cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Efficient and Accurate Hyperspectral Image Demosaicing with Neural Network Architectures
Creators: name: Wisotzky, Eric L.
name: Wallburg, Lara
name: Hilsmann, Anna
name: Eisert, Peter
name: Wittenberg, Thomas
name: Göb, Stephan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Neural network architectures for image demosaicing have been become more and more complex. This results in long training periods of such deep networks and the size of the networks is huge. These two factors prevent practical implementation and usage of the networks in real-time platforms, which generally only have limited resources. This study investigates the effectiveness of neural network architectures in hyperspectral image demosaicing. We introduce a range of network models and modifications, and compare them with classical interpolation methods and existing reference network approaches. The aim is to identify robust and efficient performing network architectures. Our evaluation is conducted on two datasets, "SimpleData" and "SimRealData," representing different degrees of realism in multispectral filter array (MSFA) data. The results indicate that our networks outperform or match reference models in both datasets demonstrating exceptional performance. Notably, our approach focuses on achieving correct spectral reconstruction rather than just visual appeal, and this emphasis is supported by quantitative and qualitative assessments. Furthermore, our findings suggest that efficient demosaicing solutions, which require fewer parameters, are essential for practical applications. This research contributes valuable insights into hyperspectral imaging and its potential applications in various fields, including medical imaging.
description: 10 pages, accepted at Visapp 2024
Creación de un cuadro de mando integral mediante una hoja de cálculo para evaluación diagnóstica en el curso Recursos Informáticos
Creators: name: Durán-Berrocal, Ronny
Publisher: name: Zenodo
Year: 2021
Subjects: creación
cuadro de mando integral
hoja de cálculo
evaluación diagnóstica
Recursos Informáticos

description: Este póster se enmarca en las actividades del curso Publicaciones Científicas impartido en el marco del Programa de Capacitación y Actualización Académica del Centro de Formación Pedagógica y Tecnología Educativa de la Universidad Técnica Nacional de Costa Rica.
Die Freunde im und die Freude am Fernsehen
Creators: name: Ovcina Cajacob, Amina
Publisher: name: Medienimpulse
Year: 2012

description: Das Ziel der vorliegenden Arbeit besteht darin, die Wirkungen von Popstars und Popbands auf Jugendliche (13- bis 17-Jährige) zu erforschen. Im Mittelpunkt der Interessen steht die Frage, welche Wirkungen aus der Rezeption von Musiksendungen (bzw. Videoclips von Musiksendern) entstehen und welche Charakteristika innerhalb der aufgebauten Beziehungen zu den Stars bemerkbar sind. Andererseits wurden die Unterschiede und Parallelen zwischen parasozialen Beziehungen zu den Stars und orthosozialen Beziehungen aufgezeigt. Im Zusammenhang mit der empirischen Untersuchung bezieht sich die Autorin auf den Uses-and-Gratifications-Approach , wobei die bedürfnissbefriedigenden Wirkungen von Musikkanälen und den dazu gehörigen Popstars im Mittelpunkt stehen. Mit Hilfe des Uses-and-Gratifications-Approach wird angenommen, dass das Konsumieren der Musiksendungen und der Musikstars von den Jugendlichen gezielt zur Befriedigung bestimmter Bedürfnisse eingesetzt wird.
description: Medienimpulse, Bd. 50 Nr. 3 (2012): 3/2012 - PädagogInnenbildung Neu
Cosmic microwave background constraints on extended dark matter objects
Creators: name: Croon, Djuna
name: Muñoz, Sergio Sevillano
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Primordially formed extended dark objects would accrete baryonic matter and impact the ionisation history of the Universe. Insisting on consistency with the anisotropies of the cosmic microwave background, we derive constraints on the dark matter fraction for various classes of objects, of different sizes. We introduce a novel scaling technique to speed up numerical calculations and release our calculation framework in the form of a Mathematica notebook. Conservatively, we focus on spherical accretion and collisional ionisation. We find strong constraints limiting the dark matter fraction to subpercent level for objects of up to $10^4$ AU in size.
description: 23 pages, 8 figures, Code available at:https://gitlab.com/SergioSevillano/edo-accretion
Propuesta pedagógica que incorpora el tema: "Cultura ambiental para el desarrollo sostenible" en el planeamiento didáctico y en los procesos de aprendizaje de la enseñanza de Estadística
Creators: name: Caiceda, Anyela Salguero
Publisher: name: Zenodo
Year: 2021

description: Este Poster es el producto de un curso impartido por la Universidad Técnica Nacional denominado Publicaciones científicas
General criterion for non-Hermitian skin effects and Application: Fock space skin effects in many body systems
Creators: name: Shimomura, Kenji
name: Sato, Masatoshi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Non-Hermiticity enables macroscopic accumulation of bulk states, named non-Hermitian skin effects. The non-Hermitian skin effects are well-established for single-particle systems, but their proper characterization for general systems is elusive. Here, we propose a general criterion of non-Hermitian skin effects, which works for any finite-dimensional system evolved by a linear operator. The applicable systems include many-body systems and network systems. A system meeting the criterion exhibits enhanced non-normality of the evolution operator, accompanied by exceptional characteristics intrinsic to non-Hermitian systems. Applying the criterion, we discover a new type of non-Hermitian skin effect in many-body systems, which we dub the Fock space skin effect. We also discuss the Fock space skin effect-induced slow dynamics, which gives an experimental signal for the Fock space skin effect.
description: 7+10 pages, 4+3 figures
Metodológicas Activas para el desarrollo de habilidades blandas: Una clave para el desarrollo de profesionales exitosos
Creators: name: Montoya, Xiomara Carrillo
Publisher: name: Zenodo
Year: 2021
Subjects: Educación universitaria
Habilidades blandas
Metodologías activas

