cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ion acceleration at two collisionless shocks in a multicomponent plasma
Creators: name: Kumar, Rajesh
name: Sakawa, Youichi
name: Sano, Takayoshi
name: Dohl, Leonard N. K.
name: Woolsey, Nigel
name: Morace, Alessio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Intense laser-plasma interactions are an essential tool for the laboratory study of ion acceleration at a collisionless shock. With two-dimensional particle-in-cell calculations of a multicomponent plasma we observe two electrostatic collisionless shocks at two distinct longitudinal positions when driven with a linearly-polarized laser at normalized laser vector potential a0 that exceeds 10. Moreover, these shocks, associated with protons and carbon ions, show a power-law dependence on a0 and accelerate ions to different velocities in an expanding upstream with higher flux than in a single-component hydrogen or carbon plasma. This results from an electrostatic ion two-stream instability caused by differences in the charge-to-mass ratio of different ions. Particle acceleration in collisionless shocks in multicomponent plasma are ubiquitous in space and astrophysics, and these calculations identify the possibility for studying these complex processes in the laboratory.
Plasmonics response of a nanorod in the vicinity of a metallic surface: local approach with analytical solution
Creators: name: Vasilevskiy, I. M.
name: Peres, N. M. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this paper we present an analytical solution for the eigenmodes and corresponding electric field of a composite system made of a nanorod in the vicinity of a plasmonic semi-infinite metallic system. To be specific, we choose Silver as the material for both the nanorod and the semi-infinite metal. The system is composed of two sub-systems with different symmetries: the rod has symmetry, while the interface has a rectangular one. Using a boundary integral method, proposed by Eyges, we are able to compute analytically the integrals that sew together the two systems. In the end, the problem is reduced to one of linear algebra, where all the terms in the system are known analytically. For large distances between the rod and the planar surface, only a few of those integrals are needed and a full analytical solution can be obtained. Our results are important to benchmark other numerical approaches and represent a starting point in the discussion of systems composed of nanorods and two-dimensional materials.
description: Accepted for publication in Journal of Optics
Ends of War. Interdisciplinary Perspectives on Past and New Polish Regions after 1944. Hrsg. von Paulina Gulińska-Jurgiel, Yvonne Kleinmann, Miloš Řezník und Dorothea Warneck.
Creators: name: Kluger, Anne
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2020

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 69 Nr. 4 (2020)
Teichmüller's problem in space
Creators: name: Klén, R.
name: Todorčević, V.
name: Vuorinen, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Complex Variables (math.CV)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 30C65, 30C62

description: Quasiconformal homeomorphisms of the whole space Rn, onto itself normalized at one or two points are studied. In particular, the stability theory, the case when the maximal dilatation tends to 1, is in the focus. Our main result provides a spatial analogue of a classical result due to Teichmüller. Unlike Teichmüller's result, our bounds are explicit. Explicit bounds are based on two sharp well-known distortion results: the quasiconformal Schwarz lemma and the bound for linear dilatation. Moreover, Bernoulli type inequalities and asymptotically sharp bounds for special functions involving complete elliptic integrals are applied to simplify the computations. Finally, we discuss the behavior of the quasihyperbolic metric under quasiconformal maps and prove a sharp result for quasiconformal maps of R^n \ {0} onto itself.
description: 25 pages, 2 figures
Immunofluorescent flow cytometry in N dimensions : multiplex labelling analysis, and dynamic interpretation of the data
Creators: name: Buican, Tudor Nicolae
Publisher: name: University of British Columbia
Year: 2010

description: This thesis investigates two new approaches to the use of multiple antibody labels in flow cytometry. On the experimental side, we develop the Multiplex Labelling method, which allows the number of simultaneous antibody labels to exceed the number of fluorochromes, thus overcoming the technical limitations imposed by the number of available fluorochromes and fluorescence measuring channels. On the theoretical side, we construct a dynamic interpretation of immunofluorescent flow cytometry data, which allows information on the kinetics of cell division and differentiation to be extracted. The first part of the thesis discusses multiplex labelling. Chapter 1.1 presents the theory of this method, a reconstruction formula on which the algorithm for multiplex labelling data processing can be based, and a case study illustrating the use of this method in the triple labelling analysis of murine thymocytes. A murine thymocyte subset not previously described by flow cytometry is observed in this study for the first time. Chapter 1.2 describes the Immunofluorescence Tomograph, a microcomputer-controlled device for the preparation of multiplex labelling solutions. This device makes possible the routine use of multiplex triple labelling, by carrying out a complicated and time consuming part of the experimental protocol. The second part of this thesis deals with the dynamic interpretation of the data. Chapter 2.1 describes the theory of skeletal analysis, which is a coarse topological analysis of immunofluorescent flow cytometry data, concerned with the outlines of regions where the distribution is significantly different' from zero. Chapter 2.2 investigates the finer topological details of the distributions resulting from division and/or differentiation. We show that, under certain reasonable conditions, these distributions acquire simple forms, which can be easily analyzed and compared to actual data. Chapter 2.3 presents murine thymocyte triple labelling data obtained by multiplex analysis. These include data on the embryonic thymus (from day 15 to day 20 of embryonic development), as well as the neonate and adult thymus. The methods developed in chapters 2.1 and 2.2 are applied, and two partial thymocyte lineages are defined. One of these lineages has not been previously reported.
Pavel Polian: Briefe aus der Hölle. Die Aufzeichnungen des jüdischen Sonderkommandos Auschwitz. Aus dem Russischen von Roman Richter, bearb. von Andreas Kilian.
Creators: name: Lehnstaedt, Stephan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2020

