cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title:   Exploring the Therapy Experiences of Latinx Individuals Working with Non-Latinx Therapists
Creators: name: Del moral, Edith
Publisher: name: University of Kentucky Libraries
Year: 2023
Subjects: subject: FOS: Other agricultural sciences
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: Latinos are the largest minoritized ethnic group in the United States. Despite having a population of 62.1 million Latinos in the United States, the representation of Latinx therapists remains low. Therefore, the chance for Latinx individuals and families to receive mental health services from a Latinx therapist is very low. This phenomenological study examines the experiences of six Latinx individuals who worked with non-Latinx therapists. The resulting themes included therapist client match, awareness, respect for boundaries, and genuineness. These themes informed by the personal stories of people who have gone through the therapeutic process will aid professionals in the field by providing firsthand perspectives of what was beneficial for this population in therapy.
description: © 2023 Edith Del Moral
On Gras conjecture for imaginary quadratic fields
Creators: name: Oukhaba, Hassan
name: Viguié, Stéphane
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11R27, 11R29 (Primary) 11G16 (Secondary)

description: In this paper we extend methods of Rubin to prove the Gras conjecture for abelian extensions of a given imaginary quadratic field k and prime numbers p which divide the number of roots of unity in k.
description: accepted for publication in Canadian Mathematical Bulletin
Tropical medians by transportation
Creators: name: Comăneci, Andrei
name: Joswig, Michael
Publisher: name: Springer Science and Business Media LLC
Year: 2023
Subjects: subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik
subject: Fermat–Weber points
subject: tropical convexity
subject: polyhedral norms
subject: consensus trees

description: Fermat–Weber points with respect to an asymmetric tropical distance function are studied. It turns out that they correspond to the optimal solutions of a transportation problem. The results are applied to obtain a new method for computing consensus trees in phylogenetics. This method has several desirable properties; e.g., it is Pareto and co-Pareto on rooted triplets.
Dimensional magnetoplasma resonance of 2D holes in (001) GaAs/AlGaAs quantum wells
Creators: name: Akimov, M. Yu.
name: Kukushkin, I. V.
name: Gubarev, S. I.
name: Tovstonog, S. V.
name: Smet, J. H.
name: Klitzing, Klaus von
name: Wegscheider, Werner
Publisher: name: Universität Regensburg
Year: 2000
Subjects: subject: 530 Physik
subject: 73.20.Dx - 73.50.Mx - 76.70.Hb

description: Dimensional magnetoplasma resonance is observed and studied in a spatially confined, two-dimensional hole system in (001) GaAs/AlGaAs single quantum wells. From the analysis of the field dependence of the magnetoplasma resonance on the diameter of the 2D system, the semiclassical cyclotron hole mass is determined. Its value is found to be equal to 0.26m 0 (m 0 is the free electron mass), which considerably exceeds the theoretically predicted value. A method is proposed for a direct determination of the concentration and mobility of 2D holes from the analysis of the magnetoplasma resonance.
Galactic-center S-Stars as a prospective test of the Einstein Equivalence Principle
Creators: name: Angelil, R.
name: Saha, P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The S-Stars in the Galactic-center region are found to be on near-perfect Keplerian orbits around presumably a supermassive black hole, with periods of 15-50 yr. Since these stars reach a few percent of light speed at pericenter, various relativistic effects are expected, and have been discussed in the literature. We argue that an elegant test of the Einstein equivalence principle should be possible with existing instruments, through spectroscopic monitoring of an S-star concentrated during the months around pericenter, supplemented with an already-adequate astrometric determination of the inclination. In essence, the spectrum of an S-star can be considered a heterogeneous ensemble of clocks in a freely-falling frame, which near pericenter is moving at relativistic speeds.
description: 4 pages, 2 figures, accepted for publication in Astrophysical Journal Letters
Polı́gonos Mágicos
Creators: name: Augusto, Danniel Dias
name: Rocha, Josimar da Silva
Publisher: name: Zenodo
Year: 2019

description: Neste trabalho definimos Polı́gonos Mágicos P (n, k) e Polı́gonos Mágicos Degenerados D(n, k) e suas principais propriedades, tais como a soma mágica e o valor que corresponde ao vértice raiz. Discutiremos também a existência de polı́gonos mágicos P (n, k) e polı́gonos mágicos degenerados D(n, k) para determinados valores de n e k.
Network-wide Freeway Traffic Estimation Using Sparse Sensor Data: A Dirichlet Graph Auto-Encoder Approach
Creators: name: Zhou, Qishen
name: Zhang, Yifan
name: Makridis, Michail A.
name: Kouvelas, Anastasios
name: Wang, Yibing
name: Hu, Simon
Publisher: name: ETH Zurich
Year: 2025
Subjects: Traffic state estimation
Freeway management and control
Inductive graph representation learning

description: arXiv
The trade effects of product market regulation in global value chains: evidence from OECD and BRICS countries between 2000 and 2015
Creators: name: Böhmecke-Schwafert, Moritz
name: Blind, Knut
Publisher: name: Springer Science and Business Media LLC
Year: 2023
Subjects: subject: 300 Sozialwissenschaften::330 Wirtschaft::330 Wirtschaft
subject: product market regulation
subject: global value chains
subject: international trade, trade in value-added
subject: PMR
subject: gravity model
subject: OECD, BRICS