description: Este póster se enmarca en las actividades del curso de Publicaciones Científicas brindado en el marco del Programa de Capacitación y Actualización Académica del Centro de Fomación Pedagógica y Tecnología Educativa de la Universidad Técnica Nacional de Costa Rica.
Parity violation in $d \vecγ -> np$ with pionless effective theory
Creators: name: Hyun, C. H.
name: Shin, J. W.
name: Ando, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We consider a pionless effective theory with dibaryon fields for the description of the weak process involving two nucleons. We construct leading order Lagrangians that contain nucleon-dibaryon weak coupling constants. We calculate the physical observable in the photodisintegration of the deuteron at threshold and obtain the result in terms of the nucleon-dibaryon weak coupling constants. Relation to existing calculations is discussed.
description: Contribution to "Fourth Asia-Pacific Conference on Few-Body Problems in Physics 2008", Depok, Indonesia, August 19-23, 2008
Desafíos y oportunidades que enfrentan los estudiantes de Práctica Profesional Supervisada en la carrera de Bachillerato en Gestión de Empresas de Hospedaje y Gastronómicas de la Universidad Técnica Nacional durante el III cuatrimestre 2021.
Creators: name: Zamora-Vargas, Esteban-Alonso
Publisher: name: Zenodo
Year: 2021
Subjects: docencia
práctica profesional supervisada
educación técnica
investigación universitaria

description: Este poster se enmarca en las actividades del curso de Publicaciones Científicas brindado en el marco del Programa de Capacitación y Actualización Académica del Centro de Formación Pedagógica y Tecnología Educativa de la Universidad Técnica Nacional Costa Rica.
Selbstreflexivität im Computerspiel. Theoretische, analytische und funktionale Zugänge zum Phänomen autothematischer Strategien in Games
Creators: name: Stingeder, Karl H.
Publisher: name: Medienimpulse
Year: 2012

description: Medienimpulse, Bd. 50 Nr. 3 (2012): 3/2012 - PädagogInnenbildung Neu
A bi-Hamiltonian supersymmetric geodesic equation
Creators: name: Lenells, Jonatan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 37K10; 17A70

description: A supersymmetric extension of the Hunter-Saxton equation is constructed. We present its bi-Hamiltonian structure and show that it arises geometrically as a geodesic equation on the space of superdiffeomorphisms of the circle that leave a point fixed endowed with a right-invariant metric.
description: 9 pages, no figures
Die Lücke als Aufforderung. Comicadaptionen von Franz Kafkas Leben und Werk
Creators: name: Wintersteiger, Christina
Publisher: name: Medienimpulse
Year: 2014

description: Medienimpulse, Bd. 51 Nr. 3 (2013): 3/2013 - Visuelle Historiografien/Comics zwischen Reflexion und Konstruktion von Geschichte(n)
Merger of Black Holes in the Galactic Center
Creators: name: Koch, F. Elliott
name: Hansen, Bradley M. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of three body simulations focused on understanding the fates of intermediate mass black holes (IBH) that drift within the central 0.5 pc of the Galaxy. In particular, we modeled the interactions between pairs of $4000 {\rm M}_{\odot}$ black holes as they orbit a central blac k hole of mass $4 \times 10^6 {\rm M}_{\odot}$. The simulations performed assume a Schwarzschild geometry and account for Chandrasekhar dynamical friction as well as acceleration resulting from energy lost due to gravitational radiation. We found the branching ratio for one of the orbiting IBHs to merge with the CBH was 0.95 and is independent of the inner IBH's initial eccentricity as well as the rate of sinking. This, coupled with an infall rate of $\sim 10^7 $ yrs for an IBH to drift into the Galactic center, results in an IBH-CBH merger every $\lesssim 11$ Myrs. Lastly we found that the IBH-IBH-CBH triple body system ``resets'' itself, in the sense that a system with an inner I BH with an initially circular orbit generally left behind an IBH with a large eccentricity, whereas a system in which the inner IBH had a high eccentricity ($e_0 \sim 0.9$) usually left a remnant with low eccentricity. Branching ratios for different outcomes are also similar in the two cases.
description: Official paper to appear in November 2008 issue of ApJ
Visual born Witnesses: Zeugenschaften der visiblen Kamera
Creators: name: Bächler, Maja
Publisher: name: Medienimpulse
Year: 2013

