cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Stadtbibliothek Neuss – Visualisierung des Prozesses "Anschaffungsvorschlag über das Wunschbuch" mithilfe des Service-Blueprint-Verfahrens
Creators: name: Corvus, Georg
Publisher: name: Zenodo
Year: 2021
Subjects: Stadtbibliothek Neuss
Anschaffungsvorschlag
Wunschbuch
Service Blueprint

description: Die Stadtbibliothek Neuss bietet ihren Kunden die Möglichkeit, über das "Wunschbuch" Anschaffungsvorschläge an die Bibliothek zu übermitteln und so die Bestandsentwicklung nach eigenen Bedürfnissen und Interessen zu beeinflussen. Diese und andere Dienstleistungsprozesse lassen sich anhand des Service-Blueprint-Verfahrens visualisieren und schließlich optimieren. Das vorliegende Dokument behandelt den Prozess "Anschaffungsvorschlag über das Wunschbuch". Zu diesem Zweck wird der Prozessablauf beschrieben, beurteilt und mithilfe des Service-Blueprint-Verfahrens grafisch dargestellt.
title: Diógenes como empresa personal en Lope de Vega (y su modelo humanístico)
Creators: name: Canseco, Luis Gómez
Publisher: name: Edizioni Ca' Foscari - Digital Publishing
Year: 2014

description: Lope de Vega expressed a particular interest in the figure of the cynic philosopher Diogenes throughout his life and even used it as a personal emblem in the poem Jerusal?n conquistada. Probably followed the Benito Arias Montano’s model, who also used the Greek mathematician Archimedes as a personal emblem and even stamped his figure on the cover of the Biblia Regia.
description: Rassegna iberistica, 37 | 101 | 2014
Three-dimensional photography by holography
Creators: name: Lunazzi, J. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Color encoding of depth is shown to occur naturally in holograms that are reconstructed under white light illumination. It can be registered in a common color photograph, allowing a simple method of visual decoding by means of ordinary colored 3-D spectacles. The fundamental holographic equations and the photographic procedure required for maximum fidelity in three-dimensional reproduction are described. The result is a new kind of photograph that shows all of the views of the object in a continuous sequence. It permits an animated photographic representation and also makes it possible to adjust the degree of depth visualization when observed as a stereoscopic representation.
description: 12 pages, 4 figures
An exploration of model degeneracies with a unified phase curve retrieval analysis: The light and dark sides of WASP-43 b
Creators: name: Changeat, Quentin
name: Al-Refaie, Ahmed F.
name: Edwards, Billy
name: Waldmann, Ingo P.
name: Tinetti, Giovanna
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The analysis of exoplanetary atmospheres often relies upon the observation of transit or eclipse events. While very powerful, these snapshots provide mainly 1-dimensional information on the planet structure and do not easily allow precise latitude-longitude characterisations. The phase curve technique, which consists of measuring the planet emission throughout its entire orbit, can break this limitation and provide useful 2-dimensional thermal and chemical constraints on the atmosphere. As of today however, computing performances have limited our ability to perform unified retrieval studies on the full set of observed spectra from phase curve observations at the same time. Here, we present a new phase curve model that enables fast, unified retrieval capabilities. We apply our technique to the combined phase curve data from the Hubble and Spitzer space telescopes of the hot-Jupiter WASP-43 b. We tested different scenarios and discussed the dependence of our solution to different assumptions in the model. Our more comprehensive approach suggests that multiple interpretation of this dataset are possible but our more complex model is consistent with the presence of thermal inversions and a metal rich atmosphere, contrasting with previous data analyses, although this likely depends on the Spitzer data reduction. The detailed constraints extracted here demonstrate the importance of developing and understanding advanced phase curve techniques, which we believe will unlock access to a richer picture of exoplanet atmospheres.
description: Accepted in ApJ, 57 pages, 38 figures
Quantum Critical Paraelectrics and the Casimir Effect in Time
Creators: name: Palova, L.
name: Chandra, P.
