cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Towards an Experimental Test of Gravity-induced Quantum State Reduction
Creators: name: van Wezel, Jasper
name: Oosterkamp, Tjerk
name: Zaanen, Jan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: According to the hypothesis of Penrose and Diosi, quantum state reduction is a manifestation of the incompatibilty of general relativity and the unitary time evolution of quantum physics. Dimensional analysis suggests that Schrodinger cat type states should collapse on measurable time scales when masses and lengths of the order of bacterial scales are involved. We analyze this hypothesis in the context of modern developments in condensed matter and cold atoms physics, aimed at realizing macroscopic quantum states. We first consider 'micromechanical' quantum states, analyzing the capacity of an atomic force microscopy based single spin detector to measure the gravitational state reduction, but we conclude that it seems impossible to suppress environmental decoherence to the required degree. We subsequently discuss 'split' cold atom condensates to find out that these are at present lacking the required mass scale by many orders of magnitude. We then extent Penrose's analysis to superpositions of mass current carrying states, and we apply this to the flux quantum bits realized in superconducting circuits. We find that the flux qubits approach the scale where gravitational state reduction should become measurable, but bridging the few remaining orders of magnitude appears to be very difficult with present day technology.
description: 12 pages, 7 figures
Exhaustive enumeration unveils clustering and freezing in random 3-SAT
Creators: name: Ardelius, John
name: Zdeborová, Lenka
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Computational Complexity (cs.CC)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We study geometrical properties of the complete set of solutions of the random 3-satisfiability problem. We show that even for moderate system sizes the number of clusters corresponds surprisingly well with the theoretic asymptotic prediction. We locate the freezing transition in the space of solutions which has been conjectured to be relevant in explaining the onset of computational hardness in random constraint satisfaction problems.
description: 4 pages, 3 figures
JPGNet: Joint Predictive Filtering and Generative Network for Image Inpainting
Creators: name: Guo, Qing
name: Li, Xiaoguang
name: Juefei-Xu, Felix
name: Yu, Hongkai
name: Liu, Yang
name: wang, Song
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Image inpainting aims to restore the missing regions of corrupted images and make the recovery result identical to the originally complete image, which is different from the common generative task emphasizing the naturalness or realism of generated images. Nevertheless, existing works usually regard it as a pure generation problem and employ cutting-edge deep generative techniques to address it. The generative networks can fill the main missing parts with realistic contents but usually distort the local structures or introduce obvious artifacts. In this paper, for the first time, we formulate image inpainting as a mix of two problems, predictive filtering and deep generation. Predictive filtering is good at preserving local structures and removing artifacts but falls short to complete the large missing regions. The deep generative network can fill the numerous missing pixels based on the understanding of the whole scene but hardly restores the details identical to the original ones. To make use of their respective advantages, we propose the joint predictive filtering and generative network (JPGNet) that contains three branches: predictive filtering & uncertainty network (PFUNet), deep generative network, and uncertainty-aware fusion network (UAFNet). The PFUNet can adaptively predict pixel-wise kernels for filtering-based inpainting according to the input image and output an uncertainty map. This map indicates the pixels should be processed by filtering or generative networks, which is further fed to the UAFNet for a smart combination between filtering and generative results. Note that, our method as a novel inpainting framework can benefit any existing generation-based methods. We validate our method on three public datasets, Dunhuang, Places2, and CelebA, and demonstrate that our method can enhance three state-of-the-art generative methods significantly with slightly extra time costs.
description: This work has been accepted to ACM-MM 2021
A forward-backward splitting algorithm for the minimization of non-smooth convex functionals in Banach space
Creators: name: Bredies, Kristian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 49M27; 46B20; 65J22

description: We consider the task of computing an approximate minimizer of the sum of a smooth and non-smooth convex functional, respectively, in Banach space. Motivated by the classical forward-backward splitting method for the subgradients in Hilbert space, we propose a generalization which involves the iterative solution of simpler subproblems. Descent and convergence properties of this new algorithm are studied. Furthermore, the results are applied to the minimization of Tikhonov-functionals associated with linear inverse problems and semi-norm penalization in Banach spaces. With the help of Bregman-Taylor-distance estimates, rates of convergence for the forward-backward splitting procedure are obtained. Examples which demonstrate the applicability are given, in particular, a generalization of the iterative soft-thresholding method by Daubechies, Defrise and De Mol to Banach spaces as well as total-variation based image restoration in higher dimensions are presented.
Nemmersdorf 1944 – ein bisher unbekanntes zeitnahes Zeugnis
Creators: name: Fisch, Bernhard
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2007

