhenius form with the same energy barrier as the microscopic relaxation time.
Nuclear Polarization in Quantum Point Contacts in an In-Plane Magnetic Field
Creators: name: Ren, Y.
name: Yu, W.
name: Frolov, S. M.
name: Folk, J. A.
name: Wegscheider, W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Nuclear spin polarization is typically generated in GaAs quantum point contacts (QPCs) when an out-of-plane magnetic field gives rise to spin-polarized quantum Hall edge states, and a voltage bias drives transitions between the edge states via electron-nuclear flip-flop scattering. Here, we report a similar effect for QPCs in an in-plane magnetic field, where currents are spin polarized but edge states are not formed. The nuclear polarization gives rise to hysteresis in the d.c. transport characteristics, with relaxation timescales around 100 seconds. The dependence of anomalous QPC conductance features on nuclear polarization provides a useful test of their spin-sensitivity.
description: 5 pages
Supplementary tables and figures from Two male-killing Wolbachia from Drosophila birauraia that are closely related but distinct in genome structure
Creators: name: ARAI, Hiroshi
name: Watada, Masayoshi
name: Kageyama, Daisuke
Publisher: name: The Royal Society
Year: 2023
Subjects: classificationCode: 310499
subject: Evolutionary biology not elsewhere classified
classificationCode: 310509
subject: Genomics
classificationCode: 310799
subject: Microbiology not elsewhere classified

description: Figure S1-S3 and Table S1-S5 are presented in the file.
Palatini f(R) gravity as a fixed point
Creators: name: Faraoni, Valerio
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the context of modified gravity, we point out how the Palatini version of these theories is singled out as a very special case corresponding to the unique fixed point of a transformation involving a special conformal rescaling of the metric. This mathematical peculiarity signals deeply rooted problems which make the theory unphysical.
description: 9 pages, LaTeX, to appear in Phys. Lett. B
Effective Action Approach for Quantum Phase Transitions in Bosonic Lattices
Creators: name: Bradlyn, Barry
name: Santos, Francisco Ednilson A. dos
name: Pelster, Axel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Based on standard field-theoretic considerations, we develop an effective action approach for investigating quantum phase transitions in lattice Bose systems at arbitrary temperature. We begin by adding to the Hamiltonian of interest a symmetry breaking source term. Using time-dependent perturbation theory, we then expand the grand-canonical free energy as a double power series in both the tunneling and the source term. From here, an order parameter field is introduced in the standard way, and the underlying effective action is derived via a Legendre transformation. Determining the Ginzburg-Landau expansion to first order in the tunneling term, expressions for the Mott insulator-superfluid phase boundary, condensate density, average particle number, and compressibility are derived and analyzed in detail. Additionally, excitation spectra in the ordered phase are found by considering both longitudinal and transverse variations of the order parameter. Finally, these results are applied to the concrete case of the Bose-Hubbard Hamiltonian on a three dimensional cubic lattice, and compared with the corresponding results from mean-field theory. Although both approaches yield the same Mott insulator - superfluid phase boundary to first order in the tunneling, the predictions of our effective action theory turn out to be superior to the mean-field results deeper into the superfluid phase.
Hybrid functional study of proper and improper multiferroics
Creators: name: Stroppa, A.
name: Picozzi, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a detailed study of the structural, electronic, magnetic and ferroelectric properties of prototypical \textit{proper} and \textit{improper} multiferroic (MF) systems such as BiFeO$_{3}$ and orthorhombic HoMnO$_{3}$, respectively, within density functional theory (DFT) and using the Heyd-Scuseria-Ernzerhof hybrid functional (HSE). By comparing our results with available experimental data as well as with state-of-the-art GW calculations, we show that the HSE formalism is able to account well for the relevant properties of these compounds and it emerges as an accurate tool for predictive first-principles investigations on multiferroic systems. We show that effects beyond local and semilocal DFT approaches (as provided by HSE) are necessary for a realistic description of MFs. For the electric polarization, a decrease is found for MFs with magnetically-induced ferroelectricity, such as HoMnO$_3$, where the calculated polarization changes from $\sim$ 6 $μ C/cm^2$ using Perdew-Burke-Ernzerhof (PBE) to $\sim$ 2 $μ C/cm^2$ using HSE. However, for \textit{proper} MFs, such as BiFeO$_{3}$, the polarization slightly increases upon introduction of exact exchange. Our findings therefore suggest that a general trend for the HSE correction to bare density functional cannot be extracted; rather, a specific investigation has to be carried out on each compound.
description: Revised version. In press in PCCP
DESCRIPTION OF THE USED ALGORITHM FOR AUTOMATION OF QUALITY CONTROL TEXTILE MATERIALS
Creators: name: Urishev, Bakhtiyar
Publisher: name: Zenodo
Year: 2023