description: Global Value Chains (GVC) have reshaped the landscape of international trade. The quality and intensity of regulation significantly impacts firms' competitiveness and their ability to engage in GVC. Economic literature suggests that regulation of product market competition has a detrimental effect on trade by decreasing productivity, innovation, and economic growth. This paper expands existing knowledge on this relationship by examining the influence of product market regulation (PMR) on value-added trade flows in an augmented gravity model. We constructed a data panel with trade data from 40 OECD and BRICS countries in the period from 2000 to 2015 and combined it with an extensive multi-level indicator set on PMR developed by the OECD. By disentangling the PMR indicators, we account for the heterogeneity of regulation and potential different trade effects. Overall, our evidence suggests that PMR has a negative impact on trade. Further, our results indicate that the negative impact stems largely from barriers to trade and investment. For the BRICS, our results suggest the contrary: We observed an overall positive trade effect of PMR, mainly driven by barriers to trade and investment. Our results support identifying policy areas in which regulatory reform can improve the integration in GVC and emphasize different approaches to economic policy, particularly in emerging economies such as the BRICS. Moreover, the results underline the detrimental effects of increasing protectionism and tariff hikes, a phenomenon that we increasingly observe in recent years from the world’s largest economies, such as the United States and China.
Gene clusters reflecting macrodomain structure respond to nucleoid perturbations
Creators: name: Scolari, Vittore F.
name: Bassetti, Bruno
name: Sclavi, Bianca
name: Lagomarsino, Marco Cosentino
Publisher: name: arXiv
Year: 2010
Subjects: subject: Genomics (q-bio.GN)
subject: Molecular Networks (q-bio.MN)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: Focusing on the DNA-bridging nucleoid proteins Fis and H-NS, and integrating several independent experimental and bioinformatic data sources, we investigate the links between chromosomal spatial organization and global transcriptional regulation. By means of a novel multi-scale spatial aggregation analysis, we uncover the existence of contiguous clusters of nucleoid-perturbation sensitive genes along the genome, whose expression is affected by a combination of topological DNA state and nucleoid-shaping protein occupancy. The clusters correlate well with the macrodomain structure of the genome. The most significant of them lay symmetrically at the edges of the ter macrodomain and involve all of the flagellar and chemotaxis machinery, in addition to key regulators of biofilm formation, suggesting that the regulation of the physical state of the chromosome by the nucleoid proteins plays an important role in coordinating the transcriptional response leading to the switch between a motile and a biofilm lifestyle.
description: Article: first 24 pages, 3 figures Supplementary methods: 1 page, 1 figure Supplementary results: 14 pages, 11 figures
Direct observation of hole edge channels in a two-dimensional electron gas
Creators: name: Zrenner, Artur
name: Frankenberger, J.
name: Paassen, A.
name: Efros, A. L.
name: Stopa, M.
name: Bichler, Max
name: Wegscheider, Werner
Publisher: name: Universität Regensburg
Year: 2000
Subjects: subject: Magneto-optics; Electron–hole transport; Edge channels
subject: 530 Physik
subject: 73.61.r; 73.50.Pz; 72.20.Fr; 72.20.Ht; 73.40.Hm

description: In spatially resolved magneto-optical experiments we observe hole confinement at the edge of a two-dimensional electron gas and hole transport in edge channels. In a theoretical analysis we show that a repulsive edge potential for holes at the boundary of a two-dimensional electron gas is caused by a polaron effect.
Resolving the nucleus of Centaurus A at mid-IR wavelengths
Creators: name: Burtscher, Leonard
name: Meisenheimer, Klaus
name: Jaffe, Walter
name: Tristram, Konrad R. W.
name: Röttgering, Huub J. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have observed Centaurus A with the MID-infrared Interferometric instrument (MIDI) at the Very Large Telescope Interferometer (VLTI) at resolutions of 7 - 15 mas (at 12.5 micron) and filled gaps in the (u,v) coverage in comparison to earlier measurements. We are now able to describe the nuclear emission in terms of geometric components and derive their parameters by fitting models to the interferometric data. With simple geometrical models, the best fit is achieved for an elongated disk with flat intensity profile with diameter 76 +/- 9 mas x 35 +/- 2 mas (1.41 +/- 0.17 pc x 0.65 +/- 0.03 pc) whose major axis is oriented at a position angle (PA) of 10.1 +/- 2.2 degrees east of north. A point source contributes 47 +/- 11 % of the nuclear emission at 12.5 micron. There is also evidence that neither such a uniform nor a Gaussian disk are good fits to the data. This indicates that we are resolving more complicated small-scale structure in AGNs with MIDI, as has been seen in Seyfert galaxies previously observed with MIDI. The PA and inferred inclination i = 62.6 +2.1/-2.6 degrees of the dust emission are compared with observations of gas and dust at larger scales.
description: Accepted for the PASA special issue on Centaurus A
Analytical calculation of the frame with an arbitrary number of panels
Creators: name: Kirsanov, Mikhail
Publisher: name: Санкт-Петербургский политехнический университет Петра Великого
Year: 2018
Subjects: subject: core frame
subject: deflection
subject: Maple
subject: analytical solution
subject: induction
subject: truss
subject: kinematic degeneracy
subject: стержневая рама
subject: прогиб
subject: Maple
subject: аналитическое решение
subject: индукция
subject: ферма
subject: кинематическое вырождение

