cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum Criticality in a Layered Iridate
Creators: name: Samanta, Kousik
name: Souza, Jean C.
name: Rigitano, Danilo
name: Morales, Adimir I.
name: Pagliuso, Pascoal G.
name: Granado, Eduardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Iridates provide a fertile ground to investigate correlated electrons in the presence of strong spin-orbit coupling. Bringing these systems to the proximity of a metal-insulator quantum phase transition is a challenge that must be met to access quantum critical fluctuations with charge and spin-orbital degrees of freedom. Here, electrical transport and Raman scattering measurements provide evidence that a metal-insulator quantum critical point is effectively reached in 5 % Co-doped Sr$_2$IrO$_4$ with high structural quality. The dc-electrical conductivity shows a linear temperature dependence that is successfully captured by a model involving a Co acceptor level at the Fermi energy that becomes gradually populated at finite temperatures, creating thermally-activated holes in the $J_{\text {eff}}=1/2$ lower Hubbard band. The so-formed quantum critical fluctuations are exceptionally heavy and the resulting electronic continuum couples with an optical phonon at all temperatures. The magnetic order and pseudospin-phonon coupling are preserved under the Co doping. This work brings quantum phase transitions, iridates and heavy-fermion physics to the same arena.
description: 30 pages, 5 main figures, 7 supplementary figures; to appear in Communications Physics
Jan Surman, Gerald Mozetič (Hrsg.), Dwa życia Ludwika Gumplowicza. Wybór tekstów
Creators: name: Guesnet, François
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 4 (2014)
$U(1)_{L_μ-L_τ}$ for Light Dark Matter, $g_μ-2$, the $511$ keV excess and the Hubble Tension
Creators: name: Drees, Manuel
name: Zhao, Wenbin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we introduce a light Dirac particle $ψ$ as thermal dark matter candidate in a $U(1)_{L_μ-L_τ}$ model. Together with the new gauge boson $X$, we find a possible parameter space with $m_X \simeq 20$ MeV, $U(1)_{L_μ-L_τ}$ coupling $g_X \simeq 5 \cdot 10^{-4}$ and $m_ψ\gtrsim m_X/2$ where the $(g-2)_μ$ anomaly, dark matter, the Hubble tension, and (part of) the excess of $511$ keV photons from the region near the galactic center can be explained simultaneously. This model is safe from current experimental and astrophysical constraints, but can be probed by the next generation of neutrino experiments as well as low-energy $e^+e^-$ colliders.
description: 19 pages, 4 figures; comments welcome; v2: typos corrected, discussion modified in sec.4 ,references updated
Variational methods in relativistic quantum mechanics
Creators: name: Esteban, Maria J.
name: Lewin, Mathieu
name: séré, Eric
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This review is devoted to the study of stationary solutions of linear and nonlinear equations from relativistic quantum mechanics, involving the Dirac operator. The solutions are found as critical points of an energy functional. Contrary to the Laplacian appearing in the equations of nonrelativistic quantum mechanics, the Dirac operator has a negative continuous spectrum which is not bounded from below. This has two main consequences. First, the energy functional is strongly indefinite. Second, the Euler-Lagrange equations are linear or nonlinear eigenvalue problems with eigenvalues lying in a spectral gap (between the negative and positive continuous spectra). Moreover, since we work in the space domain R^3, the Palais-Smale condition is not satisfied. For these reasons, the problems discussed in this review pose a challenge in the Calculus of Variations. The existence proofs involve sophisticated tools from nonlinear analysis and have required new variational methods which are now applied to other problems.
Comparative transcriptome analysis reveals immunoregulation mechanism of lncRNA-mRNA in gill and skin of Large Yellow Croaker
Creators: name: Bai, Yulin
Publisher: name: figshare
Year: 2021
Subjects: subject: 60406 Genetic Immunology
subject: FOS: Biological sciences

description: Cryptocaryonosis caused by Cryptocaryon irritans is one of the major diseases of large yellow croaker (Larimichthys crocea), which lead to massive economic losses annually to the aquaculture industry of L. crocea. Though the pathogenesis for cryptocaryonosis has been researched by a series of transcriptome studies under different infection conditions, little is known about the roles of tissue-specifically expressed long non-coding RNAs and genes during the infection of C. irritans. In this study, by comparing transcriptome data from different tissues of L. crocea, we identified tissue-specific transcripts in the gills and skin, including 507 DE lncRNAs and 1592 DEGs identified in the gills, and 110 DE lncRNAs and 1160 DEGs identified in the skin. Furthermore, we constructed transcriptome co-expression profiles of L. crocea gill and skin, including 7,503 long noncoding RNAs (lncRNAs) and 23,172 protein-coding genes. Gene Ontology (GO) annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses showed that the DEGs and the target genes of the DE lncRNAs in the gill were specifically enriched in several pathways related to immune such as HIF-1 signaling pathway. The target genes of DE lncRNAs and DEGs in the skin are specifically enriched in the complement and coagulation cascade pathways. Co-expression network analysis identified 15 hub genes including NFKBIA, GADD45, PTGS2, TNFAIP3, CEBPB, TLR5, TOE1, CCL4, DDIT4 and so on, and 5 hub DE lncRNAs including MSTRG.24134.4, MSTRG.3038.5, MSTRG.27019.3, MSTRG.26559.1, and MSTRG.10983.1. The expression patterns of 6 randomly selected differentially expressed immune-related genes were validated using the quantitative real-time PCR method. In short, our study is helpful to explore the potential interplay between lncRNAs and protein coding genes in different tissues of L. crocea post C. irritans and the molecular mechanism of pathogenesis for cryptocaryonosis.
