cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Wolfgang Kimmig (Text), Helmut Hell (Aufnahmen), Vorzeit an Rhein und Donau. Südwestdeutschland, Nordschweiz, Ostfrankreich. Das Bild in Forschung und Lehre
Creators: name: Uslar, Rafael Von
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Wolfgang Kimmig (Text), Helmut Hell (Aufnahmen), Vorzeit an Rhein und Donau. Südwestdeutschland, Nordschweiz, Ostfrankreich. Das Bild in Forschung und Lehre. Veröffentlichungen der Landesbildstellen Baden und Württemberg, Band 1. Lindau und Konstanz 1958. 132 Seiten, 142 Abbildungen, eine Farbtafel.
description: Bonner Jahrbücher, Bd. 157 (1957): Bonner Jahrbücher
Some aspects of fungal roles in the decomposition of lodgepole pine (pinus contorta loud.) and white spruce (picea glauca (Moench) voss) leaf litter
Creators: name: Tillekeratne, Kumudu
Publisher: name: University of Calgary
Year: 1989
Subjects: subject: QK 762.5 T54 1989
subject: Leaves - Biodegradation
subject: Fungal metabolites

description: Bibliography: p. 283-304.
title: Non-Gaussian Component Analysis
title: New Ideas, New Proofs, New Applications
titleType: Subtitle
Creators: name: Panov, Vladimir
Publisher: name: Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät
Year: 2010
Subjects: subject: dimension reduction
subject: non-Gaussian components
subject: EDR subspace
subject: classification problem
subject: Value at Risk
subject: 330 Wirtschaft

description: In this article, we present new ideas concerning Non-Gaussian Component Analysis (NGCA). We use the structural assumption that a high-dimensional random vector X can be represented as a sum of two components - a lowdimensional signal S and a noise component N. We show that this assumption enables us for a special representation for the density function of X. Similar facts are proven in original papers about NGCA ([1], [5], [13]), but our representation differs from the previous versions. The new form helps us to provide a strong theoretical support for the algorithm; moreover, it gives some ideas about new approaches in multidimensional statistical analysis. In this paper, we establish important results for the NGCA procedure using the new representation, and show benefits of our method.
Die vor - und frühgeschichtlichen Denkmalerund Funde in Schleswig-Holstein. Bd. 2: K. Kersten, Vorgeschichte des Kreises Herzogtum Lauenburg
Creators: name: Geschwendt, F.
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Die vor - und frühgeschichtlichen Denkmalerund Funde in Schleswig-Holstein. Bd. 2: K. Kersten, Vorgeschichte des Kreises Herzogtum Lauenburg. Erdgeschichtliche Einleitung von K. Gripp. K. Wachholtz- Verlag Neumünster, 1951. 514 Seiten, 82 Tafeln, 143 Textabbildungen, 7 Karten.
description: Bonner Jahrbücher, Bd. 157 (1957): Bonner Jahrbücher
Studien zur Lausitzer Kultur
Creators: name: Gollub, S.
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Studien zur Lausitzer Kultur. Forschungen zur Vor- und Frühgeschichte 3, 1958. Hrsg. Institut für Vor- und Frühgeschichte der Karl-Marx-Universitat Leipzig (Verlag J. Ambrosius Barth, Leipzig). 162 Seiten, 44 Abbildungen, 4 Tafeln.
description: Bonner Jahrbücher, Bd. 157 (1957): Bonner Jahrbücher
An Integrated core-well log study and stratigraphic correlation of the lower Cretaceous Mannville Group, Lloydminster Sub-Basin, west-central Saskatchewan and east-central Alberta
Creators: name: Tompkins, Brian G.
Publisher: name: University of Calgary
Year: 1989
Subjects: subject: TN 871.35 T65 1989a
subject: Geophysical well logging
subject: Geology, Stratigraphic
subject: Formations (Geology) - Alberta
subject: Formations (Geology) - Saskatchewan
subject: Mannville Group (Alta.)
subject: Mannville Group (Sask.)