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 69 Nr. 4 (2020)
Social Catalysts: Characterizing People Who Spark Conversations Among Others
Creators: name: Saveski, Martin
name: Kooti, Farshad
name: Vitousek, Sylvia Morelli
name: Diuk, Carlos
name: Bartlett, Bryce
name: Adamic, Lada
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: People assume different and important roles within social networks. Some roles have received extensive study: that of influencers who are well-connected, and that of brokers who bridge unconnected parts of the network. However, very little work has explored another potentially important role, that of creating opportunities for people to interact and facilitating conversation between them. These individuals bring people together and act as social catalysts. In this paper, we test for the presence of social catalysts on the online social network Facebook. We first identify posts that have spurred conversations between the poster's friends and summarize the characteristics of such posts. We then aggregate the number of catalyzed comments at the poster level, as a measure of the individual's "catalystness." The top 1% of such individuals account for 31% of catalyzed interactions, although their network characteristics do not differ markedly from others who post as frequently and have a similar number of friends. By collecting survey data, we also validate the behavioral measure of catalystness: a person is more likely to be nominated as a social catalyst by their friends if their posts prompt discussions between other people more frequently. The measure, along with other conversation-related features, is one of the most predictive of a person being nominated as a catalyst. Although influencers and brokers may have gotten more attention for their network positions, our findings provide converging evidence that another important role exists and is recognized in online social networks.
description: Published in CSCW (ACM Conference on Computer-Supported Cooperative Work and Social Computing)
High Spatial Resolution Observations of Molecular Lines towards the Protoplanetary Disk around TW Hya with ALMA
Creators: name: Nomura, Hideko
name: Tsukagoshi, Takashi
name: Kawabe, Ryohei
name: Muto, Takayuki
name: Kanagawa, Kazuhiro D.
name: Aikawa, Yuri
name: Akiyama, Eiji
name: Okuzumi, Satoshi
name: Ida, Shigeru
name: Lee, Seokho
name: Walsh, Catherine
name: Millar, T. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present molecular line observations of 13CO and C18O J=3-2, CN N = 3 - 2, and CS J=7-6 lines in the protoplanetary disk around TW Hya at a high spatial resolution of ~9 au (angular resolution of 0.15''), using the Atacama Large Millimeter/Submillimeter Array. A possible gas gap is found in the deprojected radial intensity profile of the integrated C18O line around a disk radius of ~58 au, slightly beyond the location of the au-scale dust clump at ~52 au, which resembles predictions from hydrodynamic simulations of planet-disk interaction. In addition, we construct models for the physical and chemical structure of the TW Hya disk, taking account of the dust surface density profile obtained from high spatial resolution dust continuum observations. As a result, the observed flat radial profile of the CN line intensities is reproduced due to a high dust-to-gas surface density ratio inside ~20 au. Meanwhile, the CO isotopologue line intensities trace high temperature gas and increase rapidly inside a disk radius of ~30 au. A model with either CO gas depletion or depletion of gas-phase oxygen elemental abundance is required to reproduce the relatively weak CO isotopologue line intensities observed in the outer disk, consistent with previous atomic and molecular line observations towards the TW Hya disk. {Further observations of line emission of carbon-bearing species, such as atomic carbon and HCN, with high spatial resolution would help to better constrain the distribution of elemental carbon abundance in the disk gas.
description: 22 pages, 7 figures, Accepted for publication in ApJ
Ross W. Halpin: Jewish Doctors and the Holocaust. The Anatomy of Survival in Auschwitz.
Creators: name: Rotzoll, Maike
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2020

