cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Increasing Rotation Period of Comet 10P/Tempel 2
Creators: name: Knight, Matthew M.
name: Farnham, Tony L.
name: Schleicher, David G.
name: Schwieterman, Edward W.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We imaged comet 10P/Tempel 2 on 32 nights from 1999 April through 2000 March. R-band lightcurves were obtained on 11 of these nights from 1999 April through 1999 June, prior to both the onset of significant coma activity and perihelion. Phasing of the data yields a double-peaked lightcurve and indicates a nucleus rotational period of 8.941 +/- 0.002 hr with a peak-to-peak amplitude of ~0.75 mag. Our data are sufficient to rule out all other possible double-peaked solutions as well as the single- and triple- peaked solutions. This rotation period agrees with one of five possible solutions found in post-perihelion data from 1994 by Mueller and Ferrin (1996, Icarus, 123, 463-477), and unambiguously eliminates their remaining four solutions. We applied our same techniques to published lightcurves from 1988 which were obtained at an equivalent orbital position and viewing geometry as in 1999. We found a rotation period of 8.932 +/- 0.001 hr in 1988, consistent with the findings of previous authors and incompatible with our 1999 solution. This reveals that Tempel 2 spun-down by ~32 s between 1988 and 1999 (two intervening perihelion passages). If the spin-down is due to a systematic torque, then the rotation period prior to perihelion during the 2010 apparition is expected to be an additional 32 s longer than in 1999.
description: Accepted by The Astronomical Journal; 22 pages of text, 3 tables, 6 figures
Macroderes fornicatus Sharp 1880
Creators: name: Abdalla, Ishtiag H.
name: Deschodt, Christian M.
name: Scholtz, Clarke H.
name: Sole, Catherine L.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Macroderes
Macroderes fornicatus

description: Macroderes fornicatus Sharp, 1880
(Figs. 7, 54, 65, 67)
Macroderes fornicatus Sharp, 1880: 37; Péringuey 1901: 303; Janssens 1939: 28; Ferreira 1969: 320; Frolov & Scholtz 2005: 381.
Type locality. Cape Peninsula.
Type material examined. None. Type series is deposited in MNHN (Frolov & Scholtz 2005).
Additional material examined. 1 ♂ (UPSA): “ S. Africa / SW / Cape / Cape of Good Hope / NR / 34 1734° S 18 2546° E / 13 Oct. 1987 / A L V Davis”; 1 ♂: “ S. Africa / SW / Cape / Good Hope / Nat. Res / 34 18' S 18 27' E / 15.VII.1987 / ALV Davis // ex cattle dung baited pitfall / in 2–3ry fynbos // Macroderes fornicatus Sharp / Frolov det / 2003”; 1 ♂ with same data but date of collection: 3. VII. 1987. 2 ♀♀ (SANC): “UNIONDALE / E / CP / (10 Kms NE) / 4.V.76 / 970 m / Davis & Aschenborn // Ex Coll. CSIRO / Div / Entomology / S. AFRICAN STATION // Macorderes sp / det. CSIRO / DBRU”; 1 ♀ (UPSA): “ RSA. Western Cape Province / Cape Peninsula / Cape Town / 34°13'19.21"S 18°24'38.49"E / 100 m / 17. vii. 2016 / baited pitfall trap: pig dung / leg. C. Deschodt, W. P. Strümpher ”; 1 ♂ (SAMC): “ Tafelberg / 18. 4. 48 // Macroderes fornicatus Sharp // SAM-Col-A 062970 ”.
Size range. Males length: 8.2–11.2 mm, width: 5.4–7.3 mm; females length: 9.7–11.9 mm, width: 6.9–7.0 mm.
Differential diagnosis. Close to M. mutilans and M. bias in having flattened and matte elytral intervals (Fig. 67), but can easily be distinguished by having a different shape of the internal sac sclerite and also by stria 9 widely separated from stria 10 (Fig. 54).
Habitat and distribution. This species is known only from the Cape Peninsula (Fig. 2). The area forms part of the southwest Fynbos Bioregion located within the Peninsula Sandstone Fynbos vegetation unit (Mucina & Rutherford 2006). The unit extends from the top of Lions’ Head and Table Mountain to Cape Point and Cape of Good Hope. The vegetation cover encompasses a mixture of proteoid and ericoid-leaved shrubland with mainly proteoid, ericaceous and restioid fynbos and some asteraceous fynbos. The mean annual precipitation ranges between 520 and 1690 mm (mean 780 mm) with a maximum peak from May to August.