description: Bibliography: p. 189-197.
Agent-Based Modeling of Intracellular Transport
Creators: name: Birbaumer, Mirko
name: Schweitzer, Frank
Publisher: name: arXiv
Year: 2011
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: Multiagent Systems (cs.MA)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We develop an agent-based model of the motion and pattern formation of vesicles. These intracellular particles can be found in four different modes of (undirected and directed) motion and can fuse with other vesicles. While the size of vesicles follows a log-normal distribution that changes over time due to fusion processes, their spatial distribution gives rise to distinct patterns. Their occurrence depends on the concentration of proteins which are synthesized based on the transcriptional activities of some genes. Hence, differences in these spatio-temporal vesicle patterns allow indirect conclusions about the (unknown) impact of these genes. By means of agent-based computer simulations we are able to reproduce such patterns on real temporal and spatial scales. Our modeling approach is based on Brownian agents with an internal degree of freedom, $θ$, that represents the different modes of motion. Conditions inside the cell are modeled by an effective potential that differs for agents dependent on their value $θ$. Agent's motion in this effective potential is modeled by an overdampted Langevin equation, changes of $θ$ are modeled as stochastic transitions with values obtained from experiments, and fusion events are modeled as space-dependent stochastic transitions. Our results for the spatio-temporal vesicle patterns can be used for a statistical comparison with experiments. We also derive hypotheses of how the silencing of some genes may affect the intracellular transport, and point to generalizations of the model.
Werner Coblenz, Das Gräberfeld von Prositz
Creators: name: Uslar, Rafael Von
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Werner Coblenz, Das Gräberfeld von Prositz. Teil 1 (Veröffentl. d. Landesmus. f. Vorgesch. Dresden Bd. 3) Leipzig 1955. 110 Seiten, 150 Abbildungen, 40 Tafeln.
description: Bonner Jahrbücher, Bd. 157 (1957): Bonner Jahrbücher
Flickering study of nova like systems KR Aur and UU Aqr
Creators: name: Dobrotka, Andrej
name: Mineshige, Shin
name: Casares, Jorge
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a study of the flickering activity in two nova like systems KR Aur and UU Aqr. We applied a statistical model of flickering simulations in accretion discs based on turbulent angular momentum transport between two adjacent rings with an exponential distribution of the turbulence dimension scale. The model is based on a steady state disc model which is satisfied in the case of hot ionized discs of nova like cataclysmic variables. Our model successfully fits the observed power density spectrum of KR Aur with the disc parameter alpha = 0.10 - 0.40 and an inner disc truncation radius in the range R_in = 0.88 - 1.67 x 10^9 cm. The exact values depend on the mass transfer rate in the sense that alpha decreases and R_in increases with mass transfer rate. In any case, the inner disc radius found for KR Aur is considerably smaller than in quiescent dwarf novae, as predicted by the disc instability model. On the other hand, our simulations fail to reproduce the power density spectrum of UU Aqr. A tantalizing explanation involves the possible presence of spiral waves, which are expected in UU Aqr, because of its low mass ratio, but not in KR Aur. In general our model predicts the observed concentration of flickering in the central disc. We explain this by the radial dependence of the angular momentum gradient.
description: 9 pages, 5 figures, 2 tables, accepted for publication in MNRAS
Estimation and Testing for Varying Coefficients in Additive Models with Marginal Integration
Creators: name: Yang, Lijian
name: Park, Byeong U.
name: Xue, Lan
name: Härdle, Wolfgang Karl
Publisher: name: Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät
Year: 2005
Subjects: subject: Rate of convergence
subject: Equivalent kernels
subject: German real GNP
subject: Local polynomial
subject: Marginal integration
subject: 330 Wirtschaft

description: We propose marginal integration estimation and testing methods for the coefficients of varying coefficient multivariate regression model. Asymptotic distribution theory is developed for the estimation method which enjoys the same rate of convergence as univariate function estimation. For the test statistic, asymptotic normal theory is established. These theoretical results are derived under the fairly general conditions of absolute regularity (beta-mixing). Application of the test procedure to the West German real GNP data reveals that a partially linear varying coefficient model is best parsimonious in fitting the data dynamics, a fact that is also confirmed with residual diagnostics
Complex equality, relativism and critical perspective: Michael Walzer and his critics
Creators: name: Toombs, Bruce
Publisher: name: University of Calgary
Year: 1989
Subjects: subject: B 945 W3 T66 1989
subject: Walzer, Michael - Criticism and interpretation

description: Bibliography: p. 149-158.
description: In this thesis, Michael Walzer's theory of complex equality is examined to see whether it is, as some of its critics have claimed, a relativistic theory of justice. In order to do this, the theory itself is set in the context of the so-called 'liberal-communitarian debate', since it is best considered a communitarian theory. Some of its more important aspects are made clear, especially its basis in what Walzer calls the "common life" of a political community and in a specific theory about the social origins of social goods (Chapter One). Then the views of four critics (Joshua Cohen, Susan Moller - Okin, Ronald Dworkin and Norman Daniels) are considered, and Walzer is defended against charges of relativism. A specific notion of incommensurability is introduced and attributed to Walzer, and his notion of a universal, if minimal, code of moral prohibitions is introduced, both by way of responding to the relativism charge (Chapter Two). The defense is continued by way of offering a contextualist, historicistic reading of Walzer that stresses his emphasis on moral justification rather than moral truth. The charge that his theory lacks critical distance, which is linked to the relativism charge, is considered, and the conclusion reached that while on the basis of the Walzer's writings so far we should consider that there is a possible moral conservatism (linked to his communitarianism) inherent in his view, his thinking appears to be in transition. He may be moving out of the communitarian camp, into the space between the liberals and the communitarians (Chapter 3).
title: Karl Marx und Friedrich Engels: Die Deutsche Ideologie: Kommentar
Creators: name: Loheit, Jan
name: Sonderforschungsbereich Transregio 294 "Strukturwandel Des Eigentums"
Publisher: name: Sonderforschungsbereich Transregio 294 "Strukturwandel des Eigentums"
Year: 2022
Subjects: subject: Eigentumsverhältnisse
subject: Privateigentum
subject: Ideologiekritik
subject: Materialismus
subject: 300

