cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High- K, two-quasiparticle states in Gd 160
Creators: name: Carpenter, M.P.
name: Hartley, D.J.
name: Sethi, J.
name: Savard, G.
name: Hoffman, C.R.
name: Kondev, F.G.
name: Copp, P.
name: Zhu, S.
name: Ayangeakaa, A.D.
name: Clark, J.A.
name: Janssens, R.V.F.
name: Lauritsen, T.
name: Hicks, K.
name: Bottoni, S.
name: Orford, R.
Publisher: name: American Physical Society
Year: 2020

description: Excited states in Gd160 were populated via β decay from the low- and high-spin isomers in Eu160. The high-spin, Kπ=5- state feeds several two-quasiparticle levels, as well as a sequence associated with a γ vibration and a Kπ=4+, hexadecapole vibrational structure. The decay scheme was significantly improved with the observation of new transitions and states when compared with the two competing level schemes from over four decades ago. Configuration assignments for some of the multiquasiparticle levels have been suggested, based upon decay properties, systematics from neighboring nuclei, and comparisons with theoretical calculations. In addition, 15 new low-spin states and approximately 60 new transitions were observed resulting from the decay of the low-spin Eu160 isomer.
Abstraction Recovery for Scalable Static Binary Analysis
Creators: name: Schwartz, Edward J.
Publisher: name: Figshare
Year: 2018
Subjects: subject: Computer Engineering
subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Many source code tools help software programmers analyze programs as they are being developed, but such tools can no longer be applied once the final programs are shipped to the user. This greatly limits users, security experts, and anyone other than the programmer who wishes to perform additional testing and
program analysis. This dissertation is concerned with the development of scalable techniques for statically analyzing binary programs, which can be employed by anyone who has access to the binary. Unfortunately, static binary analysis is often more difficult than static source code analysis because the abstractions that are the basis of source code programs, such as variables, types, functions, and control flow structure, are not explicitly present in binary programs. Previous approaches work around the the lack of abstractions by
reasoning about the program at a lower level, but this approach has not scaled as well as equivalent source code techniques that use abstractions.
This dissertation investigates an alternative approach to static binary analysis which is called abstraction recovery. The premise of abstraction recovery is that since many binaries are actually compiled from an abstract source language which is more suitable for analysis, the first step of static binary analysis should be to recover such abstractions. Abstraction recovery is shown to be feasible in two real-world applications. First, C abstractions are recovered by a newly developed decompiler. The second application recovers gadget abstractions to automatically generate return-oriented programming (ROP) attacks. Experiments using the decompiler demonstrate that recovering C abstractions improves scalability over low-level analysis, with applications such as verification and detection of buffer overflows seeing an average of 17× improvement.
Similarly, gadget abstractions speed up automated ROP attacks by
99×.  Though some binary analysis problems do not lend themselves to abstraction recovery because they reason about low-level or syntactic details,
abstraction recovery is an attractive alternative to conventional low-level analysis when users are interested in the behavior of the original abstract program from which a binary was compiled, which is often the case.
GOLLUM: a next-generation simulation tool for electron, thermal and spin transport
Creators: name: Ferrer, J.
name: Lambert, C. J.
name: Garcia-Suarez, V. M.
name: Manrique, D. Zs.
name: Visontai, D.
name: Oroszlany, L.
name: Rodriguez-Ferradas, R.
name: Grace, I.
name: Bailey, S. W. D.
name: Gillemot, K.
name: Sadeghi, H.
name: Algharagholy, L. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have developed an efficient simulation tool 'GOLLUM' for the computation of electrical, spin and thermal transport characteristics of complex nanostructures. The new multi-scale, multi-terminal tool addresses a number of new challenges and functionalities that have emerged in nanoscale-scale transport over the past few years. To illustrate the flexibility and functionality of GOLLUM, we present a range of demonstrator calculations encompassing charge, spin and thermal transport, corrections to density functional theory such as LDA+U and spectral adjustments, transport in the presence of non-collinear magnetism, the quantum-Hall effect, Kondo and Coulomb blockade effects, finite-voltage transport, multi-terminal transport, quantum pumps, superconducting nanostructures, environmental effects and pulling curves and conductance histograms for mechanically-controlled-break-junction experiments.
description: 66 journal pages, 57 figures
Multinucleon transfer in the interaction of 977 MeV and 1143 MeV Hg 204 with Pb 208
Creators: name: Carpenter, M.P.
name: Lauritsen, T.
name: McCutchan, E.A.
name: Janssens, R.V.F.
name: Zhu, S.
name: Loveland, W.
name: Amro, B.M.S.
name: Desai, V.V.
name: Ayangeakaa, A.D.
name: Greene, J.P.
name: Walters, W.B.
name: Barrett, J.S.
name: Pica, A.