description: Published as part of Abdalla, Ishtiag H., Deschodt, Christian M., Scholtz, Clarke H. & Sole, Catherine L., 2018, An update to the taxonomy of the genus Macroderes Westwood 1842 (Coleoptera: Scarabaeidae: Scarabaeinae) with descriptions of new species from South Africa, pp. 41-75 in Zootaxa 4504 (1) on pages 52-53, DOI: 10.11646/zootaxa.4504.1.3, http://zenodo.org/record/2606164
Effect of morphology on the photoelectrochemical performance of nanostructured Cu2 O photocathodes
Creators: name: Kumar, Pawan
Publisher: name: figshare
Year: 2021
Subjects: subject: 30101 Analytical Spectrometry
subject: FOS: Chemical sciences
subject: 30601 Catalysis and Mechanisms of Reactions
subject: 30301 Chemical Characterisation of Materials
subject: 39999 Chemical Sciences not elsewhere classified
subject: 30603 Colloid and Surface Chemistry
subject: 30102 Electroanalytical Chemistry
subject: 30604 Electrochemistry
subject: Environmental Chemistry
subject: 39901 Environmental Chemistry (incl. Atmospheric Chemistry)
subject: Inorganic Chemistry
subject: 30205 Non-metal Chemistry

description: Cu2O is a promising earth-abundant semiconductor photocathode for sunlight-driven water splitting. Characterization results are presented to show how the photocurrent density (Jph), onset potential (Eonset), band edges, carrier density (NA), and interfacial charge transfer resistance (Rct) are affected by the morphology and method used to deposit Cu2O on a copper foil. Mesoscopic and planar morphologies exhibit large differences in the values of NA and Rct. However, these differences are not observed to translate to other photocatalytic properties of Cu2O.
Innovative Cognitive Approaches for Joint Radar Clutter Classification and Multiple Target Detection in Heterogeneous Environments
Creators: name: Yan, Linjie
name: Han, Sudan
name: Hao, Chengpeng
name: Orlando, Danilo
name: Ricci, Giuseppe
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The joint adaptive detection of multiple point-like targets in scenarios characterized by different clutter types is still an open problem in the radar community. In this paper, we provide a solution to this problem by devising detection architectures capable of classifying the range bins according to their clutter properties and detecting possible multiple targets whose positions and number are unknown. Remarkably, the information provided by the proposed architectures makes the system aware of the surrounding environment and can be exploited to enhance the entire detection and estimation performance of the system. At the design stage, we assume three different signal models and apply the latent variable model in conjunction with estimation procedures based upon the expectation-maximization algorithm. In addition, for some models, the maximization step cannot be computed in closed-form (at least to the best of authors' knowledge) and, hence, suitable approximations are pursued, whereas, in other cases, the maximization is exact. The performance of the proposed architectures is assessed over synthetic data and shows that they can be effective in heterogeneous scenarios providing an initial snapshot of the radar operating scenario.
Origin of subgap states in normal-insulator-superconductor van der Waals heterostructures
Creators: name: Karnatak, Paritosh
name: Mingazheva, Zarina
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Berger, Helmuth
name: Forró, László
name: Schönenberger, Christian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Superconductivity in van der Waals materials, such as NbSe$_{2}$ and TaS$_{2}$, is fundamentally novel due to the effects of dimensionality, crystal symmetries, and strong spin-orbit coupling. In this work we perform tunnel spectroscopy on NbSe$_{2}$ by utilizing MoS$_{2}$ or hexagonal Boron Nitride (hBN) as a tunnel barrier. We observe subgap excitations and probe their origin by studying various heterostructure designs. We show that the edge of NbSe$_{2}$ hosts many defect states, which strongly couple to the superconductor and form Andreev bound states. Furthermore, by isolating the NbSe$_{2}$ edge we show that the subgap states are ubiquitous in MoS$_{2}$ tunnel barriers, but absent in hBN tunnel barriers, suggesting defects in MoS$_{2}$ as their origin. Their magnetic nature reveals a singlet or a doublet type ground state and based on nearly vanishing g-factors or avoided-crossing of subgap excitations we highlight the role of strong spin-orbit coupling.
description: 16 pages, 7 figures. Includes Supporting Information
Strongly Scale-dependent Non-Gaussianity
Creators: name: Riotto, Antonio
name: Sloth, Martin S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss models of primordial density perturbations where the non-Gaussianity is strongly scale-dependent. In particular, the non-Gaussianity may have a sharp cut-off and be very suppressed on large cosmological scales, but sizeable on small scales. This may have an impact on probes of non-Gaussianity in the large-scale structure and in the cosmic microwave background radiation anisotropies.