description: Neue Bibliothek des Eigentums
Mach's Principle: A Response to Mashhoon and Wesson's Paper arXiv: 1106.6036
Creators: name: Barbour, Julian
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In their recent "Mach's principle and higher-dimensional dynamics", Mashhoon and Wesson argue that Mach's principle is not properly incorporated into general relativity and that in Einstein's theory "the origin of inertia remains essentially the same as in Newtonian physics." While it is true that the motion of a single test particle in a Newtonian inertial frame of reference appears essentially the same as in an Einsteinian local inertial frame, this misses the point. The issue is not what motion looks like in an inertial frame of reference but what is the origin of the inertial frame. Unlike Newtonian dynamics, general relativity does implement Mach's principle when considered from this correctly formulated point of view.
description: 8 pages, 2 figures, to be submitted to Annalen der Physik and followed by a response by Mashhoon and Wesson
Visualization of Competitive Market Structure by Means of Choice Data
Creators: name: Kunz, Werner
Publisher: name: Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät
Year: 2007
Subjects: subject: Three-mode PCA
subject: elasticities
subject: joint plots
subject: market structure analysis
subject: 330 Wirtschaft

description: This paper presents a method for visualizing competitive market structures based on scanner panel data where asymmetries are taken into account. For this, I combined consumer choice models based on mixed logit models with three-mode principal component analysis. This approach can be used to unfold a competitive market structure map. The methodology presented is able to quantify the clout and receptivity of various brands. The results can then be visualized over time. Using this approach, guidelines for promotional activities of new brands can be provided, and possible threats from the competition detected.
Astraeus I: The interplay between galaxy formation and reionization
Creators: name: Hutter, Anne
name: Dayal, Pratika
name: Yepes, Gustavo
name: Gottlöber, Stefan
name: Legrand, Laurent
name: Ucci, Graziano
Publisher: name: Oxford : Oxford Univ. Press
Year: 2021
Subjects: subject: Dark ages
subject: First stars
subject: Galaxies: evolution
subject: Galaxies: high-redshift
subject: Intergalactic medium
subject: Methods: numerical
subject: Reionization
subject: 520

description: We introduce a new self-consistent model of galaxy evolution and reionization, ASTRAEUS (seminumerical rAdiative tranSfer coupling of galaxy formaTion and Reionization in N-body dArk mattEr simUlationS), which couples a state-of-the-art N-body simulation with the semi-analytical galaxy evolution DELPHI and the seminumerical reionization scheme CIFOG. ASTRAEUS includes all the key processes of galaxy formation and evolution (including accretion, mergers, supernova, and radiative feedback) and follows the time and spatial evolution of the ionized regions in the intergalactic medium (IGM). Importantly, it explores different radiative feedback models that cover the physically plausible parameter space, ranging from a weak and delayed to a strong and immediate reduction of gas mass available for star formation. From our simulation suite that covers the different radiative feedback prescriptions and ionization topologies, we find that radiative feedback continuously reduces star formation in galaxies with Mh ≲ 109.5 M☉ upon local reionization; larger mass haloes are unaffected even for the strongest and immediate radiative feedback cases during reionization. For this reason, the ionization topologies of different radiative feedback scenarios differ only on scales smaller than 1–2 comoving Mpc, and significant deviations are found only when physical parameters (e.g. the escape fraction of ionizing photons) are altered based on galactic properties. Finally, we find that observables (the ultraviolet luminosity function, stellar mass function, reionization histories and ionization topologies) are hardly affected by the choice of the used stellar population synthesis models that model either single stars or binaries.
title: Karl Marx: Das Kapital: Kommentar
Creators: name: Loheit, Jan
name: Sonderforschungsbereich Transregio 294 "Strukturwandel Des Eigentums"
Publisher: name: Sonderforschungsbereich Transregio 294 "Strukturwandel des Eigentums"
Year: 2023
Subjects: subject: Eigentum
subject: Bürgerliche Gesellschaft
subject: 300

description: Neue Bibliothek des Eigentums
On the Origin of Hard X-Ray Emissions from the Behind-the-limb Flare on 2014 September 1
Creators: name: Wu, Yihong
name: Rouillard, Alexis P.
name: Kouloumvakos, Athanasios
name: Vainio, Rami
name: Afanasiev, Alexandr N.
name: Plotnikov, Illya
name: Murphy, Ronald J.
name: Mann, Gottfried J.
name: Warmuth, Alexander
Publisher: name: London : Institute of Physics Publ.
Year: 2021
Subjects: subject: Solar coronal mass ejection shocks
subject: Solar x-ray emission
subject: Solar particle emission
subject: Solar electromagnetic emission
subject: 520