description: Maja Bächler beschreibt die Filmspuren der Geschichte von Natural Born Killers (1994), indem sie von dieser Quelle ausgehend die Rolle und Funktion der visiblen Kamera untersucht. Sie zeichnet nach, welche Rolle die Filmkamera im Film hat, wenn sie selbst als vergegenständlichtes und objektiviertes Ding auf der Leinwand erscheint. Die "sichtbare Kamera" hat eine spezifische Rolle in der Filmgeschichte und auch in der Geschichte des mordenden Liebespärchens Mickey und Mallory Knox, das selbst unter häuslicher und medialer Gewalt gelitten hat. Die Analyse widmet sich also auch sozialgeschichtlichen Fragen der "symbolischen Gewalt", wobei die visible Kamera – und d. h. oft die Handkamera – jene Funktion übernimmt, die traditionell dem Zeugen und der Zeugenschaft zugeordnet ist. Denn die von Bächler des Weiteren untersuchten Filme handeln alle von Kriminalfällen, weshalb die visible Kamera Beweisverfahren wie in einem Strafprozess abbildet und gleichzeitig produziert. Sie wird dabei auch zum richterlichen "Auge des Publikums" und setzt so als technische Bedingung ein juristisches Feld in Gang.
description: Medienimpulse, Bd. 51 Nr. 3 (2013): 3/2013 - Visuelle Historiografien/Comics zwischen Reflexion und Konstruktion von Geschichte(n)
Constraint quantisation of a worldline system invariant under reciprocal relativity. II
Creators: name: Jarvis, P. D.
name: Morgan, S. O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the world-line quantisation of a system invariant under the symmetries of reciprocal relativity. Imposition of the first class constraint, the generator of local time reparametrisations, on physical states enforces identification of the world-line cosmological constant with a fixed value of the quadratic Casimir of the quaplectic symmetry group Q(3,1) ~ U(3,1) x H(4), the semi-direct product of the pseudo-unitary group with the Weyl-Heisenberg group. In our previous paper, J Phys A 40 (2007) 12095--12111, the `spin' degrees of freedom were handled as covariant oscillators, leading to a unique choice of cosmological constant, required for projecting out negative-norm states from the physical gauge-invariant states. In the present paper the spin degrees of freedom are treated as standard oscillators with positive norm states (wherein Lorentz boosts are not number-conserving in the auxiliary space; reciprocal transformations are of course not spin-conserving in general). As in the covariant approach, the spectrum of the square of the energy-momentum vector is continuous over the entire real line, and thus includes tachyonic (spacelike) and null branches. Adopting standard frames, the Wigner method on each branch is implemented, to decompose the auxiliary space into unitary irreducible representations of the respective little algebras and additional degeneracy algebras. The physical state space is vastly enriched as compared with the covariant approach, and contains towers of integer spin massive states, as well as unconventional massless representations, with continuous Euclidean momentum and arbitrary integer helicity.
description: 21 pages, LaTeX
Double-Spinor Superstrings on Coset Superspaces
Creators: name: Kunitomo, Hiroshi
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The double-spinor formalism, proposed by Aisaka and Kazama, provides a basis for the pure-spinor formalism, which allows manifestly super-Poincare covariant quantization of superstrings. We extend it to the case of backgrounds realized by coset superspaces. A general method constructing reparametrization invariant action is given using two concrete examples, the flat space-time and AdS(5)xS(5). We find that it is natural to double not only the spinor coordinates but the whole superspace for describing double-spinor superstrings on such backgrounds. The reparametrization invariant action has local symmetries compensating those extra degrees of freedom, which guarantee the equivalence to the Green-Schwarz formalism.
description: 14pages, no figure, PTPTeX; v2, references added; v3, english is improved, version appeared in PTP; v4, a reference added
Dynamical Edge Modes and Entanglement in Maxwell Theory
Creators: name: Ball, Adam
name: Law, Y. T. Albert
name: Wong, Gabriel
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Previous work on black hole partition functions and entanglement entropy suggests the existence of "edge" degrees of freedom living on the (stretched) horizon. We identify a local and "shrinkable" boundary condition on the stretched horizon that gives rise to such degrees of freedom. They can be interpreted as the Goldstone bosons of gauge transformations supported on the boundary, with the electric field component normal to the boundary as their symplectic conjugate. Applying the covariant phase space formalism for manifolds with boundary, we show that both the symplectic form and Hamiltonian exhibit a bulk-edge split. We then show that the thermal edge partition function is that of a codimension-two ghost compact scalar living on the horizon. In the context of a de Sitter static patch, this agrees with the edge partition functions found by Anninos et al. in arbitrary dimensions. It also yields a 4D entanglement entropy consistent with the conformal anomaly. Generalizing to Proca theory, we find that the prescription of Donnelly and Wall reproduces existing results for its edge partition function, while its classical phase space does not exhibit a bulk-edge split.
description: Published version. 46 pages + 5 appendices. 9 figures
Collision Avoidance Safety Filter for an Autonomous E-Scooter using Ultrasonic Sensors
Creators: name: Strässer, Robin
name: Seidel, Marc
name: Brändle, Felix
name: Meister, David
name: Soloperto, Raffaele
name: Ferrer, David Hambach
name: Allgöwer, Frank
Publisher: name: arXiv
Year: 2024
Subjects: subject: Systems and Control (eess.SY)
subject: Robotics (cs.RO)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In this paper, we propose a collision avoidance safety filter for autonomous electric scooters to enable safe operation of such vehicles in pedestrian areas. In particular, we employ multiple low-cost ultrasonic sensors to detect a wide range of possible obstacles in front of the e-scooter. Based on possibly faulty distance measurements, we design a filter to mitigate measurement noise and missing values as well as a gain-scheduled controller to limit the velocity commanded to the e-scooter when required due to imminent collisions. The proposed controller structure is able to prevent collisions with unknown obstacles by deploying a reduced safe velocity ensuring a sufficiently large safety distance. The collision avoidance approach is designed such that it may be easily deployed in similar applications of general micromobility vehicles. The effectiveness of our proposed safety filter is demonstrated in real-world experiments.
description: Accepted for presentation at the 17th IFAC Symposium on Control in Transportation Systems (CTS 2024)
Compact stellar systems and cluster environments
Creators: name: Firth, P.
name: Drinkwater, M. J.
name: Karick, A. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have extended the search for luminous (M_{b_J} <= -10.5) compact stellar systems (CSSs) in the Virgo and Fornax galaxy clusters by targeting with the recently commissioned AAOmega spectrograph three cluster environments -- the cluster cores around M87 and NGC 1399, intracluster space, and a major galaxy merger site (NGC 1316). We have significantly increased the number of redshift-confirmed CSSs in the Virgo cluster core and located three Virgo intracluster globular clusters (IGCs) at a large distance from M87 (154-173 arcmin or ~750-850 kpc) -- the first isolated IGCs to be redshift-confirmed. We estimate luminous CSS populations in each cluster environment, and compare their kinematic and photometric properties. We find that (1) the estimated luminous CSS population in the Virgo cluster core is half of that in Fornax, possibly reflecting the more relaxed dynamical status of the latter; (2) in both clusters the luminous CSS velocity dispersions are less than those of the cD galaxy GC system or cluster dE galaxies, suggesting luminous CSSs have less energetic orbits; (3) Fornax has a sub-population of cluster core luminous CSSs that are redder and presumably more metal-rich than those found in Virgo; (4) no luminous CSSs were found in a 10-20 arcmin (60-130 kpc) radial arc east of the 3 Gyr old NGC 1316 galaxy merger remnant or in the adjacent intracluster region, implying that any luminous CSSs created in the galaxy merger have not been widely dispersed.
description: 20 pages, 15 figures, 8 tables
Produktion von Screencasts mit Screencast-O-Matic
Creators: name: Studencki, Felix
Publisher: name: Medienimpulse
Year: 2013