description: 4 pages
Acyclic chelating ligands for radiometals
Creators: name: Ramogida, Caterina Fortunata
Publisher: name: University of British Columbia
Year: 2015

description: This thesis presents studies on a class of acyclic (open chain) chelating ligands based on the picolinic acid moiety. Our recent reports of the promising hexadentate chelator H₂dedpa and octadentate analogue H₄octapa for Ga(III) and In(III)/Lu(III) complexation, respectively, have spurred our interest in further developing this class of chelators, which have subsequently been dubbed the “pa” family of ligands. These ligands possess the potential to bind a variety of clinically relevant radiometal ions, such as ⁶⁸Ga, ⁶⁴Cu, ¹¹¹In, ¹⁷⁷Lu, or ⁸⁶/⁹⁰Y. When harnessed properly, the radiative emissions of these radiometals can be utilised in radiopharmaceuticals for imaging (via γ-rays for single photon emission computed tomography (SPECT) or β+ particles for positron emission tomography (PET)) or therapy (via highly ionizing radiation from α, β-, or Auger electron emission). A key component of these radiometal-based radiopharmaceuticals is the chelating ligand, used to securely bind the radiometal which ensures proper delivery the radioactive dose to the area of interest in vivo. This work focuses on further exploiting the H₂dedpa (N₄O₂) and H₄octapa (N₄O₄) scaffolds that possess ideal properties for ⁶⁷/⁶⁸Ga and ¹¹¹In radiopharmaceuticals, respectively – such as mild room temperature radiolabeling in 10 min, and the ability to form kinetically inert complexes – rare manifestations for acyclic ligands. Herein, efforts were made to incorporate dedpa²- into a small molecule imaging agent for ⁶⁸Ga PET. A variety of dedpa²- (and one octapa⁴-) analogues were synthesized, characterized, and evaluated through thermodynamic stability, in vitro kinetic inertness, and radiolabeling studies to assess their “usefulness” as ligands in radiopharmaceutical design. The chiral ligands H₂CHXdedpa and H₄CHXoctapa are highlights of this work; [Ga(CHXdedpa)]+ and [In(CHXoctapa)]- were found to be more, or equally, stable versus their achiral counterparts H₂dedpa and H₄octapa. Nitroimidazole-containing H₂dedpa and H₂CHXdedpa derivatives were also studied as potential ⁶⁸Ga PET imaging agents of tumour hypoxia. The radio-tracers showed exceptional in vitro stability (86 to >99% intact), and promising preferential uptake in hypoxic cell lines suggesting these ligands would be ideal candidates for further testing in vivo.
Investigation of Mental Mapping in Urban Design: Case of Queensbay, Penang
Creators: name: Norliza Mohd Yasin
Publisher: name: TUENGR Group
Year: 2017
Subjects: Urban Design Element
Modern Urban Design
Sustainable Architecture
Kevin Lynch.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 8, 4, 261-273
Controlling transfer of quantum correlations among bi-partitions of a composite quantum system by combining noisy environments
Creators: name: Zhang, Xiu-xing
name: Li, Fu-li
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The correlation dynamics is investigated for various bi-partitions of a composite system consisting of two qubits, and two independent and non-identical noisy environments. The two qubits have no direct interaction with each other and locally interact with their environments. Classical and quantum correlations including entanglement are initially prepared only between the two qubits. We find that, contrary to the identical noisy environment case, the entanglement and quantum correlation transfer directions can be controlled by combining different noisy environments. The amplitude damping environment determines whether there exists entanglement transfer among the bi-partitions of a composite system. When one qubit is coupled to an amplitude damping environment but another one to a bit-flip one, we find a very interesting result that all the quantum and classical correlations, and even the entanglement, originally existing between the qubits, can be completely transferred without any loss to the qubit coupled to the bit-flip environment and the amplitude-damping environment. We also notice that it is possible to distinguish the quantum correlation from the classical correlation and entanglement by combining different noisy environments.
description: 22 pages, 9 figures
Crystal nucleation of hard spheres using molecular dynamics, umbrella sampling and forward flux sampling: A comparison of simulation techniques
Creators: name: Filion, Laura
name: Hermes, Michiel
name: Ni, Ran
name: Dijkstra, Marjolein
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Over the last number of years several simulation methods have been introduced to study rare events such as nucleation. In this paper we examine the crystal nucleation rate of hard spheres using three such numerical techniques: molecular dynamics, forward flux sampling and a Bennett-Chandler type theory where the nucleation barrier is determined using umbrella sampling simulations. The resulting nucleation rates are compared with the experimental rates of Harland and Van Megen [J. L. Harland and W. van Megen, Phys. Rev. E 55, 3054 (1997)], Sinn et al. [C. Sinn et al., Prog. Colloid Polym. Sci. 118, 266 (2001)] and Schatzel and Ackerson [K. Schatzel and B.J. Ackerson, Phys. Rev. E, 48, 3766 (1993)] and the predicted rates for monodisperse and 5% polydisperse hard spheres of Auer and Frenkel [S. Auer and D. Frenkel, Nature 409, 1020 (2001)]. When the rates are examined in long-time diffusion units, we find agreement between all the theoretically predicted nucleation rates, however, the experimental results display a markedly different behaviour for low supersaturation. Additionally, we examined the pre-critical nuclei arising in the molecular dynamics, forward flux sampling, and umbrella sampling simulations. The structure of the nuclei appear independent of the simulation method, and in all cases, the nuclei contain on average significantly more face-centered-cubic ordered particles than hexagonal-close-packed ordered particles.
description: Submitted to the Journal of Chemical Physics
Seven Useful Questions in Density Functional Theory
Creators: name: Crisostomo, Steven
name: Pederson, Ryan
name: Kozlowski, John
name: Kalita, Bhupalee
name: Cancio, Antonio C.
name: Datchev, Kiril
name: Wasserman, Adam
name: Song, Suhwan
name: Burke, Kieron
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore a variety of unsolved problems in density functional theory, where mathematicians might prove useful. We give the background and context of the different problems, and why progress toward resolving them would help those doing computations using density functional theory. Subjects covered include the magnitude of the kinetic energy in Hartree-Fock calculations, the shape of adiabatic connection curves, using the constrained search with input densities, densities of states, the semiclassical expansion of energies, the tightness of Lieb-Oxford bounds, and how we decide the accuracy of an approximate density.
description: 21 pages, 6 figures
General Relativistic Description of the Observed Galaxy Power Spectrum: Do We Understand What We Measure?