Publisher: name: American Physical Society
Year: 2020

description: A previous study of symmetric collisions of massive nuclei has shown that current models of multinucleon transfer (MNT) reactions do not adequately describe the transfer product yields. To gain further insight into this problem, we have measured the yields of MNT products in the interaction of 977 (E/A=4.79 MeV) and 1143 MeV (E/A=5.60 MeV) Hg204 with Pb208. We find that the yield of multinucleon transfer products are similar in these two reactions and are substantially lower than those observed in the reaction of 1257 MeV (E/A=6.16 MeV) Hg204+Pt198. We compare our measurements with the predictions of the GRAZING-F, dinuclear systems (DNS), and improved quantum molecular dynamics (ImQMD) models. For the observed isotopes of the elements Au, Hg, Tl, Pb, and Bi, the measured values of the MNT cross sections are orders of magnitude larger than the predicted values. Furthermore, the various models predict the formation of nuclides near the N=126 shell, which are not observed.
Analysis of high-resolution FEROS spectroscopy for a sample of variable B-type stars assembled from TESS photometry
Creators: name: Gebruers, Sarah
name: Tkachenko, Andrew
name: Bowman, Dominic M.
name: Van Reeth, Timothy
name: Burssens, Siemen
name: IJspeert, Luc
name: Mahy, Laurent
name: Straumit, Ilya
name: Xiang, Maosheng
name: Rix, Hans-Walter
name: Aerts, Conny
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Spectroscopic data are necessary to break degeneracies in asteroseismic modelling of the interior structure in high- and intermediate-mass stars. We derive precise photospheric stellar parameters for a sample of 166 B-type stars with TESS light curves, suitable for detailed asteroseismic studies, through a homogeneous spectroscopic analysis. The variability types of these stars are classified based on all currently available TESS sectors. We obtained high-resolution spectra for all 166 targets with the FEROS spectrograph in the context of a large program. The Least-Squares Deconvolution method is employed to investigate spectral line profile variability and to detect binary systems. We identify 26 spectroscopic double-lined binaries; the remainder of the sample are 42 supergiants in the LMC galaxy and 98 Galactic stars. The spectra of the Galactic stars are analysed with the zeta-Payne, a machine learning-based spectrum analysis algorithm. We determine the five main surface parameters with average formal precisions of 70 K (Teff), 0.03 dex (logg), 0.07 dex ([M/H]), 8 km/s (vsini), and 0.7 km/s (vmicro). The average internal uncertainties we find for FEROS spectra with our spectrum analysis method are 430 K (Teff), 0.12 dex (logg), 0.13 dex ([M/H]), 12 km/s (vsini), and 2 km/s (vmicro). We find spectroscopic evidence that eight of the 98 Galactic targets are fast rotating g-mode pulsators occurring in between the slowly pulsating B (SPB) stars and delta Scuti instability strips. The g-mode frequencies of these pulsators are shifted to relatively high frequency values due to their rotation. Their apparently too low Teff relative to the SPB instability region can in most cases be explained by the gravity darkening effect. We also discover 13 new HgMn stars of which only one is found in a spectroscopic binary, resulting in a biased and therefore unreliable low binary rate of only 8%.
description: 17 pages, 13 figures, tables A.1 and A.2 will only be available in electronic form at the CDS. Accepted for publication in Astronomy and Astrophysics
Acting under Uncertainty for Information Gathering and Shared Autonomy
Creators: name: Javdani, Shervin
Publisher: name: Figshare
Year: 2018
Subjects: subject: 80101 Adaptive Agents and Intelligent Robotics
subject: FOS: Computer and information sciences

description: Acting under uncertainty is a fundamental challenge for any decision maker in the real world. As uncertainty is often the culprit of failure, many prior works attempt to reduce the problem to one with a known state. However, this fails to account for a key property of acting under uncertainty: we can often gain utility while uncertain. This thesis presents methods that utilize this property in two domains: active information gathering and shared autonomy. For active information gathering, we present a general framework for reducing uncertainty just enough to make a decision. To do so, we formulate the Decision Region Determination (DRD) problem, modelling how uncertainty impedes decision making. We present two methods for solving this problem, differing in their computational efficiency and performance bounds. We show that both satisfy adaptive submodularity, a natural diminishing returns property that imbues efficient greedy policies with near-optimality guarantees. Empirically, we show that our methods outperform those which reduce uncertainty without considering how it affects decision making. For shared autonomy, we first show how the general problem of assisting with an unknown user goal can be modelled as one of acting under uncertainty. We then present our framework, based on Hindsight Optimization or QMDP, enabling us assist for a distribution of user goals by minimizing the expected cost. We evaluate our framework on real users, demonstrating that our method achieves goals faster, requires less user input, decreases user idling time, and results in fewer user-robot collisions than those which rely on predicting a single user goal. Finally, we extend our framework to learn how user behavior changes with assistance, and incorporate this model into cost minimization.
Evaluating Haskell expressions in a tutoring environment
Creators: name: Olmer, Tim
name: Heeren, Bastiaan
name: Jeuring, Johan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computers and Society (cs.CY)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: A number of introductory textbooks for Haskell use calculations right from the start to give the reader insight into the evaluation of expressions and the behavior of functional programs. Many programming concepts that are important in the functional programming paradigm, such as recursion, higher-order functions, pattern-matching, and lazy evaluation, can be partially explained by showing a stepwise computation. A student gets a better understanding of these concepts if she performs these evaluation steps herself. Tool support for experimenting with the evaluation of Haskell expressions is currently lacking. In this paper we present a prototype implementation of a stepwise evaluator for Haskell expressions that supports multiple evaluation strategies, specifically targeted at education. Besides performing evaluation steps the tool also diagnoses steps that are submitted by a student, and provides feedback. Instructors can add or change function definitions without knowledge of the tool's internal implementation. We discuss some preliminary results of a small survey about the tool.