description: Medienimpulse, Bd. 51 Nr. 3 (2013): 3/2013 - Visuelle Historiografien/Comics zwischen Reflexion und Konstruktion von Geschichte(n)
Modelo de competitividad empresarial para la vinculación de las Mipymes al sector productivo industrial de siembra de Caña de Azúcar en Guanacaste
Creators: name: Alcócer, Roberto Rodríguez
Publisher: name: Zenodo
Year: 2021
Subjects: Competitividad Empresarial
Gestión Empresarial
Gestión de la Calidad
Gestión de Innovación

description: Este poster se enmarca dentro de las actividades del curso Publicaciones Científicas brindado en el marco del Programa de Capacitación y Actualización Académica de Centro de Formación Pedagógica y Tecnología Educativa de la Universidad Técnica Nacional de Costa Rica.
Supervised Learning via Ensembles of Diverse Functional Representations: the Functional Voting Classifier
Creators: name: Riccio, Donato
name: Maturo, Fabrizio
name: Romano, Elvira
Publisher: name: arXiv
Year: 2024
Subjects: subject: Methodology (stat.ME)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: 46N30, 62-08

description: Many conventional statistical and machine learning methods face challenges when applied directly to high dimensional temporal observations. In recent decades, Functional Data Analysis (FDA) has gained widespread popularity as a framework for modeling and analyzing data that are, by their nature, functions in the domain of time. Although supervised classification has been extensively explored in recent decades within the FDA literature, ensemble learning of functional classifiers has only recently emerged as a topic of significant interest. Thus, the latter subject presents unexplored facets and challenges from various statistical perspectives. The focal point of this paper lies in the realm of ensemble learning for functional data and aims to show how different functional data representations can be used to train ensemble members and how base model predictions can be combined through majority voting. The so-called Functional Voting Classifier (FVC) is proposed to demonstrate how different functional representations leading to augmented diversity can increase predictive accuracy. Many real-world datasets from several domains are used to display that the FVC can significantly enhance performance compared to individual models. The framework presented provides a foundation for voting ensembles with functional data and can stimulate a highly encouraging line of research in the FDA context.
description: 35 pages, 20 figures
Luminosity dependence of the electron temperature in the bright hard state of the black hole candidate GX 339--4
Creators: name: Miyakawa, Takehiro
name: Yamaoka, Kazutaka
name: Homan, Jeroen
name: Saito, Koji
name: Dotani, Tadayasu
name: Yoshida, Atsumasa
name: Inoue, Hajime
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have analyzed 200 Rossi X-ray Timing Explorer observations of the black hole candidate GX 339--4, all from the bright hard state periods between 1996 and 2005. Purpose of our study is to investigate the radiation mechanisms in the hard state of GX 339--4. The broadband 3--200 keV spectra were successfully modeled by a simple analytic model, power--law with an exponential cut-off modified with a smeared edge. The obtained energy cut-off ($E_{\rm{cut}}$) was distributed over 50--200 keV, and the photon index over 1.4--1.7. We found a clear anti-correlation ($E_{\rm{cut}} \propto L^{-0.70\pm0.06}$) between the X-ray luminosity ($L$) in 2--200 keV and $E_{\rm{cut}}$, when $L$ is larger than $7 \times 10^{37}$ erg s$^{-1}$ (assuming a distance of 8 kpc), while $E_{\rm{cut}}$ is roughly constant at around 200 keV when $L$ is smaller than $7 \times 10^{37}$ erg s$^{-1}$. This anti-correlation remained unchanged by adopting a more physical thermal Comptonization model, which resulted in the anti-correlation that can be expressed as $kT_{\rm{e}} \propto L^{-0.24\pm0.06}$. These anti-correlations can be quantitatively explained by a picture in which the energy-flow rate from protons to electrons balances with the inverse Compton cooling.
description: Accepted by PASJ. 15 pages, 8 figures
Ein Schlüssel zur Zukunft digitaler Bildungsmedien
Creators: name: Losehand, Joachim
Publisher: name: Medienimpulse
Year: 2013