description: The origin of hard X-rays and γ-rays emitted from the solar atmosphere during occulted solar flares is still debated. The hard X-ray emissions could come from flaring loop tops rising above the limb or coronal mass ejection shock waves, two by-products of energetic solar storms. For the shock scenario to work, accelerated particles must be released on magnetic field lines rooted on the visible disk and precipitate. We present a new Monte Carlo code that computes particle acceleration at shocks propagating along large coronal magnetic loops. A first implementation of the model is carried out for the 2014 September 1 event, and the modeled electron spectra are compared with those inferred from Fermi Gamma-ray Burst Monitor (GBM) measurements. When particle diffusion processes are invoked, our model can reproduce the hard electron spectra measured by GBM nearly 10 minutes after the estimated on-disk hard X-rays appear to have ceased from the flare site.
Measuring Active-to-Sterile Neutrino Oscillations with Neutral Current Coherent Neutrino-Nucleus Scattering
Creators: name: Anderson, A. J.
name: Conrad, J. M.
name: Figueroa-Feliciano, E.
name: Ignarra, C.
name: Karagiorgi, G.
name: Scholberg, K.
name: Shaevitz, M. H.
name: Spitz, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Light sterile neutrinos have been introduced as an explanation for a number of oscillation signals at $Δm^2 \sim 1$ eV$^2$. Neutrino oscillations at relatively short baselines provide a probe of these possible new states. This paper describes an accelerator-based experiment using neutral current coherent neutrino-nucleus scattering to strictly search for active-to-sterile neutrino oscillations. This experiment could, thus, definitively establish the existence of sterile neutrinos and provide constraints on their mixing parameters. A cyclotron-based proton beam can be directed to multiple targets, producing a low energy pion and muon decay-at-rest neutrino source with variable distance to a single detector. Two types of detectors are considered: a germanium-based detector inspired by the CDMS design and a liquid argon detector inspired by the proposed CLEAR experiment.
description: 10 pages, 7 figures
title: Getting Used to Risks
title: Reference Dependence and Risk Inclusion
titleType: Subtitle
Creators: name: Matthey, Astrid
Publisher: name: Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät
Year: 2005
Subjects: subject: habituation
subject: risk perception
subject: reference-dependent preferences
subject: WTA/WTP disparity
subject: health risk
subject: 330 Wirtschaft

description: Experimental and field evidence show that people perceive and evaluate new risks differently from risks that are common. In particular, people get used to the presence of certain risks and become less eager to avoid them. We explain this observation by including risks in the reference states of individuals, which requires a more general concept of the reference state than has previously been considered in the literature. We find two effects. First, the inclusion of the risk in the reference state changes its evaluation. A risk being present on the market induces a selfenforcing process of increasing acceptance of this risk without any new information becoming available or peoples tastes changing. We term this the risk inclusion effect. Second, a risk with lower inherent (reference-independent)utility may be preferred to a risk with higher inherent utility if individuals are more used to accepting the former than the latter. This leads to inefficient decisions if habituation is seen as contributing less to welfare than inherent utility. Both effects have implications for the optimal regulation of risks.
Geology of the Mt. Lulu area, southern Cariboo Mountains, British Columbia
Creators: name: Walker, Rick T.
Publisher: name: University of Calgary
Year: 1989
Subjects: subject: QE 621.5 C36 W34 1989a
subject: Geology - British Columbia - Lulu, Mount
subject: Geology, Stratigraphic

description: Bibliography: p. 253-263.
Kaons production at finite temperature and baryon density in an effective relativistic mean field model
Creators: name: Iazzi, F.
name: Lavagno, A.
name: Pigato, D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the kaons production at finite temperature and baryon density by means of an effective relativistic mean-field model with the inclusion of the full octet of baryons. Kaons are considered taking into account of an effective chemical potential depending on the self-consistent interaction between baryons. The obtained results are compared with a minimal coupling scheme, calculated for different values of the anti-kaon optical potential.
description: 3 pages, contribution presented to the International Conference on Exotic Atoms and Related Topics
Confidence Corridorsfor MultivariateGeneralizedQuantile Regression
Creators: name: Chao, Shih-Kang
name: Proksch, Katharina
name: Dette, Holger
name: Härdle, Wolfgang Karl
Publisher: name: Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät
Year: 2014
Subjects: subject: Bootstrap
subject: expectile regression
subject: Goodness-of-fit tests
subject: quantile treatment effect
subject: smoothing and nonparametric regression
subject: 310 Sammlungen allgemeiner Statistiken
subject: 330 Wirtschaft