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 56 Nr. 1 (2007)
Subduction beneath the Queen Charlotte Islands? : the results of a seismic refraction survey
Creators: name: Mackie, David
Publisher: name: University of British Columbia
Year: 2010

description: The Queen Charlotte transform fault zone, which lies immediately east of the Queen Charlotte Islands, marks the boundary between the oceanic Pacific and the continental North American plates. Relative plate motions suggest that oblique underthrusting of the Pacific plate beneath North America may be presently occurring along this transform fault. To investigate this plate boundary and the implications of oblique subduction on crustal structure beneath the region, an onshore-offshore seismic refraction survey was conducted in 1983. The survey was designed to sample the crust beneath the Queen Charlotte Islands and across Hecate Strait to the mainland of British Columbia. Six ocean bottom seismographs and 11 land based stations were deployed along a 200 km line extending from 20 km west of the Queen Charlotte Islands to the mainland. Thirteen 540 kg and twenty 60 kg explosive charges were detonated along a 110 km long east-west line in the ocean to the west of the receivers. The multiple shots recorded on multiple receivers, all along the same line, effectively reverses the profile over some of its length. The objective of this study is to provide a model of the deep crustal structure beneath the fault zone, the Queen Charlotte Islands, and Hecate Strait. An exemplary subset of the extensive data set was selected to meet this objective. Beneath the deep ocean the Moho dips at about 2° to the east. At the Queen Charlotte terrace, a 25 km wide zone immediately west of the active Queen Charlotte fault, the dip of the Moho increases to about 5°. The crust is about 12 km thick at the terrace and 18 km thick at the eastern edge of the Queen Charlotte Islands, and in excess of 30 km thick at the mainland. The terrace unit itself is divided into two units - an upper unit with low velocity (4.1 km/s) and high gradient (0.3 km/s/km) and a lower unit with a high velocity (6.5 km/s) and a low gradient (0.05 km/s/km). This model, while not definitive, supports the interpretation of oblique shallow underthrusting of the Pacific plate beneath the Queen Charlotte Islands. The upper terrace unit could represent a sedimentary accretionary wedge and the lower terrace unit - the subducting slab. A model in which compression across the Queen Charlotte transform fault zone is taken up by deformation of the Queen Charlotte Islands in the form of crustal shortening and thickening is not compatible with the thin crust beneath the islands and Hecate Strait.
Imants Lancmanis, Libau. Eine baltische Hafenstadt zwischen Barock und Klassizismus
Creators: name: Grosmane, Elita
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2007

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 56 Nr. 4 (2007)
Multipolar expansion of the electrostatic interaction between charged colloids at interfaces
Creators: name: Dominguez, A.
name: Frydel, D.
name: Oettel, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The general form of the electrostatic potential around an arbitrarily charged colloid at an interface between a dielectric and a screening phase (such as air and water, respectively) is analyzed in terms of a multipole expansion. The leading term is isotropic in the interfacial plane and varies with $d^{-3}$ where $d$ is the in--plane distance from the colloid. The electrostatic interaction potential between two arbitrarily charged colloids is likewise isotropic and $\propto d^{-3}$, corresponding to the dipole--dipole interaction first found for point charges at water interfaces. Anisotropic interaction terms arise only for higher powers $d^{-n}$ with $n \ge 4$.
description: 6 pages, mathematical details added
Congruences between modular forms given by the divided beta family in homotopy theory
Creators: name: Behrens, Mark
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55Q45 (Primary); 55Q51, 55N34, 11F33 (Secondary)

description: We characterize the 2-line of the p-local Adams-Novikov spectral sequence in terms of modular forms satisfying a certain explicit congruence condition for primes p > 3. We give a similar characterization of the 1-line, reinterpreting some earlier work of A. Baker and G. Laures. These results are then used to deduce that, for l a prime which generates the p-adic units, the spectrum Q(l) detects the alpha and beta families in the stable stems.
description: 30 pages, submitted. Revision - repaired an integrality error in the use of Eisenstein series
Inca irroratus Chevrolat 1833
Creators: name: Sousa, Rafael
name: Seidel, Matthias
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cetoniidae
Inca
Inca irroratus

description: Inca irroratus species group
Diagnosis
The species of the irroratus group can be distinguished from other species groups of Inca by: outer dorsal margin of clypeal horns of males with an acute or rounded tooth (this tooth is outwardly directed); distal area of parameres acuminate; clypeus of females with a posteromedian process and disc convex; medial tooth of the anterior margin rounded (see Table 1).
description: Published as part of Sousa, Rafael & Seidel, Matthias, 2021, Review of the Inca irroratus species group with description of two new species of Inca LePeletier & Serville, 1828 (Coleoptera, Scarabaeidae, Cetoniinae), pp. 15-35 in European Journal of Taxonomy 748 (1) on page 21, DOI: 10.5852/ejt.2021.748.1335, http://zenodo.org/record/4736129
Frank Grelka, Die ukrainische Nationalbewegung unter deutscher Besatzungsherrschaft 1918 und 1941/42
Creators: name: Jobst, Kerstin S.
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2007

