cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Redshifted formaldehyde from the gravitational lens B0218+357
Creators: name: Jethava, N.
name: Henkel, C.
name: Menten, K. M.
name: Carilli, C. L.
name: Reid, M. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The gravitational lens toward B0218+357 offers the unique possibility to study cool moderately dense gas with high sensitivity and angular resolution in a cloud that existed half a Hubble time ago. Observations of the radio continuum and six formaldehyde (H2CO) lines were carried out with the VLA, the Plateau de Bure interferometer, and the Effelsberg 100-m telescope. Three radio continuum maps indicate a flux density ratio between the two main images, A and B, of ~ 3.4 +/- 0.2. Within the errors the ratio is the same at 8.6, 14.1, and 43 GHz. The 1_{01}-0_{00} line of para-H2CO is shown to absorb the continuum of image A. Large Velocity Gradient radiative transfer calculations are performed to reproduce the optical depths of the observed two cm-wave "K-doublet" and four mm-wave rotational lines. These calculations also account for a likely frequency-dependent continuum cloud coverage. Confirming the diffuse nature of the cloud, an n(H2) density of < 1000 cm^{-3} is derived, with the best fit suggesting n(H2) ~ 200 cm^{-3}. The H2CO column density of the main velocity component is ~5 * 10^{13} cm^{-2}, to which about 7.5 * 10^{12} cm^{-2} has to be added to also account for a weaker feature on the blue side, 13 km/s apart. N(H2CO)/N(NH3) ~ 0.6, which is four times less than the average ratio obtained from a small number of local diffuse (galactic) clouds seen in absorption. The ortho-to-para H2CO abundance ratio is 2.0 - 3.0, which is consistent with the kinetic temperature of the molecular gas associated with the lens of B0218+357. With the gas kinetic temperature and density known, it is found that optically thin transitions of CS, HCN, HNC, HCO+, and N2H+ (but not CO) will provide excellent probes of the cosmic microwave background at redshift z=0.68.
description: Accepted for A&A, 8 Pages, 3 Figures, 5 Tables
The ALMA Band 2 receiver
Creators: name: Yagoubov, Pavel
Publisher: name: Zenodo
Year: 2019

description: I will present an overview of the history of the ALMA Band 2 project from the first studies to the construction proposal. This talk will cover all components from the optical components, the LNAs, to the Cold and Warm Cartridge Assemblies. Integrated performance of the combined system will be shown.
Nuclear modification at sqrt{s_{NN}}=17.3 GeV, measured at NA49
Creators: name: Laszlo, Andras
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Transverse momentum spectra up to 4.5 GeV/c were measured around midrapidity in Pb+Pb reactions at sqrt{s_{NN}}=17.3 GeV, for pi^{+/-}, p, pbar and K^{+/-}, by the NA49 experiment. The nuclear modification factors R_{AA}, R_{AA/pA} and R_{CP} were extracted and are compared to RHIC results at sqrt{s_{NN}}=200 GeV. The modification factor R_{AA} shows a rapid increase with transverse momentum in the covered region. The modification factor R_{CP} shows saturation well below unity in the pi^{+/-} channel. The extracted R_{CP} values follow the 200 GeV RHIC results closely in the available transverse momentum range for all particle species. For pi^{+/-} above 2.5 GeV/c transverse momentum, the measured suppression is smaller than that observed at RHIC. The nuclear modification factor R_{AA/pA} for pi^{+/-} stays well below unity.
description: Proceedings of Quark Matter 2008 conference
Jerzy Kłoczowski, Hubert Łaszkiewicz (Hrsg.), Polen. Kurze Geschichte
Creators: name: Mühle, Eduard
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 2 (2013): Nationalisierung und Pragmatismus. Staatliche Institutionen und Minderheiten in Polen 1918-1939
Sets of non-differentiability for conjugacies between expanding interval maps
Creators: name: Jordan, Thomas
name: Kesseböhmer, Marc
name: Pollicott, Mark
name: Stratmann, Bernd O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37C45