description: Medienimpulse, Bd. 51 Nr. 3 (2013): 3/2013 - Visuelle Historiografien/Comics zwischen Reflexion und Konstruktion von Geschichte(n)
Enhancing MRI-Based Classification of Alzheimer's Disease with Explainable 3D Hybrid Compact Convolutional Transformers
Creators: name: Majee, Arindam
name: Gupta, Avisek
name: Raha, Sourav
name: Das, Swagatam
Publisher: name: arXiv
Year: 2024
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Alzheimer's disease (AD), characterized by progressive cognitive decline and memory loss, presents a formidable global health challenge, underscoring the critical importance of early and precise diagnosis for timely interventions and enhanced patient outcomes. While MRI scans provide valuable insights into brain structures, traditional analysis methods often struggle to discern intricate 3D patterns crucial for AD identification. Addressing this challenge, we introduce an alternative end-to-end deep learning model, the 3D Hybrid Compact Convolutional Transformers 3D (HCCT). By synergistically combining convolutional neural networks (CNNs) and vision transformers (ViTs), the 3D HCCT adeptly captures both local features and long-range relationships within 3D MRI scans. Extensive evaluations on prominent AD benchmark dataset, ADNI, demonstrate the 3D HCCT's superior performance, surpassing state of the art CNN and transformer-based methods in classification accuracy. Its robust generalization capability and interpretability marks a significant stride in AD classification from 3D MRI scans, promising more accurate and reliable diagnoses for improved patient care and superior clinical outcomes.
description: 8 pages, 4 figures
Piero di Cosimo’s Visitation altarpiece (with an appendix on the handclasp gesture)
Creators: name: Sexsmith, Dennis Watson
Publisher: name: University of British Columbia
Year: 2010

description: Piero di Cosimo's Santo Spirito Visitation is examined in its historical and religious context, and the extent to which a specific sign gesture contributes to the meaning of the work is determined. The first chapter outlines the establishment of the feast and considers doctrinal interpretations of the Visitation. This is followed by a survey of the visual iconography of the theme in Early Christian, medieval, and early Renaissance art. A history of the handclasp is contained in a separate appendix. This follows the gesture from the dextrarum iunctio of Rome, through medieval uses reflected in visual sources, to the diversification of uses in fifteenth century art. Attention is given to distinctions of meaning in Christian and humanist imagery, as determined through textual and visual evidence. The meaning of Piero di Cosimo's Santo Spirito Visitation is presented in the final chapter. This discussion covers reasons for the importance of Florence in the emergence of the autonomous Visitation altarpiece, the relationship of the work to the theme's role as an instrument of church unity, the function of the painting as a personal donation of the Capponi family, and the specific part played by the theme of rebirth and renewal in this work. The figures of Mary and Elizabeth mark the commencement of the messianic era by a handclasp which represents the renewed union between god and man. A brief discussion of the post-Piero di Cosimo use of the handclasp Visitation follows. A further discussion of Piero di Cosimo's religious iconography is contained in the first appendix.
Über die Verknüpfung von Hörspiel und Pädagogik
Creators: name: Lobensommer, Leah
Publisher: name: Medienimpulse
Year: 2013