Timonius lasianthoides Valeton 1909
Creators: name: Chen, Junhao
name: Wong, Khoon Meng
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Gentianales
Rubiaceae
Timonius
Timonius lasianthoides

description: Timonius lasianthoides Valeton (1909a: 48)
Type: —CENTRAL BORNEO. Jelaeh Kedanim, Jul 1896 (♀), Jaheri (Exp Nieuwenhuis) 172 (lectotype BO [acc 1437765], designated here; isolectotype BO [acc 1437766]).
Notes: —Of the four collections cited in the protologue (Nieuwenhuis 172, de Vriese s.n., Hallier s.n. and Teijsmann s.n.), only “ Nieuwenhuis 172 ” has a collection number indicated. One of the duplicates in BO (bearing the labels “leg. Jaheri” and “Exp. Nieuwenhuis”) is the best preserved and is therefore selected as lectotype.
description: Published as part of Chen, Junhao & Wong, Khoon Meng, 2020, Typification and nomenclatural notes on Bornean Timonius (Rubiaceae: Guettardeae), pp. 114-120 in Phytotaxa 446 (2) on page 117, DOI: 10.11646/phytotaxa.446.2.4, http://zenodo.org/record/13877877
Leveraging eLearning for Human Resource Development in Academic Libraries in Nigeria
Creators: name: Chukwueke, Chukwuemeka
name: Echezona, Ifeoma R.
name: Ibegbulam, Ijeoma
name: Ugwu, Cyprian I.
Publisher: name: AfLIA
Year: 2023
Subjects: classificationCode: 461006
subject: Library studies

description: The study focuses on leveraging eLearning for human resource development in Nigerian academic libraries. The descriptive survey design was adopted with a focus on 18 first-generation Nigerian academic libraries purposefully selected across the nation’s six (6) geopolitical zones. Data was collected using an open-ended online survey which was administered to the respondents using social networking platforms and emails. Out of the 180 respondents targeted, 163 responded, giving a response rate of 90.5%. Data collected were analysed using frequency counts, simple percentages, mean scores, and standard deviation. Findings show a high extent of adoption of eLearning for human resource development in Nigerian academic libraries in the areas of new staff orientation, self-paced online courses, and library management training, among other areas. This adoption was found to be effective in the areas of improved work performance from capacity building, update and development of skills, knowledge, and abilities, and improved organisational innovation and competitiveness, among others. The study also found high resistance to change among employees, high cost of internet access, and high cost of technology as part of the challenges to leveraging eLearning. The study also reveals some strategies for the effective adoption of eLearning for human resource development of academic librarians including the allocation of more resources to eLearning, increased availability of technological facilities in libraries, and the strict monitoring of eLearning platforms to guide against unprofessionalism. Based on the findings, the study recommended that academic library authorities should make to the modern trend of human resource development by adopting eLearning platforms and systems, among other things.
Radio spectra and polarisation properties of radio-loud Broad Absorption Line Quasars
Creators: name: Montenegro-Montes, F. M.
name: Mack, K. -H.
name: Vigotti, M.
name: Benn, C. R.
name: Carballo, R.
name: Gonzalez-Serrano, J. I.
name: Holt, J.
name: Jimenez-Lujan, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present multi-frequency observations of a sample of 15 radio-emitting Broad Absorption Line Quasars (BAL QSOs), covering a spectral range between 74 MHz and 43 GHz. They display mostly convex radio spectra which typically peak at about 1-5 GHz (in the observer's rest-frame), flatten at MHz frequencies, probably due to synchrotron self-absorption, and become steeper at high frequencies, i.e., >~ 20 GHz. VLA 22-GHz maps (HPBW ~ 80 mas) show unresolved or very compact sources, with linear projected sizes of <= 1 kpc. About 2/3 of the sample look unpolarised or weakly polarised at 8.4 GHz, frequency in which reasonable upper limits could be obtained for polarised intensity. Statistical comparisons have been made between the spectral index distributions of samples of BAL and non-BAL QSOs, both in the observed and the rest-frame, finding steeper spectra among non-BAL QSOs. However constraining this comparison to compact sources results in no significant differences between both distributions. This comparison is consistent with BAL QSOs not being oriented along a particular line of sight. In addition, our analysis of the spectral shape, variability and polarisation properties shows that radio BAL QSOs share several properties common to young radio sources like Compact Steep Spectrum (CSS) or Gigahertz-Peaked Spectrum (GPS) sources.