description: We focus on the construction of confidence corridors for multivariate nonparametric generalized quantile regression functions. This construction is based on asymptotic results for the maximal deviation between a suitable nonparametric estimator and the true function of interest which follow after a series of approximation steps including a Bahadur representation, a new strong approximation theorem and exponential tail inequalities for Gaussian random fields. As a byproduct we also obtain confidence corridors for the regression function in the classical mean regression. In order to deal with the problem of slowly decreasing error in coverage probability of the asymptotic confidence corridors, which results in meager coverage for small sample sizes, a simple bootstrap procedure is designed based on the leading term of the Bahadur representation. The finite sample properties of both procedures are investigated by means of a simulation study and it is demonstrated that the bootstrap procedure considerably outperforms the asymptotic bands in terms of coverage accuracy. Finally, the bootstrap confidence corridors are used to study the efficacy of the National Supported Work Demonstration, which is a randomized employment enhancement program launched in the 1970s. This article has supplementary materials online.
Data
Creators: name: Moroshkina, Nadezhda
name: Tikhonov, Roman
Publisher: name: Open Science Framework
Year: 2022

description: We investigated the effect of dyadic interaction on implicit learning performance using a visual artificial grammar learning task. The experiment consisted of a learning phase, dyadic and individual test phases, and the process dissociation procedure as an awareness measure. In the dyadic test phase, participants of the experimental group exchanged initial guesses and confidence ratings before revising their judgments. In the control group, participants could revise their responses but had no communication with each other.
An Analog position sensing system
Creators: name: Gonnason, William R.
Publisher: name: University of Calgary
Year: 1989
Subjects: subject: QC 53 G66 1989
subject: Remote sensing - Computer programs
subject: Directors - Computer programs

description: Bibliography: p. 122-125.
description: This thesis describes an analog position sensing system which has not been previously reported, to the knowledge of the author. The system offers the advantages of improved resolution and speed compared to presently available position sensors. The position sensing system uses a discrete array of sensors to sample a diffuse light distribution, which forms the system input. An analog network using corrective feedback determines the centroid of the light distribution, and produces an output corresponding to the position of the centroid of the intensity distribution. The network output is shown to be directly related to the intensity centroid, thus providing a means of relating the output to the position of the light source. The theory describing the performance and limitations of the sensing system is developed, and simulations to test the algorithm are described. The network has been verified by a hardware prototype. The design of an integrated implementation based on the hardware and simulation results is also described. Simulation and hardware testing results are presented to illustrate the potential performance of the system. It is hoped that the approach can be extended in future to develop inexpensive integrated sensors for industrial and commercial use.
Detection of Energy Cutoffs in Flare-accelerated Electrons
Creators: name: Xia, Fanxiaoyu
name: Su, Yang
name: Wang, Wen
name: Wang, Linghua
name: Warmuth, Alexander
name: Gan, Weiqun
name: Li, Youping
Publisher: name: London : Institute of Physics Publ.
Year: 2021
Subjects: subject: Solar x-ray flares
subject: X-ray telescopes
subject: Solar x-ray emission
subject: Solar flares
subject: Solar flare spectra
subject: 520

description: Energy cutoffs in electron distribution define the lower and upper limits on the energy range of energetic electrons accelerated in solar flares. They are crucial parameters for understanding particle acceleration processes and energy budgets. Their signatures have been reported in studies of flattened flare X-ray spectra, i.e., the impulsive emission of nonthermal bremsstrahlung from energetic electrons impacting ambient, thermal plasma. However, these observations have not provided unambiguous constraints on the cutoffs. Moreover, other processes may result in similar spectral features. Even the existence and necessity of cutoffs as physical parameters of energetic electrons have been under debate. Here we report a search for their signatures in flare-accelerated electrons with two approaches, i.e., in both X-ray spectra and solar energetic particle (SEP) events. These represent two different electron populations, but may contain information of the same acceleration process. By studying a special group of late impulsive flares, and a group of selected SEP events, we found evidence of cutoffs revealed in both X-ray spectra and SEP electron distributions. In particular, we found for the first time consistent low- and high-energy cutoffs in both hard X-ray-producing and escaping electrons in two events. We also showed the importance of high-energy cutoff in studies of spectral shapes. These results provide evidence of cutoffs in flare-accelerated energetic electrons and new clues for constraining electron distribution parameters and particle acceleration models.
Geometric background charge: dislocations on capillary bridges
Creators: name: Irvine, William
name: Vitelli, Vincenzo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Recent experiments have shown that colloidal crystals confined to weakly curved capillary bridges introduce groups of dislocations organized into `pleats' as means to relieve the stress caused by the Gaussian curvature of the surface. We consider the onset of this curvature-screening mechanism, by examining the energetics of isolated dislocations and interstitials on capillary bridges with free boundaries. The boundary provides an essential contribution to the problem, akin to a background charge that "neutralizes" the unbalanced integrated curvature of the surface. This makes it favorable for topologically neutral dislocations and groups of dislocations - rather than topologically charged disclinations and scars - to relieve the stress caused by the unbalanced gaussian curvature of the surface. This effect applies to any crystal on a surface with non-vanishing integrated Gaussian curvature and stress-free boundary conditions. We corroborate the analytic results by numerically computing the energetics of a defected lattice of springs confined to surfaces with weak positive and negative curvature
description: 7 pages, 4 figures
Observational constraints on the redshift evolution of X-ray scaling relations of galaxy clusters out to z ~ 1.5
Creators: name: Reichert, A.
name: Böhringer, H.
name: Fassbender, R.
name: Mühlegger, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A precise understanding of the relations between observable X-ray properties of galaxy clusters and cluster mass is a vital part of the application of X-ray galaxy cluster surveys to test cosmological models. An understanding of how these relations evolve with redshift is just emerging from a number of observational data sets. The current literature provides a diverse and inhomogeneous picture of scaling relation evolution. We attempt to transform these results and the data on recently discovered distant clusters into an updated and consistent framework, and provide an overall view of scaling relation evolution. We study in particular the M-T, L_X-T, and M-L_X relation combining 14 published data sets supplemented with recently published data of distant clusters and new results from follow-up observations of the XMM-Newton Distant Cluster Project (XDCP). We find that the evolution of the M-T relation is consistent with the self-similar prediction, while the evolution of X-ray luminosity for a given temperature and mass for a given X-ray luminosity is slower than predicted. Our best fit results for the evolution factor E(z)^alpha are alpha = -1.04+-0.07 for the M-T relation, alpha = -0.23+0.12-0.62 for the L-T relation, and alpha = -0.93+0.62-0.12 for the M-L_X relation. We find that selection biases are the most likely reason for apparent inconsistencies between different published data sets. The new results provide the currently most robust calibration of high-redshift cluster mass estimates based on X-ray luminosity and temperature and help us to improve the prediction of the number of clusters to be found in future galaxy cluster X-ray surveys, such as eROSITA. The comparison of evolution results with hydrodynamical cosmological simulations suggests that early preheating of the intracluster medium provides the most suitable scenario to explain the observed evolution.
description: 24 pages, 18 figures, accepted for publication in A&A
Cognitive Bubbles
Creators: name: Bosch-Rosa, Ciril
name: Meissner, Thomas
name: Bosch-Domènech, Antoni
Publisher: name: Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät
Year: 2015
Subjects: subject: Asset Market Experiment
subject: Bubbles
subject: Cognitive Sophistication
subject: 310 Sammlungen allgemeiner Statistiken
subject: 330 Wirtschaft