description: Dieser Artikel legt die Ergebnisse einer Bachelorarbeit zum Thema „Hörspiel als Lernmethode unter besonderer Berücksichtigung sonderpädagogischer Aspekte“ dar. Die Beziehung von Hörspiel und Pädagogik wird durchleuchtet und zeitgemäße Ansätze zur Verwirklichung eines Hörspielprojektes mit Jugendlichen werden dargestellt. Mit Hilfe der Aussagen der qualitativen Forschung wird ein Fazit und ein Ausblick in die Zukunft gewagt.
description: Medienimpulse, Bd. 51 Nr. 3 (2013): 3/2013 - Visuelle Historiografien/Comics zwischen Reflexion und Konstruktion von Geschichte(n)
Hierarchical Open-Vocabulary 3D Scene Graphs for Language-Grounded Robot Navigation
Creators: name: Werby, Abdelrhman
name: Huang, Chenguang
name: Büchner, Martin
name: Valada, Abhinav
name: Burgard, Wolfram
Publisher: name: arXiv
Year: 2024
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Recent open-vocabulary robot mapping methods enrich dense geometric maps with pre-trained visual-language features. While these maps allow for the prediction of point-wise saliency maps when queried for a certain language concept, large-scale environments and abstract queries beyond the object level still pose a considerable hurdle, ultimately limiting language-grounded robotic navigation. In this work, we present HOV-SG, a hierarchical open-vocabulary 3D scene graph mapping approach for language-grounded robot navigation. Leveraging open-vocabulary vision foundation models, we first obtain state-of-the-art open-vocabulary segment-level maps in 3D and subsequently construct a 3D scene graph hierarchy consisting of floor, room, and object concepts, each enriched with open-vocabulary features. Our approach is able to represent multi-story buildings and allows robotic traversal of those using a cross-floor Voronoi graph. HOV-SG is evaluated on three distinct datasets and surpasses previous baselines in open-vocabulary semantic accuracy on the object, room, and floor level while producing a 75% reduction in representation size compared to dense open-vocabulary maps. In order to prove the efficacy and generalization capabilities of HOV-SG, we showcase successful long-horizon language-conditioned robot navigation within real-world multi-storage environments. We provide code and trial video data at http://hovsg.github.io/.
description: Code and video are available at http://hovsg.github.io/
El maíz alimento ancestral y su reactivación en la dieta alimenticia costarricense
Creators: name: Prado-Y-Juárez, Ale
Publisher: name: Zenodo
Year: 2021
Subjects: aprado@utn.ac.cr

description: Este póster se enmarca en las actividades del curso de Publicaciones Científicas brindado en el marco del Programa de Capacitación y Actualización Académica del Centro de Formación Pedagógica y Tecnología Educativa de la Universidad Técnica Nacional de Costa Rica.
Videopodcasts in der Hochschullehre – Angehende Lehrkräfte und praktische Mediengestaltung
Creators: name: Rode, Daniel
name: Stern, Martin
Publisher: name: Medienimpulse
Year: 2014

description: Medienimpulse, Bd. 52 Nr. 3 (2014): 3/2014 - Medienproduktion im Alltag von Kindern und Jugendlichen
123Sb-NQR study of unconventional superconductivity in the filled skutterudite heavy-fermion compound PrOs4Sb12 under high pressure up to P = 3.82 GPa
Creators: name: Kawasaki, S.
name: Katayama, K.
name: Sugawara, H.
name: Kikuchi, D.
name: Sato, H.
name: Zheng, G. -q.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report $^{123}$Sb nuclear quadrupole resonance (NQR) measurements of the filled skutterudite heavy-fermion superconductor PrOs$_4$Sb$_{12}$ under high pressure. The temperature dependence of NQR frequency and the spin-lattice relaxation rate $1/T_1$ indicate that the crystal-electric-field splitting $Δ_{\rm CEF}$ between the ground state $Γ_1$ singlet and the first excited state $Γ_4^{(2)}$ triplet decreases with increasing pressure. Ac-susceptibility measurements indicate that the superconducting transition temperature ($T_{\rm c}$) also decreases with increasing pressure. However, above $P$ $\sim$ 2 GPa, both $Δ_{\rm CEF}$ and $T_{\rm c}$ do not depend on external pressure up to $P$ = 3.82 GPa. These pressure dependences of $Δ_{\rm CEF}$ and $T_{\rm c}$ suggest an intimate relationship between quadrupole excitations associated with the $Γ_4^{(2)}$ level and unconventional superconductivity in PrOs$_4$Sb$_{12}$. In the superconducting state, 1/$T_1$ below $T_{\rm c}$ = 1.55 and 1.57 K at $P$ = 1.91 and 2.63 GPa shows a power-law temperature variations and are proportional to $T^5$ at temperatures considerably below $T_{\rm c}$. These data can be well fitted by the gap model $Δ(θ) = Δ_0\sinθ$ with $Δ_0$ = 3.08 $k_{\rm B}T_{\rm c}$ and 3.04 $k_{\rm B}T_{\rm c}$ for $P$ = 1.91 and 2.63 GPa, respectively. The results indicate there exists point nodes in the gap function.
description: 6pages, 9figures
How planets grow by pebble accretion IV: Envelope opacity trends from sedimenting dust and pebbles
Creators: name: Brouwers, M. G.
name: Ormel, C. W.
name: Bonsor, A.
name: Vazan, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The amount of nebular gas that a planet can bind is limited by its cooling rate, which is set by the opacity of its envelope. Accreting dust and pebbles contribute to the envelope opacity and, thus, influence the outcome of planet formation. Our aim is to model the size evolution and opacity contribution of solids inside planetary envelopes. We then use the resultant opacity relations to study emergent trends in planet formation. We design a model for the opacity of solids in planetary envelopes that accounts for the growth, fragmentation and erosion of pebbles during their sedimentation. We formulate analytical expressions for the opacity of pebbles and dust and map out their trends as a function of depth, planet mass, distance and accretion rate. We find that the accretion of pebbles rather than planetesimals can produce fully convective envelopes, but only in lower-mass planets that reside in the outer disk or in those that are accreting pebbles at a high rate. In these conditions, pebble sizes are limited by fragmentation and erosion, allowing them to pile up in the envelope. At higher planetary masses or reduced accretion rates, a different regime applies where the sizes of sedimenting pebbles are only limited by their rate of growth. The opacity in this growth-limited regime is much lower, steeply declines with depth and planet mass but is invariant with the pebble mass flux. Our results imply that the opacity of a forming planetary envelope can not be approximated by a value that is constant with either depth or planet mass. When applied to the Solar System, we argue that Uranus and Neptune could not have maintained a sufficiently high opacity to avoid runaway gas accretion unless they both experienced sufficiently rapid accretion of solids and formed late.
description: Accepted to A&A. Comments are welcome
Medien als Lernform und die Trimediale Redaktion
Creators: name: Hilzensauer, Wolf
name: Naringbauer, Alex
Publisher: name: Medienimpulse
Year: 2014

