cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Limitations to Dynamical Error Suppression and Gate-Error Virtualization from Temporally Correlated Nonclassical Noise
Creators: name: Burgelman, Michiel
name: Wonglakhon, Nattaphong
name: Bernal-García, Diego N.
name: Paz-Silva, Gerardo A.
name: Viola, Lorenza
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Realistic multi-qubit noise processes often result in error mechanisms that are not captured by the probabilistic, Markovian error models commonly employed in circuit-level analyses of quantum fault-tolerance. By working within an open-quantum system Hamiltonian formulation, we revisit the validity of the notion of a constant gate error in the presence of noise that is both temporally correlated and nonclassical, and whose impact is mitigated through perfect instantaneous dynamical decoupling subject to finite timing constraints. We study a minimal exactly solvable single-qubit model under Gaussian quantum dephasing noise, showing that the fidelity of a dynamically protected idling gate can depend strongly on its location in the circuit and the history of applied control, even when the system-side error propagation is fully removed through perfect reset operations. For digital periodic control, we prove that, under mild conditions on the low-frequency behavior of the nonclassical noise spectrum, the gate fidelity saturates at a value that is strictly smaller than the one attainable in the absence of control history; the presence of high-frequency noise peaks is also found as especially harmful, due to the possible onset of control-induced resonance effects. We explicitly relate these features to the evolution of the bath statistics during the computation, which has not been fully accounted for in existing treatments. We find that only if decoupling can keep the qubit highly pure over a timescale larger than the correlation time of the noise, the bath approximately converges to its original statistics and a stable-in-time control performance is recovered. Implications of this costly re-equilibration of the quantum bath statistics for layered quantum fault-tolerant architectures are discussed.
description: 31 pages, 9 figures
title: Online Teamteaching als Inverted Classroom --- Erfahrungen aus den Pandemie-Semestern
Creators: name: Liebehenschel, Jens
name: Simon, Martin
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2022
Subjects: subject: Teamteaching
subject: Inverted Classroom
subject: Online-Lehre unter Pandemiebedingungen
subject: Differenzierung durch Zusatzmaterialien
subject: Differenzierung durch parallele Veranstaltungen

description: Bereits fünf Mal wurde das Modul 'Algorithmen und Datenstrukturen' der Informatik Bachelor-Studiengänge an der Frankfurt University of Applied Sciences als Großveranstaltung im Teamteaching angeboten. Es wird kontinuierlich weiterentwickelt, sowohl inhaltlich als auch didaktisch. In den beiden Sommersemestern 2020 und 2021 wurde, bedingt durch die COVID-19-Pandemie, die Veranstaltung im bewährten Teamteaching-Format, jedoch online und mit Elementen eines Inverted Classroom angeboten. Die Erfahrungen waren teilweise für die Lehrenden überraschend. In der vorliegenden Arbeit werden insbesondere diese beiden Pandemie-Semester im Detail analysiert und diskutiert. Ausblicken werden wir auf eine für den nächsten Zyklus geplante wesentliche Veränderung des Lehrformats, mit dem Ziel, der lernrelevanten Diversität der Studierenden noch besser gerecht zu werden. Das geplante Format ist sowohl in der Präsenz-als auch in der Online-Lehre einsetzbar.
title: Economics or MR quality controls: how can they fit in a tighter hospital budget?
Creators: name: Girard, Franck
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Education and training
subject: MR physics
subject: Professional issues
subject: MR
subject: Education
subject: Efficacy studies
subject: Perception image

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: The economic turmoil is putting a lot of pressure on the budget of the hospitals (ref 1 - 2 ) This poster will be looking at the economics of MR quality controls, and will answer to the question: is it useful to do these controls in a tighter...
Sonnenfleckenzeichnung Nr. 26880.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 03.04.1984, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1984