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 56 Nr. 4 (2007)
Second order quantum phase transition of a homogeneous Bose gas with attractive interactions
Creators: name: Ziń, P.
name: Oleś, B.
name: Trippenbach, M.
name: Sacha, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We consider a homogeneous Bose gas of particles with an attractive interaction. Mean field theory predicts for this system a spontaneous symmetry breaking at a certain value of the interaction strength. We show that at this point a second-order quantum phase transition occurs. We investigate the system in the vicinity of the critical point using Bogoliubov theory and a continuous description, that allows us to analyze {\it quantum fluctuations} in the system even when the Bogoliubov approach breaks down.
description: 7 pages, 3 figures
Self-similar but not conformally invariant traces obtained by modified Loewner forces
Creators: name: Tizdast, S.
name: Ebadi, Z.
name: Cheraghalizadeh, J.
name: Najafi, M. N.
name: Andrade, José S.
name: Herrmann, Hans J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The two-dimensional Loewner exploration process is generalized to the case where the random force is self-similar with positively correlated increments. We model this random force by a fractional Brownian motion with Hurst exponent $H\geq \frac{1}{2}\equiv H_{\text{BM}}$, where $H_{\text{BM}}$ stands for the one-dimensional Brownian motion. By manipulating the deterministic force, we design a scale-invariant equation describing self-similar traces which lack conformal invariance. The model is investigated in terms of the "input diffusivity parameter" $κ$, which coincides with the one of the ordinary Schramm-Loewner evolution (SLE) at $H=H_{\text{BM}}$. In our numerical investigation, we focus on the scaling properties of the traces generated for $κ=2,3$, $κ=4$ and $κ=6,8$ as the representatives, respectively, of the dilute phase, the transition point and the dense phase of the ordinary SLE. The resulting traces are shown to be scale-invariant. Using two equivalent schemes, we extract the fractal dimension, $D_f(H)$, of the traces which decrease monotonically with increasing $H$, reaching $D_f=1$ at $H=1$ for all $κ$ values. The left passage probability (LPP) test demonstrates that, for $H$ values not far from the uncorrelated case (small $ε_H\equiv \frac{H-H_{\text{BM}}}{H_{\text{BM}}}$) the prediction of the ordinary SLE is applicable with an effective diffusivity parameter $κ_{\text{eff}}$. Not surprisingly, the $κ_{\text{eff}}$'s do not fulfill the prediction of SLE for the relation between $D_f(H)$ and the diffusivity parameter.
Modeling Intense-Electron-Beam Generated Plasmas Using a Rigid-Beam Approximation
Creators: name: Richardson, A. S.
name: Swanekamp, S. B.
name: Isner, N. D.
name: Hinshelwood, D. D.
name: Mosher, D.
name: Adamson, P. E.
name: Rittersdorf, I. M.
name: Petrova, Tz. B.
name: Watkins, D. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A model of an electron-beam-plasma system is introduced to model the electrical breakdown physics of low-pressure nitrogen irradiated by an intense pulsed electron beam. The rapidly rising beam current induces an electric field which drives a return current in the plasma. The rigid-beam model is a reduction of the problem geometry to cylindrical coordinates and simplifications to Maxwell's equations that are driven by a prescribed electron beam current density. The model is convenient for comparing various reductions of the plasma dynamics and plasma chemistry while maintaining a good approximation to the overall magnitude of the beam-created electric field. The usefulness of this model is demonstrated by coupling the rigid-beam model to a fluid plasma model and a simplified nitrogen plasma chemistry. The dynamics of this coupled system are computed for a range of background gas pressures, and the results are compared with experimental measurements. At pressures 1 Torr and above, the simulated line-integrated electron densities are within a factor of two of measurements, and show the same trend with pressure as observed in experiment.
description: Accepted for publication in Physics of Plasmas
Evaluating e-Government Services in Kurdistan Institution for Strategic Studies and Scientific Research Using the EGOVSAT Model
Creators: name: Hassan, Bryar A.
name: Ahmed, Aram M.
name: Saeed, Soran A.
name: Saeed, Awin A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Office automation is an initiative used to digitally deliver services to citizens, private and public sectors. It is used to digitally collect, store, create, and manipulate office information as a need of accomplishing basic tasks. Azya Office Automation has been implemented as a pilot project in Kurdistan Institution for Strategic Studies and Scientific Research (KISSR) since 2013. The efficiency of governance in Kurdistan Institution for Strategic Studies and Scientific Research has been improved, thanks to its implementation. The aims of this research paper is to evaluate user satisfaction of this software and identify its significant predictors using EGOVSAT Model. The user satisfaction of this model encompasses five main parts, which are utility, reliability, efficiency, customization, and flexibility. For that purpose, a detailed survey is conducted to measure the level of user satisfaction. A total of sixteen questions have distributed among forty one users of the software in KISSR. In order to evaluate the software, three measurement have been used which are reliability test, regression analysis and correlation analysis. The results indicate that the software is successful to a decent extent based on user satisfaction feedbacks obtained by using EGOVSAT Model.
Holographic heavy-light mesons from non-Abelian DBI
Creators: name: Erdmenger, Johanna
name: Ghoroku, Kazuo
name: Kirsch, Ingo
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the context of gauge/gravity duals with flavor, we examine heavy-light mesons which involve a heavy and a light quark. For this purpose we embed two D7 brane probes at different positions into the gravity background. We establish the non-Abelian Dirac-Born-Infeld (DBI) action for these probes, in which the U(2) matrix describing the embedding is diagonal. The fluctuations of the brane probes correspond to the mesons. In particular, the off-diagonal elements of the U(2) fluctuation matrix correspond to the heavy-light mesons, while the diagonal elements correspond to the light-light and heavy-heavy mesons, respectively. The heavy-light mesons scale differently with the 't Hooft coupling than the mesons involving quarks of equal mass. The model describes both scalar and vector mesons. For different dilaton-deformed gravity backgrounds, we also calculate the Wilson loop energy, and compare with the meson masses.
description: 21 pages, 7 figures
Wissenschaft - Planung - Vertreibung. Neuordnungskonzepte und Umsiedlungspolitik im 20. Jahrhundert
Creators: name: Mühle, Eduard
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2006