description: 18 pages, 11 Postscript figures, 12 Tables. Accepted for publication in MNRAS
Dokumente und Materialien zur ostmitteleuropäischen Geschichte
Creators: name: Dyroff, Stefan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 3 (2013): Fear and Fascination: War, Enemies, and the Other in the Soviet Bloc through the 1950s
Lophiomus Gill 1883
Creators: name: Chen, Hsuan-Pu
name: Lee, Mao-Ying
name: Chen, Wei-Jen
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Lophiiformes
Lophiidae
Lophiomus

description: Key to world species of Lophiomus
1. Floor of mouth without conspicuous dark marking (Fig. 12D); dorsal-fin spines 5; OPSOP less than 30% of HW ............................................................................................ Lm. immaculioralis sp. nov.
– Floor of mouth with conspicuous dark markings (Figs 8D, H, 9C, G, 10C, 11D, H, 13D, H, 14D); dorsal-fin spines 6; OPSOP more than 30% of HW ......................................................................... 2
2. Body color brown (Fig. 8A, C, E, G); floor of mouth with irregular or circular pale pattern on dark background (Fig. 8D, H); pectoral-fin rays 21–23 (mostly 22, rarely 21 and 23) (Table 6) .............. .................................................................................................................. Lm. setigerus (Vahl, 1797)
– Body color brown or pale khaki (Figs 10–11, 13); the floor of mouth not as above; pectoral-fin rays not less than 23 ................................................................................................................................. 3
3. Peritoneum light (Fig. 9); floor of mouth with anastomosing dark patterns in the middle (Figs 10C, 11D, H); pectoral-fin rays 24–25; pelvic-fin rays 7 .................. Lm. laticeps (Ogilby, 1910) stat. rev.
– Peritoneum black (at least in adults) (Figs 13B, 14B); floor of mouth with reticulate pattern (Figs 13D, H, 14D); pectoral-fin rays 23–24; pelvic-fin rays 6 or 7 ................................................................... 4
4. Body color pale khaki (Fig. 13A, C, E, G); esca pennant-like flap without cirri (Fig. 16C); pelvic-fin rays 6; DS4 8.4–17.3% of the SL; SNW 31.8–39.5%, ISP 40.6–45.4%, OPSOP 47.3–53.6% of the HL ............................................................................................................... Lm. nigriventris sp. nov.
– Body color brown (Fig. 14A–B); esca tassel-like or pennant-like flap with moderately long cirri (Fig. 16E–F); pelvic-fin rays 7; DS4 16.7–24.0% of the SL; SNW 41.9–55.7%, ISP 48.6–56.7%, OPSOP 55.5–65.7% of the HL .......................................................................... Lm. carusoi sp. nov.
description: Published as part of Chen, Hsuan-Pu, Lee, Mao-Ying & Chen, Wei-Jen, 2024, Integrative taxonomy reveals unanticipated hidden diversity in the monotypic goosefish genus Lophiomus (Teleostei, Lophiidae), with description of three new species and resurrection of Chirolophius laticeps Ogilby, 1910, pp. 239-287 in European Journal of Taxonomy 943 on page 278, DOI: 10.5852/ejt.2024.943.2599, http://zenodo.org/record/12806098
A homogeneous Gibbons-Hawking ansatz and Blaschke products
Creators: name: Geiges, Hansjörg
name: Gonzalo, Jesús
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53C26, 53D10

description: A homogeneous Gibbons-Hawking ansatz is described, leading to 4-dimensional hyperkahler metrics with homotheties. In combination with Blaschke products on the unit disc in the complex plane, this ansatz allows one to construct infinite-dimensional families of such hyperkahler metrics that are, in a suitable sense, complete. Our construction also gives rise to incomplete metrics on 3-dimensional contact manifolds that induce complete Carnot-Caratheodory distances.
description: 16 pages, 5 figures
Semi-supervised Viewpoint Estimation with Geometry-aware Conditional Generation
Creators: name: Mariotti, Octave
name: Bilen, Hakan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: There is a growing interest in developing computer vision methods that can learn from limited supervision. In this paper, we consider the problem of learning to predict camera viewpoints, where obtaining ground-truth annotations are expensive and require special equipment, from a limited number of labeled images. We propose a semi-supervised viewpoint estimation method that can learn to infer viewpoint information from unlabeled image pairs, where two images differ by a viewpoint change. In particular our method learns to synthesize the second image by combining the appearance from the first one and viewpoint from the second one. We demonstrate that our method significantly improves the supervised techniques, especially in the low-label regime and outperforms the state-of-the-art semi-supervised methods.