description: In Proceedings TFPIE 2014, arXiv:1412.4738
γ -ray spectroscopy of astrophysically important states in Ca 39
Creators: name: Ayangeakaa, A.D.
name: Varner, R.L.
name: Cha, S.M.
name: Blackmon, J.C.
name: Zhu, S.
name: Walter, D.
name: Rasco, B.C.
name: Allen, J.M.
name: Seweryniak, D.
name: Anderson, J.T.
name: Chipps, K.A.
name: Lee, E.J.
name: Pain, S.D.
name: Cizewski, J.A.
name: Tan, W.P.
name: Carpenter, M.P.
name: Sims, H.
name: Thompson, P.
name: Baugher, T.
name: Ahn, S.
name: Febbraro, M.
name: Burcher, S.
name: Lepailleur, A.
name: Smith, K.
name: Jiang, C.L.
name: O'Malley, P.D.
name: Hall, M.R.
name: Hu, J.
name: Hall, O.
name: Thornsberry, C.
name: Santiago-Gonzalez, D.
name: Wilson, G.L.
name: Ratkiewicz, A.
name: Bardayan, D.W.
name: Chae, K.Y.
name: Jones, K.L.
name: Ota, S.
Publisher: name: American Physical Society
Year: 2020

description: Background: Nova explosions synthesize elements up to A≃40, and discrepancies exist between calculated and observed abundances of Ar and Ca created in the explosion. The K38(p,γ)Ca39 reaction rate has been shown to be influential on these isotopic abundances at the endpoint of nova nucleosynthesis. The energies of the three most important resonances, corresponding to Jπ=5/2+ excited states in the Ca39 nucleus above the proton separation threshold, are uncertain and one has been measured with conflicting values [Er=679(2) versus Er=701(2) keV] in previous experiments. Purpose: Reducing the uncertainties on the resonance energies would allow for a better understanding of the reaction rate. To improve these uncertainties, we searched for γ rays from the depopulation of the corresponding excited states in Ca39. Methods: We report a new measurement of these resonance energies via the observation of previously unobserved γ-ray transitions. These transitions were observed by studying the Ca40(3He,αγ)Ca39 reaction with Gammasphere ORRUBA Dual Detectors for Experimental Structure Studies (GODDESS). The updated resonance energies were then used to calculate the K38(p,γ)Ca39 reaction rate and assess its uncertainties. Results: In total, 23 new transitions were found, including three γ-ray transitions corresponding to the three Jπ=5/2+ states of astrophysical interest at energies of 6156.2(16), 6268.8(22), and 6470.8(19) keV. These correspond to resonance energies in the K38(p,γ)Ca39 reaction of 386(2), 498(2), and 701(2) keV. Conclusions: Updated K38(p,γ)Ca39 reaction rate calculations show a reduced upper limit at nova temperatures. However, the lower-than-previously-measured energy of the 498-keV resonance and uncertainty in its resonance strength increases the upper limit of the rate close to previous estimates at 0.4 GK.
Consid{é}rant la d{é}pendance dans la th{é}orie des fonctions de croyance
Creators: name: Chebbah, Mouna
name: Kharoune, Mouloud
name: Martin, Arnaud
name: Yaghlane, Boutheina Ben
Publisher: name: arXiv
Year: 2015
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In this paper, we propose to learn sources independence in order to choose the appropriate type of combination rules when aggregating their beliefs. Some combination rules are used with the assumption of their sources independence whereas others combine beliefs of dependent sources. Therefore, the choice of the combination rule depends on the independence of sources involved in the combination. In this paper, we propose also a measure of independence, positive and negative dependence to integrate in mass functions before the combinaision with the independence assumption.
description: in French
Complete experiment problem for photoproduction of two pseudoscalar mesons on a nucleon in a truncated partial-wave analysis
Creators: name: Fix, A.
name: Dementjev, I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is shown that within a truncated partial wave analysis for photoproduction of two pseudoscalar mesons, it is possible to halve the number of independent partial amplitudes by taking into account parity conservation. In addition, within the framework of the proposed formalism, one can rather easily resolve the double discrete ambiguity arising from the symmetry under complex conjugation of the helicity amplitudes. This leads to essential simplifications of the complete experiment problem, at least as far as mathematical aspects are concerned.
Proton decay of 108 I and its significance for the termination of the astrophysical rp-process
Creators: name: Sethi, J.
name: Woods, P.J.
name: Carpenter, M.P.
name: Janssens, R.V.F.
name: Copp, P.
name: Harker, J.
name: Auranen, K.
name: Khoo, T.L.
name: Hoffman, C.R.
name: Lotay, G.
name: Talwar, R.
name: Rogers, A.M.
name: Zhu, S.
name: Kuvin, S.A.
name: Doherty, D.T.
name: Lauritsen, T.
name: David, H.M.
name: Seweryniak, D.
name: Albers, M.
name: Chiara, C.J.
name: Scholey, C.
name: Walters, W.B.
name: Bottoni, S.
name: Ayangeakaa, A.D.
Publisher: name: Elsevier B.V.