description: We study differentiability of topological conjugacies between expanding piecewise $C^{1+ε}$ interval maps. If these conjugacies are not $C^1$, then they have zero derivative almost everywhere. We obtain the result that in this case the Hausdorff dimension of the set of points for which the derivative of the conjugacy does not exist lies strictly between zero and one. Using multifractal analysis and thermodynamic formalism, we show that this Hausdorff dimension is explicitly determined by the Lyapunov spectrum. Moreover, we show that these results give rise to a "rigidity dichotomy" for the type of conjugacies under consideration.
Visualization of ferromagnetic domains in TbNi$_2$B$_2$C and ErNi$_2$B$_2$C single crystals: Weak ferromagnetism and its coexistence with superconductivity
Creators: name: Veschunov, I. S.
name: Vinnikov, L. Ya.
name: Bud'ko, S. L.
name: Canfield, P. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The magnetic flux structure in the basal plane, (001), of single crystals of superconducting (R = Er) and non-superconducting (R = Tb) RNi$_2$B$_2$C was studied by high resolution Bitter decoration at temperatures below $T_c$ (superconducting transition) and/or $T_N$ (antiferromagnetic transition). For both materials two sets of domain boundaries, in \{110\} and \{100\} planes, were observed. The temperature ranges in which the \{100\} domain boundaries were observed in TbNi$_2$B$_2$C and ErNi$_2$B$_2$C coincide with the weak ferromagnetic (WFM) ordering in these materials. On the other hand, the \{110\} twin boundaries - the antiferromagnetic domain boundaries - were observed in both compounds below $T_N$. The possibility of interpretation of \{100\} boundaries as Bloch domain walls in the weakly ferromagnetic phase, for $T < T_{WFM} < T_N$ (TbNi$_2$B$_2$C) or $T < T_{WFM} < T_N < T_c$ (ErNi$_2$B$_2$C) is discussed.
A search for southern ultracool dwarfs in young moving groups
Creators: name: Clarke, J. R. A.
name: Pinfield, D. J.
name: Galvez-Ortiz, M. C.
name: Jenkins, J. S.
name: Burningham, B.
name: Deacon, N. R.
name: Jones, H. R. A.
name: Pokorny, R. S.
name: Barnes, J. R.
name: Day-Jones, A. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We associate 132 low-mass ultracool dwarfs in the southern hemisphere as candidate members of five moving groups using photometric and astrometric selection techniques. Of these objects, we present high resolution spectroscopy for seven candidates and combine these with previous measurements from the literature to determine spectral types and radial velocities. We thus constrain distance and space motion spectroscopically, allowing the kinematic membership of the moving groups to be assessed. Possible membership of moving groups has allowed ages and metallicities to be constrained for these objects and evolutionary models have been used to estimate their mass. We estimate that up to ~75 of our candidate moving group members should be genuine, and discuss future work that will confirm and exploit this major new sample.
description: 15 pages, 10 figures
Beate Störtkuhl, Moderne Architektur in Schlesien 1900 bis 1939. Baukultur und Politik
Creators: name: Pelka, Anna
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 4 (2014)
Circumstellar Disks in the Outer Galaxy: the Star-Forming Region NGC 1893
Creators: name: Caramazza, M.
name: Micela, G.
name: Prisinzano, L.
name: Rebull, L.
name: Sciortino, S.
name: Stauffer, J. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is still debated whether star formation process depends on environment. In particular it is yet unclear whether star formation in the outer Galaxy, where the environmental conditions are, theoretically, less conducive, occurs in the same way as in the inner Galaxy. We investigate the population of NGC1893, a young cluster ~3-4 Myr in the outer part of the Galaxy (galactic radius >11 Kpc), to explore the effects of environmental conditions on star forming regions. We present infrared observations acquired using the IRAC camera onboard the Spitzer Space Telescope and analyze the color-color diagrams to establish the membership of stars with excesses. We also merge this information with that obtained from Chandra ACIS-I observations, to identify the Class III population. We find that the cluster is very rich, with 242 PMS Classical T-Tauri stars and 7 Class 0/I stars. We identify 110 Class III candidate cluster members in the ACIS-I field of view. We estimate a disk fraction for NGC1893 of about 67%, similar to fractions calculated for nearby star forming regions of the same age. Although environmental conditions are unfavorable, star formation can clearly be very successful in the outer Galaxy, allowing creation of a very rich cluster like NGC1893.
description: 10 pages,7 figures,4 tables
Demonstration of Shor encoding on a trapped-ion quantum computer
Creators: name: Nguyen, Nhung H.
name: Li, Muyuan
name: Green, Alaina M.
name: Alderete, Cinthia Huerta
name: Zhu, Yingyue
name: Zhu, Daiwei
name: Brown, Kenneth R.
name: Linke, Norbert M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Fault-tolerant quantum error correction (QEC) is crucial for unlocking the true power of quantum computers. QEC codes use multiple physical qubits to encode a logical qubit, which is protected against errors at the physical qubit level. Here we use a trapped ion system to experimentally prepare $m$-qubit GHZ states and sample the measurement results to construct $m\times m$ logical states of the $[[m^2,1,m]]$ Shor code, up to $m=7$. The synthetic logical fidelity shows how deeper encoding can compensate for additional gate errors in state preparation for larger logical states. However, the optimal code size depends on the physical error rate and we find that $m=5$ has the best performance in our system. We further realize the direct logical encoding of the $[[9,1,3]]$ Shor code on nine qubits in a thirteen-ion chain for comparison, with $98.8(1)\%$ and $98.5(1)\%$ fidelity for state $\left\vert\pm\right\rangle_L$, respectively.
Nicolas Hayoz u.a. (Hrsg.), 20 Years after the Collapse of Communism. Expectations, Achievements and Disillusions of 1989
Creators: name: Bizeul, Yves
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 2 (2013): Nationalisierung und Pragmatismus. Staatliche Institutionen und Minderheiten in Polen 1918-1939
Charge Distributions in Transverse Coordinate Space and in Impact Parameter Space
Creators: name: Hwang, Dae Sung
name: Kim, Dong Soo
name: Kim, Jonghyun
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the charge distributions of the valence quarks inside nucleon in the transverse coordinate space, which is conjugate to the transverse momentum space. We compare the results with the charge distributions in the impact parameter space.
description: 13 pages, 18 figures
APEX SEPIA receiver:as a test bed for ALMA development
Creators: name: Belitsky, Victor
Publisher: name: Zenodo
Year: 2019