Josephson-Like Behaviour of Granular Carbon Films
Creators: name: Lebedev, Sergey G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: This work presents the study of some new anomalous electromagnetic effects in graphite-like thin carbon films. These are: The fast switching (1nanosecond) of electrical conductivity The detection of microwave radiation and its temperature dependence The oscillations of film stack magnetization in the magnetic field of 1-5 T. The optical radiation under process of spasmodic switching of conductivity Results of magnetic force microscopy (MFM), DC SQUID magnetization, reversed Josephson effect (RJE), and resistance measurements in thin carbon arc (CA) films are presented. The observation of a RJE induced voltage as well as its rf frequency, input amplitude, and temperature dependence reveals the existence of Josephson-like Junction arrays. Oscillating behavior of the DC SQUID magnetization reminiscent of the Fraunhofer-like behavior of superconducting (SC) critical current in the range of 10000-50000 Oe has been observed. The DC SQUID magnetization measurement indicates a possible elementary 102 nm SC loop; this is compared to MFM direct observations of magnetic clusters with a median size of 165 nm. The results obtained provides a basis for non-cryogenic elecrtonic devices utilizing the Josephson effect.
description: 18 pages, 6 figures. The report will presented on the European Conference on Applied Superconductivity (EUCAS2007)
Waldemar Łazuga, Kalkulować ... Polacy na szczytach c.k. monarchii
Creators: name: Hein-Kircher, Heidi
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 4 (2014)
A method for variable selection in a multivariate functional linear regression model with multiple scalar responses
Creators: name: Mbina, Alban Mbina
name: Nkiet, Guy Martial
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Biophysics
subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: In this paper, we propose a new functional variable selection procedure for a functional linear model with multiple scalar responses and multiple functional predictors. This procedure takes into account the loss incurred by selecting a subset of variables, measured by a criterion depending on this subset and involving covariance matrices of variables obtained from basis expansions of the initial functional predictors. By sorting in decreasing order the values of this criterion on the subsets obtained by removing each predictor, the set of relevant predictors is expressed as depending on two parameters which then need to be estimated. Estimates of these parameters based on appropriate penalizations of estimates of the criterion are then introduced, thereby leading to our proposal for variable selection. Simulation studies are carried out to evaluate the finite sample performance of the proposed method with comparison to that of several existing methods, and also a weather data set is analyzed.
Experimental (n,$γ$) cross sections of the p-process nuclei $^{74}$Se and $^{84}$Sr
Creators: name: Dillmann, I.
name: Heil, M.
name: Käppeler, F.
name: Rauscher, T.
name: Thielemann, F. -K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The nucleosynthesis of elements beyond iron is dominated by the s and r processes. However, a small amount of stable isotopes on the proton-rich side cannot be made by neutron capture and are thought to be produced by photodisintegration reactions on existing seed nuclei in the so-called "p process". So far most of the p-process reactions are not yet accessible by experimental techniques and have to be inferred from statistical Hauser-Feshbach model calculations. The parametrization of these models has to be constrained by measurements on stable proton-rich nuclei. A series of (n,$γ$) activation measurements, related by detailed balance to the respective photodisintegrations, were carried out at the Karlsruhe Van de Graaff accelerator using the $^7$Li(p,n)$^7$Be source for simulating a Maxwellian neutron distribution of kT= 25 keV. First results for the experimental (n,$γ$) cross sections of the light p nuclei $^{74}$Se and $^{84}$Sr are reported. These experimental values were used for an extrapolation to the Maxwellian averaged cross section at 30 keV, $_{30}$, yielding 271$\pm$15 mb for $^{74}$Se, and 300$\pm$17 mb for the total capture cross section of $^{84}$Sr. The partial cross section to the isomer in $^{85}$Sr was found to be 190$\pm$10 mb.
description: 10 pages, 5 figures
Two-flow magnetohydrodynamical jets around young stellar objects
Creators: name: Casse, Fabien
name: Meliani, Zakaria
name: Sauty, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first-ever simulations of non-ideal magnetohydrodynamical (MHD) stellar winds coupled with disc-driven jets where the resistive and viscous accretion disc is self-consistently described. The transmagnetosonic, collimated MHD outflows are investigated numerically using the VAC code. Our simulations show that the inner outflow is accelerated from the central object hot corona thanks to both the thermal pressure and the Lorentz force. In our framework, the thermal acceleration is sustained by the heating produced by the dissipated magnetic energy due to the turbulence. Conversely, the outflow launched from the resistive accretion disc is mainly accelerated by the magneto-centrifugal force. We also show that when a dense inner stellar wind occurs, the resulting disc-driven jet have a different structure, namely a magnetic structure where poloidal magnetic field lines are more inclined because of the pressure caused by the stellar wind. This modification leads to both an enhanced mass ejection rate in the disc-driven jet and a larger radial extension which is in better agreement with the observations besides being more consistent.
description: Accepted for publication in Astrophysics & Space Science. Referred proceeding of the fifth Mont Stromlo Symposium Dec. 1-8 2006, Canberra, Australia. 5 pages, 3 figures. For high resolution version of the paper, please click here http://www.apc.univ-paris7.fr/~fcasse/publications.html
Franco La Polla. La serietà nel gioco e... il Musical
Creators: name: Andrisano, Angela Maria
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: La Polla was a leading scholar in the field of the American Cinema and   the musical films. This paper focuses on his fascination with classical  culture, Euripidean theatre and the modern musical.