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 69 Nr. 4 (2020)
Baryons: What, When and Where?
Creators: name: Prochaska, Jason X.
name: Tumlinson, Jason
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review the current state of empirical knowledge of the total budget of baryonic matter in the Universe as observed since the epoch of reionization. Our summary examines on three milestone redshifts since the reionization of H in the IGM, z = 3, 1, and 0, with emphasis on the endpoints. We review the observational techniques used to discover and characterize the phases of baryons. In the spirit of the meeting, the level is aimed at a diverse and non-expert audience and additional attention is given to describe how space missions expected to launch within the next decade will impact this scientific field.
description: Proceedings Review for "Astrophysics in the Next Decade: JWST and Concurrent Facilities", ed. X. Tielens, 38 pages, 10 color figures. Revised to address comments from the community
ПОНЯТИЕ, КЛАССИФИКАЦИЯ, ЗНАЧЕНИЕ ЭЛЕКТРОННЫХ ДОКАЗАТЕЛЬСТВ В УГОЛОВНОМ ПРОЦЕССЕ И ОСОБЕННОСТИ ИХ ОСМОТРА
Creators: name: Аллашова, Шийринай
Publisher: name: Zenodo
Year: 2023

description: В статье исследуются вопросы определения понятия электронных доказательств, их классификации и видов. Рассматривается вопрос тактики осмотра электронных доказательств, а также проблемы, возникающие при производстве следственного действия осмотр.
Determining chiral couplings at NLO
Creators: name: Rosell, Ignasi
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a general method that allows to estimate the low-energy constants of Chiral Perturbation Theory up to next-to-leading corrections in the 1/N(C) expansion, that is, keeping full control of the renormalization scale dependence. As a first step we have determined L(8) and C(38), the couplings related to the difference of the two-point correlation functions of two scalar and pseudoscalar currents, L(8)(mu_0) = (0.6 \pm 0.4) 10^{-3} and C(38)(mu_0) = (2 \pm 6) 10^{-6}$, with mu_0 = 0.77 GeV. As in many effective approaches, one of the main ingredients of this method is the matching procedure: some comments related to this topic are presented here.
description: Talk given at the International Workshop on Quantum Chromodynamics QCD@work 2007, 16th-20th June (2007), Martina Franca (Italy). 6 pp
Mordechai Strigler: In den Fabriken des Todes. Ein früher Zeitzeugenbericht vom Arbeitslager Skarżysko-Kamienna. Hrsg. von Frank Beer, übers. von Sigrid Beisel.
Creators: name: Friedman, Alexander
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2020

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 69 Nr. 4 (2020)
Positivity and Kleiman transversality in equivariant K-theory of homogeneous spaces
Creators: name: Anderson, Dave
name: Griffeth, Stephen
name: Miller, Ezra
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14M17, 14N15, 19E08, 14F43 (Primary), 32M10, 14F17, 14F05, 14M15, 14L30, 14L35, 57T15, 51N30, 51N35, 14C40, 14J17, 14C35 (Secondary)

description: We prove the conjectures of Graham-Kumar and Griffeth-Ram concerning the alternation of signs in the structure constants for torus-equivariant K-theory of generalized flag varieties G/P. These results are immediate consequences of an equivariant homological Kleiman transversality principle for the Borel mixing spaces of homogeneous spaces, and their subvarieties, under a natural group action with finitely many orbits. The computation of the coefficients in the expansion of the equivariant K-class of a subvariety in terms of Schubert classes is reduced to an Euler characteristic using the homological transversality theorem for non-transitive group actions due to S. Sierra. A vanishing theorem, when the subvariety has rational singularities, shows that the Euler characteristic is a sum of at most one term--the top one--with a well-defined sign. The vanishing is proved by suitably modifying a geometric argument due to M. Brion in ordinary K-theory that brings Kawamata-Viehweg vanishing to bear.
description: 28 pages; v2 has slightly expanded exposition and fixes an error in v1 that treated dualizing sheaves of Schubert varieties as if they were line bundles; v3 is the published version, but includes corrections of the signs of weights in Section 2.3 and the definition of a torus action in Section 6; v4 corrects and simplifies the proofs of Proposition 8.1 and Lemma 10.2
Leerstelle(n)? Der deutsche Vernichtungskrieg 1941–1944 und die Vergegenwärtigung des Geschehens nach 1989. Hrsg. von Alexandra Klei und Katrin Stoll.
Creators: name: Logemann, Daniel
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2020

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 69 Nr. 4 (2020)
Thermal Percolation for Interacting Monomers Adsorbed on Square Lattices
Creators: name: Gimenez, M. Cecilia
name: Nieto, Felix
name: Ramirez-Pastor, Antonio J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this paper the percolation of monomers on a square lattice is studied as the particles interact with either repulsive or attractive energies. By means of a finite-size scaling analysis, the critical exponents and the scaling collapsing of the fraction of percolating lattice are found. A phase diagram separating a percolating from a non-percolating region is determined. The main features of the phase diagram are discussed in terms of simple considerations related to the interactions present in the problem. The influence of the phase transitions occurring in the system is reflected by the phase diagram. In addition, a scaling treatment maintaining constant the surface coverage and varying the temperature of the system is performed. In all the considered cases, the universality class of the model is found to be the same as for the random percolation model.
description: 19 pages, 8 figures
Ian Rich: Holocaust Perpetrators of the German Police Battalions. The Mass Murder of Jewish Civilians, 1940-1942.
Creators: name: Friedrich, Klaus-Peter
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2020