description: A rod model of a statically determinate planar frame with four supports is proposed. The task is to obtain an analytical dependence of the deflection of the truss under the action of various loads on the number of panels in the crossbar and in vertical support trusses. To solve the problem, the computer mathematics system Maple is used. The system of equations of equilibrium is solved in symbolic form. It is shown that for a certain number of panels in the crossbar the determinant of the system of equations of equilibrium turns to zero, which indicates a kinematic changeability of the structure. The corresponding velocity distribution of the nodes of the truss is found. For cases of unchangeable construction, the deflection is found from the Maxwell-Mohr’s formula. A series of solutions for various numbers of panels is generalized by the method of double induction. Using the operators of the Maple system, homogeneous linear recurrence equations are derived and solved for the terms of the coefficients of the desired formula. On the graphs of the dependence of the deflection on the number of panels, significant jumps and extreme points are revealed. To evaluate the strength and stability of the construction, expressions for the forces in the individual most stretched and compressed rods in the middle of the span are found. The cases of loading the truss along the upper belt, the lower belt and the force in the middle of the span are considered. The solutions found can be used to evaluate the operability of the designed design and to optimize it.
The embodied politics of relational Indigenous dramaturgies
Creators: name: Lachance, Lindsay
Publisher: name: University of British Columbia
Year: 2018

description: There has been an expansion of Indigenous theatre across Turtle Island in the last thirty years, as well as an emergence of research devoted to its various processes and manifestations. The central contribution of this dissertation is the redefining of dramaturgy to include processes that are more than new play development practices or highly intensive research obligations, processes that are to be understood as relational and inclusive of the people, places, ancestors and other beings involved in the work. This dissertation offers a three-part Relational Indigenous dramaturgical model of land-based, placed-based and community-engaged dramaturgies. Land-based, placed-based and community-engaged dramaturgies exemplify a flourishing of Indigenous presence, actions and knowledges through embodied and collaborative theatrical processes that are not confined within Western or traditional theatre practices, but that emanate, grow and shine within the bodies and hearts of Indigenous practitioners. Relational Indigenous dramaturgies explore how the artists I have worked with are informed by individual, nation-based or community-based knowledges, but whose practices express newfound contemporary approaches and stories. I have played a sometimes central, sometimes peripheral role in the processes or events described in this dissertation, and these entry points allow me to analyze how the development processes connect to political and anticolonial theatre practices. In describing and analyzing theatrical events, gatherings and programs that I have been involved in, I offer a new approach to dramaturgy that is relational and community oriented. Throughout this dissertation, I link Indigenous dramaturgies to critical Indigenous theories of resurgence and self-recognition as elucidated primarily by Leanne Betasamosake Simpson (Michi Saagiig Anishinaabe) and Glen Coulthard (Yellowknives Dene). The political undertones of self-representation and self-determination are present in the work that I analyze, and I argue that the Indigenous dramaturgical processes and events that I have been involved in celebrate Indigenous resistance through artistic embodied thought and action.
An Asymptotic-Preserving method for highly anisotropic elliptic equations based on a micro-macro decomposition
Creators: name: Degond, Pierre
name: Lozinski, Alexei
name: Narski, Jacek
name: Negulescu, Claudia
Publisher: name: arXiv
Year: 2011
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The concern of the present work is the introduction of a very efficient Asymptotic Preserving scheme for the resolution of highly anisotropic diffusion equations. The characteristic features of this scheme are the uniform convergence with respect to the anisotropy parameter $0
WR 110: A Single Wolf-Rayet Star With Corotating Interaction Regions In Its Wind?
Creators: name: Chené, A. -N.
name: Moffat, A. F. J.
name: Cameron, C.
name: Fahed, R.
name: Gamen, R. C.
name: Lefèvre, L.
name: Rowe, J. F.
name: St-Louis, N.
name: Muntean, V.
name: De La Chevrotière, A.
name: Guenther, D. B.
name: Kuschnig, R.
name: Matthews, J. M.
name: Rucinski, S. M.
name: Sasselov, D.
name: Weiss, W. W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A 30-day contiguous photometric run with the MOST satellite on the WN5-6b star WR 110 (HD 165688) reveals a fundamental periodicity of P = 4.08 +/- 0.55 days along with a number of harmonics at periods P/n, with n ~ 2,3,4,5 and 6, and a few other possible stray periodicities and/or stochastic variability on timescales longer than about a day. Spectroscopic RV studies fail to reveal any plausible companion with a period in this range. Therefore, we conjecture that the observed light-curve cusps of amplitude ~ 0.01 mag that recur at a 4.08 day timescale may arise in the inner parts, or at the base of, a corotating interaction region (CIR) seen in emission as it rotates around with the star at constant angular velocity. The hard X-ray component seen in WR 110 could then be a result of a high velocity component of the CIR shock interacting with the ambient wind at several stellar radii. Given that most hot, luminous stars showing CIRs have two CIR arms, it is possible that either the fundamental period is 8.2 days or, more likely in the case of WR 110, there is indeed a second weaker CIR arm for P = 4.08 days, that occurs ~ two thirds of a rotation period after the main CIR. If this interpretation is correct, WR 110 therefore joins the ranks with three other single WR stars, all WN, with confirmed CIR rotation periods (WR 1, WR 6, and WR 134), albeit with WR 110 having by far the lowest amplitude photometric modulation. This illustrates the power of being able to secure intense, continuous high-precision photometry from space-based platforms such as MOST. It also opens the door to revealing low-amplitude photometric variations in other WN stars, where previous attempts have failed. If all WN stars have CIRs at some level, this could be important for revealing sources of magnetism or pulsation in addition to rotation periods.
description: 25 pages, 8 figures, 2 tables, accepted in ApJ
Charge ratchet from spin flip: space-time symmetry paradox
Creators: name: Smirnov, Sergey
name: Bercioux, Dario
name: Grifoni, Milena
name: Richter, Klaus
Publisher: name: Universität Regensburg
Year: 2009
Subjects: subject: charge ratchet, spin-orbit interactions, quantum dissipation, space-time symmetry
subject: 530 Physik
subject: 72.25.Dc
subject: 03.65.Yz
subject: 73.23.-b
subject: 05.60.Gg