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Methodology for determining the electronic thermal conductivity of metals via direct non-equilibrium ab initio molecular dynamics
Creators: name: Yue, Sheng-Ying
name: Zhang, Xiaoliang
name: Stackhouse, Stephen
name: Qin, Guangzhao
name: Di Napoli, Edoardo
name: Hu, Ming
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Many physical properties of metals can be understood in terms of the free electron model, as proven by the Wiedemann-Franz law. According to this model, electronic thermal conductivity ($κ_{el}$) can be inferred from the Boltzmann transport equation (BTE). However, the BTE does not perform well for some complex metals, such as Cu. Moreover, the BTE cannot clearly describe the origin of the thermal energy carried by electrons or how this energy is transported in metals. The charge distribution of conduction electrons in metals is known to reflect the electrostatic potential (EP) of the ion cores. Based on this premise, we develop a new methodology for evaluating $κ_{el}$ by combining the free electron model and non-equilibrium ab initio molecular dynamics (NEAIMD) simulations. We demonstrate that the kinetic energy of thermally excited electrons originates from the energy of the spatial electrostatic potential oscillation (EPO), which is induced by the thermal motion of ion cores. This method directly predicts the $κ_{el}$ of pure metals with a high degree of accuracy.
description: 7 pages, 3 figures, with Supplementary Information of 19 pages, 7 figures and 7 tables
On the K-theory of C*-algebras arising from integral dynamics
Creators: name: Barlak, Selçuk
name: Omland, Tron
name: Stammeier, Nicolai
Publisher: name: arXiv
Year: 2015
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L05, 46L80 (Primary), 22D25, 11S82, 55T05 (Secondary)

description: We investigate the $K$-theory of unital UCT Kirchberg algebras $\mathcal{Q}_S$ arising from families $S$ of relatively prime numbers. It is shown that $K_*(\mathcal{Q}_S)$ is the direct sum of a free abelian group and a torsion group, each of which is realized by another distinct $C^*$-algebra naturally associated to $S$. The $C^*$-algebra representing the torsion part is identified with a natural subalgebra $\mathcal{A}_S$ of $\mathcal{Q}_S$. For the $K$-theory of $\mathcal{Q}_S$, the cardinality of $S$ determines the free part and is also relevant for the torsion part, for which the greatest common divisor $g_S$ of $\{p-1 : p \in S\}$ plays a central role as well. In the case where $\lvert S \rvert \leq 2$ or $g_S=1$ we obtain a complete classification for $\mathcal{Q}_S$. Our results support the conjecture that $\mathcal{A}_S$ coincides with $\otimes_{p \in S} \mathcal{O}_p$. This would lead to a complete classification of $\mathcal{Q}_S$, and is related to a conjecture about $k$-graphs.
description: 27 pages; v2: minor update in 5.7; v3: some typos corrected, one reference added, to appear in Ergodic Theory Dynam. Systems
Sonnenfleckenzeichnung Nr. 26945.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 29.06.1984, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1984

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Dynamics-based quantumness certification of continuous variables using time-independent Hamiltonians with one degree of freedom
Creators: name: Zaw, Lin Htoo
name: Scarani, Valerio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Dynamics-based certification of quantumness is an approach to witnessing the nonclassical character of some continuous-variable states, under the assumption that their dynamics is known. Contrary to other tests of nonclassicality for single systems, it does not require sequential measurements. This family of protocols was introduced for harmonic dynamics. In this work we discuss dynamics-based certification for one degree of freedom evolving under a generic time-independent Hamiltonian. We characterize the conditions under which such a certification is possible. Several examples are explicitly studied, some that are approximately harmonic in the limits of low energy (Kerr nonlinearities, the pendulum, and the Morse potential) and one that is not (the particle in an infinite well).
description: 22 pages, 21 figures. Final published version
title: Teaching during the Covid-19 Pandemic --- Online Programming Education
Creators: name: Speth, Sandro
name: Krieger, Niklas
name: Reißner, Georg
name: Becker, Steffen
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2022
Subjects: subject: Digital Lectures
subject: Programming Education
subject: Intelligent and Automated Tutoring System

description: Teaching programming skills is an essential part of the first-semester computer science curriculum. During the Covid-19, it became particularly challenging as, in particular, the essential exercise lessons had to be implemented virtually. Before the pandemic, we implemented didactic concepts like objects-first and gamification with the hamster simulator. They had to be transferred to the virtual setting as good as possible. In this paper, we report on the implementation of our virtual course programming and software development. In particular, we report on the lessons we learnt from our course implementation, which, overall, was relatively successful.
title: The vital role of ultrasonographic evaluation in acute scrotal pain
Creators: name: Batista, Alexandre
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Genital / Reproductive system male
subject: Emergency
subject: Soft tissues / Skin
subject: Ultrasound-Colour Doppler
subject: Ultrasound-Power Doppler
subject: Ultrasound-Spectral Doppler
subject: Complications
subject: Cost-effectiveness
subject: Diagnostic procedure
subject: Acute
subject: Infection
subject: Ischaemia / Infarction