description: SEPIA (Swedish ESO PI receiver for APEX) was introduced at the APEX telescope in early 2015, installed in the Nasmyth cabin A at the guest position and commissioned as a PI instrument. The design of the SEPIA was driven by the idea of using ALMA receiver cartridges on the APEX telescope and in particular a new (that time) ALMA Band 5 receiver cartridge. The SEPIA cryostat was designed from scratch and can accommodate up to 3 ALMA cartridges. In February 2016, the second receiver cartridge, ALMA Band 9 (DSB) was installed and in the summer 2018 it was replaced with an experimental Band 9 receiver with 2SB mixers. In March 2019, SEPIA got all-new tertiary optics and was moved to the facility instrument position in the Cabin A. In our talk, we will present the SEPIA design, latest results on the development of the third experimental receiver channel corresponding to the ALMA Band 7, commissioning results for the new facility heterodyne instrument for the APEX tele  scope.
Patterned backgating using single-sided mask aligners: application to density-matched electron-hole bilayers
Creators: name: Croxall, A. F.
name: Gupta, K. Das
name: Nicoll, C. A.
name: Thangaraj, M.
name: Farrer, I.
name: Ritchie, D. A.
name: Pepper, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report our work on fabricating lithographically aligned patterned backgates on thin (50-60$μ$m) \Roman{roman3}-\Roman{roman5} semiconductor samples using {\it single sided mask aligners only}. Along with this we also present a way to photograph both sides of a thin patterned chip using inexpensive infra-red light emitting diodes (LED) and an inexpensive (consumer) digital camera. A robust method of contacting both sides of a sample using an ultrasonic bonder is described. In addition we present a mathematical model to analyse the variation of the electrochemical potential through the doped layers and heterojunctions that are normally present in most GaAs based devices. We utilise the technique and the estimates from our model to fabricate an electron-hole bilayer device in which each layer is separately contacted and has tunable densities. The electron and hole layers are separated by barriers either 25 or 15nm wide. In both cases, the densities can be matched by using appropriate bias voltages.
description: 7 pages, 8 EPS figures. Submitted to Journal of Applied Physics
Search for the C-parity violating process J/psi->gamma gamma via psi(2S)->pi+pi- J/psi
Creators: name: Ablikim, M.
name: Bai, J. Z.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using 14.0\times 10^6 ψ(2S) events collected with the BES-II detector, the C-parity violating process J/psi->gamma gamma via psi(2S)->pi+pi- J/psi is studied. We determine a new upper limit for the J/psi->gamma gamma branching ratio of B(J/psi->gamma gamma)<2.2\times 10^{-5} at the 90% C.L., which is about 20 times lower than the previous measurement.
description: 4 pages 2 figures
Mathias Wagner, Die Schmugglergesellschaft. Informelle Ökonomien an der Ostgrenze der Europäischen Union. Eine Ethnographie
Creators: name: Kochanowski, Jerzy
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 2 (2013): Nationalisierung und Pragmatismus. Staatliche Institutionen und Minderheiten in Polen 1918-1939
Forward neutron single transverse spin asymmetry AN in high energy polarized p+A collisions at PHENIX
Creators: name: Kim, Minjung
Publisher: name: Zenodo
Year: 2021
Subjects: zs16
phenix
neutron
forward-rapidity
transverse spin asymmetry
run15
p+al
p+au
spin
zdc
smd
bbc
correlations

description: Talk presented at the Zimanyi School 2016 conference
AtLAST: Science Cases for a 50 m Class Single Dish sub-mm Telescope
Creators: name: Bertoldi, Frank
name: Klaassen, P.
name: AtLAST Science Working Groups
Publisher: name: Zenodo
Year: 2019