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 55 Nr. 2 (2006)
A lack of constraints on the cold opaque HI mass: HI spectra in M31 and M33 prefer multi-component models over a single cold opaque component
Creators: name: Koch, Eric W.
name: Rosolowsky, Erik W.
name: Leroy, Adam K.
name: Chastenet, Jeremy
name: Chiang, I-Da
name: Dalcanton, Julianne
name: Kepley, Amanda A.
name: Sandstrom, Karin M.
name: Schruba, Andreas
name: Stanimirovic, Snezana
name: Utomo, Dyas
name: Williams, Thomas G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Previous work has argued that atomic gas mass estimates of galaxies from 21 cm HI emission are systematically low due to a cold opaque atomic gas component. If true, this opaque component necessitates a ~35% correction factor relative to the mass from assuming optically-thin HI emission. These mass corrections are based on fitting HI spectra with a single opaque component model that produces a distinct "top-hat" shaped line profile. Here, we investigate this issue using deep, high spectral resolution HI VLA observations of M31 and M33 to test if these top-hat profiles are instead superpositions of multiple HI components along the line-of-sight. We fit both models and find that >80% of the spectra strongly prefer a multi-component Gaussian model while <2% prefer the single opacity-corrected component model. This strong preference for multiple components argues against previous findings of lines-of-sight dominated by only cold HI. Our findings are enabled by the improved spectral resolution (0.42 km/s), whereas coarser spectral resolution blends multiple components together. We also show that the inferred opaque atomic ISM mass strongly depends on the goodness-of-fit definition and is highly uncertain when the inferred spin temperature has a large uncertainty. Finally, we find that the relation of the HI surface density with the dust surface density and extinction has significantly more scatter when the inferred HI opacity correction is applied. These variations are difficult to explain without additionally requiring large variations in the dust properties. Based on these findings, we suggest that the opaque HI mass is best constrained by HI absorption studies.
description: Accepted in MNRAS. 25 pg, 13 figures
Politische Machtstrukturen im Ordensstaat Preußen zu Anfang des 14. Jahrhunderts am Beispiel des Obersten Marschalls Heinrich von Plotzke
Creators: name: Vercamer, Grischa
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2007

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 56 Nr. 1 (2007)
Effect of stoichiometry on oxygen incorporation in MgB2 thin films
Creators: name: Singh, R K
name: Shen, Y
name: Gandikota, R
name: Rowell, J M
name: Newman, N
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The amount of oxygen incorporated into MgB2 thin films upon exposure to atmospheric gasses is found to depend strongly on the material's stoichiometry. Rutherford backscattering spectroscopy was used to monitor changes in oxygen incorporation resulting from exposure to: (a) ambient atmosphere, (b) humid atmospheres, (c) anneals in air and (d) anneals in oxygen. The study investigated thin-film samples with compositions that were systematically varied from Mg0.9B2 to Mg1.1B2. A significant surface oxygen contamination was observed in all of these films. The oxygen content in the bulk of the film, on the other hand, increased significantly only in Mg rich films and in films exposed to humid atmospheres.
description: 10 pages, 6 figures, 1 table
A three-state kinetic mechanism for scaffold mediated signal transduction
Creators: name: Locasale, Jason W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: Signaling events in eukaryotic cells are often guided by a scaffolding protein. Scaffold proteins assemble multiple proteins in a spatially localized signaling complex and exert numerous physical effects on signaling pathways. To study these effects, we consider a minimal, three-state kinetic model of scaffold mediated kinase activation. We first introduce and apply a path summation technique to obtain approximate solutions to a single molecule master equation that governs protein kinase activation. We then consider exact numerical solutions. We comment on when this approximation is appropriate and then use this analysis to illustrate the competition of processes occurring at many time scales involved in signal transduction in the presence of a scaffold protein. The findings are consistent with recent experiments and simulation data. Our results provide a framework and offer a mechanism for understanding how scaffold proteins can influence the shape of the waiting time distribution of kinase activation and effectively broaden the times over which protein kinases are activated in the course of cell signaling.
description: 23 pages, 3 figures
Quality Standards for the Hospital Management of Stroke in Vietnam: Budget Impact Analysis
Creators: name: Wilkinson, Thomas
Publisher: name: F1000 Research Limited
Year: 2019