Year: 2019

description: Employing the Argonne Fragment Mass Analyzer and the implantation-decay-decay correlation technique, a weak 0.50(21)% proton decay branch was identified in 108 I for the first time. The 108 I proton-decay width is consistent with a hindered l=2 emission, suggesting a d [Formula presented] origin. Using the extracted 108 I proton-decay Q value of 597(13) keV, and the Q α values of the 108 I and 107 Te isotopes, a proton-decay Q value of 510(20) keV for 104 Sb was deduced. Similarly to the 112,113 Cs proton-emitter pair, the Q p (I108) value is lower than that for the less-exotic neighbor 109 I, possibly due to enhanced proton-neutron interactions in N≈Z nuclei. In contrast, the present Q p (Sb104) is higher than that of 105 Sb, suggesting a weaker interaction energy. For the present Q p (Sb104) value, network calculations with the one-zone X-ray burst model Mazzocchi et al. (2007) [18] predict no significant branching into the Sn-Sb-Te cycle at 103 Sn.
Dynamics of asteroid systems post rotational fission
Creators: name: Ho, Alex
name: Wold, Margrethe
name: Poursina, Mohammad
name: Conway, John T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Asteroid binaries found amongst the Near-Earth objects are believed to have formed from rotational fission. In this paper, we aim to study the dynamical evolution of asteroid systems the moment after fission. The initial condition is modelled as a contact binary, similar to that of Boldrin et al. (2016). Both bodies are modelled as ellipsoids, and the secondary is given an initial rotation angle about its body-fixed $y$-axis. Moreover, we consider six different cases, three where the density of the secondary varies, and three where we vary its shape. The simulations consider 45 different initial tilt angles of the secondary, each with 37 different mass ratios. We start the dynamical simulations at the moment the contact binary reaches a spin fission limit, and our model ensures that the closest distance between the surfaces of the two bodies is always kept at 1 cm. The forces, torques and gravitational potential between the two bodies are modelled using a newly developed surface integration scheme, giving exact results for two ellipsoids. We find that more than 80% of the simulations end with the two bodies impacting, and collisions between the bodies are more common when the density of the secondary is lower, or when it becomes more elongated. When comparing with data on asteroid pairs from Pravec et al. (2019) we find that variations in density and shape of the secondary can account for some of the spread seen in the rotation period for observed pairs. Furthermore, the secondary may also reach a spin limit for surface disruption, creating a ternary/multiple system. We find that secondary fission typically occurs within the first five hours after the contact binary separates, and is more common when the secondary is less dense or more elongated.
description: 15 pages, 14 figures. Accepted for publication in A&A
Influence of Different Subgrid Scale Models in LES of Supersonic Jet Flows
Creators: name: Junqueira-Junior, Carlos
name: Yamouni, Sami
name: Azevedo, Joao Luiz F.
name: Wolf, William
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Current design constraints have encouraged the studies of aeroacoustics fields around compressible jet flows. The present work addresses the numerical study of subgrid scale modeling for unsteady turbulent jet flows as a preliminary step for future aeroacoustic analyses of main engine rocket plumes. An in-house large eddy simulation (LES) tool is developed in order to reproduce high fidelity results of compressible jet flows. In the present study, perfectly expanded jets are considered because the authors want to emphasize the effects of the jet mixing phenomena. The large eddy simulation formulation is written using the finite difference approach, with an explicit time integration and using a second order spatial discretization. The energy equation is carefully discretized in order to model the energy equation of the filtered Navier-Stokes formulation. The classical Smagorinsky model, the dynamic Smagorinsky model and the Vreman models are the chosen subgrid scale closures for the present work. Numerical simulations of perfectly expanded jets are performed and compared with the literature in order to validate and compare the performance of each subgrid closure in the solver.
description: conference paper - AIAA Aviation 2016. arXiv admin note: substantial text overlap with arXiv:2212.12353, arXiv:2212.12365
Is [Y/Mg] a Reliable Age Diagnostic for FGK Stars?
Creators: name: Berger, Travis A.
name: van Saders, Jennifer L.
name: Huber, Daniel
name: Gaidos, Eric
name: Schlieder, Joshua E.
name: Claytor, Zachary R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Current spectroscopic surveys are producing large catalogs of chemical abundances for stars of all types. The yttrium to magnesium ratio, [Y/Mg], has emerged as a candidate age indicator for solar twins in the local stellar neighborhood. However, it is unclear whether it is a viable age diagnostic for more diverse stellar types, so we investigate [Y/Mg] as an age indicator for the FGK-type planet host stars observed by $Kepler$. We find that the [Y/Mg] "Clock" is most precise for solar twins, with a [Y/Mg]/Age slope of $m$ = $-$0.0370 $\pm$ 0.0071 dex/Gyr and $σ_{\mathrm{Age}}$ = 2.6 Gyr. We attribute the lower precision compared to literature results to non-solar twins contaminating our solar twin sample and recommend a 1.5 Gyr systematic uncertainty for stellar ages derived with any [Y/Mg]-Age relation. We also analyzed the [Y/Mg] Clock as a function of $T_{\mathrm{eff}}$, $\log g$, and metallicity individually and find no strong trends, but compute statistically significant [Y/Mg]-Age relations for subsamples defined by ranges in $T_{\mathrm{eff}}$, $\log g$, and metallicity. Finally, we compare [Y/Mg] and rotation ages and find statistically similar trends as for isochrone ages, although we find that rotation ages perform better for GK dwarfs while isochrones perform better for FG subgiants. We conclude that the [Y/Mg] Clock is most precise for solar twins and analogs but is also a useful age diagnostic for FGK stars.