Creators: name: Yoo, Jaiyul
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We extend the general relativistic description of galaxy clustering developed in Yoo, Fitzpatrick, and Zaldarriaga (2009). For the first time we provide a fully general relativistic description of the observed matter power spectrum and the observed galaxy power spectrum with the linear bias ansatz. It is significantly different from the standard Newtonian description on large scales and especially its measurements on large scales can be misinterpreted as the detection of the primordial non-Gaussianity even in the absence thereof. The key difference in the observed galaxy power spectrum arises from the real-space matter fluctuation defined as the matter fluctuation at the hypersurface of the observed redshift. As opposed to the standard description, the shape of the observed galaxy power spectrum evolves in redshift, providing additional cosmological information. While the systematic errors in the standard Newtonian description are negligible in the current galaxy surveys at low redshift, correct general relativistic description is essential for understanding the galaxy power spectrum measurements on large scales in future surveys with redshift depth z>3. We discuss ways to improve the detection significance in the current galaxy surveys and comment on applications of our general relativistic formalism in future surveys.
description: accepted for publication in Physical Review D
Lamb dilatation and its hydrodynamic viscous flux in near-wall incompressible flows
Creators: name: Chen, Tao
name: Liu, Tianshu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this paper, we introduce a new physical concept referred to as the wall-normal Lamb dilatation flux (WNLDF), which is defined as the wall-normal derivative of the Lamb dilatation (namely, the divergence of the Lamb vector) multiplied by the dynamic viscosity for incompressible viscous flows. It is proved that the boundary Lamb dilatation flux (BLDF, namely the wall-normal Lamb dilatation flux at the wall) is determined by the boundary enstrophy flux (BEF) and the surface curvature-induced contribution. As the first step to explore this new concept, the present study only considers flow past a stationary no-slip flat wall without curvature-fluid dynamic coupling effects. It is found that the temporal-spatial evolution rate of the WNLDF is contributed by four source terms, which can be explicitly expressed using the fundamental surface quantities including skin friction (or surface vorticity) and surface pressure. Therefore, the instantaneous near-wall flow structures are directly related to the WNLDF in both laminar and turbulent flows. As an example, for the turbulent channel flow at $Re_τ=180$, the intensification of the temporal-spatial evolution rate of the WNLDF is caused by the strong wall-normal velocity event (SWNVE) associated with quasi-streamwise vortices and high intermittency of the viscous sublayer. In addition, near the SWNVE, this evolution rate is mainly contributed by the coupling between skin friction and the boundary enstrophy gradient, as well as the coupling between the skin friction divergence and the boundary enstrophy. The exact results presented in this paper could provide new physical insights into complex near-wall flows.
Remembering terror, remobilizing whiteness : Norwegian discourses of nationhood after July 22
Creators: name: Hakvåg, Hedda
Publisher: name: University of British Columbia
Year: 2015

description: On July 22, 2011, a right-wing terrorist killed 77 people in a double terrorist attack in Norway. Presenting a critical discourse analysis of the annual memorial speeches and coverage from 2012 to 2014, this thesis examines how visions of national identity are produced in and through the remembrance of the terrorist attacks. Situated within the framework of feminist intersectionality, the analysis pays particular attention to discourses of racialized, gendered, and religious belonging. While the terrorist’s identity as a white, Christian, Norwegian man seemingly provided a counterpoint to the dominant Western narrative in which terrorism is associated with racialized, Muslim men, the July 22 remembrance largely fails to explore the intersections between the terrorist’s ideology and more common forms of racism, Islamophobia, and gender essentialism. Instead, the attack is decontextualized, and the subtle use of racialized and ethno-nationalist rhetoric reframes terror as a threat posed by dangerous Muslim outsiders to an innocent, white national community. By emphasizing collectivity and assuming a consensus on values, politicians and media erase differences within the nation and construct sameness, ethnic kinship, and Lutheranism as the criteria for inclusion in the imagined community. These gendered, racialized, and religious ideas of citizenship in turn inform public responses to a heightened sense of vulnerability, legitimizing a securitization of state and increased policing of racialized groups despite the rhetorical calls for more openness and more democracy. In investigating the July 22 memorial claims about Norwegianness against the lived diversity of present-day Norway and its histories of violence, this thesis asks us to consider the human costs of positioning sameness as the criterion for belonging. It presents a case study of the complexity of whiteness and its intersections with gender and religion in a smaller European country, thereby adding to an underexplored area of critical whiteness studies.
Spin relaxation in Rashba rings
Creators: name: Slipko, V. A.
name: Pershin, Y. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spin relaxation dynamics in rings with Rashba spin-orbit coupling is investigated using spin kinetic equation. We find that the spin relaxation in rings occurs toward a persistent spin configuration whose final shape depends on the initial spin polarization profile. As an example, it is shown that a homogeneous parallel to the ring axis spin polarization transforms into a persistent crown-like spin structure. It is demonstrated that the ring geometry introduces a geometrical contribution to the spin relaxation rate speeding up the transient dynamics. Moreover, we identify several persistent spin configurations as well as calculate the Green function of spin kinetic equation.