description: Smith et al. (1988) reported large bubbles and crashes in experimental asset markets, a result that has been replicated by a large literature. Here we test whether the occurrence of bubbles depends on the experimental subjects' cognitive sophistication. In a two-part experiment, we first run a battery of tests to assess the subjects' cognitive sophistication and classify them into low or high levels of cognitive sophistication. We then invite them separately to two asset market experiments populated only by subjects with either low or high cognitive sophistication. We observe classic bubble- crash patterns in the sessions populated by subjects with low levels of cognitive sophistication. Yet, no bubbles or crashes are observed with our sophisticated subjects. This result lends strong support to the view that the usual bubbles and crashes in experimental asset markets are caused by subjects' confusion and, therefore, raises some doubts about the external validity of this type of experiments.
title: Psychosis in a population cohort: A four class four dimension model of schizophrenia and affective psychoses
Creators: name: Murray, Valerie
Publisher: name: University of Glasgow
Year: 2005
Subjects: subject: Clinical psychology.

description: Psychosis is a low prevalence disorder with high cost to those affected, their families, and society in general. Enormous effort to determine the causes and pathophysiology of schizophrenia has been relatively unrewarded, and no robust biological markers have been identified. It is argued that reliance on the Kraepelinian dichotomy model of psychosis, as demonstrated in ICD-10 and DSM- IV, impedes research, especially in psychiatric genetics. Modelling the psychoses from first principles demands a population based a theoretical approach. By considering the whole spectrum of psychosis in a general population the natural boundaries of the underlying disorder(s) may be best understood. This thesis describes the use of both dimensional and categorical approaches in the same data, providing complementary approaches to delineating the psychosis phenotype. Classes and dimensions thus identified are validated by their pattern of associations with many variables previously known to be important in schizophrenia. The findings are anchored in the literature by making comparisons with traditional diagnostic categories and first rank symptoms in addition to comparison with other studies.
Electric dipole polarizability and the neutron skin
Creators: name: Piekarewicz, J.
name: Agrawal, B. K.
name: Colo, G.
name: Nazarewicz, W.
name: Paar, N.
name: Reinhard, P. -G.
name: Roca-Maza, X.
name: Vretenar, D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The recent high-resolution measurement of the electric dipole (E1) polarizability (alphad) in 208Pb [Phys. Rev. Lett. 107, 062502 (2011)] provides a unique constraint on the neutron-skin thickness of this nucleus. The neutron-skin thickness (rskin) of 208Pb is a quantity of critical importance for our understanding of a variety of nuclear and astrophysical phenomena. To assess the model dependence of the correlation between alphad and rskin, we carry out systematic calculations for 208Pb, 132Sn, and 48Ca based on the nuclear density functional theory (DFT) using both non-relativistic and relativistic energy density functionals (EDFs). Our analysis indicates that whereas individual models exhibit a linear dependence between alphad and rskin, this correlation is not universal when one combines predictions from a host of different models. By averaging over these model predictions, we provide estimates with associated systematic errors for rskin and alphad for the nuclei under consideration. We conclude that precise measurements of rskin in both 48Ca and 208Pb---combined with the recent measurement of alphad---should significantly constrain the isovector sector of the nuclear energy density functional.
description: Manuscript contains 5 pages, 2 figures, and 1 table. Submitted to Physical Review Letters
Ausstellungskalender
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 41 Nr. 3 (1988): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Correlation vs. Causality in Stock Market Comovement
Creators: name: Weber, Enzo
Publisher: name: Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät
Year: 2007
Subjects: subject: Identification
subject: Structural EGARCH
subject: DAX
subject: Spillover
subject: Common Factor
subject: 330 Wirtschaft