description: Annali Online  Lettere - Ferrara, VI 1-2 (2011)
Flow Field Evolution of a Decaying Sunspot
Creators: name: Deng, Na
name: Choudhary, Debi Prasad
name: Tritschler, Alexandra
name: Denker, Carsten
name: Liu, Chang
name: Wang, Haimin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the evolution of the flows and horizontal proper motions in and around a decaying follower sunspot based on time sequences of two-dimensional spectroscopic observations in the visible and white light imaging data obtained over six days from June~7 to~12, 2005. During this time period the sunspot decayed gradually to a pore. The spectroscopic observations were obtained with the Fabry-Pérot based Visible-Light Imaging Magnetograph (VIM) in conjunction with the high-order adaptive optics (AO) system operated at the 65 cm vacuum reflector of the Big Bear Solar Observatory (BBSO). We apply local correlation tracking (LCT) to the speckle reconstructed time sequences of white-light images around 600 nm to infer horizontal proper motions while the Doppler shifts of the scanned \FeI line at 630.15 nm are used to calculate line-of-sight (LOS) velocities with sub-arcsecond resolution. We find that the dividing line between radial inward and outward proper motions in the inner and outer penumbra, respectively, survives the decay phase. In particular the moat flow is still detectable after the penumbra disappeared. Based on our observations three major processes removed flux from the sunspot: (a) fragmentation of the umbra, (b) flux cancelation of moving magnetic features (MMFs; of the same polarity as the sunspot) that encounter the leading opposite polarity network and plages areas, and (c) flux transport by MMFs (of the same polarity as the sunspot) to the surrounding network and plage regions that have the same polarity as the sunspot.
description: 9 pages, 7 figures, The Astrophysical Journal, accepted September, 2007
Productivity, Portability, Performance: Data-Centric Python
Creators: name: Ziogas, Alexandros Nikolaos
name: Schneider, Timo
name: Ben-Nun, Tal
name: Calotoiu, Alexandru
name: De Matteis, Tiziano
name: Licht, Johannes de Fine
name: Lavarini, Luca
name: Hoefler, Torsten
Publisher: name: arXiv
Year: 2021
Subjects: subject: Programming Languages (cs.PL)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: Python has become the de facto language for scientific computing. Programming in Python is highly productive, mainly due to its rich science-oriented software ecosystem built around the NumPy module. As a result, the demand for Python support in High Performance Computing (HPC) has skyrocketed. However, the Python language itself does not necessarily offer high performance. In this work, we present a workflow that retains Python's high productivity while achieving portable performance across different architectures. The workflow's key features are HPC-oriented language extensions and a set of automatic optimizations powered by a data-centric intermediate representation. We show performance results and scaling across CPU, GPU, FPGA, and the Piz Daint supercomputer (up to 23,328 cores), with 2.47x and 3.75x speedups over previous-best solutions, first-ever Xilinx and Intel FPGA results of annotated Python, and up to 93.16% scaling efficiency on 512 nodes.
Peter Drews, Die tschechische Rezeption deutscher Belletristik 1900-1945
Creators: name: Joachimsthaler, Jürgen
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 3 (2013): Fear and Fascination: War, Enemies, and the Other in the Soviet Bloc through the 1950s
Tradurre Dioniso. Osservazione a margine di una recente traduzione delle Baccanti
Creators: name: Iannucci, Alessandro
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: In this paper I discuss the recent edition of Euripides’ Bacchae with introduction, translation and commentary by D. Susanetti (Roma,  Carocci, 2010). In particular, through an active reading of this book, I  focus on several relevant points, such as the translation of classical  drama in a contemporary, easy-to-read and performable language, and the  finalization of the exegesis of Greek texts addressed to a  non-classicist or to a non Greek-reading public.
description: Annali Online  Lettere - Ferrara, VI 1-2 (2011)
Microscopic formulation of the S-matrix in AdS/CFT
Creators: name: Sakai, Kazuhiro
name: Satoh, Yuji
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop the derivation we proposed in hep-th/0703177 of the dressing phase of the S-matrix in the AdS/CFT correspondence in the framework of the underlying bare integrable model. We elaborate the configuration of the Bethe roots describing the physical vacuum, which consists of a long Bethe string stretched along the imaginary axis and stacks distributed along the real axis. We determine the distribution of all Bethe roots in the thermodynamic limit. We then directly compute the scattering phase of the fundamental excitations over the physical vacuum and reproduce the BHL/BES dressing phase.
description: 23 pages, no figures; v2: references and minor clarifications added, version to be published in JHEP
Timonius matangensis Valeton 1909
Creators: name: Chen, Junhao
name: Wong, Khoon Meng
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Gentianales
Rubiaceae
Timonius
Timonius matangensis

description: Timonius matangensis Valeton (1909a: 58)
Type: —BORNEO. Malaysia, Sarawak, Matang, 1907 (♂), Hewitt Rb 46.2 (holotype BO [acc 1435130]).