Two-dimensional Mott-Hubbard electrons in an artificial honeycomb lattice
Creators: name: Singha, A.
name: Gibertini, M.
name: Karmakar, B.
name: Yuan, S.
name: Polini, M.
name: Vignale, G.
name: Katsnelson, M. I.
name: Pinczuk, A.
name: Pfeiffer, L. N.
name: West, K. W.
name: Pellegrini, V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electrons in artificial lattices enable explorations of the impact of repulsive Coulomb interactions in a tunable system. We have trapped two-dimensional electrons belonging to a gallium arsenide quantum well in a nanofabricated lattice with honeycomb geometry. We probe the excitation spectrum in a magnetic field identifying novel collective modes that emerge from the Coulomb interaction in the artificial lattice as predicted by the Mott-Hubbard model. These observations allow us to determine the Hubbard gap and suggest the existence of a novel Coulomb-driven ground state. This approach offers new venues for the study of quantum phenomena in a controllable solid-state system.
description: 10 pages, 10 figures
Scalable and Programmable Phononic Network with Trapped Ions
Creators: name: Chen, Wentao
name: Lu, Yao
name: Zhang, Shuaining
name: Zhang, Kuan
name: Huang, Guanhao
name: Qiao, Mu
name: Su, Xiaolu
name: Zhang, Jialiang
name: Zhang, Jingning
name: Banchi, Leonardo
name: Kim, M. S.
name: Kim, Kihwan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Controllable bosonic systems can provide post-classical computational power with sub-universal quantum computational capability. A network that consists of a number of bosons evolving through beam-splitters and phase-shifters between different modes, has been proposed and applied to demonstrate quantum advantages. While the network has been implemented mostly in optical systems with photons, recently alternative realizations have been explored, where major limitations in photonic systems such as photon loss, and probabilistic manipulation can be addressed. Phonons, the quantized excitations of vibrational modes, of trapped ions can be a promising candidate to realize the bosonic network. Here, we experimentally demonstrate a minimal-loss phononic network that can be programmed and in which any phononic states are deterministically prepared and detected. We realize the network with up to four collective-vibrational modes, which can be straightforwardly extended to reveal quantum advantage. We benchmark the performance of the network with an exemplary algorithm of tomography for arbitrary multi-mode states with a fixed total phonon number. We obtain reconstruction fidelities of 94.5 $\pm$ 1.95 % and 93.4 $\pm$ 3.15 % for single-phonon and two-phonon states, respectively. Our experiment demonstrates a clear and novel pathway to scale up a phononic network for various quantum information processing beyond the limitations of classical and other quantum systems.
Conflict-Free Coloring Made Stronger
Creators: name: Horev, Elad
name: Krakovski, Roi
name: Smorodinsky, Shakhar
Publisher: name: arXiv
Year: 2010
Subjects: subject: Combinatorics (math.CO)
subject: Computational Geometry (cs.CG)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: In FOCS 2002, Even et al. showed that any set of $n$ discs in the plane can be Conflict-Free colored with a total of at most $O(\log n)$ colors. That is, it can be colored with $O(\log n)$ colors such that for any (covered) point $p$ there is some disc whose color is distinct from all other colors of discs containing $p$. They also showed that this bound is asymptotically tight. In this paper we prove the following stronger results: \begin{enumerate} \item [(i)] Any set of $n$ discs in the plane can be colored with a total of at most $O(k \log n)$ colors such that (a) for any point $p$ that is covered by at least $k$ discs, there are at least $k$ distinct discs each of which is colored by a color distinct from all other discs containing $p$ and (b) for any point $p$ covered by at most $k$ discs, all discs covering $p$ are colored distinctively. We call such a coloring a {\em $k$-Strong Conflict-Free} coloring. We extend this result to pseudo-discs and arbitrary regions with linear union-complexity. \item [(ii)] More generally, for families of $n$ simple closed Jordan regions with union-complexity bounded by $O(n^{1+α})$, we prove that there exists a $k$-Strong Conflict-Free coloring with at most $O(k n^α)$ colors. \item [(iii)] We prove that any set of $n$ axis-parallel rectangles can be $k$-Strong Conflict-Free colored with at most $O(k \log^2 n)$ colors. \item [(iv)] We provide a general framework for $k$-Strong Conflict-Free coloring arbitrary hypergraphs. This framework relates the notion of $k$-Strong Conflict-Free coloring and the recently studied notion of $k$-colorful coloring. \end{enumerate} All of our proofs are constructive. That is, there exist polynomial time algorithms for computing such colorings.