description: This paper seeks to disentangle the sources of correlations between high-, mid- and lowcap stock indexes from the German prime standard. In principle, such comovement can arise from direct spillover between the variables or due to common factors. By standard means, these different components are obviously not identifiable. As a solution, the underlying study proposes specifying ARCH-type models for both the idiosyncratic innovations and a common factor, so that the model structure can be identified through heteroscedasticity. The seemingly surprising result that smaller caps have higher influence than larger ones is explained by asymmetric information processing in financial markets. Broad macroeconomic information is shown to enter the common factor rather than the segment-specific shocks.
On the absence of backsplash analogues to NGC 3109 in the ΛcDM framework
Creators: name: Banik, Indranil
name: Haslbauer, Moritz
name: Pawlowski, Marcel S
name: Famaey, Benoit
name: Kroupa, Pavel
Publisher: name: Oxford : Oxford Univ. Press
Year: 2021
Subjects: subject: galaxies: distances and redshifts
subject: galaxies: individual: NGC 3109
subject: galaxies: interactions
subject: gravitation
subject: methods: numerical
subject: methods: statistical
subject: 520

description: The dwarf galaxy NGC 3109 is receding 105 km s-1 faster than expected in a Lambda cold dark matter (ΛCDM) timing argument analysis of the Local Group and external galaxy groups within 8 Mpc. If this few-body model accurately represents long-range interactions in ΛCDM, this high velocity suggests that NGC 3109 is a backsplash galaxy that was once within the virial radius of the Milky Way and was slingshot out of it. Here, we use the Illustris TNG300 cosmological hydrodynamical simulation and its merger tree to identify backsplash galaxies. We find that backsplashers as massive (≥4.0 × 1010 M⊙) and distant (≥1.2 Mpc) as NGC 3109 are extremely rare, with none having also gained energy during the interaction with their previous host. This is likely due to dynamical friction. Since we identified 13 225 host galaxies similar to the Milky Way or M31, we conclude that postulating NGC 3109 to be a backsplash galaxy causes >3.96σ tension with the expected distribution of backsplashers in ΛCDM. We show that the dark matter only version of TNG300 yields much the same result, demonstrating its robustness to how the baryonic physics is modelled. If instead NGC 3109 is not a backsplasher, consistency with ΛCDM would require the 3D timing argument analysis to be off by 105 km s-1 for this rather isolated dwarf, which we argue is unlikely. We discuss a possible alternative scenario for NGC 3109 and the Local Group satellite planes in the context of MOND, where the Milky Way and M31 had a past close flyby 7-10 Gyr ago.
Comment on "High-Precision Determination of the Electric and Magnetic Form Factors of the Proton"
Creators: name: Arrington, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In a recent Letter, Bernauer, et al. present fits to the proton electromagnetic form factors, GEp(Q^2) and GMp(Q^2), along with extracted proton charge and magnetization radii based on large set of new, high statistical precision (<0.2%) cross section measurements. The Coulomb corrections they apply differ dramatically from more modern and complete calculations, implying significant error in their final results.
description: To appear as a comment in Physical Review Letters
Burnout, work environment and perceived social support among psychologists
Creators: name: Horback, Denise Faye
Publisher: name: University of Calgary
Year: 1986
Subjects: subject: BF 481 H65 1987
subject: Burn out (Psychology)
subject: Psychologists - Job stress
subject: Psychologists - Psychology
subject: Work - Psychological aspects

description: Bibliography: p. 179-191.
title: The impact of international law on the trading policies of the United States and the European Union with special reference to the regulation of subsidies, dumping and countervailing measures
Creators: name: MacLean, Robert M.
Publisher: name: University of Glasgow
Year: 1995
Subjects: subject: International law, economics.