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 69 Nr. 4 (2020)
Heidi Behrens, Norbert Reichling: „Ich war ein seltener Fall“. Die deutsch-jüdisch-polnische Geschichte der Leni Zytnicka.
Creators: name: Kloza, Martin Christoph
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2020

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 69 Nr. 4 (2020)
Andrzej Leder: Polen im Wachtraum. Die Revolution 1939–1956 und ihre Folgen. Aus dem Polnischen von Sandra Ewers, mit einer Einführung von Felix Ackermann.
Creators: name: Pufelska, Agnieszka
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2020

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 69 Nr. 4 (2020)
Quantum dynamics of a polar rotor acted upon by an electric rectangular pulse of variable duration
Creators: name: Karra, Mallikarjun
name: Friedrich, Bretislav
name: Schmidt, Burkhard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: As demonstrated in our previous work [J. Chem. Phys. 149, 174109 (2018)], the kinetic energy imparted to a quantum rotor by a non-resonant electromagnetic pulse with a Gaussian temporal profile exhibits quasi-periodic drops as a function of the pulse duration. Herein, we show that this behaviour can be reproduced with a simple waveform, namely a rectangular electric pulse of variable duration, and examine, both numerically and analytically, its causes. Our analysis reveals that the drops result from the oscillating populations that make up the wavepacket created by the pulse and that they are necessarily accompanied by drops in the orientation and by a restoration of the pre-pulse alignment of the rotor. Handy analytic formulae are derived that allow to predict the pulse durations leading to diminished kinetic energy transfer and orientation. Experimental scenarios are discussed where the phenomenon could be utilized or be detrimental.
description: 18 pages, 5 figures. Submitted to the Molecular Physics special issue dedicated to J\"urgen Troe
Inversion of cosmogenic nuclide data from iron meteorites
Creators: name: Pearce, Steven James
Publisher: name: University of British Columbia
Year: 2010

description: The long accepted conclusion that the galactic cosmic ray flux has been "fairly" constant over the past billion years or so is based upon both weak inferences and self-inconsistent interpretations of the data. For example, the well known exposure age diserepency between the analyses based on ⁴⁰K and those of the shorter-lived radionuclides (i.e., ¹⁰Be, ²⁶Al, and ³⁶Cl) has yet to be properly reconciled. Recent work by Schaeffer et al. (1981) on space erosion rates for irons suggests that only a variation in the galactic cosmic ray flux yields the satisfactory explanation. Reformulating this problem within the framework of linear inverse theory (Backus and Gilbert, 1967, 1968, 1970) allows for an unprecedented perspective on this problem as compared with any previous analyses. In theory, it is found that smoothed estimates of the long term galactic cosmic ray prehistory can be formed with arbitrarily good resolution. The degree of smoothing is determined primarily by the relative exposure age differences among adjacent meteorite samples as well as their associated experimental uncertainties. Moreover, this is the only unique information available to this entire study. The near absense of a priori constraints promotes a simple objective philosophy of interpretation. Further, the lack of any independent exposure age determination presents an inherent non-linearity. But, it can be shown that a single model for both the cosmic ray flux and the exposure ages, mutually consistent with the observations and associated errors, can be derived under several fundamental criteria.
Meta-stable A_n quiver gauge theories
Creators: name: Amariti, A.
name: Girardello, L.
name: Mariotti, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study metastable dynamical breaking of supersymmetry in A_n quiver gauge theories. We present a general analysis and criteria for the perturbative existence of metastable vacua in quivers of any length. Different mechanisms of gauge mediation can be realized.
description: Minor corrections, reference added, published in JHEP
Ljudmila Nikitina: Moisej (Mečislav) Vajnberg. Po stranicam žizni čerez dokumenty, vospominanija i issledovanija. [Mieczysław Weinberg. Lebensstationen in Dokumenten, Erinnerungen und Untersuchungen.]
Creators: name: Wehrmeyer, Andreas
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2020