description: AtLAST is a international effort to study the scientific merit for and possible technical implementation of a large-aperture sub-mm single dish telescope to complement ALMA and serve future submm facility needs.  AtLAST is driven also by the need for a platform to host the powerful next-generation MKID cameras. Much like the SDSS but at sub-mm and mm wavelengths, the capability for low resolution imaging spectroscopy with a wide field-of-view enables a census of continuum and line emission throughout the visible universe. We sketch some science cases for such a large survey telescope.
Can the BZ mechanism power steady jets?
Creators: name: King, A. R.
name: Pringle, J. E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We consider the Blandford-Znajek (BZ) mechanism for extracting black hole spin energy to drive astrophysical jets. Analyses of the BZ mechanism generally take no account of any electric charge on the black hole. But, as noted by Wald and others, if the medium surrounding the black hole is an ionized plasma with mobile charges, then a spinning hole quickly acquires an electric charge. The effect of this charge is to nullify the electric field structures which drive the BZ mechanism. Since jets are now observed in a wide variety of classes of accreting objects, most of which do not contain a central black hole, it seems likely that the jet driving mechanism in all astrophysical objects uses energy directly from the accretion disc, rather than black hole spin.
description: 4 pages, accepted for publication in ApJL, proof version
Simplification of the local full vertex in the impurity problem in DMFT and its applications for the nonlocal correlation
Creators: name: Mizuno, Ryota
name: Ochi, Masayuki
name: Kuroki, Kazuhiko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The two-particle vertex function is crucial for the diagrammatic extensions beyond DMFT for the nonlocal fluctuation. However, estimating the two-particle quantities is still a challenging task. In this study, we propose a simplification of the local two-particle full vertex and, using the simplified full vertex, we develop two methods to take into account the nonlocal fluctuation. We apply these methods to several models and confirm that our methods can capture important behaviors such as the pseudo gap in the DMFT + nonlocal calculation. In addition, the numerical costs are largely reduced compared to the conventional methods.
description: 18 pages, 17 figures, 1table. arXiv admin note: substantial text overlap with arXiv:2101.04466
Estimation Technique for a Contact Point Between two Materials in a Stationary Heat Transfer Problem
Creators: name: Umbricht, Guillermo Federico
name: Rubio, Diana
name: Tarzia, Domingo Alberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 34A55, 34B08, 80A20, 80A23

description: An inverse problem for a stationary heat transfer process is studied for a totally isolated bar on its lateral surface, of negligible diameter, made up of two consecutive sections of different, isotropic and homogeneous materials. At the left boundary, a Dirichlet type condition is imposed that represents a constant temperature source while a Robin type condition that models the heat dissipation by convection is considered at the right one. Many articles in the literature focus on thermal and stress analysis at the interface but no one is dedicated to the estimation of the contact point location between the two materials. In this work, it is assumed that the interface position is unknown. A technique to determine it from a unique noisy flow measurement at the right boundary is introduced. Necessary and sufficient conditions are derived in order to obtain the estimation of the interface point from a heat flux measured at the right boundary. Numerical solutions are obtained together with an expression for the estimation error. Moreover, an elasticity analysis is included to study the influence of data errors. The results show that our approach is useful for determining the location of the materials interface.
description: 8 pages, 6 figures
Distortions of the Helicoid
Creators: name: Bernstein, Jacob
name: Breiner, Christine
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 49Q05, 53A10