description: Learning objectives Background Imaging findings OR Procedure details Conclusion Personal Information References
description: Learning objectives: To demonstrate the relevance of ultrasonography (US) combined with color flow Doppler in the diagnosis and therapeutical orientation of acute painful scrotum. To highline the optimal scanning technique in the before mentioned clinical setting. To...
Proyeksi Kecepatan Angin Dan Probabilitas Terjadinya Intermitensi Di Grid 3 Nusa, Pulau Nusa Penida Menggunakan Metode Principal Component Analysis
Creators: name: Wulanditya, Adisti
name: Sasmono, Sudarmono
name: Silalahi, Desri Kristina
Publisher: name: eProceedings of Engineering
Year: 2022

description: Abstrak—Dalam pemenuhan pasokan energi listrik, Pulau Nusa Penida menggunakan PLTD berbahan bakar Marine Fuel Oil (MFO) dengan daya yang dihasilkan 10 MW. Namun hal ini menyebabkan biaya bahan bakar yang tinggi dapat memicu biaya pokok penyediaan pembangkitan listrik yang cukup tinggi pula. Untuk mengatasi persoalan tersebut diharapkan di Pulau Nusa Penida dapat mengembangkan pembangkit tenaga listrik dengan menggunakan energi baru terbarukan (Renewable Energy) dikarenakan biaya bahan bakarnya bernilai 0. Penelitian proyeksi kecepatan angin ini dapat ditentukan dengan metode Principal Component Analysis yang menggunakan beberapa data kecepatan angin dan parameter atmosfer lainnya di Pulau Nusa Penida. Dengan metode ini parameter lain yang digunakan yaitu temperature, relative humidity, specific humidity, irradiation, radiation, air density, precipitation, dan surface pressure. Data yang didapatkan akan diolah menggunakan perangkat lunak SPSS sehingga didapatkan pemodelan dalam bentuk distribusi statistik. Model akhir memasukkan faktor ketidakpastian yang disimulasikan menggunakan simulasi Monte Carlo dengan bantuan perangkat lunak Crystal Ball. Setelah dilakukan penelitian didapatkan hasil yaitu empat variabel yang berpengaruh terhadap kecepatan angin, pemodelan korelasi kecepatan angin, dan probabilitas intermitensi terjadi dengan skenario worst case. Kata kunci— energi angin, proyeksi kecepatan angin, Principal Component Analysis, simulasi Monte Carlo
description: eProceedings of Engineering, Vol 9, No 5 (2022): Oktober 2022
Sonnenfleckenzeichnung Nr. 26929.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.06.1984, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1984

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Generalized Method of Moments for Estimating Parameters of Stochastic Reaction Networks
Creators: name: Lück, Alexander
name: Wolf, Verena
Publisher: name: arXiv
Year: 2016
Subjects: subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: Discrete-state stochastic models have become a well-established approach to describe biochemical reaction networks that are influenced by the inherent randomness of cellular events. In the last years severalmethods for accurately approximating the statistical moments of such models have become very popular since they allow an efficient analysis of complex networks. We propose a generalized method of moments approach for inferring the parameters of reaction networks based on a sophisticated matching of the statistical moments of the corresponding stochastic model and the sample moments of population snapshot data. The proposed parameter estimation method exploits recently developed moment-based approximations and provides estimators with desirable statistical properties when a large number of samples is available. We demonstrate the usefulness and efficiency of the inference method on two case studies. The generalized method of moments provides accurate and fast estimations of unknown parameters of reaction networks. The accuracy increases when also moments of order higher than two are considered. In addition, the variance of the estimator decreases, when more samples are given or when higher order moments are included.
description: 18 pages, 5 figures, minor changes concerning measurement errors
Acylindrical group actions on quasi-trees
Creators: name: Balasubramanya, Sahana
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: A group G is acylindrically hyperbolic if it admits a non-elementary acylindrical action on a hyperbolic space. We prove that every acylindrically hyperbolic group G has a generating set X such that the corresponding Cayley graph is a (non-elementary) quasi-tree and the action of G on the Cayley graph is acylindrical. Our proof utilizes the notions of hyperbolically embedded subgroups and projection complexes. As a by-product, we obtain some new results about hyperbolically embedded subgroups and quasi-convex subgroups of acylindrically hyperbolic groups.
Sonnenfleckenzeichnung Nr. 26924.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 31.05.1984, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1984