description: The purpose of this thesis is to automate the online detection of weaving defects by a computerized system based on image processing software. Obviously, fabric inspection has an importance to prevent the risk of delivering inferior quality product. Until recently, the visual defect detection is still under taken offline and manually by humans with many drawbacks such as tiredness, boredom and, inattentiveness. Usually, after the produced fabric is doffed from the weaving machines, it is batched into large rolls and sent to the inspection department. A skilled stuff rolls the fabric at high speed on the inspection machine under sufficient light to identify all defects. Besides the mentioned drawbacks, the lag time exists between defect creation and detection causes more second choice fabric. Fortunately, the continuous development in computer technology introduces the online automated fabric inspection as an effective alternative.
External magnetic field effects on a distorted kagome antiferromagnet
Creators: name: Kim, J. -H.
name: Ji, S.
name: Lee, S. -H.
name: Lake, B.
name: Yildirim, T.
name: Nojiri, H.
name: Habicht, K.
name: Qiu, Y.
name: Kiefer, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report bulk magnetization, and elastic and inelastic neutron scattering measurements under an external magnetic field, $H$, on the weakly coupled distorted kagome system, Cu_{2}(OD)_3Cl. Our results show that the ordered state below 6.7 K is a canted antiferromagnet and consists of large antiferromagnetic $ac$-components and smaller ferromagnetic $b$-components. By first-principle calculations and linear spin wave analysis, we present a simple spin hamiltonian with non-uniform nearest neighbor exchange interactions resulting in a system of coupled spin trimers with a single-ion anisotropy that can qualitatively reproduce the spin dynamics of Cu_{2}(OD)_3Cl.
description: 5 figures
An Empirical Study on Predictability of Software Code Smell Using Deep Learning Models
Creators: name: Gupta, Himanshu
name: Kulkarni, Tanmay G.
name: Kumar, Lov
name: Neti, Lalita Bhanu Murthy
name: Krishna, Aneesh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Code Smell, similar to a bad smell, is a surface indication of something tainted but in terms of software writing practices. This metric is an indication of a deeper problem lies within the code and is associated with an issue which is prominent to experienced software developers with acceptable coding practices. Recent studies have often observed that codes having code smells are often prone to a higher probability of change in the software development cycle. In this paper, we developed code smell prediction models with the help of features extracted from source code to predict eight types of code smell. Our work also presents the application of data sampling techniques to handle class imbalance problem and feature selection techniques to find relevant feature sets. Previous studies had made use of techniques such as Naive - Bayes and Random forest but had not explored deep learning methods to predict code smell. A total of 576 distinct Deep Learning models were trained using the features and datasets mentioned above. The study concluded that the deep learning models which used data from Synthetic Minority Oversampling Technique gave better results in terms of accuracy, AUC with the accuracy of some models improving from 88.47 to 96.84.
description: 12 pages, 6 Figures, 3 Tables, Accepted in the 35th International Conference on Advanced Information Networking and Applications (AINA-2021)
Barium-contrasted bone-cements: impact on dosimetry
Creators: name: Crowe, Scott
name: Bennett, Jane
name: Lathouras, Marika
name: Lancaster, Craig
name: Sylvander, Steven
name: Chua, Benjamin
name: Bettington, Catherine
name: Lin, Charles
name: Kairn, Tanya
Publisher: name: Zenodo
Year: 2020
Subjects: bone cement
radiotherapy
dosimetry

description: Poster describing the impact of Barium-contrasted bone cements on radiotherapy dose calculations.
Spectral Sequences in String Topology
Creators: name: Meier, Lennart
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Topology (math.AT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 55P50, 55T10, 57R19, 58D15

description: In this paper, we investigate the behaviour of the Serre spectral sequence with respect to the algebraic structures of string topology in generalized homology theories, specificially with the Chas-Sullivan product and the corresponding coproduct and module structures. We prove compatibility for two kinds of fibre bundles: the fibre bundle $Ω^n M \to L^n M \to M$ for an $h_*$-oriented manifold $M$ and the looped fibre bundle $L^n F \to L^n E \to L^n B$ of a fibre bunde $F \to E \to B$ of $h_*$-oriented manifolds. Our method lies in the construction of Gysin morphisms of spectral sequences. We apply these results to study the ordinary homology of the free loop spaces of sphere bundles and generalized homologies of the free loop spaces of spheres and projective spaces.
description: 33 pages