name: Coleman, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the quantum paraelectric-ferroelectric transition near a quantum critical point, emphasizing the role of temperature as a "finite size effect" in time. The influence of temperature near quantum criticality may thus be likened to a temporal Casimir effect. The resulting finite-size scaling approach yields $\frac{1}{T^2}$ behavior of the paraelectric susceptibility ($χ$) and the scaling form $χ(ω,T) = \frac{1}{ω^2} F(\fracω{T})$, recovering results previously found by more technical methods. We use a Gaussian theory to illustrate how these temperature-dependences emerge from a microscopic approach; we characterize the classical-quantum crossover in $χ$, and the resulting phase diagram is presented. We also show that coupling to an acoustic phonon at low temperatures ($T$) is relevant and influences the transition line, possibly resulting in a reentrant quantum ferroelectric phase. Observable consequences of our approach for measurements on specific paraelectric materials at low temperatures are discussed.
description: Numerical analysis of eq. (41) corrected following the comment of Chamati and Tonchev (arXiv:0903.5229) with revised Fig 5
Sterile neutrinos, dark matter, and the pulsar velocities in models with a Higgs singlet
Creators: name: Kusenko, Alexander
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We identify the range of parameters for which the sterile neutrinos can simultaneously explain the cosmological dark matter and the observed velocities of pulsars. To satisfy all cosmological bounds, the relic sterile neutrinos must be produced sufficiently cold. This is possible in a class of models with a gauge-singlet Higgs boson coupled to the neutrinos. Sterile dark matter can be detected by the x-ray telescopes. The presence of the singlet in the Higgs sector can be tested at the Large Hadron Collider.
description: 4 pages, one figure
Binary black hole mergers from young massive and open clusters: comparison to GWTC-2 gravitational wave data
Creators: name: Fragione, Giacomo
name: Banerjee, Sambaran
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Several astrophysical scenarios have been proposed to explain the origin of the population of binary black hole (BBH) mergers detected in gravitational waves (GWs) by the LIGO/Virgo Collaboration. Among them, BBH mergers assembled dynamically in young massive and open clusters have been shown to produce merger rate densities consistent with LIGO/Virgo estimated rates. We use the results of a suite of direct, high-precision $N$-body evolutionary models of young massive and open clusters and build the population of BBH mergers, by accounting for both a cosmologically-motivated model for the formation of young massive and open clusters and the detection probability of LIGO/Virgo. We show that our models produce dynamically-paired BBH mergers that are well consistent with the observed masses, mass ratios, effective spin parameters, and final spins of the second Gravitational Wave Transient Catalog (GWTC-2).
description: 6 pages, 5 figures, accepted by ApJ Lett
Dependence of fluorescence-level statistics on bin time size in a few-atom magneto-optical trap
Creators: name: Kang, Sungsam
name: Yoon, Seokchan
name: Choi, Youngwoon
name: Lee, Jai-Hyung
name: An, Kyungwon
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We have analyzed the statistical distribution of the fluorescence signal levels in a magneto-optical trap containing a few atoms and observed that it strongly depends on the relative size of the bin time with respect to the trap decay time. We derived analytic expressions for the signal distributions in two limiting cases, long and short bin time limits, and found good agreement with numerical simulations performed regardless of the size of the bin time. We found an optimal size of the bin time for minimizing the probability of indeterminate atom numbers while providing accurate information on the instantaneous number of atoms in the trap. These theoretical results are compared with actual experimental data. We observed super-Poisson counting statistics for the fluorescence from trapped atoms, which might be attributed to uncorrelated motion of trapped atoms in the inhomogeneous magnetic field in the trap.
description: 9 pages, 9 figures
Rankin Ranch Cemetery
Creators: name: Hammond, Jon
name: Hernandez, Betty
name: Hicks, Lucille
name: Grant, Laura
name: Turner, Julie
name: Durham, Kim
name: Everson, Merlene
name: Hicks, Josh
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: This file, captured at a cemetery, contains a discussion between speakers regarding those who were buried there.