description: In July 2014, 15 Quality Standards (QS) relating the hospital management of stroke were launched by the Vietnamese Ministry of Health’s Medical Services Administration. The QS were developed through a partnership between the Medical Services Administration (Ministry of Health), the Vietnam Health Economics Association (VHEA), and UK’s NICE International, with funding support from the Rockefeller Foundation.
The budget impact analysis (BIA) contained in this document outlines estimates of the major budgetary implications of implementing the QS at Vietnamese hospitals, and has been produced to assist planning and implementation by policy makers at a central, provincial and district level, but also local hospital managers wishing to implement the QS in their own hospital.
It is acknowledged that while substantial costs or savings may be achieved in particular areas by individual hospitals as a result of local circumstances, only major cost drivers have been identified. These have been generalised across three hospital types to reflect the current service provision of acute stroke care in Vietnam: type 1 (high concentration of stroke care), type 2 (medium concentration of stroke care), type 3 (low concentration of stroke care).
Nationalitäten im schlesischen Grenzgebiet. Minderheiten zwischen Polen und der Tschechoslowakei 1945-1948
Creators: name: Hofmann, Andreas R.
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2007

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 56 Nr. 1 (2007)
Neue Staaten - neue Bilder? Visuelle Kultur im Dienst staatlicher Selbstdarstellung in Zentral- und Osteuropa seit 1918
Creators: name: Hein-Kircher, Heidi
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2006

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 55 Nr. 2 (2006)
Juozas Gabrys-Paršaitis, Tautos sargyboj
Creators: name: Demm, Eberhard
name: Hermann, Arthur
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2007

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 56 Nr. 4 (2007)
Synchronized coherent charge oscillations in coupled double quantum dots
Creators: name: Kleinherbers, Eric
name: Stegmann, Philipp
name: König, Jürgen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study coherent oscillations in double quantum dots tunnel-coupled to metallic leads by means of full counting statistics of electron transport. If two such systems are coupled by Coulomb interaction, there are in total six (instead of only two) oscillation modes of the entangled system with interaction-dependent oscillation frequencies. By tuning the bias voltage, one can engineer decoherence such that only one of the six modes, in which the charge oscillations in both double quantum dots become synchronized in antiphase, is singled out. We suggest to use waiting-time distributions and the $g^{(2)}$-correlation function to detect the common frequency and the phase locking.
description: 8 pages, 4 figures
Frank M. Schuster, Zwischen allen Fronten. Osteuropäische Juden während des Ersten Weltkrieges (1914-1919)
Creators: name: Golczewski, Frank
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2006

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 55 Nr. 2 (2006)
Equity, economic evaluation, and disease transmission modelling London, 26-27 March 2018 Meeting report
Creators: name: Gomez, Gabriela
Publisher: name: F1000 Research Limited
Year: 2019

description: The London School of Hygiene and Tropical Medicine (LSHTM) organised a meeting aimed to link academic and policy communities to exchange methods and identify the opportunities and challenges faced when using infectious disease transmission models to evaluate the equity of global health interventions. This meeting report summarised the presentations and discussions from the meeting that took place on the 26th and 27th March 2018, in London, UK. The meeting report was used to develop an outline of methodological considerations for applying iDSI Reference Case Principles 7 and 11 to priority setting for infectious diseases. The meeting objectives were to:
a) Create space for modellers and economists to connect and learn from each other’s approaches to equity analysis and the inclusion of heterogeneity in modelling, economic evaluation, and priority setting;
b) Generate discussion around the technical opportunities and challenges of evaluating equity in economic evaluations using mathematical modelling of infectious diseases;
c) Inform guidance on applying the equity principle of the reference case when using transmission model based economic evaluations.
Development and Application of Sentiment Analysis Tools in Software Engineering: A Systematic Literature Review
Creators: name: Obaidi, Martin
name: Klünder, Jil
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences
subject: D.2.0