Cluster X-ray luminosity-temperature relation at z>~1.5
Creators: name: Andreon, S.
name: Trinchieri, G.
name: Pizzolato, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The evolution of the properties of the hot gas that fills the potential well of galaxy clusters is poorly known, since models are unable to give robust predictions and observations lack a sufficient redshift leverage and are affected by selection effects. Here, with just two high redshift, z approx 1.8, clusters avoiding selection biases, we obtain a significant extension of the redshift range and we begin to constrain the possible evolution of the X-ray luminosity vs temperature relation. The two clusters, JKC041 at z=2.2 and ISCSJ1438+3414 at z=1.41, are respectively the most distant cluster overall, and the second most distant that can be used for studying scaling relations. Their location in the X-ray luminosity vs temperature plane, with an X-ray luminosity 5 times lower than expected, suggests at the 95 % confidence that the evolution of the intracluster medium has not been self-similar in the last three quarters of the Universe age. Our conclusion is reinforced by data on a third, X-ray selected, high redshift cluster, too faint for its temperature when compared to a sample of similarly selected objects. Our data suggest that non-gravitational effects, such as the baryon physics, influence the evolution of galaxy cluster. Precise knowledge of evolution is central for using galaxy clusters as cosmological probes in planned X-ray surveys such as WFXT or JDEM.
description: MNRAS, in press. Fig 1 degraded to fit arxiv size constraints
Lithium in coalesced non-compact stars
Creators: name: Kamiński, Tomek
name: Schmidt, Mirek
name: Hajduk, Marcin
name: Kiljan, Aleksandra
name: Izviekova, Inna
name: Frankowski, Adam
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. Galactic red novae are thought to be produced in stellar mergers between non-compact stars, such as main-sequence stars and cool giants. They are hoped to help in explaining physical processes involved in common envelope evolution and stellar binary collisions. Aims. We investigate the presence of lithium in three best-observed Galactic red nova remnants. Explaining the origin of lithium may point to mixing mechanism present before, during, or after the merger. Methods. The lithium line at 6707.81 A was compared to a feature of [Ca I at 6572.78 A to derive relative abundances in circumstellar gas. Absolute abundances were next calculated assuming the Solar calcium to lithium abundance ratio. Results. Lithium abundances were measured in the merger remnants of V838 Mon with A(Li)=2.3, CK Vul with A(Li)=2.5, and V1309 Sco with A(Li)=1.8. Conclusions. Lithium is overabundant in red novae, suggesting that at least some merger products activate the Cameron-Fowler mechanism whereby convective mixing can reach the deep stellar interior. Whether deep convection and associated diffusion alone or some other processes (e.g. spin down) can be responsible for driving the Cameron-Fowler mechanism in the remnants requires further studies. Early observations of lithium in V838 Mon hint that these mechanisms can activate early, perhaps already in the common envelope phase. These observations should be taken into account in modelling these complex systems.
description: submitted to A&A; comments welcome
Learning port-Hamiltonian systems -- algorithms
Creators: name: Salnikov, Vladimir
name: Falaize, Antoine
name: Loziienko, Daria
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: In this article we study the possibilities of recovering the structure of port-Hamiltonian systems starting from ``unlabelled'' ordinary differential equations describing mechanical systems. The algorithm we suggest solves the problem in two phases. It starts by constructing the connectivity structure of the system using machine learning methods -- producing thus a graph of interconnected subsystems. Then this graph is enhanced by recovering the Hamiltonian structure of each subsystem as well as the corresponding ports. This second phase relies heavily on results from symplectic and Poisson geometry that we briefly sketch. And the precise solutions can be constructed using methods of computer algebra and symbolic computations. The algorithm permits to extend the port-Hamiltonian formalism to generic ordinary differential equations, hence introducing eventually a new concept of normal forms of ODEs.
description: to appear in Computational Mathematics and Mathematical Physics, 1, 2023
Ultra-Compact Dwarfs in the Core of the Coma Cluster
Creators: name: Madrid, Juan P.
name: Graham, Alister W.
name: Harris, William E.
name: Goudfrooij, Paul
name: Forbes, Duncan A.
name: Carter, David
name: Blakeslee, John P.
name: Spitler, Lee R.
name: Ferguson, Henry C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have discovered both a red and a blue subpopulation of Ultra-Compact Dwarf (UCD) galaxy candidates in the Coma galaxy cluster. We analyzed deep F475W (Sloan g) and F814W (I) Hubble Space Telescope images obtained with the Advanced Camera for Surveys Wide Field Channel as part of the Coma Cluster Treasury Survey and have fitted the light profiles of ~5000 point-like sources in the vicinity of NGC 4874, one of the two central dominant galaxies of the Coma cluster. Although almost all of these sources are globular clusters that remain unresolved, we found that 52 objects have effective radii between ~10 and 66 pc, in the range spanned by Dwarf Globular Transition Objects (DGTO) and UCDs. Of these 52 compact objects, 25 are brighter than M_V ~-11 mag, a magnitude conventionally thought to separate UCDs and globular clusters. The UCD/DGTO candidates have the same color and luminosity distribution as the most luminous globular clusters within the red and blue subpopulations of the immensely rich NGC 4874 globular cluster system. Unlike standard globular clusters, blue and red UCD/DGTO subpopulations have the same median effective radius. The spatial distribution of UCD/DGTO candidates reveal that they congregate towards NGC 4874, and are not uniformly distributed. We find a relative deficit of UCD/DGTOs compared with globular clusters in the inner 15 kpc around NGC 4874, however at larger radii UCD/DGTO and globular clusters follow the same spatial distribution.