description: 18 pages, 13 figures, 2 tables. Accepted by ApJ
Learn Physics by Programming in Haskell
Creators: name: Walck, Scott N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computers and Society (cs.CY)
subject: Programming Languages (cs.PL)
subject: Physics Education (physics.ed-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We describe a method for deepening a student's understanding of basic physics by asking the student to express physical ideas in a functional programming language. The method is implemented in a second-year course in computational physics at Lebanon Valley College. We argue that the structure of Newtonian mechanics is clarified by its expression in a language (Haskell) that supports higher-order functions, types, and type classes. In electromagnetic theory, the type signatures of functions that calculate electric and magnetic fields clearly express the functional dependency on the charge and current distributions that produce the fields. Many of the ideas in basic physics are well-captured by a type or a function.
description: In Proceedings TFPIE 2014, arXiv:1412.4738
Projected Reflected Gradient Methods for Monotone Variational Inequalities
Creators: name: Malitsky, Yu.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 47J20, 90C25, 90C30, 90C52

description: This paper is concerned with some new projection methods for solving variational inequality problems with monotone and Lipschitz-continuous mapping in Hilbert space. First, we propose the projected reflected gradient algorithm with a constant stepsize. It is similar to the projected gradient method, namely, the method requires only one projection onto the feasible set and only one value of the mapping per iteration. This distinguishes our method from most other projection-type methods for variational inequalities with monotone mapping. Also we prove that it has R-linear rate of convergence under the strong monotonicity assumption. The usual drawback of algorithms with constant stepsize is the requirement to know the Lipschitz constant of the mapping. To avoid this, we modify our first algorithm so that the algorithm needs at most two projections per iteration. In fact, our computational experience shows that such cases with two projections are very rare. This scheme, at least theoretically, seems to be very effective. All methods are shown to be globally convergent to a solution of the variational inequality. Preliminary results from numerical experiments are quite promising.
Two-phonon wobbling in 135Pr
Creators: name: Sensharma, N.
name: Seweryniak, D.
name: Ghugre, S.S.
name: Palit, R.
name: Kondev, F.G.
name: Sheikh, J.A.
name: Gupta, Y.K.
name: Hartley, D.J.
name: McMaken, T.C.
name: Howard, K.B.
name: Li, W.
name: Chen, Q.B.
name: Garg, U.
name: Bhat, G.H.
name: Cozzi, J.L.
name: Zhu, S.
name: Singh, R.P.
name: Sethi, J.
name: Ayangeakaa, A.D.
name: Frauendorf, S.
name: Carpenter, M.P.
name: Janssens, R.V.F.
Publisher: name: Elsevier B.V.
Year: 2019

description: The second-phonon (nω=2) wobbling band has been established in the nucleus 135Pr. Conclusive evidence for its wobbling nature comes from the ΔI=1, E2 character of the transitions between the new band and the previously identified transverse wobbler band (nω=1) in this nucleus. Theoretical calculations in the framework of the quasiparticle triaxial rotor and triaxial projected shell models are found to be in good agreement with the experimental results.
A non-linear solution to the $S_8$ tension?
Creators: name: Amon, Alexandra
name: Efstathiou, George
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Weak galaxy lensing surveys have consistently reported a lower amplitude for the matter fluctuation spectrum, as measured by the $S_8$ parameter, than expected in the $Λ{\rm CDM}$ cosmology favoured by $Planck$. However, the expansion history follows the predictions of the $Planck$ $Λ{\rm CDM}$ cosmology to high accuracy, as do measurements of lensing of the cosmic microwave background anisotropies. Redshift space distortion measurements also appear to be consistent with $Planck$ $Λ{\rm CDM}$. In this paper, we argue that these observations can be reconciled with the $Planck$ $Λ{\rm CDM}$ cosmology if the matter power spectrum is suppressed more strongly on non-linear scales than assumed in analyses of weak galaxy lensing. We demonstrate this point by fitting a one-parameter model, characterising a suppression of the non-linear power spectrum, to the KiDS-1000 weak lensing measurements. Such a suppression could be attributed to new properties of the dark matter that affect non-linear scales, or to a response of the matter fluctuations to baryonic feedback processes that are stronger than expected from recent cosmological simulations. Our proposed explanation can be tested using measurements of the amplitude of the matter fluctuation spectrum on linear scales, in particular via high precision redshift space distortion measurements from forthcoming galaxy and quasar redshift surveys.