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Impedance responses and size-dependent resonances in topolectrical circuits via the method of images
Creators: name: Sahin, Haydar
name: Siu, Zhuo Bin
name: Rafi-Ul-Islam, S. M.
name: Kong, Jian Feng
name: Jalil, Mansoor B. A.
name: Lee, Ching Hua
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Resonances in an electric circuit occur when capacitive and inductive components are present together. Such resonances appear in admittance measurements depending on the circuit's parameters and the driving AC frequency. In this study, we analyze the impedance characteristics of nontrivial topolectrical circuits such as one- and two-dimensional Su-Schrieffer-Heeger circuits and reveal that size-dependent anomalous impedance resonances inevitably arise in finite $LC$ circuits. Through the \textit{method of images}, we study how resonance modes in a multi-dimensional circuit array can be nontrivially modified by the reflection and interference of current from the structure and boundaries of the lattice. We derive analytic expressions for the impedance across two corner nodes of various lattice networks with homogeneous and heterogeneous circuit elements. We also derive the irregular dependency of the impedance resonance on the lattice size, and provide integral and dimensionally-reduced expressions for the impedance in three dimensions and above.
description: 24 pages, 10 figures
Sonnenfleckenzeichnung Nr. 27023.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 30.10.1984, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1984

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Sonnenfleckenzeichnung Nr. 26987.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 28.08.1984, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1984

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Hille, R./Troeger, E. (Hg), Die Einzigartigkeit Jesu Christi als Grundfrage der Theologie und missionarische Herausforderung
Creators: name: Eber, Jochen
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1821139828
description: Jahrbuch für evangelikale Theologie, V. 8 (1994): Jahrbuch für evangelikale Theologie, Band 8
Robust concurrent remote entanglement between two superconducting qubits
Creators: name: Narla, A.
name: Shankar, S.
name: Hatridge, M.
name: Leghtas, Z.
name: Sliwa, K. M.
name: Zalys-Geller, E.
name: Mundhada, S. O.
name: Pfaff, W.
name: Frunzio, L.
name: Schoelkopf, R. J.
name: Devoret, M. H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entangling two remote quantum systems which never interact directly is an essential primitive in quantum information science and forms the basis for the modular architecture of quantum computing. When protocols to generate these remote entangled pairs rely on using traveling single photon states as carriers of quantum information, they can be made robust to photon losses, unlike schemes that rely on continuous variable states. However, efficiently detecting single photons is challenging in the domain of superconducting quantum circuits because of the low energy of microwave quanta. Here, we report the realization of a robust form of concurrent remote entanglement based on a novel microwave photon detector implemented in the superconducting circuit quantum electrodynamics (cQED) platform of quantum information. Remote entangled pairs with a fidelity of $0.57\pm0.01$ are generated at $200$ Hz. Our experiment opens the way for the implementation of the modular architecture of quantum computation with superconducting qubits.
description: Main paper: 7 pages, 4 figures; Appendices: 14 pages, 9 figures
Measurement-based Characterization of Physical Layer Security for RIS-assisted Wireless Systems
Creators: name: Keşir, Samed
name: Kayraklık, Sefa
name: Hökelek, İbrahim
name: Pusane, Ali Emre
name: Basar, Ertugrul
name: Görçin, Ali
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: There have been recently many studies demonstrating that the performance of wireless communication systems can be significantly improved by a reconfigurable intelligent surface (RIS), which is an attractive technology due to its low power requirement and low complexity. This paper presents a measurement-based characterization of RISs for providing physical layer security, where the transmitter (Alice), the intended user (Bob), and the eavesdropper (Eve) are deployed in an indoor environment. Each user is equipped with a software-defined radio connected to a horn antenna. The phase shifts of reflecting elements are software controlled to collaboratively determine the amount of received signal power at the locations of Bob and Eve in such a way that the secrecy capacity is aimed to be maximized. An iterative method is utilized to configure a Greenerwave RIS prototype consisting of 76 passive reflecting elements. Computer simulation and measurement results demonstrate that an RIS can be an effective tool to significantly increase the secrecy capacity between Bob and Eve.
description: Accepted in IEEE VTC2023-Spring, Copyright IEEE
title: Localizing cortical representation of extremities with fMRI: comparative efficiency for lower and upper extremities
Creators: name: Mershina, Elena
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Comparative studies
subject: Experimental investigations
subject: MR-Functional imaging
subject: Head and neck
subject: Efficacy studies
subject: Artifacts

