cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Aggregation of magnetic holes in a rotating magnetic field
Creators: name: Černák, Jozef
name: Helgesen, Geir
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We have experimentally investigated field induced aggregation of nonmagnetic particles confined in a magnetic fluid layer when rotating magnetic fields were applied. After application of a magnetic field rotating in the plane of the fluid layer, the single particles start to form two-dimensional (2D) clusters, like doublets, triangels, and more complex structures. These clusters aggregated again and again to form bigger clusters. During this nonequilibrium process, a broad range of cluster sizes was formed, and the scaling exponents, $z$ and $z'$, of the number of clusters $N(t)\sim t^{z'}$and average cluster size $S(t)\sim t^{z}$ were calculated. The process could be characterized as diffusion limited cluster-cluster aggregation. We have found that all sizes of clusters that occured during an experiment, fall on a single curve as the dynamic scaling theory predicts. Hovewer, the characteristic scaling exponents $z',\: z$ and crossover exponents $Δ$ were not universal. A particle tracking method was used to find the dependence of the diffusion coefficients $D_{s}$ on cluster size $s$. The cluster motions show features of \textit{\emph{Brownian}} motion. The average diffusion coefficients $$ depend on the cluster sizes $s$ as a power law $\propto s^γ$ where values of $γ$ as different as $γ=-0.62\pm0.19$ and $γ=-2.08\pm0. were found in two of the experiments.
Reduction of musical performance anxiety by attentional training and behaviour rehearsal : an exploration of cognitive mediational processes
Creators: name: Kendrick, Margaret Joan
Publisher: name: University of British Columbia
Year: 2010

description: The present study evaluates attentional training and behaviour rehearsal in treating musical performance anxiety and in modifying self-talk and perceptions of self-efficacy. Pianists who experienced extreme anxiety in. performing situations were randomly assigned to the following conditions: (l) attentional training (n = 19), (2) behaviour rehearsal (n = 16), (3) waiting list control (n = 18). Three therapy sessions were conducted over a three-week period with subjects in the first two conditions meeting in small groups for one and one-half to two hours. Subjects in the attentional training program were taught to become aware of their negative thoughts before, during, and after their performances and to substitute these negative thoughts with positive task-relevant self-statements. Cognitive recall from videotaped performances and cognitive-modeling slide-tape sequences facilitated this process. Subjects in the behaviour rehearsal program were given a rationale for the effectiveness of repeated performance before a small supportive audience in reducing performance anxiety. Both treatments required performances during therapy sessions and in home assignments. A multivariate analysis of covariance revealed no difference among the three groups at post-treatment on self-report, behavioural, or physiological measures. At a five-week follow-up, however, attentional training and behaviour rehearsal were more effective than the waiting list control condition in reducing visual signs of anxiety and improving the quality of playing. Attentional training was superior to behaviour rehearsal in reducing visual signs of anxiety. Two scales were developed to measure the cognitive mediational variables of self-talk and self-efficacy. At follow-up, both treatments were superior to no treatment in increasing positive and decreasing negative thinking surrounding performances. Attentional training was superior to the other two conditions in enhancing expectations of personal efficacy. Behaviour rehearsal did not surpass the attentional training treatment on any of the six dependent measures, at follow-up. These findings were discussed in relation to previous research on attentional training and behaviour rehearsal, and to the cognitive mediational processes common to both therapies. Issues such as modeling effects, expectancy effects, follow-up, home assignments, subject attrition, and implications for the musical community were also discussed.
Managing Knowledge in Energy Data Spaces
Creators: name: Janev, Valentina
name: Vidal, Maria-Esther
name: Endris, Kemele
name: Pujic, Dea
Publisher: name: arXiv
Year: 2021
Subjects: subject: Databases (cs.DB)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences
subject: H.2.5; H.2.8

description: Data in the energy domain grows at unprecedented rates and is usually generated by heterogeneous energy systems. Despite the great potential that big data-driven technologies can bring to the energy sector, general adoption is still lagging. Several challenges related to controlled data exchange and data integration are still not wholly achieved. As a result, fragmented applications are developed against energy data silos, and data exchange is limited to few applications. In this paper, we analyze the challenges and requirements related to energy-related data applications. We also evaluate the use of Energy Data Ecosystems (EDEs) as data-driven infrastructures to overcome the current limitations of fragmented energy applications. EDEs are inspired by the International Data Space (IDS) initiative launched in Germany at the end of 2014 with an overall objective to take both the development and use of the IDS reference architecture model to a European/global level. The reference architecture model consists of four architectures related to business, security, data and service, and software aspects. This paper illustrates the applicability of EDEs and IDS reference architecture in real-world scenarios from the energy sector. The analyzed scenario is positioned in the context of the EU-funded H2020 project PLATOON.
description: Based on the article Valentina Janev, Maria-Esther Vidal, Kemele M. Endris, Dea Pujic: Managing Knowledge in Energy Data Spaces. WWW (Companion Volume) 2021: 7-15
title: Pre-registration: RI-CLPM assessing effects of personal deprivation, group deprivation and SDO predicting historical negation.
Creators: name: Sibley, Chris G
name: Osborne, Danny
Publisher: name: OSF Registries
Year: 2021
Subjects: subject: Social Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: NZAVS
subject: New Zealand Attitudes and Values Study
subject: Statistical Syntax
subject: Supplementary Materials
subject: Technical Documentation

description: The goal is to use NZAVS data to assess the within-person cross-lag effects of individual-based relative deprivation and ethic group-based relative deprivation on historical negation. The model will also include SDO as a covariate. Analysis will use RI-CLPM (see syntax below) of Time 03-Time 09 of the NZAVS. These waves are selected because this is a largest consecutive series of waves in which all four of these variables were measured (both relative deprivation were first included at Time 03, whereas historical negation was not measured at Time 10). Analysis will focus solely on participants who identify as members of the European majority ethnic group and will use scale mean scores for the four measures of interest (items listed below).
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Kirchner, Hélène
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2018
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization

description: Front Matter, Table of Contents, Preface, Conference Organization
description: LIPIcs, Vol. 108, 3rd International Conference on Formal Structures for Computation and Deduction (FSCD 2018), pages 0:i-0:xx
Stability of the magnetotail current sheet with normal magnetic field and field-aligned plasma flows
Creators: name: Shi, Chen
name: Artemyev, Anton
name: Velli, Marco
name: Tenerani, Anna
Publisher: name: arXiv
Year: 2021
Subjects: subject: Space Physics (physics.space-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: One of the most important problems of magnetotail dynamics is the substorm onset and the related instability of the magneotail current sheet. Since the simplest 2D current sheet configuration with monotonic $B_z$ was proven to be stable to the tearing mode, the focus of the instability investigation moved to more specific configurations, e.g. kinetic current sheets with strong transient ion currents and current sheets with non-monotonic $B_z$ (local $B_z$ minima or/and peaks). Stability of the latter current sheet configuration has been studied both within kinetic and fluid approaches, whereas the investigation of the transient ion effects were limited to kinetic models only. This paper aims to provide detailed analysis of stability of a multi-fluid current sheet configuration that mimics current sheets with transient ions. Using the system with two field-aligned ion flows that mimic the effect of pressure non-gyrotropy, we construct 1D current sheet with a finite $B_z$. This model describes well recent findings of very thin intense magnetotail current sheets. The stability analysis of this two-ion model confirms the stabilizing effect of finite $B_z$ and shows that the most stable current sheet is the one with exactly counter-streaming ion flows and zero net flow. Such field-aligned flows may substitute the contribution of the pressure tensor nongyrotropy to the stress balance, but cannot overtake the stabilizing effect of $B_z$. Obtained results are discussed in the context of magnetotail dynamical models and spacecraft observations.
title: A multidimensional framework for measuring biotic novelty: How novel is a community?
Creators: name: Schittko, Conrad
name: Bernard-Verdier, Maud
name: Heger, Tina
name: Buchholz, Sascha
name: Kowarik, Ingo
name: von der Lippe, Moritz
name: Seitz, Birgit
name: Joshi, Jasmin
name: Jeschke, Jonathan M.
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 580 Pflanzen (Botanik)

description: Anthropogenic changes in climate, land use, and disturbance regimes, as well as introductions of non-native species can lead to the transformation of many ecosystems. The resulting novel ecosystems are usually characterized by species assemblages that have not occurred previously in a given area. Quantifying the ecological novelty of communities (i.e., biotic novelty) would enhance the understanding of environmental change. However, quantification remains challenging since current novelty metrics, such as the number and/or proportion of non-native species in a community, fall short of considering both functional and evolutionary aspects of biotic novelty. Here, we propose the Biotic Novelty Index (BNI), an intuitive and flexible multidimensional measure that combines (a) functional differences between native and non-native introduced species with (b) temporal dynamics of species introductions. We show that the BNI is an additive partition of Rao's quadratic entropy, capturing the novel interaction component of the community's functional diversity. Simulations show that the index varies predictably with the relative amount of functional novelty added by recently arrived species, and they illustrate the need to provide an additional standardized version of the index. We present a detailed R code and two applications of the BNI by (a) measuring changes of biotic novelty of dry grassland plant communities along an urbanization gradient in a metropolitan region and (b) determining the biotic novelty of plant species assemblages at a national scale. The results illustrate the applicability of the index across scales and its flexibility in the use of data of different quality. Both case studies revealed strong connections between biotic novelty and increasing urbanization, a measure of abiotic novelty. We conclude that the BNI framework may help building a basis for better understanding the ecological and evolutionary consequences of global change.
description: Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe; 1209
title: Changing belief in the COVID lab leak theory from 2020 to 2024 [reg date 08/06/2024]
Creators: name: Osborne, Danny
name: Sibley, Chris G
Publisher: name: OSF Registries
Year: 2021
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: New Zealand Attitudes and Values Study

description: Registration of analysis plan to conduct LGMs of the item ‘I think it is quite likely that COVID-19 was created in a laboratory’ upon completion of Wave 15 of the NZAVS.
Presure-Induced Superconducting State of Antiferromagnetic CaFe$_2$As$_2$
Creators: name: Lee, Hanoh
name: Park, Eunsung
name: Park, Tuson
name: Sidorov, V. A.
name: Ronning, F.
name: Bauer, E. D.
name: Thompson, J. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The antiferromagnet CaFe$_2$As$_2$ does not become superconducting when subject to ideal hydrostatic pressure conditions, where crystallographic and magnetic states also are well defined. By measuring electrical resistivity and magnetic susceptibility under quasi-hydrostatic pressure, however, we find that a substantial volume fraction of the sample is superconducting in a narrow pressure range where collapsed tetragonal and orthorhombic structures coexist. At higher pressures, the collapsed tetragonal structure is stabilized, with the boundary between this structure and the phase of coexisting structures strongly dependent on pressure history. Fluctuations in magnetic degrees of freedom in the phase of coexisting structures appear to be important for superconductivity.
description: revised (6 pages, 5 figures) - includes additional experimental results
An analytical solution of the isentropic vortex problem in the special relativistic magnetohydrodynamics
Creators: name: Duan, Junming
name: Tang, Huazhong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The isentropic vortex problem is frequently solved to test the accuracy of numerical methods and verify corresponding code. Unfortunately, its existing solution was derived in the relativistic magnetohydrodynamics by numerically solving an ordinary differential equation. This note provides an analytical solution of the 2D isentropic vortex problem with explicit algebraic expressions in the special relativistic hydrodynamics and magnetohydrodynamics and extends it to the 3D case.
description: 14 pages, 5 figures
title: Post-Brexit no-trade-deal scenario: short-term consumer benefit at the expense of long-term economic development
Creators: name: Wenz, Leonie
name: Levermann, Anders
name: Willner, Sven Norman
name: Otto, Christian
name: Kuhla, Kilian
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 530 Physik

description: After the United Kingdom has left the European Union it remains unclear whether the two parties can successfully negotiate and sign a trade agreement within the transition period. Ongoing negotiations, practical obstacles and resulting uncertainties make it highly unlikely that economic actors would be fully prepared to a “no-trade-deal” situation. Here we provide an economic shock simulation of the immediate aftermath of such a post-Brexit no-trade-deal scenario by computing the time evolution of more than 1.8 million interactions between more than 6,600 economic actors in the global trade network. We find an abrupt decline in the number of goods produced in the UK and the EU. This sudden output reduction is caused by drops in demand as customers on the respective other side of the Channel incorporate the new trade restriction into their decision-making. As a response, producers reduce prices in order to stimulate demand elsewhere. In the short term consumers benefit from lower prices but production value decreases with potentially severe socio-economic consequences in the longer term.
description: Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe; 1208
One light composite Higgs boson facing electroweak precision tests
Creators: name: Gillioz, Marc
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study analytically and numerically the bounds imposed by the electroweak precision tests on a minimal composite Higgs model. The model is based on spontaneous SO(5)/SO(4) breaking, so that an approximate custodial symmetry is preserved. The Higgs arises as a pseudo-Goldstone boson at a scale below the electroweak symmetry breaking scale. We show that one can satisfy the electroweak precision constraints without much fine-tuning. This is the case if the left-handed top quark is fully composite, which gives a mass spectrum within the reach of the LHC. However a composite top quark is strongly disfavoured by flavour physics. The alternative is to have a singlet top partner at a scale much lighter than the rest of the composite fermions. In this case the top partner would be light enough to be produced significantly at the LHC.
description: 15 pages, 4 figures; v2: figures and discussion improved, references added; v3: minor changes, final version to appear in PRD
Conjugate Generators of Knot and Link Groups
Creators: name: Callahan, Jason
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25 (Primary), 57M05 (Secondary)

description: This note shows that if two elements of equal trace (e.g., conjugate elements) generate an arithmetic two-bridge knot or link group, then the elements are parabolic. This includes the figure-eight knot and Whitehead link groups. Similarly, if two conjugate elements generate the trefoil knot group, then the elements are peripheral.
description: 10 pages, submitted to Journal of Knot Theory and Its Ramifications
The Approximate Capacity of the Many-to-One and One-to-Many Gaussian Interference Channels
Creators: name: Bresler, Guy
name: Parekh, Abhay
name: Tse, David
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Recently, Etkin, Tse, and Wang found the capacity region of the two-user Gaussian interference channel to within one bit/s/Hz. A natural goal is to apply this approach to the Gaussian interference channel with an arbitrary number of users. We make progress towards this goal by finding the capacity region of the many-to-one and one-to-many Gaussian interference channels to within a constant number of bits. The result makes use of a deterministic model to provide insight into the Gaussian channel. The deterministic model makes explicit the dimension of signal scale. A central theme emerges: the use of lattice codes for alignment of interfering signals on the signal scale.
description: 45 pages, 16 figures. Submitted to IEEE Transactions on Information Theory
Studying the interstellar medium to look for relics of triggered star formation among stellar clusters
Creators: name: Paron, S.
name: Granada, A.
name: Areal, M. B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Evidence of triggered star formation at large spatial scales involving stellar clusters is scarce. We investigate a Galactic region (l=130.0, b=0.35) populated by several open stellar clusters that according to the last GAIA data release, are located at a distance of about 2.9 kpc. By analyzing the interstellar medium (ISM) at infrared, centimeter, and millimeter wavelengths towards this group of clusters we discovered a shell of material of about 2 degree in size at the same distance. We suggest that the shell, mainly observed at 12 um and in the Hi emission at 21 cm, was generated by the action of massive stars belonging to clusters Berkeley 7 and UBC 414, that lie at its center. Five clusters (MWSC0152, Czernik 6, Czernik 7, Berkeley 6, NGC 663, and NGC 654) lie at the border of this shell. From the comparison between the dynamical time of the discovered Hi shell and the analysis of the ages of stellar populations in these clusters, we conclude that the expansion of the shell could have triggered in the past the formation of stars in some of them. We point out that in order to find physical evidence supporting a genetic connection between stellar clusters, it is necessary not only to study the individual clusters and their stellar populations, but also to investigate their surrounding ISM at a large spatial scale.
description: Accepted in MNRAS (June 3, 2021)
Electronic interlayer coupling in the LTT phase of La1.79Eu0.2Sr0.01CuO4
Creators: name: Huecker, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The electronic interlayer transport of the lightly doped antiferromagnet La1.79Eu0.2Sr0.01CuO4 has been studied by means of magneto-resistance measurements. The central problem addressed concerns the differences between the electronic interlayer coupling in the tetragonal low-temperature (LTT) phase and the orthorhombic low-temperature (LTO) phase. The key observation is that the spin-flip induced drop in the c-axis magneto-resistance of the LTO phase, which is characteristic for pure La2-xSrxCuO4, dramatically decreases in the LTT phase. The results show that the transition from orthorhombic to tetragonal symmetry and from collinear to non-collinear antiferromagnetic spin structure eliminates the strain dependent anisotropic interlayer hopping as well as the concomitant spin-valve type transport channel. Implications for the stripe ordered LTT phase of La2-xBaxCuO4 are briefly discussed.
description: 8 pages, 9 figures
title: An early-warning indicator for Amazon droughts exclusively based on tropical Atlantic sea surface temperatures
Creators: name: Ciemer, Catrin
name: Rehm, Lars
name: Kurths, Jürgen
name: Donner, Reik V.
name: Winkelmann, Ricarda
name: Boers, Niklas
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 530 Physik
subject: 550 Geowissenschaften

description: Droughts in tropical South America have an imminent and severe impact on the Amazon rainforest and affect the livelihoods of millions of people. Extremely dry conditions in Amazonia have been previously linked to sea surface temperature (SST) anomalies in the adjacent tropical oceans. Although the sources and impacts of such droughts have been widely studied, establishing reliable multi-year lead statistical forecasts of their occurrence is still an ongoing challenge. Here, we further investigate the relationship between SST and rainfall anomalies using a complex network approach. We identify four ocean regions which exhibit the strongest overall SST correlations with central Amazon rainfall, including two particularly prominent regions in the northern and southern tropical Atlantic. Based on the time-dependent correlation between SST anomalies in these two regions alone, we establish a new early-warning method for droughts in the central Amazon basin and demonstrate its robustness in hindcasting past major drought events with lead-times up to 18 months.
description: Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe; 1207
The Fermi surface of Ba(1-x)K(x)Fe2As2 and its evolution with doping
Creators: name: Liu, C.
name: Samolyuk, G. D.
name: Lee, Y.
name: Ni, N.
name: Kondo, T.
name: Santander-Syro, A. F.
name: Bud'ko, S. L.
name: McChesney, J. L.
name: Rotenberg, E.
name: Valla, T.
name: Fedorov, A. V.
name: Canfield, P. C.
name: Harmon, B. N.
name: Kaminski, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We use angle-resolved photoemission spectroscopy (ARPES) to investigate the electronic properties of the newly discovered iron-arsenic superconductor, Ba(1-x)K(x)Fe2As2 and non-supercondcuting BaFe2As2. Our study indicates that the Fermi surface of the undoped, parent compound BaFe$_2$As$_2$ consists of hole pocket(s) at Gamma (0,0) and larger electron pocket(s) at X (1,0), in general agreement with full-potential linearized plane wave (FLAPW) calculations. Upon doping with potassium, the hole pocket expands and the electron pocket becomes smaller with its bottom approaching the chemical potential. Such an evolution of the Fermi surface is consistent with hole doping within a rigid band shift model. Our results also indicate that FLAPW calculation is a reasonable approach for modeling the electronic properties of both undoped and K-doped iron arsenites.
description: 4 pages, 3 figures
Measurement of light mesons at RHIC by the PHENIX experiment
Creators: name: Naglis, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The PHENIX experiment at RHIC has measured a variety of light neutral mesons ($π^{0}$, K$_{S}^{0}$, $η$, $ω$, $η^{\prime}$, $ϕ$) via multi-particle decay channels over a wide range of transverse momentum. A review of the recent results on the production rates of light mesons in p+p and their nuclear modification factors in d+Au, Cu+Cu and Au+Au collisions at different energies is presented.
description: 5 pages, 4 figures, talk given at Hard Probes 2008 conference in La Toja, Spain. submitted to EPJ C
The non-Kerr black hole with acceleration
Creators: name: Gillani, Usman A.
name: Rahim, Rehana
name: Saifullah, Khalid
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The no-hair theorem can be tested in the strong gravity regime by using the top-bottom approach and the bottom-top approach. The non-Kerr spacetime of the later approach is an ideal framework to do the tests in the region very close to the black holes. In this work, we propose a non-Kerr black hole metric (and its charged extension) that is accelerating as well. These new objects are studied for their basic properties and thermodynamics.
Spectrum of Higgsonium in the SM and beyond
Creators: name: Sauli, V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the formalism of Bethe-Salpeter equation (BSE) the Higgsonium bound state is studied. The condition for formation of Higgsonium bound states are discussed in SM and in the simple extension of.
description: 7 pages, talk presented at SCADRON 70, Workshop on Scalar Mesons and Related Topics, February 2008, Lisbon
Implementable algorithms for stochastic nonlinear programs with applications to portfolio selection and revision
Creators: name: Kallberg, Jarl Gunnar
Publisher: name: University of British Columbia
Year: 2010

description: This dissertation has two main objectives: first, to develop efficient algorithms for the solution of one and two period constrained optimization problems, and second, to apply these methods to the solution of portfolio selection and revision problems. The algorithms developed are based upon the Frank-Wolfe method. A convergent algorithm is developed which modifies this approach to allow for sequences of approximations to the objective and to the gradient of the objective, as well as inexact linear searches. By utilizing varying degrees of accuracy (with increasing precision as the optimum is approached), the method will be computationally more tractable than fixed tolerance methods without sacrificing the convergence properties. This algorithm is then applied to a static portfolio selection problem. Here the investor has a wealth allotment to be allocated to a number of possible risky investments with the objective of maximizing the expected utility of terminal wealth. The investor's preferences are assumed to be given by a (von-Neumann-Morgenstern) utility function. For the empirical studies seven classes of utility functions and ten joint normally distributed assets are used. One question investigated is the degree to which the Arrow-Pratt risk aversion measure determines portfolio composition. The empirical results are augmented by a theorem showing (for normally distributed security returns) that the Rubinstein global risk aversion measure is sufficient to determine portfolio composition. The second part of this dissertation deals with two period problems. An algorithm, based on the method of Hogan for extremal value functions, is developed. The extensions (and subsequent advantages) are analogous to those developed for the one period problem. This method is used to solve a portfolio revision problem utilizing five joint normally distributed assets and proportional transaction costs. Empirically, it is shown that significant errors are generated by ignoring the revision aspect of the problem, even with serially uncorrelated returns.
Embedded Deep Regularized Block HSIC Thermomics for Early Diagnosis of Breast Cancer
Creators: name: Yousefi, Bardia
name: Sharifipour, Hossein Memarzadeh
name: Maldague, Xavier P. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Thermography has been used extensively as a complementary diagnostic tool in breast cancer detection. Among thermographic methods matrix factorization (MF) techniques show an unequivocal capability to detect thermal patterns corresponding to vasodilation in cancer cases. One of the biggest challenges in such techniques is selecting the best representation of the thermal basis. In this study, an embedding method is proposed to address this problem and Deep-semi-nonnegative matrix factorization (Deep-SemiNMF) for thermography is introduced, then tested for 208 breast cancer screening cases. First, we apply Deep-SemiNMF to infrared images to extract low-rank thermal representations for each case. Then, we embed low-rank bases to obtain one basis for each patient. After that, we extract 300 thermal imaging features, called thermomics, to decode imaging information for the automatic diagnostic model. We reduced the dimensionality of thermomics by spanning them onto Hilbert space using RBF kernel and select the three most efficient features using the block Hilbert Schmidt Independence Criterion Lasso (block HSIC Lasso). The preserved thermal heterogeneity successfully classified asymptomatic versus symptomatic patients applying a random forest model (cross-validated accuracy of 71.36% (69.42%-73.3%)).
description: Authors version. arXiv admin note: text overlap with arXiv:2010.06784
Strong Lefschetz elements of the coinvariant rings of finite Coxeter groups
Creators: name: Maeno, Toshiaki
name: Numata, Yasuhide
name: Wachi, Akihito
Publisher: name: arXiv
Year: 2008
Subjects: subject: Representation Theory (math.RT)
subject: Commutative Algebra (math.AC)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 20F55, 13A50, 14M15, 14N15

description: For the coinvariant rings of finite Coxeter groups of types other than H$_4$, we show that a homogeneous element of degree one is a strong Lefschetz element if and only if it is not fixed by any reflections. We also give the necessary and sufficient condition for strong Lefschetz elements in the invariant subrings of the coinvariant rings of Weyl groups.
description: 18 pages
Baryon Acoustic Oscillations from Integrated Neutral Gas Observations: an instrument to observe the 21cm hydrogen line in the redshift range 0.13 $
Creators: name: Wuensche, Carlos A.
name: Abdalla, Elcio
name: Abdalla, Filipe Batoni
name: Barosi, Luciano
name: Wang, Bin
name: An, Rui
name: Barreto, João Alberto de Moraes
name: Battye, Richard
name: Brito, Franciso A.
name: Browne, Ian
name: Correia, Daniel Souza
name: Costa, André Alencar
name: Delabrouille, Jacques
name: Dickinson, Clive
name: Feng, Chang
name: Ferreira, Elisa
name: Fornazier, Karin
name: de Gasperis, Giancarlo
name: Gutierrez, Priscila
name: Harper, Stuart
name: Landim, Ricardo G.
name: Liccardo, Vincenzo
name: Ma, Yin-Zhe
name: Machado, Telmo
name: Maffei, Bruno
name: Marins, Alessandro
name: Mendes, Milena Martins Machado
name: Merícia, Eduardo
name: Monstein, Christian
name: Motta, Pablo
name: Novaes, Camila P.
name: Otobone, Carlos Henrique do Nascimento
name: Peel, Michael
name: Queiroz, Amilcar
name: Radcliffe, Christopher
name: Remazeilles, Mathieu
name: Ribeiro, Rafael M. G.
name: Sang, Yu
name: Santos, Juliana Fernandes Rossi dos
name: Santos, Larissa
name: Santos, Marcelo V.
name: Shan, Chenxi
name: Silva, Gustavo Bezerra
name: Vieira, Frederico
name: Vieira, Jordany
name: Villela, Thyrso
name: Xiao, Linfeng
name: Yang, Weiqiang
name: Zhang, Jiajun
name: Zhang, Xue
name: Zhu, Zenghao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: BINGO (BAO from Integrated Neutral Gas Observations) is a unique radio telescope designed to map the intensity of neutral hydrogen distribution at cosmological distances, making the first detection of Baryon Acoustic Oscillations (BAO) in the frequency band 980 MHz - 1260 MHz, corresponding to a redshift range $0.127 < z < 0.449$. BAO is one of the most powerful probes of cosmological parameters and BINGO was designed to detect the BAO signal to a level that makes it possible to put new constraints on the equation of state of dark energy. The telescope will be built in Paraíba, Brazil and consists of two $\thicksim$ 40m mirrors, a feedhorn array of 28 horns, and no moving parts, working as a drift-scan instrument. It will cover a $15^{\circ}$ declination strip centered at $\sim δ=-15^{\circ}$, mapping $\sim 5400$ square degrees in the sky. The BINGO consortium is led by University of São Paulo with co-leadership at National Institute for Space Research and Campina Grande Federal University (Brazil). Telescope subsystems have already been fabricated and tested, and the dish and structure fabrication are expected to start in late 2020, as well as the road and terrain preparation.
description: Presented in the BRICS Astronomy Working Group Meeting (Rio de Janeiro, Brazil, 2019) and published in the Anais da Academia Brasileira de Ci\^encias (2021). Updated captions of Figure 3 and data in Table 1, compared to the published version
Graph Based Answer Set Programming Solver Systems
Creators: name: Li, Fang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: I.2.3

description: Answer set programming (ASP) is a popular nonmonotonic-logic based paradigm for knowledge representation and solving combinatorial problems. Computing the answer set of an ASP program is NP-hard in general, and researchers have been investing significant effort to speed it up. The majority of current ASP solvers employ SAT solver-like technology to find these answer sets. As a result, justification for why a literal is in the answer set is hard to produce. There are dependency graph based approaches to find answer sets, but due to the representational limitations of dependency graphs, such approaches are limited. This paper proposes a novel dependency graph-based approach for finding answer sets in which conjunction of goals is explicitly represented as a node which allows arbitrary answer set programs to be uniformly represented. Our representation preserves causal relationships allowing for justification for each literal in the answer set to be elegantly found. In this paper, we explore two different approaches based on the graph representation: bottom-up and top-down. The bottom-up approach finds models by assigning truth values along with the topological order, while the top-down approach generates models starting from the constraints.
description: In Proceedings ICLP 2021, arXiv:2109.07914. arXiv admin note: substantial text overlap with arXiv:2104.01190, arXiv:2109.08297
The Role of the Radial Orbit Instability in Dark Matter Halo Formation and Structure
Creators: name: Bellovary, Jillian M.
name: Dalcanton, Julianne J.
name: Babul, Arif
name: Quinn, Thomas R.
name: Maas, Ryan W.
name: Austin, Crystal G.
name: Williams, Liliya L. R.
name: Barnes, Eric I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: For a decade, N-body simulations have revealed a nearly universal dark matter density profile, which appears to be robust to changes in the overall density of the universe and the underlying power spectrum. Despite its universality, the physical origin of this profile has not yet been well understood. Semi--analytic models by Barnes et al. (2005) have suggested that the density structure of dark matter halos is determined by the onset of the radial orbit instability (ROI). We have tested this hypothesis using N-body simulations of collapsing dark matter halos with a variety of initial conditions. For dynamically cold initial conditions, the resulting halo structures are triaxial in shape, due to the mild aspect of the instability. We examine how variations in initial velocity dispersion affect the onset of the instability, and find that an isotropic velocity dispersion can suppress the ROI entirely, while a purely radial dispersion does not. The quantity sigma^2/vc^2 is a criterion for instability, where regions with sigma^2/vc^2
description: 13 pages, 12 figures, accepted to ApJ
From the Complete Yang Model to Snyder's Model, de Sitter Special Relativity and Their Duality
Creators: name: Wu, Hong-Tu
name: Huang, Chao-Guang
name: Guo, Han-Ying
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: By means of Dirac procedure, we re-examine Yang's quantized space-time model, its relation to Snyder's model, the de Sitter special relativity and their UV-IR duality. Starting from a dimensionless dS_5-space in a 5+1-d Mink-space a complete Yang model at both classical and quantum level can be presented and there really exist Snyder's model, the dS special relativity and the duality.
description: 7 papges
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Millstein, Todd
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2018
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization

description: Front Matter, Table of Contents, Preface, Conference Organization
description: LIPIcs, Vol. 109, 32nd European Conference on Object-Oriented Programming (ECOOP 2018), pages 0:i-0:xx
ВИКОРИСТАННЯ ІМЕРСИВНИХ ТЕХНОЛОГІЙ ПІД ЧАС ПРОВЕДЕННЯ УРОКІВ ГЕОГРАФІЇ
Creators: name: Олексій, Наливайко
name: Юлія, Ієвлєва
name: Катерина, Александрова
Publisher: name: Zenodo
Year: 2021
Subjects: імерсивні технології,
доповнена реальність
віртуальна реальність
сучасна освіта
урок географії
immersive technologies
augmented reality

description: Освіта здатна отримати велику користь із застосування імерсивних технологій, оскільки вони задіюють різні органи чуття людини, що дозволяє одночасно використовуючи різні канали сприйняття інформації. Одним із перспективних напрямків є застосування технологій доповненої реальності і віртуальної реальності, геоінформаційних технологій та 3D моделювання, відеоконтенту 360° під час проведення уроків географії. Education can benefit greatly from the use of immersive technologies, as they involve different human senses, which allows the simultaneous use of different channels of perception of information. One of the promising areas is the use of augmented reality and virtual reality technologies, geoinformation technologies and 3D modeling, 360° video content during geography lessons.
Bembidion perspicuum LeConte 1848
Creators: name: Maddison, David
name: Swanson, Alexander
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Bembidion
Bembidion perspicuum

description: Bembidion perspicuum LeConte, 1848 Ochthedromus perspicuus LeConte, 1848: 466. Type locality “ Rocky Mountains ”. Holotype male, in MCZ (type number 5510), external structure and aedeagus examined. Bembidion acomanum Casey, 1918: 59. Type locality Jemez Springs, New Mexico, so restricted by Lindroth (1975). Lectotype female, designated by Lindroth (1975), in USNM (type number 36916), examined. Bembidion excursum Casey, 1918: 59. Type locality Tucson, Arizona. Holotype female, in USNM (type 36915), examined. This species is known from Texas, Kansas, Colorado, New Mexico, Arizona, Utah, Nevada, California, and Oregon. Its range in México has not been examined. Specimens from northern California and Oregon are dark, with only elytral apices being pale. They are thus very similar in appearance to paler specimens of Bembidion lugubre, from which they are most readily distinguished by genitalic characters.
description: Published as part of Maddison, David & Swanson, Alexander, 2010, A preliminary characterization of Bembidion perspicuum LeConte, with a reclassification of related species (Coleoptera, Carabidae) north of México, pp. 15-31 in ZooKeys 43 (43) on page 27, DOI: 10.3897/zookeys.43.390, http://zenodo.org/record/576656
description: {"references": ["LeConte JL (1848) A descriptive catalogue of the geodephagous Coleoptera inhabiting the United States east of the Rocky Mountains. Annals of the Lyceum of Natural History of New York 4: 173 - 233, 334 - 474.", "Casey TL (1918) A review of the North American Bembidiinae. Memoirs on the Coleoptera 8: 1 - 223.", "Lindroth CH (1975) Designation of holotypes and lectotypes among ground beetles (Coleoptera, Carabidae) described by Thomas L. Casey. The Coleopterists Bulletin 29: 109 - 147."]}
An Integrated Picture of Star Formation, Metallicity Evolution, and Galactic Stellar Mass Assembly
Creators: name: Cowie, L. L.
name: Barger, A. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an integrated study of star formation and galactic stellar mass assembly from z=0.05-1.5 and galactic metallicity evolution from z=0.05-0.9 using a very large and highly spectroscopically complete sample selected by rest-frame NIR bolometric flux in the GOODS-N. We assume a Salpeter IMF and fit Bruzual & Charlot (2003) models to compute the galactic stellar masses and extinctions. We determine the expected formed stellar mass density growth rates produced by star formation and compare them with the growth rates measured from the formed stellar mass functions by mass interval. We show that the growth rates match if the IMF is slightly increased from the Salpeter IMF at intermediate masses (~10 solar masses). We investigate the evolution of galaxy color, spectral type, and morphology with mass and redshift and the evolution of mass with environment. We find that applying extinction corrections is critical when analyzing galaxy colors; e.g., nearly all of the galaxies in the green valley are 24um sources, but after correcting for extinction, the bulk of the 24um sources lie in the blue cloud. We find an evolution of the metallicity-mass relation corresponding to a decrease of 0.21+/-0.03 dex between the local value and the value at z=0.77 in the 1e10-1e11 solar mass range. We use the metallicity evolution to estimate the gas mass of the galaxies, which we compare with the galactic stellar mass assembly and star formation histories. Overall, our measurements are consistent with a galaxy evolution process dominated by episodic bursts of star formation and where star formation in the most massive galaxies (>1e11 solar masses) ceases at z<1.5 because of gas starvation. (Abstract abridged)
description: 48 pages, Accepted by the Astrophysical Journal
The Principle of Relativity and Special Relativity Triple
Creators: name: Guo, Han-Ying
name: Wu, Hong-Tu
name: Zhou, Bin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Based on the principle of relativity and the postulate on universal invariant constants ($c,l$) as well as Einstein's isotropy conditions, three kinds of special relativity form a triple with a common Lorentz group as isotropy group under full Umov-Weyl-Fock-Lorentz transformations among inertial motions.
description: 11 papges
The effective theory of type IIA AdS4 compactifications on nilmanifolds and cosets
Creators: name: Caviezel, Claudio
name: Koerber, Paul
name: Kors, Simon
name: Lust, Dieter
name: Tsimpis, Dimitrios
name: Zagermann, Marco
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider string theory compactifications of the form AdS4 x M6 with orientifold six-planes, where M6 is a six-dimensional compact space that is either a nilmanifold or a coset. For all known solutions of this type we obtain the four-dimensional N=1 low energy effective theory by computing the superpotential, the Kaehler potential and the mass spectrum for the light moduli. For the nilmanifold examples we perform a cross-check on the result for the mass spectrum by calculating it alternatively from a direct Kaluza-Klein reduction and find perfect agreement. We show that in all but one of the coset models all moduli are stabilized at the classical level. As an application we show that all but one of the coset models can potentially be used to bypass a recent no-go theorem against inflation in type IIA theory.
description: 47 pages main text, 28 pages appendix, 3 tables, 7 figures, v2: added references, corrected typos
Putting Yukawa-like Modified Gravity (MOG) on the test in the Solar System
Creators: name: Iorio, Lorenzo
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We deal with a Yukawa-like long-range modified model of gravity (MOG) which recently allowed to successfully accommodate many astrophysical and cosmological features without resorting to dark matter. On Solar System scales MOG predicts retrograde secular precessions of the planetary longitudes of the perihelia \varpi whose existence has been put on the test here by taking the ratios of the observationally estimated Pitjeva's corrections to the standard Newtonian/Einsteinian perihelion precessions for different pairs of planets. It turns out that MOG, in the present form which turned out to be phenomenologically successful on astrophysical scales, is ruled out at more than 3sigma level in the Solar System. If and when other teams of astronomers will independently estimate their own extra-precessions of the perihelia it will be possible to repeat such a test.
description: LaTex2e, 13 pages, 1 table, no figures. To appear in Scholarly Research Exchange (SYREXE). I thank the referees S. Capozziello and H.-S. Zhao