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 69 Nr. 4 (2020)
GAVIN: Gaze-Assisted Voice-Based Implicit Note-taking
Creators: name: Khan, Anam Ahmad
name: Newn, Joshua
name: Kelly, Ryan
name: Srivastava, Namrata
name: Bailey, James
name: Velloso, Eduardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Annotation is an effective reading strategy people often undertake while interacting with digital text. It involves highlighting pieces of text and making notes about them. Annotating while reading in a desktop environment is considered trivial but, in a mobile setting where people read while hand-holding devices, the task of highlighting and typing notes on a mobile display is challenging. In this paper, we introduce GAVIN, a gaze-assisted voice note-taking application, which enables readers to seamlessly take voice notes on digital documents by implicitly anchoring them to text passages. We first conducted a contextual enquiry focusing on participants' note-taking practices on digital documents. Using these findings, we propose a method which leverages eye-tracking and machine learning techniques to annotate voice notes with reference text passages. To evaluate our approach, we recruited 32 participants performing voice note-taking. Following, we trained a classifier on the data collected to predict text passage where participants made voice notes. Lastly, we employed the classifier to built GAVIN and conducted a user study to demonstrate the feasibility of the system. This research demonstrates the feasibility of using gaze as a resource for implicit anchoring of voice notes, enabling the design of systems that allow users to record voice notes with minimal effort and high accuracy.
description: In press, ACM Transactions on Computer-Human Interaction
A Fast and Accurate Analytic Method of Calculating Galaxy Two-point Correlation Functions
Creators: name: He, Chong-Chong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We have developed a new analytic method to calculate the galaxy two-point correlation functions (TPCFs) accurately and efficiently, applicable to surveys with finite, regular, and mask-free geometries. We have derived simple, accurate formulas of the normalized random-random pair counts $RR$ as functions of the survey area dimensions. We have also suggested algorithms to compute the normalized data-random pair counts $DR$ analytically. With all edge corrections fully accounted for analytically, our method computes $RR$ and $DR$ with perfect accuracy and zero variance in $O(1)$ and $O(N_{\rm g})$ time, respectively. We test our method on a galaxy catalogue from the EAGLE simulation. Our method calculates $RR+DR$ at a speed 3 to 6 orders of magnitude faster than the brute-force Monte Carlo method and 2.5 orders of magnitude faster than tree-based algorithms. For a galaxy catalogue with 10 million data points in a cube, this reduces the computation time to under 1 minute on a laptop. Our analytic method is favored over the traditional Monte Carlo method whenever applicable. Some applications in the study of correlation functions and power spectra in cosmological simulations and galaxy surveys are discussed. However, we recognize that its applicability is very limited for realistic surveys with masks, irregular shapes, and/or weighted patterns.
description: 16 pages, 3 figures; accepted by ApJ; revised to match the accepted version; code accessible on https://github.com/chongchonghe/analytic-2pcf/tree/v1.0.0
Self-interaction correction with Wannier functions
Creators: name: Stengel, Massimiliano
name: Spaldin, Nicola A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We describe the behavior of the Perdew-Zunger self-interaction-corrected local density approximation (SIC-LDA) functional when implemented in a plane-wave pseudopotential formalism with Wannier functions. Prototypical semiconductors and wide-bandgap oxides show a large overcorrection of the LDA bandgap. Application to transition-metal oxides and elements with d electrons is hindered by a serious breaking of the spherical symmetry, which appears even in a closed shell free atom. Our results indicate that, when all spherical approximations are lifted, the general applicability of orbital-dependent potentials is very limited and should be reconsidered in favor of rotationally invariant functionals.
description: 10 pages, 5 figures
Political and Transitional Justice in Germany, Poland and the Soviet Union from the 1930s to the 1950s. Hrsg. von Magnus Brechtken, Władysław Bułhak und Jürgen Zarusky.
Creators: name: Cepinskyte, Agne
Publisher: name: Journal of East Central European Studies
Year: 2020

description: Journal of East Central European Studies, Bd. 69 Nr. 4 (2020)
Lie symmetries of multidimensional difference equations
Creators: name: Levi, Decio
name: Tremblay, Sébastien
name: Winternitz, Pavel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A method is presented for calculating the Lie point symmetries of a scalar difference equation on a two-dimensional lattice. The symmetry transformations act on the equations and on the lattice. They take solutions into solutions and can be used to perform symmetry reduction. The method generalizes one presented in a recent publication for the case of ordinary difference equations. In turn, it can easily be generalized to difference systems involving an arbitrary number of dependent and independent variables.
Inherent Structure Landscape of Hard Spheres Confined to Narrow Cylindrical Channels
Creators: name: Zarif, Mahdi
name: Spiteri, Raymond J.
name: Bowles, Richard K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The inherent structure landscape for a system of hard spheres confined to a hard cylindrical channel, such that spheres can only contact their first and second neighbours, is studied using an analytical model that extends previous results [Phys. Rev. Lett. 115, 025702 (2015)] to provide a comprehensive picture of jammed packings over a range of packing densities. In the model, a packing is described as an arrangement of $k$ helical sections, separated by defects, that have alternating helical twist directions and where all spheres satisfy local jamming constraints. The structure of each helical section is determined by a single helical twist angle, and a jammed packing is obtained by minimizing the length of the channel per particle with respect to the $k$ helical section angles. An analysis of a small system of $N=20$ spheres shows that the basins on the inherent structure landscape associated with these helical arrangements split into a number of distinct jammed states separated by low barriers giving rise to a degree of hierarchical organization. The model accurately predicts the geometric properties of packings generated using the Lubachevsky and Stillinger compression scheme ($N=10^4$) and provides insight into the nature of the probability distribution of helical section lengths.
description: 11 Figures
Nadia Zavorotna: Scholars in Exile. The Ukrainian Intellectual World in Interwar Czechoslovakia.
Creators: name: Rohde, Martin
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2020