Discrimination of background events in the PolarLight X-ray polarimeter
Creators: name: Zhu, Jiahuan
name: Li, Hong
name: Feng, Hua
name: Huang, Jiahui
name: Long, Xiangyun
name: Wu, Qiong
name: Jiang, Weichun
name: Minuti, Massimo
name: Citraro, Saverio
name: Nasimi, Hikmat
name: Yang, Dongxin
name: Yu, Jiandong
name: Jin, Ge
name: Zeng, Ming
name: An, Peng
name: Baldini, Luca
name: Bellazzini, Ronaldo
name: Brez, Alessandro
name: Latronico, Luca
name: Sgro, Carmelo
name: Spandre, Gloria
name: Pinchera, Michele
name: Muleri, Fabio
name: Soffitta, Paolo
name: Costa, Enrico
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: PolarLight is a space-borne X-ray polarimeter that measures the X-ray polarization via electron tracking in an ionization chamber. It is a collimated instrument and thus suffers from the background on the whole detector plane. The majority of background events are induced by high energy charged particles and show ionization morphologies distinct from those produced by X-rays of interest. Comparing on-source and off-source observations, we find that the two datasets display different distributions on image properties. The boundaries between the source and background distributions are obtained and can be used for background discrimination. Such a means can remove over 70% of the background events measured with PolarLight. This approaches the theoretical upper limit of the background fraction that is removable and justifies its effectiveness. For observations with the Crab nebula, the background contamination decreases from 25% to 8% after discrimination, indicative of a polarimetric sensitivity of around 0.2 Crab for PolarLight. This work also provides insights into future X-ray polarimetric telescopes.
description: accepted for publication in Research in Astronomy and Astrophysics
A non-adiabatic approach to entanglement distribution over long distances
Creators: name: Razavi, Mohsen
name: Shapiro, Jeffrey H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement distribution between trapped-atom quantum memories, viz. single atoms in optical cavities, is addressed. In most scenarios, the rate of entanglement distribution depends on the efficiency with which the state of traveling single photons can be transferred to trapped atoms. This loading efficiency is analytically studied for two-level, $V$-level, $Λ$-level, and double-$Λ$-level atomic configurations by means of a system-reservoir approach. An off-resonant non-adiabatic approach to loading $Λ$-level trapped-atom memories is proposed, and the ensuing trade-offs between the atom-light coupling rate and input photon bandwidth for achieving a high loading probability are identified. The non-adiabatic approach allows a broad class of optical sources to be used, and in some cases it provides a higher system throughput than what can be achieved by adiabatic loading mechanisms. The analysis is extended to the case of two double-$Λ$ trapped-atom memories illuminated by a polarization-entangled biphoton.
description: 15 pages, 15 figures
A guinea pig model of human respiratory syncytial virus lung infection
Creators: name: Hegele, Richard G.
Publisher: name: University of British Columbia
Year: 2008

description: Children who have an episode of acute respiratory syncytial virus (RSV) bronchiolitis are at increased risk for developing asthma, a disorder characterized by reversible airway obstruction, airway hyperresponsiveness and airway inflammation. Because latent or persistent pulmonary viral infections have been implicated in the pathogenesis of the airway inflammation underlying asthma, a guinea pig model of human RSV lung infection was developed to test the hypothesis that RSV persists within the lung following resolution of acute bronchiolitis. One month old, "juvenile" guinea pigs, intranasally inoculated with human RSV, were compared on day 6 post-inoculation to two month old, "adolescent" RSV-inoculated animals and uninfected controls by clinical examination, gross lung examination and lung histopathological examination using a semi-quantitative scoring system for bronchiolar inflammation. The natural history of intrapulmonary RSV was studied in juvenile animals on days 6, 14, 60 and 125 using viral culture to test for replicating virus, transmission electron microscopy (TEM) to test for assembled virus, immunohistochemistry to test for RSV antigens and the reverse transcriptase-polymerase chain reaction (RT-PCR) to test for RSV genomic RNA. The experiments showed that juvenile guinea pigs inoculated with human RSV developed statistically significant bronchiolar inflammation by day 6 that resolved by day 14, similar to human acute bronchiolitis. Intrapulmonary RSV was documented by culture, TEM, immunohistochemistry and RT-PCR during acute infection on day 6; in the longer term studies, replicating RSV was cultured up to 14 days post-inoculation, RSV antigens were identified within alveolar macrophages up to day 60 and RSV genomic RNA was identified on day 125. In conclusion, human RSV produced a self-limited acute bronchiolitis in juvenile guinea pigs, with evidence of subsequent persistent infection of alveolar macrophages. Persistent RSV infection of alveolar macrophages may represent a mechanism by which host pulmonary defense mechanisms are compromised against other, non-specific environmental agents implicated in the pathogenesis of asthma.
Additional file 11: of RNA-Seq and iTRAQ reveal multiple pathways involved in storage root formation and development in sweet potato (Ipomoea batatas L.)