Notes: —The name Timonius matangensis was validly published but the only specimen cited in the protologue (Hewitt Rb 56.2) is untraceable. However, there is a specimen in BO with a very close match to the protologue (Hewitt Rb 46.2): it was collected in the same locality (Matang), possesses only staminate flowers (consistent with the protologue) and was determined by Valeton himself in 1908. Thus, the original type citation seems to be erroneous and is corrected here.
description: Published as part of Chen, Junhao & Wong, Khoon Meng, 2020, Typification and nomenclatural notes on Bornean Timonius (Rubiaceae: Guettardeae), pp. 114-120 in Phytotaxa 446 (2) on page 117, DOI: 10.11646/phytotaxa.446.2.4, http://zenodo.org/record/13877877
Magnetohydrodynamic spectroscopy of a non-adiabatic solar atmosphere
Creators: name: Claes, Niels
name: Keppens, Rony
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The quantification of all possible waves and instabilities in a given system is of paramount importance, and knowledge of the full magnetohydrodynamic (MHD) spectrum allows one to predict the (in)stability of a given equilibrium state. This is highly relevant in many (astro)physical disciplines, and when applied to the solar atmosphere it may yield various new insights in processes like prominence formation and coronal loop oscillations. In this work we present a detailed, high-resolution spectroscopic study of the solar atmosphere, where we use our newly developed Legolas code to calculate the full spectrum with corresponding eigenfunctions of equilibrium configurations that are based on fully realistic solar atmospheric models, including gravity, optically thin radiative losses and thermal conduction. Special attention is given to thermal instabilities, known to be responsible for the formation of prominences, together with a new outlook on the thermal and slow continua and how they behave in different chromospheric and coronal regions. We show that thermal instabilities are unavoidable in our solar atmospheric models and that there exist certain regions where both the thermal, slow and fast modes all have unstable wave mode solutions. We also encounter regions where the slow and thermal continua become purely imaginary and merge on the imaginary axis. The spectra discussed in this work illustrate clearly that thermal instabilities (both discrete and continuum modes) and magneto-thermal overstable propagating modes are ubiquitous throughout the solar atmosphere, and may well be responsible for much of the observed fine-structuring and multi-thermal dynamics.
description: Accepted in Solar Physics
Liina Lukas u.a. (Hrsg.), Umweltphilosophie und Landschaftsdenken im baltischen Kulturraum / Environmental Philosophy and Landscape Thinking
Creators: name: Obertreis, Julia
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 4 (2014)
title: THE IMPACT OF ENGAGEMENT WITH THE ARTS ON THE HEALTH AND WELLBEING OF HOSPITAL INPATIENTS WITH DEMENTIA
Creators: name: Windle, G.
Publisher: name: Royal College of Music
Year: 2019

description: The global rise of dementia has provoked a multidimensional response from research, policy, and practice sectors. Care for dementia in hospital settings is of particular concern given the outsized lengths of stay and readmission rates. To respond to the resulting care needs, arts in health programmes are increasingly implemented in hospitals, with a central focus on supporting those with dementia. This PhD aimed to explore patterns of engagement with the arts and their psychosocial effects on hospital inpatients with dementia, with a particular focus on the differences in psychological impact between traditional and digital modes of engagement. The study used a sequential mixed methods design organised across three inter-related studies. Study 1, a cross-sectional study of 123 inpatients, used a questionnaire battery consisting of validated measures for loneliness, quality of life, and depression alongside questions regarding current, past-year, and life course engagement with different art forms and cultural activities. High rates of loneliness and depression were measured among participants, but current individual engagement with the arts was associated with less loneliness and increased quality of life. Notably, passive and solitary activities such as reading and watching television were associated with lower levels of loneliness. Study 2, a focused ethnographic study of 43 participants, focused on digital and traditional arts and music programmes at an acute care NHS trust. This study found that the novelty of digital art led to focused individual engagement while traditional art groups were more likely to engage socially. Additionally, this study presented a model for patient experience of hospital art groups describing the discrete and interactive effects of arts engagement, social interaction, and environment. Study 3, a 3-arm controlled study with 90 participants, compared validated before and after measures of anxiety and wellbeing for traditional art, digital art, and control activities. This study found short term improvements in wellbeing in both digital and traditional art groups and lowered anxiety in the traditional art group compared with a control group.  The thesis triangulates data from the studies to explicate patterns of arts engagement and their effects. A methodological contribution is made by using both qualitative and quantitative methods to connect intra-activity data with outcome measures. Theoretical contributions include considerations of the balance between novelty and familiarity in arts engagement, the roles of the environment and social engagement in a hospital setting, and the use of art for both reminiscence and expression in dementia.