description: Der vorliegende Artikel beschreibt ein Konzept für eine handlungsorientierte Medienpädagogik im Bildungsbereich. Im Mittelpunkt steht dabei die SO!-Campusredaktion, die als Methode für expansives Lernen die Möglichkeit bietet, unabhängig von Thema oder Medium die Verantwortung für den Lernprozess in die Hände der Lernenden zu legen. Der Dokumentation von Reflexion über den Lernprozess wird dabei eine besondere Bedeutung zugesprochen. Gleichzeitig werden unterschiedliche mediale Gestaltungsmöglichkeiten (Audio/Radio, Video/Fernsehen und Zeitung – sowohl als Print- als auch als Onlinemedium) vorgestellt, die durch das Konzept BYOD – bring your own device – auch einfach und niederschwellig im Bildungskontext umsetzbar sind. Dadurch ergeben sich innovative Möglichkeiten, einen Lernprozess sichtbar zu machen und gleichzeitig eine Grundlage für eine alternative Leistungsbeurteilung anzubieten. Die SO!-Campusredaktion wird derzeit an der Pädagogischen Hochschule Salzburg in Kooperation mit dem Communitysender FS1 und der Radiofabrik entwickelt und erprobt. Community Medien nehmen als MedienpartnerInnen eine bedeutende Stellung ein: Durch ihren offenen Zugang zu Know How und Equipment sowie durch die Möglichkeit, Medienproduktionen über die verfügbaren Distibutionskanäle (Radiofrequenz oder Sendeplatz) einer breiten Bevölkerung zugänglich zu machen, gewinnt die Medienpädagogik einen wichtigen Mehrwert in ihrer schulischen und außerschulischen Arbeit. (Dieser Artikel knüpft an den Artikel " BYOD, Smartphonefilme und webbasierte Videoschnittprogramme " der Medienimpulse, Ausgabe 2/2014, an).
description: Medienimpulse, Bd. 52 Nr. 3 (2014): 3/2014 - Medienproduktion im Alltag von Kindern und Jugendlichen
Real-World Superconducting Stability Framework
Creators: name: Guillen, Roberto
Publisher: name: Zenodo
Year: 2025

description: This document presents a structured framework for stabilizing superconductors under real-world conditions. Based on extensive simulations and real-world validation, this study explores charge flow synchronization, phase coherence reinforcement, and controlled quantum energy dissipation to improve superconducting longevity. While these findings build on existing research, this work aims to provide a practical approach that can be further refined through experimental validation and collaborative research. The goal is to contribute to ongoing discussions in the field and offer insights that may assist in the development of more stable superconducting systems.
Habitusformen von Eltern im Kontext der Computerspielnutzung ihrer Kinder
Creators: name: Friedrichs-Liesenkötter, Henrike
name: Gross, Friederike Von
name: Herde, Katharina
name: Sander, Uwe
Publisher: name: Medienimpulse
Year: 2014

description: Dieser Artikel stellt die Sichtweisen von Eltern auf das Computerspielverhalten ihrer Kinder und ihr erzieherisches Handeln bezüglich des Computerspielens vor. Die Ergebnisse stammen aus einem Forschungsprojekt der Fakultät für Erziehungswissenschaft der Universität Bielefeld mit dem Titel "Computerspielnutzung aus Elternsicht". Die empirische Studie aus dem Jahr 2014 umfasst 28 leitfadengestützte Interviews mit Elternpaaren. Die Ergebnisse zeigen u. a., dass der mediale Habitus (Kommer/Biermann 2012) die Ausgestaltung des medienerzieherischen Habitus (Friedrichs 2013) beeinflusst; d. h. bspw., dass computerspielerfahrene Eltern ein differenzierteres Medienerziehungsverhalten im Hinblick auf Computerspiele zeigen, als Eltern, die keine eigenen Computerspielerfahrungen gemacht haben.
description: Medienimpulse, Bd. 52 Nr. 3 (2014): 3/2014 - Medienproduktion im Alltag von Kindern und Jugendlichen
FABLES: Evaluating faithfulness and content selection in book-length summarization
Creators: name: Kim, Yekyung
name: Chang, Yapei
name: Karpinska, Marzena
name: Garimella, Aparna
name: Manjunatha, Varun
name: Lo, Kyle
name: Goyal, Tanya
name: Iyyer, Mohit
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: While long-context large language models (LLMs) can technically summarize book-length documents (>100K tokens), the length and complexity of the documents have so far prohibited evaluations of input-dependent aspects like faithfulness. In this paper, we conduct the first large-scale human evaluation of faithfulness and content selection on LLM-generated summaries of fictional books. Our study mitigates the issue of data contamination by focusing on summaries of books published in 2023 or 2024, and we hire annotators who have fully read each book prior to the annotation task to minimize cost and cognitive burden. We collect FABLES, a dataset of annotations on 3,158 claims made in LLM-generated summaries of 26 books, at a cost of $5.2K USD, which allows us to rank LLM summarizers based on faithfulness: Claude-3-Opus significantly outperforms all closed-source LLMs, while the open-source Mixtral is on par with GPT-3.5-Turbo. An analysis of the annotations reveals that most unfaithful claims relate to events and character states, and they generally require indirect reasoning over the narrative to invalidate. While LLM-based auto-raters have proven reliable for factuality and coherence in other settings, we implement several LLM raters of faithfulness and find that none correlates strongly with human annotations, especially with regard to detecting unfaithful claims. Our experiments suggest that detecting unfaithful claims is an important future direction not only for summarization evaluation but also as a testbed for long-context understanding. Finally, we move beyond faithfulness by exploring content selection errors in book-length summarization: we develop a typology of omission errors related to crucial narrative elements and also identify a systematic over-emphasis on events occurring towards the end of the book.
description: preprint - 39 pages
Kalifen und Assassinen. Ägypten und der vordere Orient zur Zeit der ersten Kreuzzüge 1074–1171
Creators: name: Winkler, Paul
Publisher: name: Medienimpulse
Year: 2014