Creators: name: Dong, Tingting
name: Zhu, Mingku
name: Yu, Jiawen
name: Han, Rongpeng
name: Tang, Cheng
name: Xu, Tao
name: Liu, Jingran
name: Li, Zongyun
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology

description: Table S6. Candidate genes in storage roots vs fibrous roots of sweet potato in both transcriptome and proteome. (DOCX 19 kb)
Predictive Models of Ionospheric Convection Patterns During Substorms Related to STEVE
Creators: name: Mirkovich, Willem
name: Matsuo, Tomoko
name: Svaldi, Valerie
Publisher: name: Zenodo
Year: 2021
Subjects: Machine Learning
Genetic Algorithm
Hyperparameter tuning
Neural Networks

description: A14G-09: Predictive Models of Ionospheric Convection Patterns During Substorms Related to STEVE

 Presentation for AGU 2021 Fall Meeting Abstract:  The mysterious subauroral phenomenon STEVE (Strong Thermal Emission Velocity Enhancement) was discovered in 2016 by citizen observers, yet its physical mechanism isn’t completely understood. Assimilative Mapping of Geospace Observations (AMGeO) has enabled further analysis of STEVE events by providing global maps of high-latitude electrodynamic features for 32 STEVE and 32 non-STEVE substorm events. Global modes of ionospheric convection variability have been identified using principal component analysis of AMGeO maps for both categories of events. The largest difference manifests as the Principal Component 3 (PC3) that represents a pronounced westward extension of the dawn cell into the pre-midnight sector. Specifically, the amplitude of PC3 coefficients appears to anti-correlate the AL index with some time lag. Using recurrent neural networks, constructed utilizing Long-Short-Term-Memory architecture and hyperparameter optimization techniques, a predictive model of the global convection patterns with respect to the AL index time series is being developed for both STEVE and non-STEVE substorm events. This study will help better understand how global ionospheric electrodynamics evolves through different phases of substorms with or without STEVE.
description: {"references": ["F. Johnson, A. Valderrama, C. Valle, B. Crawford, R. Soto and R. \u00d1anculef, \"Automating Configuration of Convolutional Neural Network Hyperparameters Using Genetic Algorithm,\" in IEEE Access, vol. 8, pp. 156139-156152, 2020, doi: 10.1109/ACCESS.2020.3019245.", "doi:10.5281/zenodo.3564915"]}
MOESM2 of JMJD2C promotes colorectal cancer metastasis via regulating histone methylation of MALAT1 promoter and enhancing Î˛-catenin signaling pathway
Creators: name: Wu, Xinnan
name: Li, Ruixiao
name: Song, Qing
name: Zhang, Chengcheng
name: Jia, Ru
name: Han, Zhifen
name: Zhou, Lihong
name: Sui, Hua
name: Liu, Xuan
name: Zhu, Huirong
name: Yang, Liu
name: Wang, Yan
name: Ji, Qing
name: Li, Qi
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Virology

description: Additional file 2: Figure S2. JMJD2C promoted the proliferation of CRC HCT116 cells, but affected little on the apoptosis of the indicated cells. a MTT assay of HCT116 cells transfected with shRNA/NT, shRNA/JMJD2C, empty vector, or JMJD2C overexpression vector, respectively. b Flow cytometry was performed to measure the apoptosis rates of HCT116 cells transfected with shRNA/NT, shRNA/JMJD2C, empty vector, or JMJD2C overexpression vector, respectively.
Recurrent Few-Shot model for Document Verification
Creators: name: Talarmain, Maxime
name: Boned, Carlos
name: Biswas, Sanket
name: Ramos, Oriol
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: General-purpose ID, or travel, document image- and video-based verification systems have yet to achieve good enough performance to be considered a solved problem. There are several factors that negatively impact their performance, including low-resolution images and videos and a lack of sufficient data to train the models. This task is particularly challenging when dealing with unseen class of ID, or travel, documents. In this paper we address this task by proposing a recurrent-based model able to detect forged documents in a few-shot scenario. The recurrent architecture makes the model robust to document resolution variability. Moreover, the few-shot approach allow the model to perform well even for unseen class of documents. Preliminary results on the SIDTD and Findit datasets show good performance of this model for this task.