description: Traditionally the charge ratchet effect is considered as a consequence of either the spatial symmetry breaking engineered by asymmetric periodic potentials, or time asymmetry of the driving fields. Here we demonstrate that electrically and magnetically driven quantum dissipative systems with spin-orbit interactions represent an exception from this standard idea. In contrast to the so far well established belief, a charge ratchet effect appears when both the periodic potential and driving are symmetric. We show that the source of this paradoxical charge ratchet mechanism is the coexistence of quantum dissipation with the spin flip processes induced by spin-orbit interactions.
Supplementary document for Wave propagation dynamics inside a complex scattering medium by the temporal control of backscattered waves - 6333270.pdf
Creators: name: Lee, Ye-Ryoung
name: Choi, Wonjun
name: Jeong, Seungwon
name: Kang, Sungsam
name: Kim, Dong-Young
name: Choi, Wonshik
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: subject: 20599 Optical Physics not elsewhere classified
subject: FOS: Physical sciences

description: Supplementary Information
Scaling approach for the time-dependent Kondo model
Creators: name: Tomaras, C.
name: Kehrein, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a new nonperturbative method to deal with the time-dependent quantum many-body problem, which is an extension of Wegner's flow equations to time-dependent Hamiltonians. The formalism provides a scaling procedure for the set of time-dependent interaction constants. We apply these ideas to a Kondo model with a ferromagnetic exchange coupling switched on over a time scale $τ$. We show that the asymptotic expectation value of the impurity spin interpolates continuously between its quenched and adiabatic value.
Direct Observation of Hole Edge Channels in a Two Dimensional Electron Gas
Creators: name: Paassen, A.
name: Zrenner, Artur
name: Efros, A. L.
name: Stopa, M.
name: Frankenberger, J.
name: Bichler, Max
name: Wegscheider, Werner
Publisher: name: Universität Regensburg
Year: 1999
Subjects: subject: 530 Physik
subject: 73.50.Pz, 72.20.Fr, 72.20.Ht, 73.40.Hm

description: We report the direct optical observation of confinement and transport of minority holes in a two dimensional electron gas. In spatially resolved magneto-optical experiments we observe hole confinement at the edge of a two dimensional electron gas and hole transport in edge channels. In a theoretical analysis we show that a repulsive edge potential for holes at the boundary of a two dimensional electron gas is caused by a polaron effect.
Luminosity Functions of Local Infrared Galaxies with AKARI: Implications to the Cosmic Star Formation History and AGN Evolution
Creators: name: Goto, Tomotsugu
name: Arnouts, Stephane
name: Inami, Hanae
name: Matsuhara, Hideo
name: Pearson, Chris
name: Takeuchi, Tsutomu T.
name: Floc'h, Emeric Le
name: Takagi, Toshinobu
name: Wada, Takehiko
name: Nakagawa, Takao
name: Oyabu, Shinki
name: Ishihara, Daisuke
name: Lee, Hyung Mok
name: Jeong, Woong-Seob
name: Yamauchi, Chisato
name: Serjeant, Stephen
name: Sedgwick, Chris
name: Treister, Ezequiel
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Infrared (IR) luminosity is fundamental to understanding the cosmic star formation history and AGN evolution. The AKARI IR space telescope performed all sky survey in 6 IR bands (9, 18, 65, 90, 140, and 160um) with 3-10 times better sensitivity than IRAS, covering the crucial far-IR wavelengths across the peak of the dust emission. Combined with a better spatial resolution, AKARI can much more precisely measure the total infrared luminosity (L_TIR) of individual galaxies, and thus, the total infrared luminosity density in the local Universe. By fitting IR SED models, we have re-measured L_TIR of the IRAS Revised Bright Galaxy Sample. We present mid-IR monochromatic luminosity to L_TIR conversions for Spitzer 8,24um, AKARI 9,18um, IRAS 12um, WISE 12,22um, and ISO 15um filters, with scatter ranging 13-44%. The resulting AKARI IR luminosity function (LF) agrees well with that from the IRAS. We integrate the LF weighted by L_TIR to obtain a cosmic IR luminosity density of Omega_TIR= (8.5^{+1.5}_{-2.3})x 10^7 L Mpc^-3, of which 7+-1% is produced by LIRGs, and only 0.4+-0.1% is from ULIRGs in the local Universe. Once IR contributions from AGN and star-forming galaxies (SFG) are separated, SFG IR LF shows a steep decline at the bright-end. Compared with high-redshift results from the AKARI NEP deep survey, these data show a strong evolution of Omega_TIRSF propto (1+z)^4.0+-0.5, and Omega_TIRAGN propto (1+z)^4.4+-0.4. For Omega_TIRAGN, the ULIRG contribution exceeds that from LIRG already by z~1. A rapid evolution in both Omega_TIRAGN and Omega_TIRSFG suggests the correlation between star formation and black hole accretion rate continues up to higher redshifts. We compare the evolution of Omega_TIRAGN to that of X-ray luminosity density. The Omega_TIRAGN/Omega_X-rayAGN ratio shows a possible increase at z>1, suggesting an increase of obscured AGN at z>1.
description: Accepted for publication in MNRAS
Report on the Evaluation of Methods for Improving Comparability of Cross-Omics Data from Different Cohorts
Creators: name: Niehues, Anna
name: 't Hoen, Peter-Bram
name: de Visser, Casper
name: Vrbkova, Jana
name: Najdekr, Lukáš
name: Toth, Reka
name: Fernandez, Val
Publisher: name: Zenodo
Year: 2023
Subjects: multiomics
cross-omics
multiomics data
data comparability
data integration
reproducibility
FAIR data
standardized quality assessment
best practice
data workflow
confounding factors
multiomics integration
unsupervised analysis
supervised analysis
biological interpretation
reference methylomes
batch correction methods
computational workflow
methylation age