description: Software development is a collaborative task and, hence, involves different persons. Research has shown the relevance of social aspects in the development team for a successful and satisfying project closure. Especially the mood of a team has been proven to be of particular importance. Thus, project managers or project leaders want to be aware of situations in which negative mood is present to allow for interventions. So-called sentiment analysis tools offer a way to determine the mood based on text-based communication. In this paper, we present the results of a systematic literature review of sentiment analysis tools developed for or applied in the context of software engineering. Our results summarize insights from 80 papers with respect to (1) the application domain, (2) the purpose, (3) the used data sets, (4) the approaches for developing sentiment analysis tools and (5) the difficulties researchers face when applying sentiment analysis in the context of software projects. According to our results, sentiment analysis is frequently applied to open-source software projects, and most tools are based on support-vector machines. Despite the frequent use of sentiment analysis in software engineering, there are open issues, e.g., regarding the identification of irony or sarcasm, pointing to future research directions.
description: 10 pages, 1 figure
The GALAH Survey and Symbiotic Stars. I. Discovery and follow-up of 33 candidate accreting-only systems
Creators: name: Munari, U.
name: Traven, G.
name: Masetti, N.
name: Valisa, P.
name: Righetti, G. -L.
name: Hambsch, F. -J.
name: Frigo, A.
name: Cotar, K.
name: De Silva, G. M.
name: Freeman, K. C.
name: Lewis, G. F.
name: Martell, S. L.
name: Sharma, S.
name: Simpson, J. D.
name: Ting, Y. -S.
name: Wittenmyer, R. A.
name: Zucker, D. B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have identified a first group of 33 new candidates for symbiotic stars (SySt) of the accreting-only variety among the 600,255 stars so far observed by the GALAH high-resolution spectroscopic survey of the Southern Hemisphere, more than doubling the number of those previously known. GALAH aims to high latitudes and this offers the possibility to sound the Galaxy for new SySt away from the usual Plane and Bulge hunting regions. In this paper we focus on SySt of the M spectral type, showing an Halpha emission with a peak in excess of 0.5 above the adjacent continuum level, and not affected by coherent radial pulsations. These constraints will be relaxed in future studies. The 33 new candidate SySt were subjected to a vast array of follow-up confirmatory observations (X-ray/UV observations with the Swift satellite, search for optical flickering, presence of a near-UV upturn in ground-based photometric and spectroscopic data, radial velocity changes suggestive of orbital motion, variability of the emission line profiles). According to Gaia eDR3 parallaxes, the new SySt are located at the tip of the Giant Branch, sharing the same distribution in M(Ks) of the well established SySt. The accretion luminosities of the new SySt are in the range 1-10 Lsun, corresponding to mass-accretion rates of 0.1-1x10(-9) Msun/yr for WDs of 1 Msun. The M giant of one of the new SySt presents a large Lithium over-abundance.
description: MNRAS, revised version
Ein jüdisches Bildungsprojekt im lokalen Raum Rigas. Die Institutionalisierung jüdischer Aufklärung in Riga um 1900 und die Zielutopien der Gründer der Rigaer Abteilung des Vereins zur Verbreitung von Bildung unter den Juden in Russland
Creators: name: Heinert, Felix
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2007

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 56 Nr. 1 (2007)
Sedimentology and stratigraphy of the southern Sustut basin, north central British Columbia
Creators: name: McKenzie, Kathleen Jane
Publisher: name: University of British Columbia
Year: 2010

description: The Sustut Group within the study area is a nonmarine succession of fine to coarse grained elastics, deposited in an alluvial fan environment. Regionally, the Sustut Group is divisible into the Tango Creek and Brothers Peak Formations. In the study area, the two formations are entirely Late Cretaceous (Campanian to Maastrichtian) in age, based on palynological evidence. In the southern Sustut Basin, only the uppermost 400 m of the Tatlatui Member of the Tango Creek Formation is exposed. Sediments of the Tatlatui Member are divided into fine and coarse grained lithofacies. The fine grained lithofacies is composed of interbedded mudstone, siltstone and fine grained sandstone, which is interpreted as an alluvial plain deposit. Pebble conglomerate interbedded with coarse to medium grained sandstone comprise the coarse grained lithofacies which is considered to be a braided river deposit. The Brothers Peak Formation comprises 1 000 m of diverse elastics and tuffs, which are divisible into the lower and upper Laslui Member, and the overlying Spatsizi Member. The lower Laslui Member conformably overlies the Tatlatui Member of the Tango Creek Formation, and is characterized by several fining upwards sequences of cobble conglomerate to medium grained sandstone, attributed to deposition by high energy braided streams in the mid-fan region of an alluvial fan complex. Sediments of the upper Laslui Member are divided into a fine grained lithofacies consisting of mudstone, interbedded with lesser amounts of siltstone, fine grained sandstone and tuff beds, and a coarse grained lithofacies composed of orthoconglomerate, paracong1omerate and coarse grained sandstone. The fine grained lithofacies comprises the majority of the sequence and is interpreted as an alluvial plain deposit. Coarse grained sediments of the upper Laslui Member were likely deposited during stages of high water discharge, by major distributaries, sheetfloods and debris flows. The Spatsizi Member is gradational from the upper Laslui Member and is composed of sandstone/mudstone sequences interpreted as sandy braided stream deposits of an alluvial plain. Detrital components of the Tango Creek and Brothers Peak sandstones are mainly chert, quartz, plagioclase and volcanic rock fragments. Paleocurrent measurements and provenance considerations suggest source terranes were located to the east during Tango Creek deposition, and to the west during Brothers Peak deposition. In the southern Sustut Basin, the Tango Creek Formation documents uplift and erosion in the Omineca Belt and Paleozoic rock units, following accretion of the first composite terrane (terrane I) to the North American Margin. The Brothers Peak Formation is considered a result of local uplift and volcanic activity, accompanying the accretion of a second composite terrane (terrane II).
Armin Hetzer, Estnische Literatur. Eine historische Übersicht
Creators: name: Pistohlkors, Gert Von
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2007