description: ApJ in press, vol 722, October 2010, 10 pages, 10 bitmapped figures
Additional file 1: of Estimated intraoperative blood loss correlates with postoperative cardiopulmonary complications and length of stay in patients undergoing video-assisted thoracoscopic lung cancer lobectomy: a retrospective cohort study
Creators: name: Li, Shuangjiang
name: Zhou, Kun
name: Lai, Yutian
name: Shen, Cheng
name: Wu, Yanming
name: Che, Guowei
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Marine Biology
subject: Science Policy

description: STROBE Statement Checklist. (DOCX 30 kb)
Energy relaxation in graphene and its measurement with supercurrent
Creators: name: Voutilainen, Juha
name: Fay, Aurelien
name: Häkkinen, Pasi
name: Viljas, Janne K.
name: Heikkilä, Tero T.
name: Hakonen, Pertti J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study inelastic energy relaxation in graphene for low energies to find out how electrons scatter with acoustic phonons and other electrons. By coupling the graphene to superconductors, we create a strong dependence of the measured signal, i.e.,\ critical Josephson current, on the electron population on different energy states. Since the relative population of high- and low-energy states is determined by the inelastic scattering processes, the critical current becomes an effective probe for their strength. We argue that the electron-electron interaction is the dominant relaxation method and, in our model of two-dimensional electron-electron scattering, we find a scattering time $τ_{e-e}=5... 13$ ps at T=500 mK, 1-2 orders of magnitude smaller than predicted by theory.
description: 10 pages, 13 figures submitted to Physical Review B
Macroderes foveatus Frolov & Scholtz 2005
Creators: name: Abdalla, Ishtiag H.
name: Deschodt, Christian M.
name: Scholtz, Clarke H.
name: Sole, Catherine L.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Macroderes
Macroderes foveatus

description: Macroderes foveatus Frolov & Scholtz, 2005
(Figs. 8, 31, 40, 46, 49, 51, 73)
Macroderes foveatus Frolov & Scholtz, 2005: 390. Type locality. S. Afr., SW Cape, 3 Km E of Veldrif, 32°46'S 18°14'E.
Type material examined. Holotype, ♂ (TMSA): “ S. Afr / SW Cape / Veldrif / 3Km E / 32° 46' S – 18° 14' E [printed] // 31.8.1981 / E–Y: 1870 / ground traps / 59 days / Endrödy—Younga leg [printed] // groundtrap with meat bait [printed] // HOLOTYPUS / Macroderes foveatus / Frolov & Scholtz / 2003 [red label, printed]”. Paratypes: 1 ♀ (TMSA) same data as holotype; 1 ♀ (TMSA): “ S. Afr / S.W. Cape / Brakfontein farm / 32° 56' S 18° 15' E [printed] // 23.8.1983 / E–Y: 1967 / groundtraps / 72 days / Endroeydi, Penrith leg [printed] // groundtrap with faeces bait [printed] // PARATYPUS / Macroderes foveatus / Frolov & Scholtz / 2003”.
Additional material examined. 2 ♂♂ (UPSA): “ RSA / Western Cape Province / Veldrif / 7 Km E / 19. vii. 2016 / 32° 47' 38.18'' S 18° 14' 53.42'' E // baited pitfall trap: pig dung / C. Deschodt & W.P. Strümpher ”; 1 ♀ (UPSA): “ South Africa / Kommandokraal farm / S 31.50317° E 018.20939° / 14.8. 2015 / C. Deschodt & W. P. Strümpher ”.
Size range. Males length: 10.2–10.4 mm, width: 6.2–7.4 mm; females length: 8.8–10.1 mm, width: 5.3–7.1 mm
Differential diagnosis. This species differs from all Macroderes species except M. cornutus in that the base of the pronotum bears very deep triangular concavity (Figs. 8, 40) however, it can be separated by the combination of the following characteristics: lack of the rounded tubercle in the frontal suture that characterises M. cornutus (Figs. 49, 51), the internal sac sclerite bears small lateral processes (Fig. 31), less elongated punctures at each side of the pronotum (Fig. 46).
Habitat and distribution. This species is recorded from two localities in the southern western part of Western Cape Province along the west coast of South Africa (Fig. 2). Generally, the area is characterised by Mediterranean climate with warm, dry summers and moderate humid, rainy winters (Mucina & Rutherford 2006).
description: Published as part of Abdalla, Ishtiag H., Deschodt, Christian M., Scholtz, Clarke H. & Sole, Catherine L., 2018, An update to the taxonomy of the genus Macroderes Westwood 1842 (Coleoptera: Scarabaeidae: Scarabaeinae) with descriptions of new species from South Africa, pp. 41-75 in Zootaxa 4504 (1) on pages 53-55, DOI: 10.11646/zootaxa.4504.1.3, http://zenodo.org/record/2606164
Exact solutions of Brans-Dicke wormholes in the presence of matter
Creators: name: Garcia, Nadiezhda Montelongo
name: Lobo, Francisco S. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A fundamental ingredient in wormhole physics is the presence of exotic matter, which involves the violation of the null energy condition. Although a plethora of wormhole solutions have been explored in the literature, it is useful to find geometries that minimize the usage of exotic matter. In this work, we find exact wormhole solutions in Brans-Dicke theory where the normal matter threading the wormhole satisfies the null energy condition throughout the geometry. Thus, the latter implies that it is the effective stress-energy tensor containing the scalar field, that plays the role of exotic matter, that is responsible for sustaining the wormhole geometry. More specifically, we consider a zero redshift function and a particular choice for the scalar field and determine the remaining quantities, namely, the stress-energy tensor components and the shape function. The solution found is not asymptotically flat, so that this interior wormhole spacetime needs to be matched to an exterior vacuum solution.