description: The key scientific output of the EATRIS-Plus project is to develop a Multi-omic Toolbox available for researchers in order to have a better understanding of the molecular profiles in personalised medicine.
Within work packages 1, 2, and 3, we implement practices based on the FAIR (Findability, Accessibility, Interoperability, and Reusability) principles to ensure reproducibility of our work and to make the multi-omics cohort data reusable for future translational research. The aim of this deliverable (D2.2) is to describe methods developed and applied to the Czech multi-omics cohort 1 that can improve comparability of data when integrating omics data from different sources. 

Integration of omics data from different sources can be challenging when data and data processing steps are not sufficiently annotated, or sources of biological and technical variation are unknown. The Czech multi-omics demonstrator cohort serves as a demonstrator for the development and application of computational workflows for omics preprocessing and integrative analyses.
Towards pp -> VVjj at NLO QCD: Bosonic contributions to triple vector boson production plus jet
Creators: name: Campanario, Francisco
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work, some of the NLO QCD corrections for pp -> VVjj + X are presented. A program in Mathematica based on the structure of FeynCalc which automatically simplifies a set of amplitudes up to the hexagon level of rank 5 has been created for this purpose. We focus on two different topologies. The first involves all the virtual contributions needed for quadruple electroweak vector boson production, i.e. pp -> VVVV + X. In the second, the remaining "bosonic" corrections to electroweak triple vector boson production with an additional jet (pp -> VVV j + X) are computed. We show the factorization formula of the infrared divergences of the bosonic contributions for VVVV and VVVj production with V=(W,Z,gamma). Stability issues associated with the evaluation of the hexagons up to rank 5 are studied. The CPU time of the FORTRAN subroutines rounds the 2 milliseconds and seems to be competitive with other more sophisticated methods. Additionally, in Appendix A the master equations to obtain the tensor coefficients up to the hexagon level in the external momenta convention are presented including the ones needed for small Gram determinants.
description: 48 pages,16 figures
Replication package including data and code for the paper "Subprocess Recommendation in Process Modeling: Are Large Language Models the Answer?"
Creators: name: Saeedi Nikoo, Mahdi
name: Kochanthara, Sangeeth
name: Babur, Önder
name: van den Brand, Mark
Publisher: name: Zenodo
Year: 2025
Subjects: business process model
process model similarity
subprocess
recommender system

description: Replication package including data and code for the paper "Subprocess Recommendation in Process Modeling: Are Large Language Models the Answer?"
Finite element approximation of a phase field model for surface diffusion of voids in a stressed solid
Creators: name: Barrett, John W.
name: Garcke, Harald
name: Nürnberg, Robert
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: degenerate Cahn-Hilliard equation; elasticity; convergence; nonlinear degenerate parabolic system
subject: 510 Mathematik
subject: Primary 65M60, 65M12, 65M50, 35K55, 35K65, 35K35, 82C26, 74F15

description: We consider a fully practical finite element approximation of the degenerate Cahn-Hilliard equation with elasticity: Find the conserved order parameter, $\theta(x, t)\in [-1, 1]$, and the displacement field, $\underline u(x, t)\in \Bbb R^2$, such that $$\gamma\frac{\partial\theta}{\partial t}=\nabla\cdot (b(\theta)\nabla [-\gamma\Delta\theta + \gamma^{-1}\Psi'(\theta) + \tfrac 12 c' (\theta){\cal C}\underline{\underline{\cal E}}(\underline u) : \underline{\underline{\cal E}}(\underline u)] ),\quad \nabla\cdot (c(\theta){\cal C} \underline{\underline{\cal E}}(\underline{u})) = \underline 0,$$ subject to an initial condition $\theta^0(\cdot)\in [-1,1]$ on $\theta$ and boundary conditions on both equations. Here $\gamma\in\Bbb R_{>0}$ is the interfacial parameter, $\Psi$ is a nonsmooth double well potential, $ \underline{\underline{\cal E}}$ is the symmetric strain tensor, $\cal C$ is the possibly anisotropic elasticity tensor, $c(s) := c_0+ \frac 12 (1- c_0) (1+s)$ with $c_0(\gamma)\in\Bbb R_{>0}$ and $b(s) := 1 s^2$ is the degenerate diffusion mobility. In addition to showing stability bounds for our approximation, we prove convergence, and hence existence of a solution to this nonlinear degenerate parabolic system in two space dimensions. Finally, some numerical experiments are presented.
Negative differential resistance of a 2D electron gas in a 1D miniband
Creators: name: Deutschmann, R. A.
name: Wegscheider, Werner
name: Rother, Martin
name: Bichler, Max
name: Abstreiter, Gerhard
Publisher: name: Universität Regensburg
Year: 2000
Subjects: subject: Superlattice; Miniband transport; Negative differential resistance; Bloch oscillations
subject: 530 Physik