description: In das bunte Mosaik eines pluralistischen Orients entführt Heinz Halm auf Grundlage zahlreicher Originaldokumente. Das tradierte Bild eines religiös-politisch homogenen Orients zur Zeit der ersten Kreuzzüge wird korrigiert und machtspezifische hotspots, politisch-religiöse big-player , als auch Lokalherrscher charakterisiert. Von Eurozentrismus befreit, kreiert der Autor mit der rechten Balance zwischen Geschichten und Geschichte eine lebendig wirkende Atmosphäre, die gegenwärtigen religiösen Konflikten, Terror und westlichen Eingriffen zum Spiegel wird.
description: Medienimpulse, Bd. 52 Nr. 3 (2014): 3/2014 - Medienproduktion im Alltag von Kindern und Jugendlichen
Quantum Many-Body Calculations using Body-Centered Cubic Lattices
Creators: name: Song, Young-Ho
name: Kim, Youngman
name: Li, Ning
name: Lu, Bing-Nan
name: He, Rongzheng
name: Lee, Dean
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: It is often computationally advantageous to model space as a discrete set of points forming a lattice grid. This technique is particularly useful for computationally difficult problems such as quantum many-body systems. For reasons of simplicity and familiarity, nearly all quantum many-body calculations have been performed on simple cubic lattices. Since the removal of lattice artifacts is often an important concern, it would be useful to perform calculations using more than one lattice geometry. In this work we show how to perform quantum many-body calculations using auxiliary-field Monte Carlo simulations on a three-dimensional body-centered cubic (BCC) lattice. As a benchmark test we compute the ground state energy of 33 spin-up and 33 spin-down fermions in the unitary limit, which is an idealized limit where the interaction range is zero and scattering length is infinite. As a fraction of the free Fermi gas energy $E_{\rm FG}$, we find that the ground state energy is $E_0/E_{\rm FG}= 0.369(2), 0.371(2),$ using two different definitions of the finite-system energy ratio. This is in excellent agreement with recent results obtained on a cubic lattice \cite{He:2019ipt}. We find that the computational effort and performance on a BCC lattice is approximately the same as that for a cubic lattice with the same number of lattice points. We discuss how the lattice simulations with different geometries can be used to constrain the size lattice artifacts in simulations of continuum quantum many-body systems.
description: 13 pages, 7 figures
Benign saturation of ideal ballooning instability in a high-performance stellarator
Creators: name: Zhou, Yao
name: Aleynikova, K.
name: Liu, Chang
name: Ferraro, N. M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: To examine the robustness of the designed 5% $β$-limit for high-performance operation in the W7-X stellarator, we undertake nonlinear magnetohydrodynamic (MHD) simulations of pressure-driven instabilities using the M3D-$C^1$ code. Consistent with linear analyses, ideal ballooning instabilities occur as $β$ exceeds 5% in the standard configuration. Nonetheless, the modes saturate nonlinearly at relatively low levels without triggering large-scale crashes, even though confinement degradation worsens as $β$ increases. In contrast, in an alternative configuration with nearly zero magnetic shear, ideal interchange modes induce a pressure crash at $β= 1\%$. These results suggest that the standard W7-X configuration might have a soft $β$-limit that is fairly immune to major MHD events, which enhances the appeal of the stellarator approach to steady-state fusion reactors.
description: 6 pages, 5 figures
Light-Front Holography: A First Approximation to QCD
Creators: name: de Teramond, Guy F.
name: Brodsky, Stanley J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Starting from the Hamiltonian equation of motion in QCD, we identify an invariant light-front coordinate $ζ$ which allows the separation of the dynamics of quark and gluon binding from the kinematics of constituent spin and internal orbital angular momentum. The result is a single variable light-front Schrodinger equation for QCD which determines the eigenspectrum and the light-front wavefunctions of hadrons for general spin and orbital angular momentum. This light-front wave equation is equivalent to the equations of motion which describe the propagation of spin-$J$ modes on anti-de Sitter (AdS) space.
description: 4 pages. The limits of validity of the model are further discussed. To appear in Physical Review Letters