description: Colding and Minicozzi have shown that an embedded minimal disk $0\inΣ\subset B_R$ in $\Real^3$ with large curvature at 0 looks like a helicoid on the scale of $R$. Near 0, this can be sharpened: on the scale of $|A|^{-1}(0)$, $Σ$ is close, in a Lipschitz sense, to a piece of a helicoid. We use surfaces constructed by Colding and Minicozzi to see this description cannot hold on the scale $R$.
description: 4 pages, 3 figures
On massive spin-3/2 in the Fradkin-Vasiliev formalism
Creators: name: Khabarov, M. V.
name: Zinoviev, Yu. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: One of the possible approaches to the construction of massive higher spin interactions is to use their gauge invariant description based on the introduction of the appropriate set of Stueckelberg fields. Recently, the general properties of such approach were investigated in [1]. The main findings of this work can be formulated in two statements. At first, there always exist enough field redefinitions to bring the vertex into abelian form where there are some corrections to the gauge transformations but the gauge algebra is undeformed. At second, with the further (as a rule higher derivative) field redefinitions one can bring the vertex into trivially gauge invariant form expressed in terms of the gauge invariant objects of the free theory. Our aim in this work is to show (using a simple example) how these general properties are realised in the so-called Fradkin-Vasiliev formalism and to see the effects (if any) that the presence of massless field, and hence of some unbroken gauge symmetries, can produce. As such example we take the gravitational interaction for massive spin-3/2 field so we complete the investigation started in [2] relaxing all restrictions on the number of derivatives and allowed field redefinitions. We show that in spite of the presence of massless spin-2 field, the first statement is still valid, while there exist two abelian vertices which are not equivalent on-shell to the trivially gauge invariant ones. Moreover, it is one of this abelian vertices that reproduce the minimal interaction for massive spin-3/2.
description: 14 pages
Scalable Multi-Task Transfer Learning for Molecular Property Prediction
Creators: name: Lee, Chanhui
name: Jeong, Dae-Woong
name: Ko, Sung Moon
name: Lee, Sumin
name: Kim, Hyunseung
name: Yim, Soorin
name: Han, Sehui
name: Kim, Sungwoong
name: Lim, Sungbin
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Molecules have a number of distinct properties whose importance and application vary. Often, in reality, labels for some properties are hard to achieve despite their practical importance. A common solution to such data scarcity is to use models of good generalization with transfer learning. This involves domain experts for designing source and target tasks whose features are shared. However, this approach has limitations: i). Difficulty in accurate design of source-target task pairs due to the large number of tasks, and ii). corresponding computational burden verifying many trials and errors of transfer learning design, thereby iii). constraining the potential of foundation modeling of multi-task molecular property prediction. We address the limitations of the manual design of transfer learning via data-driven bi-level optimization. The proposed method enables scalable multi-task transfer learning for molecular property prediction by automatically obtaining the optimal transfer ratios. Empirically, the proposed method improved the prediction performance of 40 molecular properties and accelerated training convergence.
Christian Tilitzki, Die Albertus-Universität Königsberg. Ihre Geschichte von der Reichsgründung bis zum Untergang der Provinz Ostpreußen (1871-1945). Band 1: 1871-1918
Creators: name: Krämer, Matthias
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 4 (2014)
Light charged particle emission from hot $^{32}$S$^{*}$ formed in $^{20}$Ne + $^{12}$C reaction
Creators: name: Dey, Aparajita
name: Bhattacharya, S.
name: Bhattacharya, C.
name: Banerjee, K.
name: Rana, T. K.
name: Kundu, S.
name: Banerjee, S. R.
name: Mukhopadhyay, S.
name: Gupta, D.
name: Saha, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Inclusive energy distributions for light charged particles ($p, d, t$ and $α$) have been measured in the $^{20}$Ne (158, 170, 180, 200 MeV) + $^{12}$C reactions in the angular range 10$^{o}$ -- 50$^{o}$. Exclusive light charged particle energy distribution measurements were also done for the same system at 158 MeV bombarding energy by in-plane light charged particle -- fragment coincidence. Pre-equilibrium components have been separated out from proton energy spectra using moving source model considering two sources. The data have been compared with the predictions of the statistical model code CASCADE. It has been observed that significant deformation effects were needed to be introduced in the compound nucleus in order to explain the shape of the evaporated $d, t$ energy spectra. For protons, evaporated energy spectra were rather insensitive to nuclear deformation, though angular distributions could not be explained without deformation. Decay sequence of the hot $^{32}$S nucleus has been investigated through exclusive light charged particle measurements using the $^{20}$Ne (158 MeV) + $^{12}$C reaction. Information on the sequential decay chain has been extracted through comparison of the experimental data with the predictions of the statistical model. It is observed from the present analysis that exclusive light charged particle data may be used as a powerful tool to probe the decay sequence of hot light compound systems.
description: 29 pages, 17 figures
Alexander Behrens (Hrsg.), „Durfte Brandt knien?“. Der Kniefall in Warschau und der deutsch-polnische Vertrag. Eine Dokumentation der Meinungen
Creators: name: Żarski, Krzysztof
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 2 (2013): Nationalisierung und Pragmatismus. Staatliche Institutionen und Minderheiten in Polen 1918-1939
Anisotropic Microgels show their Soft Side
Creators: name: Nickel, Anne C.
name: Kratzenberg, Timon
name: Bochenek, Steffen
name: Schmidt, Maximilian M.
name: Rudov, Andrey A.
name: Falkenstein, Andreas
name: Potemkin, Igor I.
name: Crassous, Jérôme J.
name: Richtering, Walter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Anisotropic, submicrometer sized particles are versatile systems providing interesting features in creating ordering in 2-dimensional systems. Combining hard ellipsoids with a soft shell further enhances the opportunities to trigger and control order and alignment. In this work, we report a rich 2D phase behavior and show how softness affects the ordering of anisotropic particles at fluid oil-water interfaces. Three different core-shell systems were synthesized such that they have the same elliptical hematite-silica core but differ with respect to thickness and stiffness of the soft microgel shell. Compression isotherms, the shape of individual core-shell microgel as well as their 2D order at a decane-water interface are investigated by means of the Langmuir-Blodgett technique combined with ex-situ Atomic Force Microscopy (AFM) imaging, as well as by Disspiative Particle Dynamics (DPD) simulations. We show how softness, size and anisotropy of the microgel shell affect the side-to-side vs. tip-to-tip ordering of anisotropic hybrid microgels as well as the alignment with respect to the direction of compression in the Langmuir trough. A large and soft microgel shell leads to an ordered structure with a tip-to-tip alignment directed perpendicular to the direction of compression. In contrast, a thin and harder microgel shell leads to side-to-side ordering orientated parallel to the compression direction. In addition, the thin and harder microgel shell induces clustering of the microgels in the dilute state indicating the presence of strong capillary interactions. Our findings highlight the relevance of softness for the complex ordering of anisotropic hybrid microgels at interfaces.
The space of homogeneous preserving semistar operations on graded domains
Creators: name: Sahandi, Parviz
Publisher: name: arXiv
Year: 2024
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics

description: Let $R=\bigoplus_{α\inΓ}R_α$ be a graded integral domain. In this paper we study the space of homogeneous preserving semistar operations on $R$. We show if $\star$ is a homogeneous preserving semistar operation on $R$, then $\star_a$ is also homogeneous preserving. Let $KR(R,b)$ be the homogeneous Kronecker function ring of $R$ with respect to the $b$-operation. It is shown that the set of valuation overrings of $KR(R,b)$, endowed with the Zariski topology, is homeomorphism to $Zar_h(R)$, the set of gr-valuation overrings of $R$, endowed with the Zariski topology. We also show that the set $SStar_{f,hp}(R)$ of finite type, homogeneous preserving semistar operations on $R$, endowed with the Zariski topology, is a spectral space.
Fractional Derivative Approach to the Self-gravitation Equation
Creators: name: Pedraza, Juan F.
name: Ramos-Caro, Javier
name: Gonzalez, Guillermo A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A new formalism is presented for finding equilibrium distribution functions for axisymmetric systems. The formalism, obtainded by using the concept of fractional derivatives, generalizes the methods of Fricke (1952), Kalnajs (1972) and Jiang & Ossipkov (2007), and has the advantage that can be applied to a wider variety of models. We found that this approach can be applied both to tridimensional systems and to flat systems, without the necessity of dealing with a pseudo-volume mass density. As an application, we obtain the distribution functions of the Binney's logarithmic model and of the Mestel disc.
description: 5 pages, no figures, submitted to MNRAS
X-ray Luminosity of Decades-Old Supernovae
Creators: name: Ramakrishnan, Vandana
name: Dwarkadas, Vikram V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The transition from supernovae (SNe) to supernova remnants (SNRs) remains poorly understood, given the age gap between well-studied examples of the two. In order to bridge this gap, we analysed archival Chandra data for some of the oldest supernovae detected in X-rays, in order to extend their light curves out to late times. We fitted the spectra with thermal models. All the SNe with multiple X-ray data points were found to have similar X-ray luminosity, which was decreasing with time. The X-ray luminosity will likely continue to decrease while the SNe are evolving in a wind medium, but is anticipated to increase in the Sedov phase when the SNe are interacting with a constant density interstellar medium, bringing it in line with observed SNRs.
description: Published in RNAAS.3 pages, 1 figure. Part of Focus on AAS 238 issue
The Coronavirus is a Bioweapon: Analysing Coronavirus Fact-Checked Stories
Creators: name: Ng, Lynnette Hui Xian
name: Carley, Kathleen M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The 2020 coronavirus pandemic has heightened the need to flag coronavirus-related misinformation, and fact-checking groups have taken to verifying misinformation on the Internet. We explore stories reported by fact-checking groups PolitiFact, Poynter and Snopes from January to June 2020, characterising them into six story clusters before then analyse time-series and story validity trends and the level of agreement across sites. We further break down the story clusters into more granular story types by proposing a unique automated method with a BERT classifier, which can be used to classify diverse story sources, in both fact-checked stories and tweets.
SN 2001em: No Jet-Driven Gamma Ray Burst Event
Creators: name: Bietenholz, M. F.
name: Bartel, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on our second-epoch VLBI and VLA observations of the Type Ib/c supernova 2001em, five years after the explosion. It was suggested that SN 2001em might be a jet-driven gamma ray burst (GRB), with the jet oriented near the plane of the sky, which would entail relativistic expansion or motion. Our VLBI image shows that SN 2001em is still unresolved five years after the explosion. For a distance of 83 Mpc (H_0 = 70 km/s/Mpc), the nominal expansion velocity is 5800 +/- 10,000 km/s, and the proper motion is 33,000 +/- 34,000 km/s. Our values are inconsistent with either relativistic expansion or motion, but are consistent with the non-relativistic expansion speeds and small proper motions seen in other supernovae. In particular these values are consistent with radio emission from SN 2001em being due to normal, non-relativistic supernova ejecta interacting with the circumstellar medium. Our VLA observations show a power-law decay in flux density since the time of the peak in the 8.4 GHz radio lightcurve in ~2003.
description: 5 pages, 2 figs, accepted for publication in ApJ Letters; added references
Friedhelm Boll, Krzysztof Ruchniewicz (Hrsg.), Nie mehr eine Politik über Polen hinweg. Willy Brandt und Polen
Creators: name: Żarski, Krzysztof
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 2 (2013): Nationalisierung und Pragmatismus. Staatliche Institutionen und Minderheiten in Polen 1918-1939
Signal and Data Transport for the SKA
Creators: name: Grainge, Keith
Publisher: name: Zenodo
Year: 2019