Additional file 7: of Sodium new houttuyfonate suppresses metastasis in NSCLC cells through the Linc00668/miR-147a/slug axis
Creators: name: Jiang, Rilei
name: Hu, Cheng
name: Li, Qian
name: Cheng, Ziyu
name: Gu, Ling
name: Li, Hongxiao
name: Guo, Yuanyuan
name: Li, Qirui
name: Lu, Yueyang
name: Li, Ke
name: Chen, Meijuan
name: Zhang, Xu
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Table S3. Dual-luciferase report assay vectors. (PDF 34 kb)
Judgment of feeling states from facial behavior: a bottom-up approach
Creators: name: Snodgrass, Jacalyn D.
Publisher: name: University of British Columbia
Year: 2008

description: A series of studies was conducted to examine the feasiblity of a bottom-up approach to the study of judgment of affective feeling states from facial behavior. Previous work on the judgment of emotion from facial expressions has taken a more top-down approach; observers judged the emotional meaning of a wholistic facial expression. Individual facial movements have sometimes then been identified within that complex expression, but the meaning of those individual movements has not been studied. A bottom-up approach begins by exploring the meaning of individual facial movements instead of complex facial expressions. In this approach the relationship between the emotional meaning of individual facial movements and complex facial expressions can be explored. It is argued that such an approach has the potential to explain judgment of not only a limited set of basic emotional expressions, but the full range of emotionally tinged feelings that individuals both experience in themselves and judge in others. Individual action units, as scored by Ekman and Friesen's (1978) Facial Action Coding System (FACS), and selected combinations of action units were presented to observers in three pairs of studies. Filmstrip sequences were used in the first pair of studies, and still photographs in the other two pairs. In the first study of each pair, observers judged the degree of pleasure and arousal expressed by the face. In the second study of each pair, observers rated how well each of a set of emotion terms described the feeling expressed by the face. Observers were found to reliably attribute meaning to individual action units on both scales. Additionally, pleasure and arousal judgments predicted emotion term ratings. The meaning attributed to combinations of action units was found to be related to the meanings of the individual action units occurring alone. Resultant ratings were shown to be meaningful within a dimensional model of emotion space.
Density functional calculations of nanoscale conductance
Creators: name: Koentopp, Max
name: Chang, Connie
name: Burke, Kieron
name: Car, Roberto
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Density functional calculations for the electronic conductance of single molecules are now common. We examine the methodology from a rigorous point of view, discussing where it can be expected to work, and where it should fail. When molecules are weakly coupled to leads, local and gradient-corrected approximations fail, as the Kohn-Sham levels are misaligned. In the weak bias regime, XC corrections to the current are missed by the standard methodology. For finite bias, a new methodology for performing calculations can be rigorously derived using an extension of time-dependent current density functional theory from the Schroedinger equation to a Master equation.
description: topical review, 28 pages, updated version with some revisions
Feedback and its Feedback Effect on Feedback: Photoionization Suppression and its Impact on Galactic Outflows
Creators: name: Pieri, Matthew M.
name: Martel, Hugo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that radiative feedback due to reionization has a pronounced effect on the extent of mechanical feedback due to galactic outflows. The photoionization of the Intergalactic Medium (IGM) suppresses low-mass galaxy formation by photoheating the gas and limiting atomic line cooling. The number of low-mass galaxies is central for the enrichment of the IGM as these objects have the capacity to enrich a significant fraction (by volume) of the Universe. We use a modified version of our galactic outflow model, combined with a simple criterion for suppression, to investigate the potential impact upon the IGM. We find that this suppression strongly reduces the enrichment of the IGM and is sensitive to the reionization history. We also investigate the contribution of halos of different masses with varying degrees of suppression.
description: 4 pages, 3 figures, class file included, accepted by ApJ Letters, minor changes and expanded Figure 3
Longitudinal Modes of Bunched Beams with Weak Space Charge
Creators: name: Burov, Alexey
Publisher: name: arXiv
Year: 2021
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Longitudinal collective modes of a bunched beam with a repulsive inductive impedance (the space charge below transition or the chamber inductance above it) are analytically described by means of reduction of the linearized Vlasov equation to a parameter-less integral equation. For any multipolarity, the discrete part of the spectrum is found to consist of infinite number of modes with real tunes, which limit point is the incoherent zero-amplitude frequency. In other words, notwithstanding the RF bucket nonlinearity and potential well distortion, the Landau damping is lost. Hence, even a tiny coupled-bunch interaction makes the beam unstable; such growth rates for all the modes are analytically obtained for arbitrary multipolarity. In practice, however, the finite threshold of this loss of Landau damping is set either by the high-frequency impedance roll-off or intrabeam scattering. Above the threshold, growth of the leading collective mode should result in persistent nonlinear oscillations.