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 56 Nr. 4 (2007)
Option Europa. Deutsche, polnische und ungarische Europapläne des 19. und 20. Jahrhunderts
Creators: name: Loew, Peter Oliver
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2006

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 55 Nr. 2 (2006)
Growth and Characterisation Studies of Eu$_3$O$_4$ Thin Films Grown on Si/SiO$_2$ and Graphene
Creators: name: Aboljadayel, R. O. M.
name: Ionescu, A.
name: Burton, O. J.
name: Cheglakov, G.
name: Hofmann, S.
name: Barnes, C. H. W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report the growth, structural and magnetic properties of the less studied Eu-oxide phase, Eu$_3$O$_4$, thin films grown on a Si/SiO$_2$ substrate and Si/SiO$_2$/graphene using molecular beam epitaxy. The X-ray diffraction scans show that highly-textured crystalline Eu$_3$O$_4$(001) films are grown on both substrates, whereas the film deposited on graphene has a better crystallinity than that grown on the Si/SiO$_2$ substrate. The SQUID measurements show that both films have a Curie temperature of about 5.5 K, with a magnetic moment of 0.0032 emu/g at 2 K. The mixed-valency of the Eu cations has been confirmed by the qualitative analysis of the depth-profile X-ray photoelectron spectroscopy measurements with the Eu$^{2+}$ : Eu$^{3+}$ ratio of 28 : 72. However, surprisingly, our films show no metamagnetic behaviour as reported for the bulk and powder form. Furthermore, the Raman spectroscopy scans show that the growth of the Eu$_3$O$_4$ thin films has no damaging effect on the underlayer graphene sheet. Therefore, the graphene layer is expected to retain its properties.
description: 16 pages, 9 figures
Transforming engineering education in Sub-Saharan Africa: a case for Nigeria
Creators: name: Fomunyam, Dr. Kehdinga George
Publisher: name: Mangosuthu University of Technology (MUT)
Year: 2021
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: This paper presents the role of improved engineering education in transforming Nigeria and indeed Africa’s economy. The paper has determined that the training of engineering graduates in Nigeria is way below the globally accepted standard and basic facilities necessary to impact knowledge are lacking in institutions all across the country. These problems are compounded by government underfunding resulting in poorly equipped facilities, obsolete curriculum and Weak university-industry partnership. The approach used in carrying out the study include appraisal of government policies, review of research work and studies carried out by experts and academicians. It is our recommendation that the transformation effort focus on creating a system at every level of education particularly the tertiary institutions, hinged on quality control and full participation of private organizations and relevant industries in terms of sponsoring institutions and mentoring students through the result-based learning methods now being adopted globally. This can be achieved by establishing a body to administer a mandatory post graduate exam to all graduates as a pre-requisite for receiving the engineering degree certificate which will be a prerequisite for employment. Also, a centralised accreditation body should be established that carries out regular quality checks on engineering facilities to ensure they meet the set standard. This will yield better trained engineers, improved training methods and facilities as well as reduction in failure of infrastructure.
Online Simulation at Machine Level: A Systematic Review
Creators: name: Deubert, Darius
name: Klingel, Lars
name: Selig, Andreas
Publisher: name: arXiv
Year: 2024
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The importance of simulation at machine level in industrial environments is steadily increasing especially in the design and commissioning phase. Using models during the operation phase together with the real machine or plant is referred to as online simulation. Online simulation is used for system monitoring, predictive analyses, decision support or online optimization and therefore has various advantages and a wide field of applications. This paper has the aim to characterize online simulation at machine level in industrial automation focusing on key technologies and common applications. Therefore, a set of 65 relevant publications, which are focusing on this subject, is found by database search, expert consultation, and snowballing. As key technological aspects, the used model types, interfaces and platforms, and the aspects of initialization and synchronization are further investigated. The results are interpreted and limitations, knowledge gaps and future prospects are discussed. The potential of online simulation at machine level especially arises due to the increasing availability of component and machine models from the design and commissioning phase, which can be reused for online simulation. Remaining challenges are identified concerning implementation, simulation platforms, model maintenance and especially in the field of synchronization.
description: 29 pages, 12 figures, submitted to Springer - The International Journal on Advanced Manufacturing Technology
Cornelius Hasselblatt, Geschichte der estnischen Literatur. Von den Anfängen bis zur Gegenwart
Creators: name: Pistohlkors, Gert Von
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2007