description: The SKA will be a transformative radio telescope that will address fundamental unanswered questions about our Universe. The SKA will require high precision timing and will then generate unprecedented volumes of data. The Signal and Data Transport (SADT) Consortium has design the systems that address these requirements. I will discuss the design work undertaken by the SADT Consortium to address these challenges through three separate networks:
• A network to transport the astronomical data (tens of Terabits per second), first from the receivers to a Central Signal Processor and then secondly transport the resultant data out of the telescope site to the Science Data Processor
• A clock ensemble that provides a high accuracy timescale that can be tied to global UTC and a network that then distributes a reference frequency and absolute time to each antenna
• A network that passes control, monitor and service data throughout the telescope.
Two-dimensional Radiation-hydrodynamic Model for Supercritical Disk Accretion Flows onto Neutron Stars
Creators: name: Ohsuga, Ken
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We performed two-dimensional radiation hydrodynamic simulations of supercritical accretion flows around neutron stars (NSs). In contrast with the accretion flows onto black holes (BHs), we find that the shell-shaped high-density regions form around the NSs, since the radiation force is enhanced in the innermost regions. The enhanced radiation force drives strong outflows above and below the disk. The mass-accretion rate onto the NS exceeds the critical rate, $L_{\rm E}/c^2$, with $L_{\rm E}$ being the Eddington luminosity. However it is about $20-30%$ of that onto the BH, under the condition that we employ the same mass-input rate, $\dot{M}_{\rm input}$, which is mass injected from the outer disk boundary per unit time. The mass-outflow rate is a few-times larger in flows around NSs than in flows around BHs. The supercritical NS accretion flows mainly release the accretion energy as the kinetic energy of the outflows, though the disk luminosity is predominant over the kinetic energy output rate in the BH accretion flows. The resulting velocity and mass-outflow rate of the outflows are $0.2-0.3c$ and $150-700L_{\rm E}/c^2$, respectively, for the mass-input rate of $3\times 10^2\lsim \dot{M}_{\rm input}/(L_{\rm E}/c^2)\lsim 3\times 10^3$. This implies that the SS433 jets can be roughly explained by the supercritical accretion onto a NS. However, the collimation angle of the outflows in our simulations ($\sim 20^\circ$) is larger than that of the SS433 jets (a few degrees).
description: 9 pages, 6 figures, accepted for publication in PASJ
Hyperbolicity of general deformations: proofs
Creators: name: Zaidenberg, Mikhail
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 14J70, 32J25

description: We modify the deformation method explored previously in a joint work of B. Shiffman and the author, in order to construct further examples of Kobayashi hyperbolic surfaces in the projective 3-space of any even degree starting with degree 8.
description: 10p. This text has intersection with another one (``Hyperbolicity of general deformations", arXiv:0709.2883v1 [math.AG]) of the same author. The difference is: the present one contains complete proofs, whereas the previous one is the content of the authors talk at the conference ``Effective Aspects of Complex Hyperbolic Varieties", Aber Wrac'h, France, September 10-14, 2007
Aneurinae Douglas & Scott 1865
Creators: name: Heiss, Ernst
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aradidae

description: Subfamily Aneurinae Douglas & Scott, 1865
Aneurinae Douglas & Scott, 1865:26 (Aneuridae, as family). Type genus: Aneurus Curtis, 1825.
description: Published as part of Heiss, Ernst, 2012, Annotated catalogue of the flat bug family Aradidae Brullé, 1836 of Madagascar and adjacent islands (Hemiptera: Heteroptera), pp. 45-63 in Zootaxa 3426 (1) on page 46, DOI: 10.11646/zootaxa.3426.1.3, http://zenodo.org/record/214110
The ARI-L development project
Creators: name: Massardi, Marcella
Publisher: name: Zenodo
Year: 2019

description: The Additional Representative Images for Legacy (ARI-L, PI: Massardi) project aims to increase the legacy value of the ALMA Science Archive (ASA) by bringing the reduction level of ALMA data from Cycles 2-4 close to the level of the more recent Cycles processed with the ALMA Imaging Pipeline.
The project has been recently approved by ESO and JAO and will soon start producing and ingesting into the ASA a uniform set of full data cubes and continuum images covering at least 70\% of the data from Cycles 2-4. These cubes will complement the much smaller QA2-generated image products, which cover only a small fraction (< 10\%) of the observed data for those cycles.
I will present the project rationale and its operational plan.
A Two-Frequency-Two-Coupling model of coupled oscillators
Creators: name: Hong, Hyunsuk
name: Martens, Erik A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We considered the phase coherence dynamics in a Two-Frequency and Two-Coupling (TFTC) model of coupled oscillators, where coupling strength and natural oscillator frequencies for individual oscillators may assume one of two values (positive/negative). The bimodal distributions for the coupling strengths and frequencies are either correlated or uncorrelated. To study how correlation affects phase coherence, we analyzed the TFTC model by means of numerical simulations and exact dimensional reduction methods allowing to study the collective dynamics in terms of local order parameters. The competition resulting from distributed coupling strengths and natural frequencies produces nontrivial dynamic states. For correlated disorder in frequencies and coupling strengths, we found that the entire oscillator population splits into two subpopulations, both phase-locked (Lock-Lock) or one phase-locked, and the other drifting (Lock-Drift), where the mean-fields of the sub-populations maintain a constant non-zero phase difference. For uncorrelated disorder, we found that the oscillator population may split into four phase-locked subpopulations, forming phase-locked pairs which are either mutually frequency-locked (Stable Lock-Lock-Lock-Lock) or drifting (Breathing Lock-Lock-Lock-Lock), thus resulting in a periodic motion of the global synchronization level. Finally, we found for both types of disorder that a state of Incoherence exists; however, for correlated coupling strengths and frequencies, incoherence is always unstable, whereas it is only neutrally stable for the uncorrelated case. Numerical simulations performed on the model show good agreement with the analytic predictions. The simplicity of the model promises that real-world systems can be found which display the dynamics induced by correlated/uncorrelated disorder.
ALMA Hardware In The Loop simulation environment
Creators: name: Saez Madain, Alejandro Felipe
name: Corder, S
name: Shen, T-Z
Publisher: name: Zenodo
Year: 2019