A Muon-Ion Collider at BNL: the future QCD frontier and path to a new energy frontier of $μ^+μ^-$ colliders
Creators: name: Acosta, Darin
name: Li, Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We propose the development and construction of a novel muon-ion collider (MuIC) at Brookhaven National Laboratory (BNL) in the USA as an upgrade to succeed the electron-ion collider (EIC) that is scheduled to commence in the early 2030s, by a joint effort of the nuclear and particle physics communities. The BNL facility could accommodate a muon storage beam with an energy up to about 1~TeV with existing magnet technology. When collided with a 275~GeV hadron beam, the MuIC center-of-mass energy of about 1~TeV will extend the kinematic coverage of deep inelastic scattering physics at the EIC (with polarized beams) by more than an order of magnitude in $Q^2$ and $x$, opening a new QCD frontier to address many fundamental scientific questions in nuclear and particle physics. This coverage is comparable to that of the proposed Large Hadron-Electron Collider (LHeC) at CERN, but with complementary lepton and hadron kinematics and beam polarization. Additionally, the developmentof a MuIC at BNL will focus the worldwide R\&D efforts on muon collider technology and serve as a demonstrator toward a future muon-antimuon collider at {$\mathcal O$}(10)~TeV energies, which is an attractive option to reach the next high energy frontier in particle physics at an affordable cost and a smaller footprint than a future circular hadron collider. We discuss here the possible design parameters of the MuIC, kinematic coverage, science cases, and detector design considerations including estimates of resolutions on DIS kinematic variables. A possible road map toward the future MuIC and muon-antimuon colliders is also presented.
description: 10 pages, 4 figures, 4 tables. Additional references and discussion of synergies with nuSTORM are added. Comments are welcome!
Timonius ovalis Boerlage 1891
Creators: name: Chen, Junhao
name: Wong, Khoon Meng
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Gentianales
Rubiaceae
Timonius
Timonius ovalis

description: Timonius ovalis (Korthals 1851: 216) Boerlage (1891: 132)
Basionym: Polyphragmon ovale Korth.
Type: —BORNEO. Sin. loc., sin. dat. (♂), Korthals s.n. (lectotype L [L0001448], designated here; probable isolectotype L [L0057539]).
Notes: —Although Korthals (1851) cited only a single locality (‘montem Pamatton’) in the protologue, there are two L sheets from Borneo without locality details labelled as types. Consistent with the protologue, both specimens possess staminate flowers. Hence, one of the sheets is here selected as lectotype.
description: Published as part of Chen, Junhao & Wong, Khoon Meng, 2020, Typification and nomenclatural notes on Bornean Timonius (Rubiaceae: Guettardeae), pp. 114-120 in Phytotaxa 446 (2) on page 118, DOI: 10.11646/phytotaxa.446.2.4, http://zenodo.org/record/13877877
A dependence of the enhancement factor in energy-weighted sums for isovector giant resonances
Creators: name: Kolomietz, V. M.
name: Lukyanov, S. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We consider the energy weighted sums (EWS) for isovector giant dipole resonances (IVGDR) in finite nuclei within Landau kinetic theory. The dependence of both IVGDR energy, $E_{IVGDR}$, and the EWS enhancement factor, $κ(A)$, on the mass number $A$ occurs because of the boundary condition on the moving nuclear surface. The values of $E_{IVGDR}A^{1/3}$ and $κ(A)$ increase with $A$. The obtained value of the enhancement factor is about 10% for light nuclei and reaches approximately 20% for heavy nuclei. A fit of the enhancement factor to the proper experimental data provides a value for the isovector Landau amplitude of $F'_1\simeq 1.1$.
description: 14 pages, 3 figures, revised version, published in Phys. Rev. C79, 024321 (2009)
Stevie Simkin, Straw Dogs Basingstoke, Palgrave Macmillan (Controversies Series) 2011, pp. 155, ISBN 978-0-230-29670-1
Creators: name: Pavesi, Diletta
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2013

description: Annali Online  Lettere - Ferrara, VIII 1 (2013)
Special fast diffusion with slow asymptotics. Entropy method and flow on a Riemannian manifold
Creators: name: Bonforte, Matteo
name: Grillo, Gabriele
name: Vazquez, Juan Luis
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B45, 35B65, 35K55, 35K65, 58J35

description: We consider the asymptotic behaviour of positive solutions $u(t,x)$ of the fast diffusion equation $u_t=Δ(u^{m}/m)={\rm div} (u^{m-1}\nabla u)$ posed for $x\in\RR^d$, $t>0$, with a precise value for the exponent $m=(d-4)/(d-2)$. The space dimension is $d\ge 3$ so that $m<1$, and even $m=-1$ for $d=3$. This case had been left open in the general study \cite{BBDGV} since it requires quite different functional analytic methods, due in particular to the absence of a spectral gap for the operator generating the linearized evolution. The linearization of this flow is interpreted here as the heat flow of the Laplace-Beltrami operator of a suitable Riemannian Manifold $(\RR^d,{\bf g})$, with a metric ${\bf g}$ which is conformal to the standard $\RR^d$ metric. Studying the pointwise heat kernel behaviour allows to prove {suitable Gagliardo-Nirenberg} inequalities associated to the generator. Such inequalities in turn allow to study the nonlinear evolution as well, and to determine its asymptotics, which is identical to the one satisfied by the linearization. In terms of the rescaled representation, which is a nonlinear Fokker--Planck equation, the convergence rate turns out to be polynomial in time. This result is in contrast with the known exponential decay of such representation for all other values of $m$.