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Functional MRI (fMRI) is a powerful and promising method for assessment of human brain function. However, it is not a routine method of clinical diagnostics and still remains a subject of research. One of widely used clinical applications of fMRI is...
title: Emotionale Veränderung von Studierenden bedingt durch die digitale Transformation der Lehr- und Lernformate
Creators: name: Kötter, Jonas
name: Mainka, Agnes
name: Kukharenka, Natallia
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2022
Subjects: subject: Emotionale Veränderung
subject: Universität
subject: digitale Lehre
subject: Lehr- und Lernformate

description: Die weltweite Covid-19 Pandemie hatte zur Folge, dass bisherige Präsenzveranstaltungen an Universitäten ad hoc in digitale Lehr-und Lernformate transformiert werden mussten. In der vorliegenden Panelstudie werden die emotionalen Auswirkungen dieser Maßnahme aus Sicht von Studierenden im 1. und 3. Semester an der Universität Osnabrück untersucht. Mithilfe einer etablierten Methode aus der Trauerforschung wurde die emotionale Veränderung der Studierenden während des Semesters betrachtet. Zusätzlich wurden 690 Antworten identifiziert, die zu einer Veränderung der emotionalen Lage der Studierenden beigetragen haben. Diese konnten in einem induktiven Verfahren neun Dimensionen zugeordnet werden. Insgesamt kann festgehalten werden, dass die Proband:innen keine starken emotionalen Veränderungen aufweisen und dass die Lehr-und Lernformate als ein wesentlicher Einflussfaktor durch die Studierenden benannt wurde.
The spatial Rokhlin property for actions of compact quantum groups
Creators: name: Barlak, Selçuk
name: Szabó, Gábor
name: Voigt, Christian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: We introduce the spatial Rokhlin property for actions of coexact compact quantum groups on $\mathrm{C}^*$-algebras, generalizing the Rokhlin property for both actions of classical compact groups and finite quantum groups. Two key ingredients in our approach are the concept of sequentially split $*$-homomorphisms, and the use of braided tensor products instead of ordinary tensor products. We show that various structure results carry over from the classical theory to this more general setting. In particular, we show that a number of $\mathrm{C}^*$-algebraic properties relevant to the classification program pass from the underlying $\mathrm{C}^*$-algebra of a Rokhlin action to both the crossed product and the fixed point algebra. Towards establishing a classification theory, we show that Rokhlin actions exhibit a rigidity property with respect to approximate unitary equivalence. Regarding duality theory, we introduce the notion of spatial approximate representability for actions of discrete quantum groups. The spatial Rokhlin property for actions of a coexact compact quantum group is shown to be dual to spatial approximate representability for actions of its dual discrete quantum group, and vice versa.
description: 47 pages; v2 minor corrections. This version is going to appear in J. Funct. Anal
750 GeV Di-photon Excess and Strongly First-Order Electroweak Phase Transition
Creators: name: Perelstein, Maxim
name: Tsai, Yu-Dai
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A new scalar particle, coupled to photons and gluons via loops of vector-like quarks, provides a simple theoretical interpretation of the 750 GeV diphoton excess reported by the experiments at the Large Hadron Collider (LHC). In this paper, we show that this model contains a large, phenomenologically viable parameter space region in which the electroweak phase transition (EWPT) is strongly first-order, opening the possibility that electroweak baryogenesis mechanism can be realized in this context. A large coupling between the Higgs doublet and the heavy scalar, required for a strongly first-order EWPT, can arise naturally in composite Higgs models. The scenario makes robust predictions that will be tested in near-future experiments. The cross section of resonant di-Higgs production at the 13 TeV LHC is predicted to be at least 20 fb, while the Higgs cubic self-coupling is enhanced by 40% or more with respect to its Standard Model (SM) value.
description: 7 pages, 4 figures, final version published in Physical Review D
AI Art in Architecture
Creators: name: Ploennigs, Joern
name: Berger, Markus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Recent diffusion-based AI art platforms are able to create impressive images from simple text descriptions. This makes them powerful tools for concept design in any discipline that requires creativity in visual design tasks. This is also true for early stages of architectural design with multiple stages of ideation, sketching and modelling. In this paper, we investigate how applicable diffusion-based models already are to these tasks. We research the applicability of the platforms Midjourney, DALL-E 2 and StableDiffusion to a series of common use cases in architectural design to determine which are already solvable or might soon be. We also analyze how they are already being used by analyzing a data set of 40 million Midjourney queries with NLP methods to extract common usage patterns. With this insights we derived a workflow to interior and exterior design that combines the strengths of the individual platforms.
Towards Enabling 5G-NTN Satellite Communications for Manned and Unmanned Rotary Wing Aircraft
Creators: name: Leon, Vasileios
name: Christofilos, Ilias
name: Nesiadis, Athanasios
name: Paraskevas, Iosif
name: Perrela, Juan
name: Ioannopoulos, Georgios
name: Tasoulis-Nonikas, Alexandros
name: Bernou, Mathieu
name: Reading, Jacques
Publisher: name: arXiv
Year: 2024
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Emerging Technologies (cs.ET)
subject: FOS: Computer and information sciences