description: 13 pages, 8 figures
title: Methoden queeren Forschens
Creators: name: Binder, Beate
name: Gammerl, Benno
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2023

description: Queere Methoden – der Begriff ist ebenso unklar wie widersprüchlich. Wie kann so etwas wie Methoden, die für Ordnung und Übersichtlichkeit stehen, mit queer in Verbindung gebracht werden, also mit den damit verbundenen flüchtigen, widerspenstigen Praktiken und Subjektpositionen oder gar mit einem Theoriekorpus, der alle normativen Setzungen zu unterlaufen verspricht? Zunächst ließe sich vermuten, dass queeres Forschen sich mit queeren Themen, Lebensweisen und Selbstverständnissen beschäftigt – so wie sich die historische Forschung mit der Vergangenheit auseinandersetzt. Warum sollten dazu andere als die etablierten Methoden des archivalischen, historischen oder ethnographischen Forschens notwendig sein? So einfach liegen die Dinge jedoch nicht. Genauso wenig wie die Geschichtswissenschaft schlicht Vergangenes erzählt, beschreibt queere Forschung lediglich queere Lebensweisen. Schon lange ist queer nicht mehr nur ein Adjektiv, das im Sinne von LSBTIA* ein Feld von Subjektpositionen bezeichnet. Häufig wird queeren auch als Verb gebraucht, das ein aktives Tun meint – zum Beispiel im Umgang mit Methoden und dem Forschen selbst. Es geht also darum, die Art und Weise zu queeren, wie sich Forscher*innen den Feldern ihres Interesses nähern und ihre Themen erkunden.
An updated metal-dependent theoretical scenario for Classical Cepheids
Creators: name: De Somma, Giulia
name: Marconi, Marcella
name: Molinaro, Roberto
name: Ripepi, Vincenzo
name: Leccia, Silvio
name: Musella, Ilaria
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: To properly quantify possible residual systematic errors affecting the Classical Cepheid distance scale, a detailed theoretical scenario is recommended. By extending the set of nonlinear convective pulsation models published for $Z=0.02$ \citep[][]{Desomma2020a} to $Z=0.004$, $Z=0.008$ and $Z=0.03$, we provide a detailed homogeneous nonlinear model grid taking into account simultaneous variations of the mass-luminosity relation, the efficiency of super-adiabatic convection and the chemical composition. The dependence of the inferred Period-Radius, Period-Mass-Radius, and Period-Mass-Luminosity-Temperature relations on the input parameters is discussed for both the Fundamental and First Overtone modes. The trend of the instability strip getting redder as the metallicity increases is confirmed for the additional ML assumptions and mixing length values. From the obtained multi-filter light curves, we derive mean magnitudes and colors and in turn Period-Luminosity-Color and Period-Wesenheit relations for each assumed chemical composition, mass-luminosity relation and efficiency of super-adiabatic convection. Application to a well-studied sample of Cepheids in the Large Magellanic Cloud allows us to constrain the dependence of the inferred distance modulus on the assumed mass-luminosity relation, and the inclusion of the metallicity term in the derivation of Period-Wesenheit relations allows us, for each assumed mass-luminosity relation, to predict the metallicity dependence of the Cepheid distance scale. The obtained metal-dependent Period-Wesenheit relations are compared with recent results in the literature and applied to a sample of Gaia Early Data Release 3 Galactic Cepheids with known metal abundances to derive individual parallaxes. The comparison of these predictions with Gaia results is finally discussed.
description: 78 pages, 35 tables, 25 figures. Accepted for publication on ApJ Supplement
Revealing the escape mechanism of three-dimensional orbits in a tidally limited star cluster
Creators: name: Zotos, Euaggelos E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The aim of this work is to explore the escape process of three-dimensional orbits in a star cluster rotating around its parent galaxy in a circular orbit. The gravitational field of the cluster is represented by a smooth, spherically symmetric Plummer potential, while the tidal approximation was used to model the steady tidal field of the galaxy. We conduct a thorough numerical analysis distinguishing between regular and chaotic orbits as well as between trapped and escaping orbits, considering only unbounded motion for several energy levels. It is of particular interest to locate the escape basins towards the two exit channels and relate them with the corresponding escape times of the orbits. For this purpose, we split our investigation into three cases depending on the initial value of the $z$ coordinate which was used for launching the stars. The most noticeable finding is that the majority of stars initiated very close to the primary $(x,y)$ plane move in chaotic orbits and they remain trapped for vast time intervals, while orbits with relatively high values of $z_0$ on the other hand, form well-defined basins of escape. It was also observed, that for energy levels close to the critical escape energy the escape rates of orbits are large, while for much higher values of energy most of the orbits have low escape periods or they escape immediately to infinity. We hope our outcomes to be useful for a further understanding of the dissolution process and the escape mechanism in open star clusters.
description: Published in MNRAS journal. arXiv admin note: previous paper with related context: arXiv:1404.4285
Interplay of Electronic and Geometric Structure Tunes Organic Biradical Character in Bimetallic Tetrathiafulvalene Tetrathiolate Complexes
Creators: name: Boyn, Jan-Niklas
name: McNamara, Lauren E.
name: Anderson, John S.
name: Mazziotti, David A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The synthesis and design of organic biradicals with tunable singlet-triplet gaps has become the subject of significant research interest, owing to their possible photochemical applications and use in the development of molecular switches and conductors. Recently, tetrathiafulvalene tetrathiolate (TTFtt) has been demonstrated to exhibit such organic biradical character in doubly ionized bimetallic complexes. In this article we use high-level {\em ab initio} calculations to interrogate the electronic structure of a series of TTFtt-bridged metal complexes, resolving the factors governing their biradical character and singlet-triplet gaps. We show that the degree of biradical character correlates with a readily measured experimental predictor, the central TTFtt C-C bond length, and that it may be described by a one-parameter model, providing valuable insight for the future rational design of TTFtt based biradical compounds and materials.