description: We experimentally investigate the miniband transport in a novel kind of superlattice fabricated by the “cleaved edge overgrowth” method. The structure represents a field effect transistor, where the channel consists of an MBE-grown superlattice perpendicular to the current flow. By means of the gate the Fermi energy can be adjusted between the bottom of the first miniband and into the minigap. We observe pronounced negative differential resistance at electric fields across the superlattice as low as 160 V/cm. From magnetotransport measurements a relation between the applied gate voltage and the position of the Fermi energy in the artificial band structure is established. Electron mobility depending on the Fermi energy is deduced separately from Shubnikov–de Haas oscillations, from the voltage at the peak current and from the low-field resistance.
Quark-diquark Systematics of Baryons: Spectral Integral Equations for Systems Composed by Light Quarks
Creators: name: Anisovich, A. V.
name: Anisovich, V. V.
name: Matveev, M. A.
name: Nikonov, V. A.
name: Sarantsev, A. V.
name: Vulfs, T. O.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: For baryons composed by the light quarks ($q=u,d$) we write spectral integral equation using the notion of two diquarks: (i) axial--vector state, $D^{1}_{1}$, with the spin $S_D=1$ and isospin $I_D=1$ and (ii) scalar one, $D^{0}_{0}$, with the spin $S_D=0$ and isospin $I_D=0$. We present spectral integral equations for the $qD^{0}_{0}$ and $qD^{1}_{1}$ states taking into account quark--diquark confinement interaction.
description: 13 pages, 2 figures
Direct observation of the intersubband Bernstein modes: Many-body coupling with spin- and charge-density excitations
Creators: name: Kirpichev, V. E.
name: Kulik, L. V.
name: Kukushkin, I. V.
name: Klitzing, Klaus von
name: Eberl, Karl
name: Wegscheider, Werner
Publisher: name: Universität Regensburg
Year: 1999
Subjects: subject: 530 Physik
subject: 73.40.Hm, 73.20.Dx

description: The spectrum of collective intersubband magneto excitations in a quasi-two-dimensional electron system confined in a single quantum well has been studied by inelastic light scattering spectroscopy. Intersubband Bernstein modes with a change of the Landau level index up to three were observed in a perpendicular magnetic field. It is demonstrated that Bernstein modes couple with intersubband charge and spin density excitations through many-body Coulomb interaction, and the coupling strength is governed by the in-plane momentum. Detailed measurements of the coupling strength dispersion were performed and compared with theoretical simulations.
What densities can be effectively probed in quasifree single-nucleon knockout reactions?
Creators: name: Ryckebusch, Jan
name: Cosyn, Wim
name: Vanhalst, Maarten
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We address the issue whether quasifree single-nucleon knockout measurements carry sufficient information about the nuclear interior. To this end, we present comparisons of the reaction probability densities for $A(e,e'p)$ and $A(p,2p)$ in quasifree kinematics for the target nuclei $^{4}$He, $^{12}$C, $^{56}$Fe, and $^{208}$Pb. We adopt a comprehensive framework based on the impulse approximation and on a relativized extension of Glauber multiple-scattering reaction theory in which the medium effects related to short-range correlations (SRC) are implemented. It is demonstrated that SRC weaken the effect of attenuation. For light target nuclei, both the quasifree $(p,2p)$ and $(e,e'p)$ can probe average densities of the same order as nuclear saturation density $ρ_{0}$. For heavy nuclei like $^{208}$Pb, the probed average densities are smaller than $0.1ρ_{0}$ and the $(e,e'p)$ reaction is far more efficient in probing the bulk regions than $(p,2p)$.
description: 11 pages, 12 figures
Theory and algorithmic applications of the proximal mapping and Moreau envelope
Creators: name: Planiden, Chayne Daniel
Publisher: name: University of British Columbia
Year: 2018

description: The Moreau envelope and the proximal mapping have been objects of great interest for optimizers since their conception more than half a century ago. They provide us with many desirable properties; for instance, the Moreau envelope of a convex function is smooth (differentiable) while the function may not be, and the envelope maintains the same minimum value and the same set of minimizers as the function. This is a great advantage to have when the objective is to minimize the function, because standard Calculus methods can then be applied to minimize the smooth envelope. From a computational standpoint, the proximal mapping has given rise to many efficient minimization algorithms, such as the proximal point method and proximal bundle methods. Derivative-free optimization methods continue to grow in importance and popularity. The term ‘derivative-free’ refers to the fact that for the function to be minimized, (sub)gradient information is either unavailable or inconvenient to use, thus necessitating an algorithm that does not require subgradients. Such algorithms rely on constructs such as the simplex gradient to obtain good-quality approximations of subgradients and use the approximations in derivative-free versions of the proximal routines. The present work is divided into three major parts. Part I provides a history of the Moreau envelope, with the goal of illustrating its usefulness and some of its successes over the past few decades. Part II contains new theoretical results that involve the Moreau envelope and the proximal mapping on many topics, including prox-boundedness, convex functions with unique and/or strong minimizers, Baire category and epiconvergence. Part III is the algorithmic section, where a proximal bundle method is converted to derivative-free format. Using this result, a particular minimization algorithm for convex finite-max functions called the VU-algorithm is presented and also converted to derivative-free. The new method is proved convergent and numerical results are included.
Empathiefähigkeit von Studierenden der Humanmedizin Rostock
Creators: name: Schrötter, Susanne
Publisher: name: Universität Rostock
Year: 2020
Subjects: subject: 150 Psychology