description: Satellite Communications (SatCom) are a backbone of worldwide development. In contrast with the past, when the GEO satellites were the only means for such connectivity, nowadays the multi-orbital connectivity is emerging, especially with the use of satellite constellations. Simultaneously, SatCom enabled the so-called In-Flight Connectivity, while with the advent of 5G-NTN, the development of this market is being accelerated. However, there are still various missing points before such a technology becomes mainstream, especially in the case of Rotary Wing Aircraft (RWA). Indeed, due to their particular characteristics, such as the low altitude flights and the blade interference, there are still open challenges. In this work, an End-to-End (E2E) analysis for the performance of SatCom under 5G-NTN for manned and unmanned RWA is performed. Various scenarios are examined, and related requirements are shown. The effects of blades and other characteristics of the RWA are established, and simulations for these cases are developed. Results along with related discussion are presented, while future directions for development are suggested. This work is part of the ESA ACROSS-AIR project.
description: Accepted for publication at the 29th IEEE CAMAD Workshop, 21-23 Oct, 2024, Athens, Greece
title: MR elastography of the renal transplant
Creators: name: Rouviere, Olivier
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Kidney
subject: Elastography
subject: Experimental

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Renal allograft failure is associated with interstitial fibrosis, which is currently assessed by biopsies. This process is prone to sampling errors and to eventual complications. We hypothesize that fibrosis stiffens the renal parenchyma, making it...
Sonnenfleckenzeichnung Nr. 27012.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 12.10.1984, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1984

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Sonnenfleckenzeichnung Nr. 27024.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 31.10.1984, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1984

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
title: Auf dem Weg zum neuen Normal - Herausforderungen für die Lehre im post-pandemischen Zeitalter
Creators: name: Thurner, Veronika
name: Böttcher, Axel
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2022
Subjects: subject: Lehrentwicklung
subject: Lehr-Lerntechnologien
subject: Didaktische Architektur
subject: Lehr-Lernprozess
subject: Hochschul-Governance