title: Frauengefängnisse als Räume der queeren DDR-Geschichte
Creators: name: Rottmann, Andrea
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2023

description: Da das Recht und damit auch der Strafvollzug dem Aufbau des Sozialismus dienten, ist anzunehmen, dass diese sozialistische Moral auch in den Gefängnissen vermittelt werden sollte. Wie wurde also in den DDR-Haftanstalten mit gleichgeschlechtlicher Sexualität und nicht-normativen Verkörperungen von Geschlecht umgegangen? Dieser Frage geht der Beitrag am Beispiel des Ost-Berliner Frauengefängnisses nach.
Weak percolation on multiplex networks with overlapping edges
Creators: name: Baxter, G. J.
name: da Costa, R. A.
name: Dorogovtsev, S. N.
name: Mendes, J. F. F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We solve the weak percolation problem for multiplex networks with overlapping edges. In weak percolation, a vertex belongs to a connected component if at least one of its neighbors in each of the layers is in this component. This is a weaker condition than for a mutually connected component in interdependent networks, in which any two vertices must be connected by a path within each of the layers. The effect of the overlaps on weak percolation turns out to be opposite to that on the giant mutually connected component. While for the giant mutually connected component, overlaps do not change the critical phenomena, our theory shows that in two layers any (nonzero) concentration of overlaps drives the weak percolation transition to the ordinary percolation universality class. In three layers, the phase diagram of the problem contains two lines -- of a continuous phase transition and of a discontinuous one -- connected in various ways depending on how the layers overlap. In the case of only doubled overlapped edges, two of the end points of these lines coincide, resulting in a tricritical point like that seen in heterogeneous $k$-core percolation.
description: 21 pages, 8 figures
title: Lesbische* Frauen* in einer westdeutschen Psychiatrie in den ersten Nachkriegsjahren
Creators: name: Kunz, Steff
name: Nolte, Karen
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2023

description: Queere Geschichtsschreibung steckt auch 2022 im deutschsprachigen Raum immer noch in den Anfängen. Die Erforschung lesbischer* Geschichte wurde sehr lange hauptsächlich von Aktivist*innen geleistet, die in politischen Projekten oder finanziert durch kleinere Aufträge nach Spuren lesbischen* Lebens suchten und Stimmen von Zeitzeug*innen aufzeichneten. In der universitären Welt ist lesbische* Geschichtsschreibung bisher allenfalls punktuell zu finden. Folgende Ausführungen zur Situation frauenliebender Frauen* in psychiatrischen Kliniken nach 1945 werden mehr Fragen als Forschungsbefunde enthalten, da sich unsere Forschungen noch in den Anfängen befinden.
Bricklayer: An Authentic Introduction to the Functional Programming Language SML
Creators: name: Winter, Victor
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computers and Society (cs.CY)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Functional programming languages are seen by many as instrumental to effectively utilizing the computational power of multi-core platforms. As a result, there is growing interest to introduce functional programming and functional thinking as early as possible within the computer science curriculum. Bricklayer is an API, written in SML, that provides a set of abstractions for creating LEGO artifacts which can be viewed using LEGO Digital Designer. The goal of Bricklayer is to create a problem space (i.e., a set of LEGO artifacts) that is accessible and engaging to programmers (especially novice programmers) while providing an authentic introduction to the functional programming language SML.
description: In Proceedings TFPIE 2014, arXiv:1412.4738
Evidence for Rigid Triaxial Deformation in Ge 76 from a Model-Independent Analysis
Creators: name: Rhodes, D.
name: Li, J.
name: Bucher, B.
name: Cline, D.
name: Wu, J.
name: Walters, W.B.
name: Stolze, S.M.
name: Auranen, K.
name: Kondev, F.G.
name: Hartley, D.J.
name: Lauritsen, T.
name: MacChiavelli, A.O.
name: Carpenter, M.P.
name: Zhu, S.
name: Forney, A.M.
name: Chowdhury, P.
name: Albers, M.
name: Wu, C.Y.
name: Janssens, R.V.F.
name: Henderson, J.
name: Fallon, P.
name: Krishichayan
name: Crawford, H.L.
name: Gade, A.
name: Seweryniak, D.
name: Ayangeakaa, A.D.
name: Hayes, A.B.
name: Little, D.
Publisher: name: American Physical Society
Year: 2019

description: An extensive, model-independent analysis of the nature of triaxial deformation in Ge76, a candidate for neutrinoless double-beta (0νββ) decay, was carried out following multistep Coulomb excitation. Shape parameters deduced on the basis of a rotational-invariant sum-rule analysis provided considerable insight into the underlying collectivity of the ground-state and γ bands. Both sequences were determined to be characterized by the same β and γ deformation parameter values. In addition, compelling evidence for low-spin, rigid triaxial deformation in Ge76 was obtained for the first time from the analysis of the statistical fluctuations of the quadrupole asymmetry deduced from the measured E2 matrix elements. These newly determined shape parameters are important input and constraints for calculations aimed at providing, with suitable accuracy, the nuclear matrix elements relevant to 0νββ.