description: Mittels Saarbrücker Persönlichkeitsfragebogen (SPF) wurden Medizinstudierende der Universitätsmedizin Rostock (1. Semester: N =192 / 9. Semester: N = 221) befragt und die Daten deskriptiv, inferenzstatistisch und clusteranalytisch untersucht. Weniger als 50% der Befragten konnten als empathisch eingestuft werden. Drei Empathie-Profile mit deutlichen Unterschieden in der Semesterverteilung wurden identifiziert: 1. reflektierte, unbelastende Empathie 2. unreflektierte, mitleidende Empathie und 3. Distanzierung / Vermeidung.
Optical and transport properties of low-dimensional structures fabricated by cleaved edge overgrowth
Creators: name: Wegscheider, Werner
name: Rother, Martin
name: Schedelbeck, Gert
name: Bichler, Max
name: Abstreiter, Gerhard
Publisher: name: Universität Regensburg
Year: 1999
Subjects: subject: 530 Physik
subject: 78.45.+h; 73.20.Dx; 78.55.Cr

description: Recent progress in the fabrication of GaAs/AlGaAs low-dimensional structures by cleaved edge overgrowth (CEO) — a molecular beam growth technique that involves one or two regrowth steps on the sidewalls of an in situ cleaved layer structure — is reviewed. Ballistic electron transport in modulation-doped quantum wires prepared in this way is characterized by pronounced quantization of the conductance in integer multiples < 2e2/h. A magnetic field oriented perpendicular to the quantum wires is found to increase the quantized conductance values. While for a 400 Å wide channel the canonical values of n × 2e2/h are almost reached at a magnetic field strength of 4 T the corresponding conductance rise in a 250 Å wide channel is much slower. In addition, the magnetic field dependence of the positions of the conductance steps as a function of an applied gate voltage which controls the electron density is distinctly different for wires of 400 and 250 Å width. The optical properties of atomically precise quantum dots which originate at the right angle intersection of three quantum wells are characterized by narrow “atom-like” emission lines. Two different types of quantum dot structures have been investigated using microscopic photoluminescence spectroscopy: linear arrays of weakly coupled dots, i.e. an one-dimensional quantum dot superlattice and single as well as paired quantum dots. The latter allow the assembly of “artificial molecules” out of almost identical quantum dots which can be considered as “artificial atoms” as the dot-to-dot distance is varied.
Plasmon-phonon coupling in graphene
Creators: name: Hwang, E. H.
name: Sensarma, Rajdeep
name: Sarma, S. Das
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Collective excitations of coupled electron-phonon systems are calculated for both monolayer and bilayer graphene, taking into account the non-perturbative Coulomb coupling between electronic excitations in graphene and the substrate longitudinal optical phonon modes. We find that the plasmon-phonon coupling in monolayer graphene is strong at all densities, but in bilayer graphene the coupling is significant only at high densities satisfying the resonant condition $ω_{pl} \approx ω_{ph}$. The difference arises from the peculiar screening properties associated with chirality of graphene. Plasmon-phonon coupling explains the measured quasi-linear plasmon dispersion in the long wavelength limit, thus resolving a puzzle in the experimental observations.
description: 4 pages, 5 figures
Report on the Evaluation of Methods for Improving Comparability of Cross-Omics Data from Different Cohorts
Creators: name: Niehues, Anna
name: 't Hoen, Peter-Bram
name: de Visser, Casper
name: Vrbkova, Jana
name: Najdekr, Lukáš
name: Toth, Reka
name: Fernandez, Val
Publisher: name: Zenodo
Year: 2023
Subjects: multiomics
cross-omics
multiomics data
data comparability
data integration
reproducibility
FAIR data
standardized quality assessment
best practice
data workflow
confounding factors
multiomics integration
unsupervised analysis
supervised analysis
biological interpretation
reference methylomes
batch correction methods
computational workflow
methylation age

description: The key scientific output of the EATRIS-Plus project is to develop a Multi-omic Toolbox available for researchers in order to have a better understanding of the molecular profiles in personalised medicine.
 Within work packages 1, 2, and 3, we implement practices based on the FAIR (Findability, Accessibility, Interoperability, and Reusability) principles to ensure reproducibility of our work and to make the multi-omics cohort data reusable for future translational research. The aim of this deliverable (D2.2) is to describe methods developed and applied to the Czech multi-omics cohort 1 that can improve comparability of data when integrating omics data from different sources. Integration of omics data from different sources can be challenging when data and data processing steps are not sufficiently annotated, or sources of biological and technical variation are unknown. The Czech multi-omics demonstrator cohort serves as a demonstrator for the development and application of computational workflows for omics preprocessing and integrative analyses.
Ballistic magnetotransport in a semiconductor microjunction with broken symmetry
Creators: name: Song, A. M.
name: Lorke, A.
name: Kotthaus, J. P.
name: Wegscheider, Werner
name: Bichler, Max
Publisher: name: Universität Regensburg
Year: 1999
Subjects: subject: magnetotransport ballistic transport symmetry-breaking nonlinear effect
subject: 530 Physik