description: Everyone should be concerned when the rule of law fragments in international relations. Once this phenomenon occurs, international disputes become rife and international order is threatened. Understanding why the rule of law has such a limited normative impact on international behaviour is the subject of this work. A body of international rules has been selected and analyzed in their application by states. The particular rules selected are those of the pre-1995 GATT in general and the specific rules regulating the use of subsidies, countervailing duties and anti-dumping measures in particular. This thesis examines these principles and how they operated on the international plateau prior to the adoption of new rules at the Uruguay Round of Multilateral Trade Negotiations. Thereafter, the impact of these rules on the trade policies and practices of the United States and the European Union are examined in rigorous detail. Specific attention is paid to the substantive anti-dumping and countervailing duty I was of the US and the EU as well as the administrative practices of the two trading entities. After such a comparison is made, it becomes clear that, in this context, both the United States and the European Union conduct this aspect of their respective trade policies independently of the prescribed rules. This comparison requires an indepth evaluation of the policies and administrative practices of both these states. Hence, the size of this work is justified by the need for close and detailed analysis of the relevant laws, regulations and administrative practices. The final conclusion is that the limited normative impact of these rules can then be ascribed to five factors: (a) the limited normative efficacy of the international trade legal order itself; (b) the degree to which substantive rules of law embody an adequate consensus in relation to their content; (c) the extent to which these international rules are compatible with the policy objectives and goals sought by the United States and the European Union in this context; (d) the ability of the rules to permeate the decision-making processes inside states and to prevail over non-legal factors and considerations; and (e) the strength of such rules in terms of their ability to withstand dilution or avoidance when incorporated at the national level. These conclusions are an unfortunate reflection of the limitations of the rule of international law. However, perhaps they can provide greater understanding of the manner in which international relations are conducted in reality.
The Long-term effects of intrafamilial child sexual victimization on adult couple relationships
Creators: name: Wolfe, Lorrie K.
Publisher: name: University of Calgary
Year: 1988
Subjects: subject: RC 569.5 A28 W64 1988
subject: Adult child sexual abuse victims - Attitudes
subject: Adult child sexual abuse victims - Relations with

description: Bibliography: p. 234-238.
Coronal Conditions for the Occurrence of Type II Radio Bursts
Creators: name: Kouloumvakos, Athanasios
name: Rouillard, Alexis
name: Warmuth, Alexander
name: Magdalenic, Jasmina
name: Jebaraj, Immanuel. C.
name: Mann, Gottfried
name: Vainio, Rami
name: Monstein, Christian
Publisher: name: London : Institute of Physics Publ.
Year: 2021
Subjects: subject: Solar radio emission
subject: Solar coronal mass ejections
subject: Solar coronal mass ejection shocks
subject: 520

description: Type II radio bursts are generally observed in association with flare-generated or coronal-mass-ejection-driven shock waves. The exact shock and coronal conditions necessary for the production of type II radio emission are still under debate. Shock waves are important for the acceleration of electrons necessary for the generation of the radio emission. Additionally, the shock geometry and closed field line topology, e.g., quasi-perpendicular shock regions or shocks interacting with streamers, play an important role for the production of the emission. In this study we perform a 3D reconstruction and modeling of a shock wave observed during the 2014 November 5 solar event. We determine the spatial and temporal evolution of the shock properties and examine the conditions responsible for the generation and evolution of type II radio emission. Our results suggest that the formation and evolution of a strong, supercritical, quasi-perpendicular shock wave interacting with a coronal streamer were responsible for producing type II radio emission. We find that the shock wave is subcritical before and supercritical after the start of the type II emission. The shock geometry is mostly quasi-perpendicular throughout the event. Our analysis shows that the radio emission is produced in regions where the supercritical shock develops with an oblique to quasi-perpendicular geometry.
Bayesian Networks and Sex-related Homicides
Creators: name: Stahlschmidt, Stephan
name: Tausendteufel, Helmut
name: Härdle, Wolfgang Karl
Publisher: name: Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät
Year: 2011
Subjects: subject: Bayesian Networks
subject: structure learning
subject: offender profiling
subject: 330 Wirtschaft

description: We present a statistical investigation on the domain of sex-related homicides. As general sociological and psychological theory on this specific type of crime is incomplete or even lacking, a data-driven approach is implemented. In detail, graphical modelling is applied to learn the dependency structure and several structure learning algorithms are combined to yield a skeleton corresponding to distinct Bayesian Networks. This graph is subsequently analysed and presents a distinction between an offender and a situation driven crime.
title: A new perspective on the economic valuation of informal care
title: The well-being approach revisited
titleType: Subtitle
Creators: name: Kehl, Konstantin
name: Stahlschmidt, Stephan
Publisher: name: Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät
Year: 2013
Subjects: subject: 310 Sammlungen allgemeiner Statistiken
subject: 330 Wirtschaft

description: Informal care has drawn much attention among scholars and policymakers as it concerns an essential but hard to evaluate resource of welfare. Albeit several studies addressed the monetary value of informal care, differences in the relationship between caregivers and recipients have often been ignored. We report on a profound and formerly unobserved distinction between care in the household and non-household care for a family member or in a voluntary framework. According to our results caregivers within the household perceive care as a burden and a positive shadow price arises. By contrast in the family but non-household context - and especially in the voluntary case - care is (at least partly) understood as an enriching experience which extends well-being and leads to negative shadow prices. This distinction calls a marketized view of informal care into question and may contribute to explaining the limitations of monetary incentive policies to encourage informal care.