Elucidating the molecular orbital dependence of the total electronic energy in multireference problems
Creators: name: Boyn, Jan-Niklas
name: Mazziotti, David A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The accurate resolution of the chemical properties of strongly correlated systems, such as biradicals, requires the use of electronic structure theories that account for both multi-reference as well as dynamic correlation effects. A variety of methods exist that aim to resolve the dynamic correlation in multi-reference problems, commonly relying on an exponentially scaling complete-active-space self-consistent-field (CASSCF) calculation to generate reference molecular orbitals (MOs). However, while CASSCF orbitals provide the optimal solution for a selected set of correlated (active) orbitals, their suitability in the quest for the resolution of the total correlation energy has not been thoroughly investigated. Recent research has shown the ability of Kohn-Shan density functional theory (KS-DFT) to provide improved orbitals for coupled cluster (CC) and Møller-Plesset perturbation theory (MP) calculations. Here we extend the search for optimal and more cost effective MOs to post-configuration-interaction (post-CI) methods, surveying the ability of the MOs obtained with various DFT functionals, as well as Hartree-Fock, and CC and MP calculations to accurately capture the total electronic correlation energy. Applying the anti-Hermitian contracted Schrödinger equation (ACSE) to the dissociation of N$_2$, the calculation of biradical singlet-triplet gaps and the transition states of the bicylobutane isomerization, we demonstrate DFT provides a cost-effective alternative to CASSCF in providing reference orbitals for post-CI dynamic correlation calculations.
Quantum control and quantum speed limits in supersymmetric potentials
Creators: name: Campbell, Christopher
name: Li, Jing
name: Busch, Thomas
name: Fogarty, Thomás
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Supersymmetry allows one to build a hierarchy of Hamiltonians that share the same spectral properties and which are pairwise connected through common superpotentials. The iso-spectral properties of these Hamiltonians imply that the dynamics and therefore control of different eigenstates are connected through supersymmetric intertwining relations. In this work we explore how this enables one to study general dynamics, shortcuts to adiabaticity (STA) and quantum speed limits for distinct states of different supersymmetric partner potentials by using the infinite box as an example.
description: 13 pages, 3 figures
null prozessbasiertes Modell zur wirtschaftlich-technischen Abbildung von Abwasserunternehmen
Creators: name: Gießler, Mathias
Publisher: name: Universität Rostock, Agrar- und Umweltwissenschaftliche Fakultät, Professur Wasserwirtschaft
Year: 2019
Subjects: subject: 350 Public administration
subject: 620 Engineering & allied operations
subject: 624 Structural and Environmental Engineering

description: Zur Untersuchung der wirtschaftlich-technischen Auswirkungen des demografischen Wandels auf die Schmutzwasserentsorgung wird in dieser Arbeit ein Modell zur ganzheitlichen und prozessbasierten Abbildung der Infra- und Kostenstruktur von öffentlichen Aufgabenträgern der Abwasserwirtschaft präsentiert. Das Modell wurde genutzt für: 1) Determinierung des maßgebenden Gebührentreibers, 2.) Ermittlung der zukünftigen Kosten- als auch Gebührenentwicklung und 3.) Quantifizierung von dagegenwirkenden Maßnahmen und Ermittlung deren Potentials zur Minderung von ausgeprägten Gebührenanstiegen.
Additional file 22 of Abundant resistome determinants in rhizosphere soil of the wild plant Abutilon fruticosum
Creators: name: Alshehri, Wafa A.
name: Abulfaraj, Aala A.
name: Alqahtani, Mashael D.
name: Alomran, Maryam M.
name: Alotaibi, Nahaa M.
name: Alwutayd, Khairiah
name: Aloufi, Abeer S.
name: Alshehrei, Fatimah M.
name: Alabbosh, Khulood F.
name: Alshareef, Sahar A.
name: Ashy, Ruba A.
name: Refai, Mohammed Y.
name: Jalal, Rewaa S.
Publisher: name: figshare
Year: 2024
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics

description: Additional file 22. Table S22. Information retrieved from CARD site ( https://card.mcmaster.ca/ontology/ ) for the top highly abundant ARGs (> 15 gene queries) in samples of rhizosphere and bulk soil microbiomes of Abutilon fruticosum.
Characterization of Sobolev and BV Spaces
Creators: name: Spector, Daniel
Publisher: name: Figshare
Year: 2018
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: This work presents some new characterizations of Sobolev spaces and the space of functions of Bounded Variation. Additionally it gives new proofs of continuity and lower semicontinuity theorems due to Reshetnyak.
Simple Balanced Binary Search Trees
Creators: name: Ragde, Prabhakar
Publisher: name: arXiv
Year: 2014
Subjects: subject: Programming Languages (cs.PL)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Efficient implementations of sets and maps (dictionaries) are important in computer science, and balanced binary search trees are the basis of the best practical implementations. Pedagogically, however, they are often quite complicated, especially with respect to deletion. I present complete code (with justification and analysis not previously available in the literature) for a purely-functional implementation based on AA trees, which is the simplest treatment of the subject of which I am aware.
description: In Proceedings TFPIE 2014, arXiv:1412.4738