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 69 Nr. 4 (2020)
Novel Biomarkers and protein-protein interactions in gastroesophageal reflux disease (GERD)
Creators: name: Baila, Bianca-Mariana
name: Silverman, Rosalind
name: Silverman, Lorelei
Publisher: name: figshare
Year: 2021
Subjects: subject: Biomarkers
subject: 111201 Cancer Cell Biology
subject: FOS: Clinical medicine
subject: 111202 Cancer Diagnosis
subject: 111203 Cancer Genetics
subject: 111204 Cancer Therapy (excl. Chemotherapy and Radiation Therapy)
subject: Diseases
subject: 110307 Gastroenterology and Hepatology
subject: 110106 Medical Biochemistry: Proteins and Peptides (incl. Medical Proteomics)

description: Gastroesophageal reflux disease (GERD) is a chronic condition in which the gastric acid regurgitates into the esophagus. [1] GERD is an important health condition as it is associated with a decline in quality of life and increased morbidity. [2] The main cause of gastroesophageal reflux disease is the interaction of the gastric acid and bile with the esophagus. When the gastric contents meet the esophagus, it can cause the classic symptoms of heartburn and regurgitation. A continuous exposure of esophagus to these fluids can cause damages to the lining of the esophagus producing ulcers or pre-malignant changes such as Barrett’s esophagus. [3]
Nanoscale functionalized superconducting transport channels as photon detectors
Creators: name: Spataru, Catalin D.
name: Léonard, François
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Single-photon detectors have typically consisted of macroscopic materials where both the photon absorption and transduction to an electrical signal happen. Newly proposed designs suggest that large arrays of nanoscale detectors could provide improved performance in addition to decoupling the absorption and transduction processes. Here we study the properties of such a detector consisting of a nanoscale superconducting (SC) transport channel functionalized by a photon absorber. We explore two detection mechanisms based on photo-induced electrostatic gating and magnetic effects. To this end we model the narrow channel as a one-dimensional atomic chain and use a self-consistent Keldysh-Nambu Green's function formalism to describe non-equilibrium effects and SC phenomena. We consider cases where the photon creates electrostatic and magnetic changes in the absorber, as well as devices with strong and weak coupling to the metal leads. Our results indicate that the most promising case is when the SC channel is weakly coupled to the leads and in the presence of a background magnetic field, where photo-excitation of a magnetic molecule can trigger a SC-to-normal transition in the channel that leads to a change in the device current several times larger than in the case of a normal-phase channel device.
description: 12 pages, 12 figures, Phys. Rev. B in press
Nilpotent orbits in classical Lie algebras over finite fields of characteristic 2 and the Springer correspondence
Creators: name: Xue, Ting
Publisher: name: arXiv
Year: 2008
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Let $G$ be an adjoint algebraic group of type $B$, $C$, or $D$ over an algebraically closed field of characteristic 2. We construct a Springer correspondence for the Lie algebra of $G$. In particular, for orthogonal Lie algebras in characteristic 2, the structure of component groups of nilpotent centralizers is determined and the number of nilpotent orbits over finite fields is obtained.
description: 19 pages
Silvia Bolliger: Im Zeichen der Nationalisierung. Die Haltung der Universität Zürich gegenüber ausländischen Studierenden in der Zwischenkriegszeit.
Creators: name: Friedrich, Klaus-Peter
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2020

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 69 Nr. 4 (2020)
A photometric study of the open cluster NGC 7419
Creators: name: Thibault, Daniel
Publisher: name: University of British Columbia
Year: 2010

description: A set of UBV plates of the heavily-extinguished open cluster NGC 7419, obtained at the Observatoire Astronomique du Mont Megantic by Anthony F. J. Moffat, were digitized by the Dominion Astrophysical Observatory PDS (Photometric Data Systems, Perkin-Elmer Corporation) machine. The data was subsequently processed by Greg Fahlman and Chris Pritchett's TOODEE Command Language, and later John Nicol's SUPERTOODEE Command Language. The resulting set of intensity indices were calibrated in the UBV system using Handschel and Sandage's magnitudes into a set of observed magnitudes. These were then de-reddened and de-extinguished with the help of an updated variation of Serkowski's (1956) method. Handschel's claim of differential reddening across the face of the cluster was examined and found valid. Using our own Zero-Age main sequence culled from several sources, the distance modulus was estimated at 13.9 ± 0.1 mag. Comparison of our color-magnitude diagram with those of other young clusters as well as with theoretical isochrones leads us to estimate the cluster as being as young as, or younger than, 10 million years, although serious problems with the photometry preclude any further analysis. Low-resolution Reticon spectra were obtained with the Dominion Astrophysical Observatory's 180 cm telescope of some of the cluster's stars in the hope of measuring radial velocities. The spectra were processed with Stephenson Yang's RETICENT Command Language. These were used to attempt to resolve the question of the possible membership of the fringe-dwelling carbon star. The low-weight determinations obtained for the carbon star and another possible cluster member are inconclusive and stress the need for a more careful study of the problem. In conclusion, the cluster's color-magnitude turnoff was observed, and its age and distance evaluated as 5 ± 5 Ma and 6.0 ± 0.3 kpc respectively. Average extinction was found to be A[sub v] = 5.85, and reddening E(B-V) = 1.77.
The Newtonian Potential in Gravitational Cohomology
Creators: name: Atkins, Richard
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We examine the Newtonian potential in gravitational cohomology. This is given by a symmetric, two-index tensor field, which satisfies the wave equation in empty space. Furthermore, the associated gravitational field strength, obtained by applying the coboundary operator to the potential, is constructed for the case of a stationary point mass and shown to give the classical result.
description: 14 pages
Adaptive Streaming of 360 Videos with Perfect, Imperfect, and Unknown FoV Viewing Probabilities in Wireless Networks
Creators: name: Zhao, Lingzhi
name: Cui, Ying
name: Liu, Zhi
name: Zhang, Yunfei
name: Yang, Sheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: This paper investigates adaptive streaming of one or multiple tiled 360 videos from a multi-antenna base station (BS) to one or multiple single-antenna users, respectively, in a multi-carrier wireless system. We aim to maximize the video quality while keeping rebuffering time small via encoding rate adaptation at each group of pictures (GOP) and transmission adaptation at each (transmission) slot. To capture the impact of field-of-view (FoV) prediction, we consider three cases of FoV viewing probability distributions, i.e., perfect, imperfect, and unknown FoV viewing probability distributions, and use the average total utility, worst average total utility, and worst total utility as the respective performance metrics. In the single-user scenario, we optimize the encoding rates of the tiles, encoding rates of the FoVs, and transmission beamforming vectors for all subcarriers to maximize the total utility in each case. In the multi-user scenario, we adopt rate splitting with successive decoding and optimize the encoding rates of the tiles, encoding rates of the FoVs, rates of the common and private messages, and transmission beamforming vectors for all subcarriers to maximize the total utility in each case. Then, we separate the challenging optimization problem into multiple tractable problems in each scenario. In the single-user scenario, we obtain a globally optimal solution of each problem using transformation techniques and the Karush-Kuhn-Tucker (KKT) conditions. In the multi-user scenario, we obtain a KKT point of each problem using the concave-convex procedure (CCCP). Finally, numerical results demonstrate that the proposed solutions achieve notable gains over existing schemes in all three cases. To the best of our knowledge, this is the first work revealing the impact of FoV prediction on the performance of adaptive streaming of tiled 360 videos.
description: 18 pages, 20 figures, to appear in Trans. Image Process. arXiv admin note: text overlap with arXiv:2009.01753
Maciej Górny: Vaterlandszeichner. Geografen und Grenzen im Zwischeneuropa.
Creators: name: Schattkowsky, Ralph
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2020

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 69 Nr. 4 (2020)
Path probability density functions for semi-Markovian random walks
Creators: name: Flomenbom, O.
name: Silbey, R. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Biological Physics (physics.bio-ph)
subject: Other Quantitative Biology (q-bio.OT)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: In random walks, the path representation of the Green's function is an infinite sum over the length of path probability density functions (PDFs). Here we derive and solve, in Laplace space, the recursion relation for the n order path PDF for any arbitrarily inhomogeneous semi-Markovian random walk in a one-dimensional (1D) chain of L states. The recursion relation relates the n order path PDF to L/2 (round towards zero for an odd L) shorter path PDFs, and has n independent coefficients that obey a universal formula. The z transform of the recursion relation straightforwardly gives the generating function for path PDFs, from which we obtain the Green's function of the random walk, and derive an explicit expression for any path PDF of the random walk. These expressions give the most detailed description of arbitrarily inhomogeneous semi-Markovian random walks in 1D.
AMIR TEMUR DAVLAT BOSHQARUVIDA IJTIMOIY MUHOFAZA VA XAVFSIZLIK
Creators: name: Madaminov, G'ayrat
name: Qurbanov, G'ani
Publisher: name: Zenodo
Year: 2023

description: Bizga ma’lumki, har bir xalqning o‘z sardorlari, sarbonlari, alp bahodirlari, millatparvar, vatanparvar farzandlari-sultonu podsholari bo‘ladi. Ular o‘zlarining ijtimoiy, siyosiy faoliyatlari, betakror aql-zakovatlari bilan ma’lum bir jamiyatning ham, unda yashovchi kishilarning ham taqdirini o‘zgartirib yuboradilar. O‘z xalqining, vatanining ozod va obod bo‘lishi uchun fidoyilik, jasorat ko‘rsatadilar. Shaxsiy manfaat, shon-shuhrat kabi unsurlarni keyingi o‘rinlarga surib qo‘yib, millatning dardiga darmon bo‘lib yashaydilar.
Aolp : an automatic object location program
Creators: name: Scharein, Robert Glenn
Publisher: name: University of British Columbia
Year: 2010