description: The linear and nonlinear magnetotransport response of a ballistic semiconductor cross junction with an embedded, symmetry-breaking scatterer is investigated. As a result of the broken symmetry, the so-called ‘bend resistance’ is no longer symmetric in the magnetic field. The experimental curve also exhibits a pronounced peak structure. In the nonlinear transport regime, both the magnitude and the position of the magnetoresistance peaks are drastically influenced by the dc current bias. We also observe new magnetoresistance peaks evolving at high lead currents in some experimental configurations.
Guião de utilização - Navios Mercantes Portugueses
Creators: name: Pequeno, Valéria Magalhães
name: De Oliveira Junior, Antonio Filgueira
name: Laercio Cruvinel
Publisher: name: Zenodo
Year: 2023
Subjects: navio mercante, navio de passageiro, navio-tanque, navio de carga, rebocadores

description: Guião de utilização para a aplicação web "Navios Mercantes Portugueses"
Zeitsynchronisation in drahtgebundenen Rechnernetzen
Creators: name: Puttnies, Henning
Publisher: name: Universität Rostock
Year: 2021
Subjects: subject: 621.3 Electrical Engineering, Electronics

description: Ausgehend von einer Analyse des Standes der Technik werden neuartige Verfahren für die Zeitsynchronisation in drahtgebundenen Netzwerken vorgestellt. Unter anderem wird, zum ersten Mal im Bereich der Zeitsynchronisation, eine Kombination aus Linearer Optimierung und Broadcast-Nachrichten vorgestellt, was eine Verbindung der jeweiligen Genauigkeits- und Skalierbarkeitsvorteile ermöglicht. Weiterhin wird, ebenfalls zum ersten Mal im Bereich der Zeitsynchronisation, eine Kombination aus Linearer Optimierung und Temperaturkompensation vorgestellt.
Simultaneous X-ray and radio observations of Young Stellar Objects in NGC 1333 and IC 348
Creators: name: Forbrich, Jan
name: Osten, Rachel A.
name: Wolk, Scott J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Young Stellar Objects (YSOs) and in particular protostars are known to show a variety of high-energy processes. Observations in the X-ray and centimetric radio wavelength ranges are thought to constrain some of these processes, e.g., coronal-type magnetic activity. There is a well-known empirical correlation of radio and X-ray luminosities in active stars, the so-called Guedel-Benz relation. Previous evidence whether YSOs are compatible with this relation remains inconclusive for the earliest evolutionary stages. The main difficulty is that due to the extreme variability of these sources, simultaneous observations are essential. Until now, only few YSOs and only a handful of protostars have been observed simultaneously in the X-ray and radio range. To expand the sample, we have obtained such observations of two young clusters rich in protostars, NGC 1333 and IC 348. While the absolute sensitivity is lower for these regions than for more nearby clusters like CrA, we find that even in deep continuum observations carried out with the NRAO Very Large Array, the radio detection fraction for protostars in these clusters is much lower than the X-ray detection fraction. Very few YSOs are detected in both bands, and we find the radio and X-ray populations among YSOs to be largely distinct. We combine these new results with previous simultaneous Chandra and VLA observations of star-forming regions and find that YSOs with detections in both bands appear to be offset toward higher radio luminosities for given X-ray luminosities when compared to the Guedel-Benz relation, although even in this sensitive dataset most sources are too weak for the radio detections to provide information on the emission processes. The considerably improved sensitivity of the Expanded Very Large Array will provide a better census of the YSO radio population as well as better constraints on the emission mechanisms.
description: Accepted for publication in ApJ
Extended time-travelling objects in Misner space
Creators: name: Levanony, Dana
name: Ori, Amos
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Misner space is a two-dimensional (2D) locally-flat spacetime which elegantly demonstrates the emergence of closed timelike curves from causally well-behaved initial conditions. Here we explore the motion of rigid extended objects in this time-machine spacetime. This kind of 2D time-travel is found to be risky due to inevitable self-collisions (i.e. collisions of the object with itself). However, in a straightforward four-dimensional generalization of Misner space (a physically more relevant spacetime obviously), we find a wide range of "safe" time-travel orbits free of any self-collisions.
description: accepted for publication in Physical Review D
Breakdown of Shubnikov–de Haas oscillations in a short-period 1D lateral superlattice
Creators: name: Deutschmann, R. A.
name: Lorke, A.
name: Wegscheider, Werner
name: Bichler, Max
name: Abstreiter, Gerhard
Publisher: name: Universität Regensburg
Year: 2000
Subjects: subject: Superlattice; Magnetic breakdown
subject: 530 Physik
subject: 73.20.Dx; 73.40.Hm; 73.50.Jt; 73.61.Ey

description: Magnetic breakdown is observed in a two-dimensional electron system subject to a strong, atomically precise, one-dimensional potential with a period of 15 nm. The transition from closed to open electron orbits is studied in magnetotransport experiments by continuously changing the Fermi energy of the superlattice within and above the first miniband. Shubnikov–de Haas oscillations quench for Fermi energies close to the miniband gap but recover at higher magnetic fields. The density of states is clearly altered from a conventional 2D system which manifests itself in aperiodic magnetooscillations when sweeping the Fermi energy at fixed magnetic fields.