description: 28 pages, 11 figures, 50 numbered equations. One subsubsection,"Note on other impedances" is added, Fig. 1 is modified and Fig. 2 is added to show convergence; few references are added
Mass spectra of $NΩ$ dibaryons in the $^{3}S_1$ and $^{5}S_2$ channels
Creators: name: Chen, Xiao-Hui
name: Wang, Qi-Nan
name: Chen, Wei
name: Chen, Hua-Xing
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the mass spectra of the $NΩ$ dibaryons in the $^{3}S_1$ and $^{5}S_2$ channels with $J^{P}=1^{+}$ and $2^{+}$ respectively, by using the method of QCD sum rules. We construct two dibaryon interpolating currents in the molecular picture and calculate their correlation functions and spectral densities up to dimension-16 condensates. Our results indicate that there may exist an $NΩ$ dibaryon bound state in the $^{5}S_2$ channel with a binding energy of about $21\ \mathrm{MeV}$. The masses of the $^{3}S_1$ $NΩ$ dibaryons with $J^{P}=1^{+}$ are predicted to be higher than the $NΩ$ and $ΛΞ$ thresholds, and thus can decay into these final states directly in S-wave. The $NΩ(^{5}S_2)$ dibaryon bound state can decay into the octet-octet final states $ΛΞ$ and $ΣΞ$ in D-wave via the quark rearrangement mechanism. The existence of these $NΩ$ dibaryons may be identified in the relativistic heavy-ion collision experiments in the future.
description: 9 pages, 5 figures. Published in Physical Review D
Dynamics of photoexcited states in one-dimensional dimerized Mott insulators
Creators: name: Maeshima, Nobuya
name: Yonemitsu, Kenji
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Dynamical properties of photoexcited states are theoretically studied in a one-dimensional Mott insulator dimerized by the spin-Peierls instability. Numerical calculations combined with a perturbative analysis have revealed that the lowest photoexcited state without nearest-neighbor interaction corresponds to an interdimer charge transfer excitation that belongs to dispersive excitations. This excited state destabilizes the dimerized phase, leading to a photoinduced inverse spin-Peierls transition. We discuss the purely electronic origin of midgap states that are observed in a latest photoexcitation experiment of an organic spin-Peierls compound, K-TCNQ (potassium-tetracyanoquinodimethane).
description: 13 pages, 13 figures, accepted for publication in PRB
Revision of the Baeoglena species of the West Palaearctic Region (Coleoptera: Staphylinidae: Aleocharinae)
Creators: name: Assing, Volker
Publisher: name: Contributions to Entomology = Beiträge zur Entomologie
Year: 2019

description: The subgenus Baeoglena Thomson, 1867 of the speciose aleocharine genus Oxypoda Mannerheim, 1830 has been subject to considerable taxonomic confusion rendering a reliable identification of material from regions other than Central Europe and the Canary Islands virtually impossible. Based on a revision of abundant material from various major public and private collections, seven species are distributed in the West Palaearctic region exclusive of the Canary Islands. Two new species are described and illustrated: Oxypoda (Baeoglena) rectacia spec. nov. (East Mediterranean, from South Greece to the Middle East) and O. (B.) derecta spec. nov. (West Caucasus, Northeast Anatolia). Diagnoses and illustrations of the genitalia are provided for the remaining five species. The following synonymies are established: Oxypoda nova Bernhauer, 1902 = O. giachinoi Pace, 2001, syn. nov.; O. hispanica Fagel, 1958 and its replacement name O. inexpectata Fagel, 1965 are removed from synonymy with O. praecox Erichson, 1839 and synonymized with O. fusina Mulsant & Rey, 1875. Oxypoda recondita Kraatz, 1856 and O. dalmatina Bernhauer, 1905 are excluded from Baeoglena and moved to the subgenus Bessopora Thomson, 1859. Lectotypes are designated for Oxypoda nova Bernhauer, 1902, O. caucasica Bernhauer, 1902, and O. kuehnelti Scheerpeltz, 1963. An outline of the taxonomic history, a diagnosis of the subgenus, a checklist, and a key to species are provided. A zoogeographic analysis revealed some remarkably discontinuous distributions and parapatric distribution patterns which are plausibly explained only with interspecific competition among Baeoglena species. The distributions of the subgenus as a whole and of the individual species in the West Palaearctic region are mapped. Taxonomic acts Oxypoda rectacia spec. nov. – urn:lsid:zoobank.org:act:8E5A6F28-9AD3-474E-99F8-9CBA0F85C4DC Oxypoda derecta spec. nov. – urn:lsid:zoobank.org:act:4C73E05F-20F7-4697-A4BA-D9E030B28A27