description: Die Covid-19-Pandemie hat der hochschulischen Lehre in Deutschland einen massiven Digitalisierungsschub gebracht. Dafür wurden neue, virtuelle Lehr-Lernformate entwickelt und mit Hilfe einer Vielzahl von technischen Tools umgesetzt und durchgeführt. Insgesamt hat sich dadurch der verfügbare Methodenbaukasten deutlich vergrößert und ein Raum an neuen Möglichkeiten eröffnet. Gleichzeitig wurden jedoch auch die Grenzen bzw. Herausforderungen von Online-Lehre offensichtlich. Diese gilt es nun gezielt zu thematisieren, damit sie bei der Systematisierung der während der Pandemie geschaffenen Möglichkeiten zu einem neuen Status quo des virtuell unterstützten Lehrens und Lernens angemessen berücksichtigt und adressiert werden können.
Singlet Extensions of the Standard Model at LHC Run 2: Benchmarks and Comparison with the NMSSM
Creators: name: Costa, Raul
name: Mühlleitner, Margarete
name: Sampaio, Marco O. P.
name: Santos, Rui
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The Complex singlet extension of the Standard Model (CxSM) is the simplest extension that provides scenarios for Higgs pair production with different masses. The model has two interesting phases: the dark matter phase, with a Standard Model-like Higgs boson, a new scalar and a dark matter candidate; and the broken phase, with all three neutral scalars mixing. In the latter phase Higgs decays into a pair of two different Higgs bosons are possible. In this study we analyse Higgs-to-Higgs decays in the framework of singlet extensions of the Standard Model (SM), with focus on the CxSM. After demonstrating that scenarios with large rates for such chain decays are possible we perform a comparison between the NMSSM and the CxSM. We find that, based on Higgs-to-Higgs decays, the only possibility to distinguish the two models at the LHC run 2 is through final states with two different scalars. This conclusion builds a strong case for searches for final states with two different scalars at the LHC run 2. Finally, we propose a set of benchmark points for the real and complex singlet extensions to be tested at the LHC run 2. They have been chosen such that the discovery prospects of the involved scalars are maximised and they fulfil the dark matter constraints. Furthermore, for some of the points the theory is stable up to high energy scales. For the computation of the decay widths and branching ratios we developed the Fortran code, sHDECAY, which is based on the implementation of the real and complex singlet extensions of the SM in HDECAY.
description: 49 pages, 6 figures. Improved text, updated samples and figures. Conclusions unchanged. To appear in JHEP
Final Measurement of the U235 Antineutrino Energy Spectrum with the PROSPECT-I Detector at HFIR
Creators: name: Adriamirado, M.
name: Balantekin, A. B.
name: Bass, C. D.
name: Bergeron, D. E.
name: Bernard, E. P.
name: Bowden, N. S.
name: Bryan, C. D.
name: Carr, R.
name: Classen, T.
name: Conant, A. J.
name: Deichert, G.
name: Delgado, A.
name: Diwan, M. V.
name: Dolinski, M. J.
name: Erickson, A.
name: Foust, B. T.
name: Gaison, J. K.
name: Galindo-Uribari, A.
name: Gilbert, C. E.
name: Gokhale, S.
name: Grant, C.
name: Hans, S.
name: Hansell, A. B.
name: Heeger, K. M.
name: Heffron, B.
name: Jaffe, D. E.
name: Jayakumar, S.
name: Ji, X.
name: Jones, D. C.
name: Koblanski, J.
name: Kunkle, P.
name: Kyzylova, O.
name: LaBelle, D.
name: Lane, C. E.
name: Langford, T. J.
name: LaRosa, J.
name: Littlejohn, B. R.
name: Lu, X.
name: Maricic, J.
name: Mendenhall, M. P.
name: Meyer, A. M.
name: Milincic, R.
name: Mueller, P. E.
name: Mumm, H. P.
name: Napolitano, J.
name: Neilson, R.
name: Nikkel, J. A.
name: Nour, S.
name: Gallo, J. L. Palomino
name: Pushin, D. A.
name: Qian, X.
name: Roca, C.
name: Rosero, R.
name: Searles, M.
name: Surukuchi, P. T.
name: Sutanto, F.
name: Tyra, M. A.
name: Venegas-Vargas, D.
name: Weatherly, P. B.
name: Wilhelmi, J.
name: Woolverton, A.
name: Yeh, M.
name: Zhang, C.
name: Zhang, X.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This Letter reports one of the most precise measurements to date of the antineutrino spectrum from a purely U235-fueled reactor, made with the final dataset from the PROSPECT-I detector at the High Flux Isotope Reactor. By extracting information from previously unused detector segments, this analysis effectively doubles the statistics of the previous PROSPECT measurement. The reconstructed energy spectrum is unfolded into antineutrino energy and compared with both the Huber-Mueller model and a spectrum from a commercial reactor burning multiple fuel isotopes. A local excess over the model is observed in the 5MeV to 7MeV energy region. Comparison of the PROSPECT results with those from commercial reactors provides new constraints on the origin of this excess, disfavoring at 2.2 and 3.2 standard deviations the hypotheses that antineutrinos from U235 are solely responsible and non-contributors to the excess observed at commercial reactors respectively.
description: The paper has been updated to match publication at PRL
Rancang Bangun Alat Pengukur Jarak Dan Sudut Kemiringan Digital Menggunakan Sensor Ultrasonik Dan Accelerometer Pada Konstruksi Bangunan
Creators: name: Prabowo, Bintang Sandy
name: Susanto, Erwin
name: Suratman, Fiky Y
Publisher: name: eProceedings of Engineering
Year: 2022

description: Abstrak Konstruksi bangunan merupakan suatu kegiatan membangun sarana maupun prasaranan. Alat pengukur jarak dan alat pengukur sudut kemiringan seringkali digunakan dalam kegiatan kontruksi bangunan khusus nya untuk mengukur panjang benda maupun jarak dari suatu objek, serta mengukur sudut kemiringan suatu objek. Penggunaan alat manual seringkali menghasilkan hasil ukur yang kurang akurat. Hal ini sering terjadi karena faktor manusia yang tidak teliti dalam menggunakan alat ukur manual. Pada kali ini penulis akan mengimplementasikan alat pengukur jarak dan sudut kemiringan digital menggunakan sensor ultrasonik dan accelerometer karena lebih efisiensi dalam pengukurannya. Serta melakukan pengukuran dan pengujian alat untuk melihat performansi dari alat yang telah dirancang dapat berfungsi dengan baik. Agar hasil yang diinginkan valid, maka metode yang digunakan yaitu statistik dengan melakukan pengukuran berulang, misalnya dalam menghitung nilai suatu zat dalam larutan perlu dilakukan pengukuran berulang sebanyak x kali. Dari data tersebut maka di peroleh pendekatan nilai yang terukur melalui perhitungan rata rata dari standar deviasi dan data yang diperoleh. Pengujian dilakukan sebanyak 5 kali dari masing masing jarak yang diukur, dengan menggunakan 3 objek yaitu besi, tembok, dan kerdus. Yang kemudian akan diukur rata rata dari pengukuran dan kesalahan dari pengukurannya. Kata Kunci : sensor ultrasonik, accelerometer, mikrokontroler
description: eProceedings of Engineering, Vol 9, No 5 (2022): Oktober 2022
title: Imaging of experimental bone metastases using an ultra-high field human whole body 7T MR system: initital results
Creators: name: Bäuerle, Tobias
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Bones
subject: Oncology
subject: MR physics
subject: MR
subject: MR-Functional imaging
subject: Contrast agent-intravenous
subject: Metastases