description: 7 pages, 3 figures
Determining the volume fraction in 2-phase composites and bodies using time varying applied fields
Creators: name: Mattei, Ornella
name: Milton, Graeme W.
name: Putinar, Mihai
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A body $Θ$ containing two phases, which may form a periodic composite with microstructure much smaller that the body, or which may have structure on a length scale comparable to the body, is subjected to slowly time varying boundary conditions that would produce an approximate uniform field in $Θ$ were it filled with homogeneous material. Here slowly time varying means that the wavelengths and attenuation lengths of waves at the frequencies associated with the time variation are much larger than the size of $Θ$, so that we can make a quasistatic approximation. At least one of the two phase does not have an instantaneous response but rather depends on fields at prior times. The fields may be those associated with electricity, magnetism, fluid flow in porous media, or antiplane elasticity. We find, subject to these approximations, that the time variation of the boundary conditions can be designed so boundary measurements at a specific time $t=t_0$ exactly yield the volume fractions of the phases, independent of the detailed geometric configuration of the phases. Moreover, for specially tailored time variations, the volume fraction can be exactly determined frommeasurements at any time $t$, not just at the specific time $t=t_0$. We also show how time varying boundary conditions, not oscillating at the single frequency $ω_0$, can be designed to exactly retrieve the response at $ω_0$.
description: 35 pages, 8 figures
Additional file 2: of Estimated intraoperative blood loss correlates with postoperative cardiopulmonary complications and length of stay in patients undergoing video-assisted thoracoscopic lung cancer lobectomy: a retrospective cohort study
Creators: name: Li, Shuangjiang
name: Zhou, Kun
name: Lai, Yutian
name: Shen, Cheng
name: Wu, Yanming
name: Che, Guowei
Publisher: name: figshare
Year: 2018
Subjects: Space Science
Medicine
Developmental Biology
Marine Biology

description: Table S1. Shows the comparisons of perioperative characteristics between patients with EIBL≥100 mL and with EIBL< 100 mL. (DOCX 19 kb)
Residue representations -- the rank one case
Creators: name: Roby, Simon
Publisher: name: arXiv
Year: 2022
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: Primary: 22E45, 20G05, 22D10, secondary: 43A85, 58J50

description: With each resonance of the Laplacian acting on the compactly supported sections of a homogeneous vector bundle over a Riemannian symmetric space of the non-compact type, One can associate a residue representation. The purpose of this paper is to study them. The symmetric space is assumed to have rank-one but the irreducible representation τ of K defining the vector bundle is arbitrary. We give an algorithm that aims at determining if these representations are irreducible, finding their Langlands parameters, their Gelfand-Kirillov dimensions and wave front sets. As an example, we apply this algorithm to the Laplacian of the p-forms in the cases of all the classical real rank-one Lie groups.
Microsporidian diversity of the Pacific Northwest : microsporidiosis in a marine nematode
Creators: name: Garcia, Alex Mauricio Ardila
Publisher: name: University of British Columbia
Year: 2016

description: Microsporidia are a diverse group of spore-forming obligate endoparasitic fungi that have over 1,300 named species. Microsporidian spores are ubiquitous in the environment, but species diversity remains vastly unexplored, as the total number of species is suspected to equal that of their hosts. Microsporidian parasites are also model organisms for the study of genome reduction since they possess some of the smallest eukaryotic genomes known to date. To examine the diversity of microsporidian parasites in the environment, I screened for the presence of microsporidian parasites in poorly sampled reservoirs: soil, sand, and compost. I amplified ribosomal DNA (rDNA) sequences for 23 undescribed and three described microsporidian species that were highly diverse phylogenetically, including representatives from four of the five major microsporidian clades. Molecular screening for the hosts revealed that one undescribed microsporidian infected a free-living marine nematode (Odontophora rectangula). I characterized the infection and ultrastructure of the parasite by transmission electron microscopy and fluorescent in situ hybridization. It is a novel microsporidian that I named Sporanauta perivermis (“marine spore of roundworms”). S. perivermis infects the hypodermal, muscle, and reproductive tissues of adult O. rectangula. However, the infection pattern differed between genders where only reproductive tissues were infected in adult females (uteri and eggs), suggesting that S. perivermis is transmitted vertically. Juvenile hosts showed similar infection patterns to adults, and infection pattern allowed prediction of host gender prior to adulthood. Phylogenetic analyses revealed that S. perivermis is sister to a clade containing the Daphnia-infecting microsporidian Ordospora colligata and the Encephalitozoon lineage (five species), which contains three species that infect humans. A genomic survey of S. perivermis indicated high levels of similarity in gene content (over 90%), gene length, and synteny between S. perivermis, O. colligata and Encephalitozoon. S. perivermis and O. colligata shared chromosomal arrangements that were not present in Encephalitozoon genomes, including chromosomal rearrangements that could be linked to genome reduction mechanisms. The genome size of S. perivermis is at least 2.2 Mbp, but is likely larger since its intergenic regions were longer, on average, than those of relatives with genome sizes of 2.3-3.0 Mbp.