description: This thesis describes the first incarnation of an automated photometry program AOLP, acronym for Automatic Object Location Program. This program is designed to search through an image and to find, catalogue, and (eventually) classify all objects found. The primary aim is for use in a faint galaxy survey. The program has also proven useful in other areas, such as photometry of globular clusters and relatively nearby, bright galaxies.
Nilpotent orbits in the dual of classical Lie algebras in characteristic 2 and the Springer correspondence
Creators: name: Xue, Ting
Publisher: name: arXiv
Year: 2008
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Let $G$ be a simply connected algebraic group of type $B,C$ or $D$ over an algebraically closed field of characteristic 2. We construct a Springer correspondence for the dual vector space of the Lie algebra of $G$. In particular, we classify the nilpotent orbits in the duals of symplectic and orthogonal Lie algebras over algebraically closed or finite fields of characteristic 2.
description: 26 pages. arXiv admin note: text overlap with arXiv:0808.2995
Piotr Bednarz: Für die Unabhängigkeit Polens! Berichte und Standpunkte der Schweizer Presse im Ersten Weltkrieg.
Creators: name: Szlanta, Piotr
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2020

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 69 Nr. 4 (2020)
Lambda-parameter of lattice QCD with Symanzik improved gluon actions
Creators: name: Skouroupathis, A.
name: Panagopoulos, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We compute the ratio Lambda_L/Lambda_MS, where the scale parameter Lambda_L is associated with a lattice formulation of QCD. We consider a 3-parameter family of gluon actions, which are most frequently used for O(a) improvement a` la Symanzik. The gluon action is put togeter with standard discretizations for fermions (Wilson/clover, overlap), to provide Lambda_L for several possible combinations of fermion and gluon actions. We employ the background field technique in order to calculate the 1PI 2-point function of the background field; this leads to the coupling constant renormalization function, Z_g, at 1-loop level. Our results are obtained for an extensive range of values for the Symanzik coefficients.
description: 11 pages, 3 figures, 3 tables
Density of States and Critical Behavior of the Coulomb Glass
Creators: name: Surer, Brigitte
name: Katzgraber, Helmut G.
name: Zimanyi, Gergely T.
name: Allgood, Brandon A.
name: Blatter, Gianni
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We present zero-temperature simulations for the single-particle density of states of the Coulomb glass. Our results in three dimensions are consistent with the Efros and Shklovskii prediction for the density of states. Finite-temperature Monte Carlo simulations show no sign of a thermodynamic glass transition down to low temperatures, in disagreement with mean-field theory. Furthermore, the random-displacement formulation of the model undergoes a transition into a distorted Wigner crystal for a surprisingly broad range of the disorder strength.
description: 4 pages, 2 figures, 1 table
Excel sobre las estrategias de búsqueda de artículos
Creators: name: Gutierrez Garcia, Juan
name: Abanto, Dante
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 300101
subject: Agricultural biotechnology diagnostics (incl. biosensors)
classificationCode: 300205
subject: Agricultural production systems simulation
classificationCode: 461103
subject: Deep learning
classificationCode: 461104
subject: Neural networks

description: Es un Excel que contiene las estrategias de búsqueda para los artículos usados en la investigación sobre machine learning sobre la predicción de plagas.
Spatial string tension in $N_f=2$ lattice QCD at finite temperature
Creators: name: Bornyakov, V. G.
name: Lushchevskaya, E. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The spatial string tension across a crossover from the low temperature phase to the high temperature phase is computed in QCD with two flavors of non-perturbatively improved Wilson fermions at small lattice spacing a \sim 0.12fm. We find that in the low temperature phase spatial string tension agrees well with zero temperature string tension. Furthermore, it does not show increasing for temperatures up to T = 1.36 T_{pc}, the highest temperature considered. Our results agree with some theoretical predictions.
description: 8 pages, 2 figures, numerical results and both figures slightly changed, comparison with theoretical predictions added, values of the ratio T/T_{pc} slightly changed
Spin-texture and magneto-roton excitations at nu=1/3
Creators: name: Groshaus, Javier G.
name: Dujovne, Irene
name: Gallais, Yann
name: Hirjibehedin, Cyrus F.
name: Pinczuk, Aron
name: Tan, Yan-Wen
name: Stormer, Horst
name: Dennis, Brian S.
name: Pfeiffer, Loren N.
name: West, Ken W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Neutral spin texture ST excitations at nu=1/3 are directly observed for the first time by resonant inelastic light scattering. They are determined to involve two simultaneous spin- flips. At low magnetic fields, the ST energy is below that of the magneto-roton minimum. With increasing in-plane magnetic field these modes energies cross at a critical ratio of the Zeeman and Coulomb energies of eta_c=0.020 +- 0.001. Surprisingly, the intensity of the ST mode grows with temperature in the range in which the magneto-roton modes collapse. The temperature dependence is interpreted in terms of a competition between coexisting phases supporting different excitations. We consider the role of the ST excitations in activated transport at nu=1/3.
description: 5 pages, 4 color figs