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Bone is one of the most common sites of metastasis in cancer and is of particular clinical importance in breast and prostate cancers because of its high incidence in these diseases. Early diagnosis and appropriate assessment of treatment response of...
Sonnenfleckenzeichnung Nr. 27047.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 22.12.1984, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1984

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Approximate inverse measurement channel for shallow shadows
Creators: name: Cioli, Riccardo
name: Ercolessi, Elisa
name: Ippoliti, Matteo
name: Turkeshi, Xhek
name: Piroli, Lorenzo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Classical shadows are a versatile tool to probe many-body quantum systems, consisting of a combination of randomised measurements and classical post-processing computations. In a recently introduced version of the protocol, the randomization step is performed via unitary circuits of variable depth $t$, defining the so-called shallow shadows. For sufficiently large $t$, this approach allows one to get around the use of non-local unitaries to probe global properties such as the fidelity with respect to a target state or the purity. Still, shallow shadows involve the inversion of a many-body map, the measurement channel, which requires non-trivial computations in the post-processing step, thus limiting its applicability when the number of qubits $N$ is large. In this work, we put forward a simple approximate post-processing scheme where the infinite-depth inverse channel is applied to the finite-depth classical shadows and study its performance for fidelity and purity estimation. The scheme allows for different circuit connectivity, as we illustrate for geometrically local circuits in one and two spatial dimensions and geometrically non-local circuits made of two-qubit gates. For the fidelity, we find that the resulting estimator coincides with a known linear cross-entropy, achieving an arbitrary small approximation error $δ$ at depth $t=O(\log (N/δ))$ (independent of the circuit connectivity). For the purity, we show that the estimator becomes accurate at a depth $O(N)$. In addition, at those depths, the variances of both the fidelity and purity estimators display the same scaling with $N$ as in the case of global random unitaries. We establish these bounds by analytic arguments and extensive numerical computations in several cases of interest. Our work extends the applicability of shallow shadows to large system sizes and general circuit connectivity.
description: 27 pages, 9 figures; v3: minor revision and references updated
title: Hepatic nodules showing ring-like enhancement on hepatobiliary phase of Gd-EOB-DTPA enhanced MRI can be divided into two subtypes based on blood supply: FNH and NRH-like nodules
Creators: name: Kozaka, Kazuto
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Hyperplasia / Hypertrophy
subject: Cirrhosis
subject: Diagnostic procedure
subject: MR
subject: CT-Angiography
subject: CT
subject: Abdomen
subject: Liver

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA), which is a new MR contrast agent and works both an extracellular and hepatocyte-specific contrast agent, has been proved to be highly effective in the detection and...
title: IT-REX --- A Vision for a Gamified e-Learning Platform for the First Semesters of Computer Science Courses
Creators: name: Speth, Sandro
name: Becker, Steffen
name: Breitenbücher, Uwe
name: Fuchs, Philipp
name: Meißner, Niklas
name: Riesch, Anna
name: Wetzel, Daniel
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2022
Subjects: subject: e-Learning
subject: Gamification in education
subject: Study Beginners
subject: Computer Science

description: Digital learning is becoming increasingly important, especially in situations when students cannot attend presence lectures as we experienced during the Covid-19 pandemic. However, while there are platforms that support generic learning concepts such as multiple-choice questions, we believe that the first semesters of computer science courses can benefit from tailored learning platforms that support IT-specific learning. For example, programming tasks that are automatically checked for correctness. Moreover, in times when students cannot meet each other, self-organization and motivation quickly become severe problems. Therefore, this paper presents a vision for a gamified e-Learning platform specialized for the first semesters of computer science courses.
Sonnenfleckenzeichnung Nr. 26978.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 15.08.1984, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1984

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken