cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Plasmonic modulator optimized by patterning of active layer and tuning permittivity
Creators: name: Babicheva, Viktoriia E.
name: Lavrinenko, Andrei V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study an ultra-compact plasmonic modulator that can be applied in photonic integrated circuits. The modulator is a metal-insulator-metal waveguide with an additional ultra-thin layer of indium tin oxide (ITO). Bias is applied to the multilayer core by means of metal plates that serve as electrodes. External field changes carrier density in the ultra-thin ITO layer, which influences the permittivity. The metal-insulator-metal system possesses a plasmon resonance, and it is strongly affected by changes in the permittivity of the active layer. To improve performance of the structure we propose several optimizations. We examine influence of the ITO permittivity on the modulator's performance and point out appropriate values. We analyze eigenmodes of the waveguide structure and specify the range for its efficient operation. We show that substituting the continuous active layer by a one-dimension periodic stripes increases transmittance through the device and keeps the modulator's performance at the same level. The dependence on the pattern size and filling factor of the active material is analyzed and optimum parameters are found. Patterned ITO layers allow us to design a Bragg grating inside the waveguide. The grating can be turned on and off, thus modulating reflection from the structure. The considered structure with electrical control possesses a high performance and can efficiently work as a plasmonic component in nanophotonic architectures.
description: Optics Communications (2012)
Supplementary document for Relief of Tumor Hypoxia Using a Nanoenzyme Amplifies NIR-II Photoacoustic-Guided Photothermal Therapy - 6753824.pdf
Creators: name: Xue, Qiang
name: Zeng, Silue
name: Ren, Yaguang
name: Pan, Yingying
name: Chen, Jianhai
name: chen, ningbo
name: Wong, Kenneth Kin-Yip
name: Song, Liang
name: fang, chihua
name: Guo, Jinhan
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplemental Material
Higher quasi-categories vs higher Rezk spaces
Creators: name: Ara, Dimitri
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Topology (math.AT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18D05, 55U40

description: We introduce a notion of n-quasi-categories as fibrant objects of a model category structure on presheaves on Joyal's n-cell category Θ_n. Our definition comes from an idea of Cisinski and Joyal. However, we show that this idea has to be slightly modified to get a reasonable notion. We construct two Quillen equivalences between the model category of n-quasi-categories and the model category of Rezk Θ_n-spaces showing that n-quasi-categories are a model for (\infty, n)-categories. For n = 1, we recover the two Quillen equivalences defined by Joyal and Tierney between quasi-categories and complete Segal spaces.
description: 44 pages, v2: terminology changed (see Remark 5.27), Corollary 7.5 added, appendix A added, references added, v3: reorganization of Sections 5 and 6, more informal comments, new section characterizing strict n-categories whose nerve is an n-quasi-category, numbering has changed
Modified perturbation theory for angular distribution in W-pair production
Creators: name: Nekrasov, M. L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the capabilities of the modified perturbation theory (MPT) for description of $W$-pair production and decay in $e^{+} e^{-}$ annihilation. In a model with Dyson-resummed propagators of unstable particles, we calculate even and odd contributions to the distribution in the cosine of the $W^{-}$ production angle relative to the $e^{-}$ beam. On comparing the results of calculations in the NNLO approximation of MPT with the exact results in the model, a coincidence of outcomes at the ILC energies is detected at the per-mille level.
description: 13 pages, 3 figures, matches MPLA version
title: Рождество в произведениях Ф.М. Достоевского и Чарльза Диккенса (по материалам произведений из цикла Ч. Диккенса «Рождественские повести» и рассказа Ф.М. Достоевского «Мальчик у Христа на ёлке»)
Creators: name: Смирнова, Е. А.
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: Данная статья посвящена сравнению рождественских произведений Ф.М. Достоевского и Чарльза Диккенса. В ней проанализированы сходства и различия сборника «Рождественские повести» Диккенса и рассказа «Мальчик у Христа на ёлке» Достоевского. Работа поможет читателям больше узнать о творчестве великих писателей и
взаимосвязи их произведений.
Vector-tensor supermultiplets in AdS and supergravity
Creators: name: Kuzenko, Sergei M.
name: Novak, Joseph
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In N = 2 Poincare supersymmetry in four space-time dimensions, there exist off-shell supermultiplets with intrinsic central charge, including the important examples of the Fayet-Sohnius hypermultiplet, the linear and the nonlinear vector-tensor (VT) multiplets. One can also define similar supermultiplets in the context of N = 2 anti-de Sitter (AdS) supersymmetry, although the origin of the central charge becomes somewhat obscure. In this paper we develop a general setting for N = 2 AdS supersymmetric theories with central charge. We formulate a supersymmetric action principle in N = 2 AdS superspace and then reformulate it in terms of N = 1 superfields. We prove that N = 2 AdS supersymmetry does not allow existence of a linear VT multiplet. For the nonlinear VT multiplet, we derive consistent superfield constraints in the presence of any number of N = 2 Yang-Mills vector multiplets, give the supersymmetric action and elaborate on the N = 1 superfield and component descriptions of the theory. Our description of the nonlinear VT multiplet in AdS is then lifted to N = 2 supergravity. Moreover, we derive consistent superfield constraints and Lagrangian that describe the linear VT multiplet in N = 2 supergravity in the presence of two vector multiplets, one of which gauges the central charge. These supergravity constructions thus provide the first superspace formulation for the component results derived in arXiv:hep-th/9710212. We also construct higher-derivative couplings of the VT multiplet to any number of N = 2 tensor multiplets.
description: LaTeX, 36 pages. V2: References added, section 6 extended. V3: Typos corrected. Published version: Typos corrected, references updated
Accuracy guaranties for $\ell_1$ recovery of block-sparse signals
Creators: name: Juditsky, Anatoli
name: Karzan, Fatma Kılınç
name: Nemirovski, Arkadi
name: Polyak, Boris
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistics Theory (math.ST)
subject: Optimization and Control (math.OC)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We introduce a general framework to handle structured models (sparse and block-sparse with possibly overlapping blocks). We discuss new methods for their recovery from incomplete observation, corrupted with deterministic and stochastic noise, using block-$\ell_1$ regularization. While the current theory provides promising bounds for the recovery errors under a number of different, yet mostly hard to verify conditions, our emphasis is on verifiable conditions on the problem parameters (sensing matrix and the block structure) which guarantee accurate recovery. Verifiability of our conditions not only leads to efficiently computable bounds for the recovery error but also allows us to optimize these error bounds with respect to the method parameters, and therefore construct estimators with improved statistical properties. To justify our approach, we also provide an oracle inequality, which links the properties of the proposed recovery algorithms and the best estimation performance. Furthermore, utilizing these verifiable conditions, we develop a computationally cheap alternative to block-$\ell_1$ minimization, the non-Euclidean Block Matching Pursuit algorithm. We close by presenting a numerical study to investigate the effect of different block regularizations and demonstrate the performance of the proposed recoveries.
description: Published in at http://dx.doi.org/10.1214/12-AOS1057 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Attractors, Universality and Inflation
Creators: name: Downes, Sean
name: Dutta, Bhaskar
name: Sinha, Kuver
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Studies of the initial conditions for inflation have conflicting predictions from exponential suppression to inevitability. At the level of phase space, this conflict arises from the competing intuitions of CPT invariance and thermodynamics. After reviewing this conflict, we enlarge the ensemble beyond phase space to include scalar potential data. We show how this leads to an important contribution from inflection point inflation, enhancing the likelihood of inflation to an inverse cubic power law. In the process, we emphasize the attractor dynamics of the gravity-scalar system and the existence of universality classes from inflection point inflation. Finally, we comment on the predictivity of inflation in light of these results.
description: 32 pages, 8 figures. Typos and figures fixed
Social interactions and well-being : the surprising power of weak ties
Creators: name: Sandstrom, Gillian M.
Publisher: name: University of British Columbia
Year: 2013

description: Can acquaintances contribute to our happiness, or are they inconsequential compared to close friends and family? This dissertation expands the focus of study within social psychology, which has been almost exclusively directed towards strong ties, to include examination of weak ties (i.e., acquaintances). A broad sample of Americans reported the number of weak ties they had in their social network, and rated their own happiness (Study 1). People with more weak tie relationships reported being happier. Switching the focus from social relationships to social interactions, students kept track of their interactions with weak tie classmates during a particular class, and reported their happiness after class (Study 2). During classes when they had more interactions with weak tie classmates than usual, they were happier. Expanding the scope to include all daily interactions, students kept track of their interactions with weak ties (Study 3). As before, on days when they had more interactions with weak ties than usual, they were happier. Given that people trim their social networks as they age, and interact with fewer acquaintances starting in their late teens, we replicated this study with a community sample (Study 4). People again reported positive consequences on days when they interacted with more weak ties. The last two studies were experimental, rather than correlational. In a field study at Starbucks, people who were assigned to have a genuine social interaction with the cashier, thus treating them more like a weak tie than a stranger, experienced a more positive mood than people who were assigned to have an efficient interaction with the cashier (Study 5). Finally, participants were instructed to increase the number of daily weak tie interactions for ten days, to test whether this would cause sustained increases in happiness (Study 6). Although people experienced an increase in flourishing, and reported a somewhat greater decrease in loneliness over time than people in the control condition, there were no broad changes in happiness or belonging. These studies – the first in social psychology to explicitly focus on weak ties – consistently find a relationship between weak ties and happiness.
Lattice QCD Calculation of Nuclear Parity Violation
Creators: name: Wasem, Joseph
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present the first lattice QCD calculation of the leading-order momentum-independent parity violating coupling between pions and nucleons, $h_{π{NN}}^1$. The calculation performs measurements on dynamical anisotropic clover gauge configurations, with a spatial extent of $L\sim2.5$ fm, a spatial lattice spacing of $a_s\sim0.123$ fm, and a pion mass of $m_π\sim389$ MeV. While this first calculation does not include non-perturbative renormalization of the bare parity-violating operators, a chiral extrapolation to the physical pion mass, or contributions from disconnected (quark-loop) diagrams, these are expected to result in systematic errors within the quoted statistical error. We find a contribution from the `connected' diagrams of $h_{π{NN}}^{1,con}=(1.099\pm0.505^{+0.058}_{-0.064})\times10^{-7}$, consistent with current experimental bounds and previous model-dependent theoretical predictions.
description: 5 pg., 3 fig
title: Средства образной номинации в формировании образа политика
Creators: name: Тазеева, Д. Д.
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: В данной статье рассматривается феномен образной номинации как инструмента, используемого автором газетной статьи для формирования образа политического деятеля. На материале статей из электронных изданий The Guardian и CNN проанализированы случаи употребления средств образной номинации, основная функция
которых заключается в характеристике личности или деятельности политика. Даны комментарии по их переводу.
Large scale Gd-beta-diketonate based organic liquid scintillator production for antineutrino detection
Creators: name: Aberle, C.
name: Buck, C.
name: Gramlich, B.
name: Hartmann, F. X.
name: Lindner, M.
name: Schönert, S.
name: Schwan, U.
name: Wagner, S.
name: Watanabe, H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Over the course of several decades, organic liquid scintillators have formed the basis for successful neutrino detectors. Gadolinium-loaded liquid scintillators provide efficient background suppression for electron antineutrino detection at nuclear reactor plants. In the Double Chooz reactor antineutrino experiment, a newly developed beta-diketonate gadolinium-loaded scintillator is utilized for the first time. Its large scale production and characterization are described. A new, light yield matched metal-free companion scintillator is presented. Both organic liquids comprise the target and "Gamma Catcher" of the Double Chooz detectors.
description: 16 pages, 4 figures, 5 tables
Supplementary document for Fast Fourier ptychographic quantitative phase microscopy for in vitro label-free imaging - 6735182.pdf
Creators: name: Wu, Ruofei
name: LUO, ZICONG
name: yan, Lisong
name: Liu, Mingdi
name: Zhang, Haiqi
name: Zhen, Junrui
name: Luo, Jiaxiong
name: Wu, Yanxiong
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Revised_SupplementaryMat
Supplementary document for Fast Fourier ptychographic quantitative phase microscopy for in vitro label-free imaging - 6743823.pdf
Creators: name: Wu, Ruofei
name: LUO, ZICONG
name: yan, Lisong
name: Liu, Mingdi
name: Zhang, Haiqi
name: Zhen, Junrui
name: Luo, Jiaxiong
name: Wu, Yanxiong
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Revised_SupplementaryMat
Linear regression for numeric symbolic variables: an ordinary least squares approach based on Wasserstein Distance
Creators: name: Irpino, Antonio
name: Verde, Rosanna
Publisher: name: arXiv
Year: 2012
Subjects: subject: Methodology (stat.ME)
subject: Other Statistics (stat.OT)
subject: FOS: Computer and information sciences

description: In this paper we present a linear regression model for modal symbolic data. The observed variables are histogram variables according to the definition given in the framework of Symbolic Data Analysis and the parameters of the model are estimated using the classic Least Squares method. An appropriate metric is introduced in order to measure the error between the observed and the predicted distributions. In particular, the Wasserstein distance is proposed. Some properties of such metric are exploited to predict the response variable as direct linear combination of other independent histogram variables. Measures of goodness of fit are discussed. An application on real data corroborates the proposed method.
title: Allomorphy and affixation in morphological processing
title: a cross-modal priming study with late bilinguals
titleType: Subtitle
Creators: name: Jacob, Gunnar
name: Fleischhauer, Elisabeth
name: Clahsen, Harald
Publisher: name: Universität Potsdam
Year: 2019

description: This study presents results from a cross-modal priming experiment investigating inflected verb forms of German. A group of late learners of German with Russian as their native language (L1) was compared to a control group of German L1 speakers. The experiment showed different priming patterns for the two participant groups. The L1 German data yielded a stem-priming effect for inflected forms involving regular affixation and a partial priming effect for irregular forms irrespective of stem allomorphy. By contrast, the data from the late bilinguals showed reduced priming effects for both regular and irregular forms. We argue that late learners rely more on lexically stored inflected word forms during word recognition and less on morphological parsing than native speakers.
description: Postprints der Universität Potsdam : Humanwissenschaftliche Reihe, 532
title: «Новгородские гости» Любека в зарубежной историографии
Creators: name: Ушаков, А. В.
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: Несмотря на то, что изучение торговой гильдии «новгородских гостей» Любека началось полтора века назад, купцы корпорации не так часто попадали во внимание исследователей. Так как отечественные ганзееведы не касались в своих работах предпринимательской деятельности гильдии, обращение к выводам зарубежных
специалистов позволяет определить специфику восприятия «новгородских гостей» в системе русско-ганзейских отношений, а также определить перспективы для дальнейшего изучения гильдии.
title: Object and action naming in Russian- and German- speaking monolingual and bilingual children*
Creators: name: Klassert, Annegret
name: Gagarina, Natalia
name: Kauschke, Christina
Publisher: name: Universität Potsdam
Year: 2019

description: The present study investigates the influence of word category on naming performance in two populations: bilingual and monolingual children. The question is whether and, if so, to what extent monolingual and bilingual children differ with respect to noun and verb naming and whether a noun bias exists in the lexical abilities of bilingual children. Picture naming of objects and actions by Russian-German bilingual children (aged 4-7 years) was compared to age-matched monolingual children. The results clearly demonstrate a naming deficit of bilingual children in comparison to monolingual children that increases with age. Noun learning is more fragile in bilingual contexts than is verb learning. In bilingual language acquisition, nouns do not predominate over verbs as much as is seen in monolingual German and Russian children. The results are discussed with respect to semantic-conceptual aspects and language-specific features of nouns and verbs, and the impact of input on the acquisition of these word categories.
description: Postprints der Universität Potsdam : Humanwissenschaftliche Reihe, 531
Classification of Arbitrary Multipartite Entangled States under Local Unitary Equivalence
Creators: name: Li, Jun-Li
name: Qiao, Cong-Feng
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We propose a practical method for finding the canonical forms of arbitrary dimensional multipartite entangled states, either pure or mixed. By extending the technique developed in one of our recent works, the canonical forms for the mixed $N$-partite entangled states are constructed where they have inherited local unitary symmetries from their corresponding $N+1$ pure state counterparts. A systematic scheme to express the local symmetries of the canonical form is also presented, which provides a feasible way of verifying the local unitary equivalence for two multipartite entangled states.
description: 22 pages; published in J. Phys. A: Math. Theor
MSSM Higgs Bosons at The LHC
Creators: name: Christensen, Neil
name: Han, Tao
name: Su, Shufang
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Accepting the existence of a SM-like Higgs boson in the range 123GeV-127GeV as indicated by the observed ga,ga events, there are two distinct regions left in the Minimal Supersymmetric (SUSY) Standard Model (MSSM) Higgs sector: (a) the lighter CP-even Higgs boson SM-like and the non-SM-like Higgs bosons all heavy and nearly degenerate above 300GeV; (b) the heavier CP-even Higgs boson being SM-like and the neutral non-SM-like Higgs bosons all nearly degenerate around 100GeV (a non-decoupling region). Due to the strong correlation between the Higgs decays to W+W- and to ga,ga predicted in the MSSM, the deficit of a W+W- final state signal would be in direct conflict with the ga,ga peak. If we consider W+W- on its own, the absence of the W+W- signal would imply that the SM-like Higgs boson has reduced coupling to W+-, and that the other non-SM-like Higgs bosons should not be too heavy and do not decouple. If both the ga,ga excess and the absence of W+W- continue, new physics beyond the MSSM will be required. A similar correlation exists between the W+W- and tau+tau- channels: a reduced W+W- channel would force the tau+tau- channel to be larger. Future searches for the SM-like Higgs boson at the LHC will provide critical tests for the MSSM prediction. We emphasize the potential importance of the electroweak processes pp->H+H-, H+-A0, which are independent of the SUSY parameters except for their masses. In addition, there may be sizable contributions from pp->H+-h0, A0h0 and W+-H0, ZH0 in the non-decoupling region, which may serve to discriminate the model parameters. We vary the relevant SUSY parameters in a broad range and demonstrate the correlations and constraints on these parameters and associated SUSY particles.
description: 33 pages, 14 figures, minor revisions for journal
title: Инвектива в речи беса (на материале романа Ф.М. Достоевского «Бесы»)
Creators: name: Федорова, Л. П.
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: В работе рассматриваются особенности речевого поведения одного из главных героев романа Ф.М. Достоевского «Бесы» − Петра Верховенского. Особое внимание уделяется проблеме инвективизации речи и факторам, влияющим на выбор инвективы, при этом выявляются наиболее частотные инвективные слова в дискурсе персонажа.
OPE for null Wilson loops and open spin chains
Creators: name: Belitsky, A. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Maximal helicity-violating scattering amplitudes in N=4 supersymmetric Yang-Mills theory are dual to Wilson loops on closed null polygons. We perform their operator product expansion analysis in two-dimensional kinematics in the soft-collinear approximation which corresponds to the case when some light-cone distances vanish. We construct the expansion in terms of multi-particle "heavy"-light operators, where the "heavy" fields are identified with the Wilson lines defining the OPE channel and the light fields emerge from the curvature of the contour. The correlation function of these define the remainder function. We study the dilatation operator for these operators at one loop order and find that it corresponds to a non-compact open spin chain. This provides an alternative view on elementary excitations propagating on the GKP string at weak coupling, which now correspond to particles traveling along an open spin chain. The factorized structure of the Wilson loop in the soft limit allows one to represent the two-loop correction to the octagon Wilson loop as a convolution formula and find the corresponding remainder function.
description: 10 pages, 2 figures
title: Global patterns in Earth’s dynamic topography since the Jurassic
title: the role of subducted slabs
titleType: Subtitle
Creators: name: Rubey, Michael
name: Brune, Sascha
name: Heine, Christian
name: Davies, D. Rhodri
name: Williams, Simon E.
name: Müller, R. Dietmar
Publisher: name: Universität Potsdam
Year: 2019

description: We evaluate the spatial and temporal evolution of Earth's long-wavelength surface dynamic topography since the Jurassic using a series of high-resolution global mantle convection models. These models are Earth-like in terms of convective vigour, thermal structure, surface heat-flux and the geographic distribution of heterogeneity. The models generate a degree-2-dominated spectrum of dynamic topography with negative amplitudes above subducted slabs (i.e. circum-Pacific regions and southern Eurasia) and positive amplitudes elsewhere (i.e. Africa, north-western Eurasia and the central Pacific). Model predictions are compared with published observations and subsidence patterns from well data, both globally and for the Australian and southern African regions. We find that our models reproduce the long-wavelength component of these observations, although observed smaller-scale variations are not reproduced. We subsequently define "geodynamic rules" for how different surface tectonic settings are affected by mantle processes: (i) locations in the vicinity of a subduction zone show large negative dynamic topography amplitudes; (ii) regions far away from convergent margins feature long-term positive dynamic topography; and (iii) rapid variations in dynamic support occur along the margins of overriding plates (e.g. the western US) and at points located on a plate that rapidly approaches a subduction zone (e.g. India and the Arabia Peninsula). Our models provide a predictive quantitative framework linking mantle convection with plate tectonics and sedimentary basin evolution, thus improving our understanding of how subduction and mantle convection affect the spatio-temporal evolution of basin architecture.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, 623
Probabilities of exoplanet signals from posterior samplings
Creators: name: Tuomi, Mikko
name: Jones, Hugh R. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Computation (stat.CO)
subject: Methodology (stat.ME)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Estimating the marginal likelihoods is an essential feature of model selection in the Bayesian context. It is especially crucial to have good estimates when assessing the number of planets orbiting stars when the models explain the noisy data with different numbers of Keplerian signals. We introduce a simple method for approximating the marginal likelihoods in practice when a statistically representative sample from the parameter posterior density is available. We use our truncated posterior mixture estimate to receive accurate model probabilities for models with differing number of Keplerian signals in radial velocity data. We test this estimate in simple scenarios to assess its accuracy and rate of convergence in practice when the corresponding estimates calculated using deviance information criterion can be applied to receive trustworthy results for reliable comparison. As a test case, we determine the posterior probability of a planet orbiting HD 3651 given Lick and Keck radial velocity data. The posterior mixture estimate appears to be a simple and an accurate way of calculating marginal integrals from posterior samples. We show, that it can be used to estimate the marginal integrals reliably in practice, given a suitable selection of parameter λ, that controls its accuracy and convergence rate. It is also more accurate than the one block Metropolis-Hastings estimate and can be used in any application because it is not based on assumptions on the nature of the posterior density nor the amount of data or parameters in the statistical model.
description: 7 pages, 2 Figs. Accepted for publication in the Astronomy and Astrophysics
Quadrupole Excitation in Tunnel Splitting Oscillation in Nano-Particle $Mn_{12}$
Creators: name: Yousefi, Yousef
name: Muminov, Khikmat Kh.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We analyze the interference between tunneling paths that occurs for a spin system with special Hamiltonian both for dipole and quadrupole excitation. Using an instanton approach, we find that as the strength of the second-order transverse anisotropy is increased, the tunnel splitting for both excitations are modulated, with zeros occurring periodically and the number of quenching points for quadrupole excitation decreases. This effect results from the interference of four tunneling paths connecting easy-axis spin orientations and occurs in the absence of any magnetic field.
description: arXiv admin note: This paper has been withdrawn by arXiv administrators: v2 is withdrawn because it is unrelated to v1 and thus an inappropriate replacement. v1 is withdrawn because of excessive unattributed use of the work of others
title: Bumps in river profiles
title: uncertainty assessment and smoothing using quantile regression techniques
titleType: Subtitle
Creators: name: Schwanghart, Wolfgang
name: Scherler, Dirk
Publisher: name: Universität Potsdam
Year: 2019

description: The analysis of longitudinal river profiles is an important tool for studying landscape evolution. However, characterizing river profiles based on digital elevation models (DEMs) suffers from errors and artifacts that particularly prevail along valley bottoms. The aim of this study is to characterize uncertainties that arise from the analysis of river profiles derived from different, near-globally available DEMs. We devised new algorithms quantile carving and the CRS algorithm - that rely on quantile regression to enable hydrological correction and the uncertainty quantification of river profiles. We find that globally available DEMs commonly overestimate river elevations in steep topography. The distributions of elevation errors become increasingly wider and right skewed if adjacent hillslope gradients are steep. Our analysis indicates that the AW3D DEM has the highest precision and lowest bias for the analysis of river profiles in mountainous topography. The new 12m resolution TanDEM-X DEM has a very low precision, most likely due to the combined effect of steep valley walls and the presence of water surfaces in valley bottoms. Compared to the conventional approaches of carving and filling, we find that our new approach is able to reduce the elevation bias and errors in longitudinal river profiles.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, 624
title: Авторское начало в текстах масс-медиа (на материале публикаций «53 новости»)
Creators: name: Фомина, А. С.
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: Проявление авторской позиции в текстах масс-медиа было и всегда остается важным аспектом для получателя. На сегодняшний день большинство СМИ стремятся внедрить в свои новостные сообщения как можно больше кодов для передачи информации. Существует большая разница между автором медиатекста и автором какого-либо другого текста. Согласно трем важнейшим параметрам определения авторского «я» в текстах СМИ, удалось проследить, какие тексты преобладают в региональном интернет-издании «53 новости», и кем выступает автор для своей аудитории.
title: A network-based detection scheme for the jet stream core
Creators: name: Molnos, Sonja
name: Mamdouh, Tarek
name: Petri, Stefan
name: Nocke, Thomas
name: Weinkauf, Tino
name: Coumou, Dim
Publisher: name: Universität Potsdam
Year: 2019

description: The polar and subtropical jet streams are strong upper-level winds with a crucial influence on weather throughout the Northern Hemisphere midlatitudes. In particular, the polar jet is located between cold arctic air to the north and warmer subtropical air to the south. Strongly meandering states therefore often lead to extreme surface weather.

Some algorithms exist which can detect the 2-D (latitude and longitude) jets' core around the hemisphere, but all of them use a minimal threshold to determine the subtropical and polar jet stream. This is particularly problematic for the polar jet stream, whose wind velocities can change rapidly from very weak to very high values and vice versa.

We develop a network-based scheme using Dijkstra's shortest-path algorithm to detect the polar and subtropical jet stream core. This algorithm not only considers the commonly used wind strength for core detection but also takes wind direction and climatological latitudinal position into account. Furthermore, it distinguishes between polar and subtropical jet, and between separate and merged jet states.

The parameter values of the detection scheme are optimized using simulated annealing and a skill function that accounts for the zonal-mean jet stream position (Rikus, 2015). After the successful optimization process, we apply our scheme to reanalysis data covering 1979-2015 and calculate seasonal-mean probabilistic maps and trends in wind strength and position of jet streams.

We present longitudinally defined probability distributions of the positions for both jets for all on the Northern Hemisphere seasons. This shows that winter is characterized by two well-separated jets over Europe and Asia (ca. 20 degrees W to 140 degrees E). In contrast, summer normally has a single merged jet over the western hemisphere but can have both merged and separated jet states in the eastern hemisphere.

With this algorithm it is possible to investigate the position of the jets' cores around the hemisphere and it is therefore very suitable to analyze jet stream patterns in observations and models, enabling more advanced model-validation.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, 625
Dark Matter Detection with Polarized Detectors
Creators: name: Chiang, Chi-Ting
name: Kamionkowski, Marc
name: Krnjaic, Gordan Z.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the prospects to use polarized dark-matter detectors to discriminate between various dark-matter models. If WIMPs are fermions and participate in parity-violating interactions with ordinary matter, then the recoil-direction and recoil-energy distributions of nuclei in detectors will depend on the orientation of the initial nuclear spin with respect to the velocity of the detector through the Galactic halo. If, however, WIMPS are scalars, the only possible polarization-dependent interactions are extremely velocity-suppressed and, therefore, unobservable. Since the amplitude of this polarization modulation is fixed by the detector speed through the halo, in units of the speed of light, exposures several times larger than those of current experiments will be required to be probe this effect.
description: 4 pages, 5 figures, Corrected some errors and clarified some issues. Some new references added
Discovery of Two Very Wide Binaries with Ultracool Companions and a New Brown Dwarf at the L/T Transition
Creators: name: Muzic, Koraljka
name: Radigan, Jacqueline
name: Jayawardhana, Ray
name: Ivanov, Valentin D.
name: Faherty, Jacqueline K.
name: Kurtev, Radostin G.
name: Nunez, Alejandro
name: Boffin, Henri M. J.
name: Hainaut, Olivier
name: Cruz, Kelle
name: Jones, David
name: Metchev, Stanimir
name: Tyndall, Amy
name: Borissova, Jura
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the discovery and spectroscopic follow-up of a nearby late-type L dwarf (2M0614+3950), and two extremely wide very-low-mass binary systems (2M0525-7425AB and 2M1348-1344AB), resulting from our search for common proper motion pairs containing ultracool components in the Two Micron All Sky Survey (2MASS) and the Wide-field Infrared Survey Explorer (WISE) catalogs. The near-infrared spectrum of 2M0614+3950 indicates a spectral type L$9 \pm 1$ object residing at a distance of $26.0 \pm 1.8$ pc. The optical spectrum of 2M0525-7425A reveals an M$3.0 \pm 0.5$ dwarf primary, accompanied by a secondary previously classified as L2. The system has an angular separation of $\sim 44"$, equivalent to $\sim 2000 $AU at distance of $46.0 \pm 3.0$ pc. Using optical and infrared spectra, respectively, we classify the components of 2M1348-1344AB as M$4.5 \pm 0.5$ and T$5.5 \pm 1$. The angular separation of $\sim 68"$ is equivalent to $\sim 1400 $AU at a distance of $20.7 \pm 1.4$ pc. 2M1348-1344AB is one of only six very wide (separation $>$ 1000 AU) systems containing late T dwarfs known to date.
description: Astronomical Journal, 2012, in press
title: Allelic variants of OsSUB1A cause differential expression of transcription factor genes in response to submergence in rice
Creators: name: Sharma, Niharika
name: Dang, Trang Minh
name: Singh, Namrata
name: Ruzicic, Slobodan
name: Müller-Röber, Bernd
name: Baumann, Ute
name: Heuer, Sigrid
Publisher: name: Universität Potsdam
Year: 2019

description: Background: Flooding during seasonal monsoons affects millions of hectares of rice-cultivated areas across Asia. Submerged rice plants die within a week due to lack of oxygen, light and excessive elongation growth to escape the water. Submergence tolerance was first reported in an aus-type rice landrace, FR13A, and the ethylene-responsive transcription factor (TF) gene SUB1A-1 was identified as the major tolerance gene. Intolerant rice varieties generally lack
the SUB1A gene but some intermediate tolerant varieties, such as IR64, carry the allelic variant SUB1A-2. Differential effects of the two alleles have so far not been addressed. As a first step, we have therefore quantified and compared the expression of nearly 2500 rice TF genes between IR64 and its derived tolerant near isogenic line IR64-Sub1, which carries the SUB1A-1 allele. Gene expression was studied in internodes, where the main difference in expression between
the two alleles was previously shown.
Results: Nineteen and twenty-six TF genes were identified that responded to submergence in IR64 and IR64-Sub1,
respectively. Only one gene was found to be submergence-responsive in both, suggesting different regulatory pathways under submergence in the two genotypes. These differentially expressed genes (DEGs) mainly included MYB, NAC, TIFY and Zn-finger TFs, and most genes were downregulated upon submergence. In IR64, but not in IR64-Sub1,
SUB1B and SUB1C, which are also present in the Sub1 locus, were identified as submergence responsive. Four TFs were not submergence responsive but exhibited constitutive, genotype-specific differential expression. Most of the identified submergence responsive DEGs are associated with regulatory hormonal pathways, i.e. gibberellins (GA), abscisic acid (ABA), and jasmonic acid (JA), apart from ethylene. An in-silico promoter analysis of the two genotypes revealed the
presence of allele-specific single nucleotide polymorphisms, giving rise to ABRE, DRE/CRT, CARE and Site II cis-elements, which can partly explain the observed differential TF gene expression.
Conclusion: This study identified new gene targets with the potential to further enhance submergence tolerance in rice and provides insights into novel aspects of SUB1A-mediated tolerance.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, 619
Новое о ювелирном ремесле Киева Х в.
Creators: name: Орлов, Руслан
name: С. Р., Кілієвич
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 430101
subject: Archaeological science

description: Килиевич С.Р., Орлов Р.С. Новое о ювелирном ремесле Киева Х в. - Археологические исследования Киева 1978-19843гг. - К., 1985. - С.61-77.New information about the jewelry craft of Kyiv in the 10th century.
title: Rapid evolution of symbiont-­mediated resistance compromises biological control of aphids by parasitoids
Creators: name: Käch, Heidi
name: Mathé-Hubert, Hugo
name: Dennis, Alice B.
name: Vorburger, Christoph
Publisher: name: Universität Potsdam
Year: 2019

description: There is growing interest in biological control as a sustainable and environmentally friendly way to control pest insects. Aphids are among the most detrimental agricultural pests worldwide, and parasitoid wasps are frequently employed for their control. The use of asexual parasitoids may improve the effectiveness of biological control because only females kill hosts and because asexual populations have a higher growth rate than sexuals. However, asexuals may have a reduced capacity to track evolutionary change in their host populations. We used a factorial experiment to compare the ability of sexual and asexual populations of the parasitoid Lysiphlebus fabarum to control caged populations of black bean aphids (Aphis fabae) of high and low clonal diversity. The aphids came from a natural population, and one-­third of the aphid clones harbored Hamiltonella defensa, a heritable bacterial endosymbiont that increases resistance to parasitoids. We followed aphid and parasitoid population dynamics for 3 months but found no evidence that the reproductive mode of parasitoids affected their effectiveness as biocontrol agents, independent of host clonal diversity. Parasitoids failed to control aphids in most cases, because their introduction resulted in strong selection for clones protected by H. defensa. The increasingly resistant aphid populations escaped control by parasitoids, and we even observed parasitoid extinctions in many cages. The rapid evolution of symbiont-­conferred resistance in turn imposed selection on parasitoids. In cages where asexual parasitoids persisted until the end of the experiment, they became dominated by a single genotype able to overcome the protection provided by H. defensa. Thus, there was evidence for parasitoid counteradaptation, but it was generally too slow for parasitoids to regain control over aphid populations. It appears that when pest aphids possess defensive symbionts, the presence of parasitoid genotypes able to overcome symbiont-­conferred resistance is more important for biocontrol success than their reproductive mode.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, 620
Modeling dependencies in multivariate data
Creators: name: Talhouk, Aline
Publisher: name: University of British Columbia
Year: 2013

description: In multivariate regression, researchers are interested in modeling a correlated multivariate response variable as a function of covariates. The response of interest can be multidimensional; the correlation between the elements of the multivariate response can be very complex. In many applications, the association between the elements of the multivariate response is typically treated as a nuisance parameter. The focus is on estimating efficiently the regression coefficients, in order to study the average change in the mean response as a function of predictors. However, in many cases, the estimation of the covariance and, where applicable, the temporal dynamics of the multidimensional response is the main interest, such as the case in finance, for example. Moreover, the correct specification of the covariance matrix is important for the efficient estimation of the regression coefficients. These complex models usually involve some parameters that are static and some dynamic. Until recently, the simultaneous estimation of dynamic and static parameters in the same model has been difficult. The introduction of particle MCMC algorithms by Andrieu and Doucet (2002) has allowed for the possibility of considering such models. In this thesis, we propose a general framework for jointly estimating the covariance matrix of multivariate data as well as the regression coefficients. This is done under different settings, for different dimensions and measurement scales.
The Euler-Maruyama approximation for the absorption time of the CEV diffusion
Creators: name: Chigansky, Pavel
name: Klebaner, Fima C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 60H10, 60H35, 60F17, 91G60

description: A standard convergence analysis of the simulation schemes for the hitting times of diffusions typically requires non-degeneracy of their coefficients on the boundary, which excludes the possibility of absorption. In this paper we consider the CEV diffusion from the mathematical finance and show how a weakly consistent approximation for the absorption time can be constructed, using the Euler-Maruyama scheme.
DC readout experiment in Enhanced LIGO
Creators: name: Fricke, Tobin T.
name: Smith-Lefebvre, Nicolas D.
name: Abbott, Richard
name: Adhikari, Rana
name: Dooley, Katherine L.
name: Evans, Matthew
name: Fritschel, Peter
name: Frolov, Valery V.
name: Kawabe, Keita
name: Kissel, Jeffrey S.
name: Slagmolen, Bram J. J.
name: Waldman, Sam J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The two 4 km long gravitational wave detectors operated by the Laser Interferometer Gravitational-wave Observatory (LIGO) were modified in 2008 to read out the gravitational wave channel using the DC readout form of homodyne detection and to include an optical filter cavity at the output of the detector. As part of the upgrade to Enhanced LIGO, these modifications replaced the radio-frequency (RF) heterodyne system used previously. We describe the motivations for and the implementation of DC readout and the output mode cleaner in Enhanced LIGO. We present characterizations of the system, including measurements and models of the couplings of the noises from the laser source to the gravitational wave readout channel. We show that noise couplings using DC readout are improved over those for RF readout, and we find that the achieved shot-noise-limited sensitivity is consistent with modeled results.