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 56 Nr. 4 (2007)
System Size, Energy and Centrality Dependence of Pseudorapidity Distributions of Charged Particles in Relativistic Heavy Ion Collisions
Creators: name: Alver, B.
name: Back, B. B.
name: Baker, M. D.
name: Ballintijn, M.
name: Barton, D. S.
name: Betts, R. R.
name: Bindel, R.
name: Busza, W.
name: Chai, Z.
name: Chetluru, V.
name: García, E.
name: Gburek, T.
name: Gulbrandsen, K.
name: Hamblen, J.
name: Harnarine, I.
name: Henderson, C.
name: Hofman, D. J.
name: Hollis, R. S.
name: Hołyński, R.
name: Holzman, B.
name: Iordanova, A.
name: Kane, J. L.
name: Kulinich, P.
name: Kuo, C. M.
name: Li, W.
name: Lin, W. T.
name: Loizides, C.
name: Manly, S.
name: Mignerey, A. C.
name: Nouicer, R.
name: Olszewski, A.
name: Pak, R.
name: Reed, C.
name: Richardson, E.
name: Roland, C.
name: Roland, G.
name: Sagerer, J.
name: Sedykh, I.
name: Smith, C. E.
name: Stankiewicz, M. A.
name: Steinberg, P.
name: Stephans, G. S. F.
name: Sukhanov, A.
name: Szostak, A.
name: Tonjes, M. B.
name: Trzupek, A.
name: van Nieuwenhuizen, G. J.
name: Vaurynovich, S. S.
name: Verdier, R.
name: Veres, G. I.
name: Walters, P.
name: Wenger, E.
name: Willhelm, D.
name: Wolfs, F. L. H.
name: Wosiek, B.
name: Woźniak, K.
name: Wyngaardt, S.
name: Wysłouch, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present the first measurements of the pseudorapidity distribution of primary charged particles in Cu+Cu collisions as a function of collision centrality and energy, \sqrtsnn = 22.4, 62.4 and 200 GeV, over a wide range of pseudorapidity, using the PHOBOS detector. Making a global comparison of Cu+Cu and Au+Au results, we find that the total number of produced charged particles and the rough shape (height and width) of the pseudorapidity distributions are determined by the number of nucleon participants. More detailed studies reveal that a more precise matching of the shape of the Cu+Cu and Au+Au pseudorapidity distributions over the full range of pseudorapidity occurs for the same Npart/2A value rather than the same Npart value. In other words, it is the collision geometry rather than just the number of nucleon participants that drives the detailed shape of the pseudorapidity distribution and its centrality dependence at RHIC energies.
description: Submitted to Physical Review Letters
A sub-2% Distance to M31 from Photometrically Homogeneous Near-Infrared Cepheid Period-Luminosity Relations Measured with the Hubble Space Telescope
Creators: name: Li, Siyang
name: Riess, Adam G.
name: Busch, Michael P.
name: Casertano, Stefano
name: Macri, Lucas M.
name: Yuan, Wenlong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present Period-Luminosity Relations (PLRs) for 55 Cepheids in M31 with periods ranging from 4 to 78 days observed with the Hubble Space Telescope (HST) using the same three-band photometric system recently used to calibrate their luminosities. Images were taken with the Wide Field Camera 3 in two optical filters (F555W and F814W) and one near-infrared filter (F160W) using the Drift And SHift (DASH) mode of operation to significantly reduce overheads and observe widely-separated Cepheids in a single orbit. We include additional F160W epochs for each Cepheid from the Panchromatic Hubble Andromeda Treasury (PHAT) and use light curves from the Panoramic Survey Telescope and Rapid Response System of the Andromeda galaxy (PAndromeda) project to determine mean magnitudes. Combined with a 1.28$\%$ absolute calibration of Cepheid PLRs in the Large Magellanic Cloud from Riess et al. (2019a) in the same three filters, we find a distance modulus to M31 of $μ_0$ = 24.407 $\pm$ 0.032, corresponding to 761 $\pm$ 11 kpc and 1.49$\%$ uncertainty including all error sources, the most precise determination of its distance to date. We compare our results to past measurements using Cepheids and the Tip of the Red Giant Branch (TRGB). This study also provides the groundwork for turning M31 into a precision anchor galaxy in the cosmic distance ladder to measure the Hubble constant together with efforts to measure a fully geometric distance to M31.
description: Accepted by ApJ, 19 pages, 5 figures, 6 tables
Peer Pasternack, Wissenschaft und Hochschule in Osteuropa. Geschichte und Transformation. Bibliografische Dokumentation 1990-2005
Creators: name: Meyer, Klaus
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2006

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 55 Nr. 4 (2006)
Riho Saard, Eesti kirikute esivaimulikkond 1165-2006
Creators: name: Beyer, Jürgen
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2007

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 56 Nr. 4 (2007)