description: 37 pages
Photon antibunching in a cavity-QED system with two Rydberg-Rydberg interaction atoms
Creators: name: Huang, Tong
name: Tan, Lei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose how to achieve strong photon antibunching effect in a cavity-QED system coupled with two Rydberg-Rydberg interaction atoms. Via calculating the equal time second order correlation function g(2)(0), we find that the unconventional photon blockade and the conventional photon blockade appear in the atom-driven scheme, and they are both significantly affected by the Rydberg-Rydberg interaction. We also find that under appropriate parameters, the photon antibunching and the mean photon number can be significantly enhanced by combining the conventional photon blockade and the unconventional photon blockade. In the cavity-driven scheme, the existence of the Rydberg-Rydberg interaction severely destroys the photon antibunching under the unconventional photon blockade mechanism. These results will help to guide the implementation of the single photon emitter in the Rydberg atoms-cavity system.
description: 14 pages, 15 figure
Valentina von Tulechov, Tomas Garrigue Masaryk. Sein kritischer Realismus in Aus­wirkung auf sein Demokratie- und Europaverständnis
Creators: name: Munke, Martin
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 3 (2013): Fear and Fascination: War, Enemies, and the Other in the Soviet Bloc through the 1950s
Linear density response function within the time-dependent exact-exchange approximation
Creators: name: Hellgren, Maria
name: von Barth, Ulf
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have calculated the frequency-dependent exact exchange (EXX) kernel of time-dependent (TD) density functional theory employing our recently proposed computational method based on cubic splines. With this kernel we have calculated the linear density response function and obtained static polarizabilites, van der Waals coefficients and correlation energies for all spherical spin compensated atoms up to Argon. Some discrete excitation energies have also been calculated for Be and Ne. As might be expected, the results of the TDEXX approximation are close to those of TD Hartree-Fock theory. In addition, correlation energies obtained by integrating over the strength of the Coulomb interaction turn out to be highly accurate.
description: 10 pages, 5 figures
Erzsébet Apró, Ágnes Tóth (Hrsg.), Archivführer zur ungarndeutschen Geschichte in den Komitatsarchiven Ungarns 1760-1950
Creators: name: Kessler, Wolfgang
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 4 (2014)
A High Throughput Parallel Hash Table on FPGA using XOR-based Memory
Creators: name: Zhang, Ruizhi
name: Wijeratne, Sasindu
name: Yang, Yang
name: Kuppannagari, Sanmukh R.
name: Prasanna, Viktor K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Hash table is a fundamental data structure for quick search and retrieval of data. It is a key component in complex graph analytics and AI/ML applications. State-of-the-art parallel hash table implementations either make some simplifying assumptions such as supporting only a subset of hash table operations or employ optimizations that lead to performance that is highly data dependent and in the worst case can be similar to a sequential implementation. In contrast, in this work we develop a dynamic hash table that supports all the hash table queries - search, insert, delete, update, while allowing us to support 'p' parallel queries (p>1) per clock cycle via p processing engines (PEs) in the worst case i.e. the performance is data agnostic. We achieve this by implementing novel XOR based multi-ported block memories on FPGAs. Additionally, we develop a technique to optimize the memory requirement of the hash table if the ratio of search to insert/update/delete queries is known beforehand. We implement our design on state-of-the-art FPGA devices. Our design is scalable to 16 PEs and supports throughput up to 5926 MOPS. It matches the throughput of the state-of-the-art hash table design - FASTHash, which only supports search and insert operations. Comparing with the best FPGA design that supports the same set of operations, our hash table achieves up to 12.3x speedup.
description: 2020 IEEE High Performance Extreme Computing Conference (HPEC)
Even Faster SNN Simulation with Lazy+Event-driven Plasticity and Shared Atomics
Creators: name: Bautembach, Dennis
name: Oikonomidis, Iason
name: Argyros, Antonis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Machine Learning (cs.LG)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: We present two novel optimizations that accelerate clock-based spiking neural network (SNN) simulators. The first one targets spike timing dependent plasticity (STDP). It combines lazy- with event-driven plasticity and efficiently facilitates the computation of pre- and post-synaptic spikes using bitfields and integer intrinsics. It offers higher bandwidth than event-driven plasticity alone and achieves a 1.5x-2x speedup over our closest competitor. The second optimization targets spike delivery. We partition our graph representation in a way that bounds the number of neurons that need be updated at any given time which allows us to perform said update in shared memory instead of global memory. This is 2x-2.5x faster than our closest competitor. Both optimizations represent the final evolutionary stages of years of iteration on STDP and spike delivery inside "Spice" (/spaIk/), our state of the art SNN simulator. The proposed optimizations are not exclusive to our graph representation or pipeline but are applicable to a multitude of simulator designs. We evaluate our performance on three well-established models and compare ourselves against three other state of the art simulators.
description: Camera-ready, to appear in IEEE HPEC 2021