description: The Hardware in the Loop development project is intended to return considerable (~5%) successful observing time annually to the astronomy community through reductions in allocation of production hardware test resources. This is accomplished by providing a simulation platform that attempts to incorporate, in a flexible way, as much of the actual hardware as feasible. In the most realistic case, four actual antennas would be correlated with 12 simulated antennas to provide some real, on-sky data, running on a completely different software/firmware setup, without any impact whatsoever on PI science. It is also a potential source of time saving in the commissioning of major development projects
Crystalline ZnMgSe:Cr2+: a new material for active elements of tunable IR-lasers
Creators: name: Zagoruiko, Yu. A.
name: Kovalenko, N. O.
name: Fedorenko, O. A.
name: Khristyan, V. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Obtained is a new thermostable material for active elements of tunable IR-lasers - Zn1-xMgxSe:Cr2+ single crystals. The position of the absorption band of Cr2+ ions in wurtzite-type Zn0.8Mg0.2Se matrix is established.
description: 2 pages, 1 figure, Journal website: http://www.isc.kharkov.com/journal/index.html
Planar-integration of  SIS Heterodyne Arrays
Creators: name: Shan, Wenlei
Publisher: name: Zenodo
Year: 2019

description: We have been conducting studies on planar integrated arrayed SIS receiver for wide field-of-view observation. This approach has the following features: (1)  coupling of signal and LO to a planar integrated mixer chip through membrane-based waveguide probes, (2) on-chip RF devices that include OMTs, hybrid bridges, and LO couplers, and (3) a much simplified LO metal waveguide distribution network that is embedded in the mixer mount. For proof-of-concept, we have prototyped a single-pixel integrated SIS receiver, aiming to be readily extend to an array. The prototype receiver is designed at 2 mm wavelength to be capable of dual-polarization and balanced mixing.The mixer ICs were assessed in a 4 K cryostat.  The cross-polarization level of the horn/OMT combination was measured with a standard near-field beam scanner. Results of initial measurement  provide clear evidence of the feasibility of this planar integration approach.
Dirk Mellies, Modernisierung in der Provinz? Der Regierungsbezirk Stettin im 19. Jahrhundert
Creators: name: Holste, Karsten
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 2 (2014)
Detection of spruce beetle (Dendrotonus rufipennis) infestations using aerial photographs
Creators: name: Churcher, J. Joseph
Publisher: name: University of British Columbia
Year: 2010

description: Normal colour (Kodak 2448) and colour infrared (Kodak 2443) aerial photographs (1:2000) of spruce trees infested with the spruce beetle (Dendroctonus rufipennis) were obtained during the summer and fall of 1982. The study site was located southeast of Prince George, B.C., on the north shore of Narrow Lake. The 70 mm stereo-transparencies were studied visually, the health status of each tree was determined, and the classifications compared to actual health categories as determined from extensive ground truthing. Densities of the individual dye-layers were measured, ratios of these densities calculated, and the data transformed as described by Moore (1980) and Hall et al. (1983). The densitometric variables were analysed using both analysis of variance and discriminant analysis computer programs available through the University of British Columbia Computing Centre. Analysis of the healthy, strip-attack, 1981-attack and dead tree images led to the following conclusions. The advantages of colour infrared film do not surpass those of the normal colour film, and vice versa. The decision of which film type to use should be determined by the photo-interpreter. Visual analysis of the health classes studied in this research is sufficient, without densitometric analysis. If densitometry is used, the basic dye-layer measurements and ratios are adequate. The Moore transformations do not provide any further information. The ratio between the green- and red-sensitive dye-forming layers, obtainable from both normal colour and colour infrared films, was the one variable that consistently separated the images of healthy, attacked and dead trees in the analyses of variance. This variable also figured prominently in the discriminant analyses. An optimal photographic scale for infestation detection and the minimum amount of time after attack required by a tree to show signs of strain on aerial photographs have yet to be determined. These questions must be answered before this survey technique could be termed an operational procedure in spruce beetle management.
Filip Bláha, Frauenkörper im Fokus. Wahrnehmung zwischen Straße und Turnplatz in Prag und Dresden vor dem Ersten Weltkrieg
Creators: name: Wiederkehr, Stefan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 4 (2014)