description: Contributions to Entomology = Beiträge zur Entomologie, Vol 69 No 1 (2019)
Orbital Hall effect as an alternative to valley Hall effect in gapped graphene
Creators: name: Bhowal, Sayantika
name: Vignale, Giovanni
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Gapped graphene has been proposed to be a good platform to observe the valley Hall effect, a transport phenomenon involving the flow of electrons that are characterized by different valley indices. In the present work, we show that this phenomenon is better described as an instance of the orbital Hall effect, where the ambiguous "valley" indices are replaced by a physical quantity, the orbital magnetic moment, which can be defined uniformly over the entire Brillouin zone. This description removes the arbitrariness in the choice of arbitrary cut-off for the valley-restricted integrals in the valley Hall conductivity, as the conductivity in the orbital Hall effect is now defined as the Brillouin zone integral of a new quantity, called the orbital Berry curvature. This reformulation in terms of OHE provides the direct explanation to the accumulated opposite orbital moments at the edges of the sample, observed in previous Kerr rotation measurements.
Elicitations: Action Words
Creators: name: Hammond, Jon
name: Hicks, Lucille
name: Grant, Laura
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: Jon Hammnd, in Kawaiisu, eliciting Kawaiisu dictionary entries with example sentences from Lucille Hicks. Words are those expressing actions with someone or directed towards someone. "-we'e" "-roa"
Phase transitions on a class of generalized Vicsek-like models of collective motion
Creators: name: Clusella, Pau
name: Pastor-Satorras, Romualdo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Systems composed of interacting self-propelled particles (SPPs) display different forms of order-disorder phase transitions relevant to collective motion. In this paper we propose a generalization of the Vicsek model characterized by an angular noise term following an arbitrary probability density function, which might depend on the state of the system and thus have a multiplicative character. We show that the well established vectorial Vicsek model can be expressed in this general formalism by deriving the corresponding angular probability density function, as well as we propose two new multiplicative models consisting on a bivariate Gaussian and a wrapped Gaussian distributions. With the proposed formalism, the mean-field system can be solved using the mean resultant length of the angular stochastic term. Accordingly, when the SPPs interact globally, the character of the phase transition depends on the choice of the noise distribution, being first-order with an hybrid scaling for the vectorial and wrapped Gaussian distributions, and second order for the bivariate Gaussian distribution. Numerical simulations reveal that this scenario also holds when the interactions among SPPs are given by a static complex network. On the other hand, using spatial short-range interactions displays, in all the considered instances, a discontinuous transition with a coexistence region, consistent with the original formulation of the Vicsek model.
The Thermal Structure and Composition of Jupiter's Great Red Spot From JWST/MIRI
Creators: name: Harkett, Jake
name: Fletcher, Leigh N.
name: King, Oliver R. T.
name: Roman, Michael T.
name: Melin, Henrik
name: Hammel, Heidi B.
name: Hueso, Ricardo
name: Sánchez-Lavega, Agustín
name: Wong, Michael H.
name: Milam, Stefanie N.
name: Orton, Glenn S.
name: de Kleer, Katherine
name: Irwin, Patrick G. J.
name: de Pater, Imke
name: Fouchet, Thierry
name: Rodríguez-Ovalle, Pablo
name: Fry, Patrick M.
name: Showalter, Mark R.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Jupiter's Great Red Spot (GRS) was mapped by the James Webb Space Telescope (JWST)/Mid-Infrared Instrument (4.9-27.9 micron) in July and August 2022. These observations took place alongside a suite of visual and infrared observations from; Hubble, JWST/NIRCam, Very Large Telescope/VISIR and amateur observers which provided both spatial and temporal context across the jovian disc. The stratospheric temperature structure retrieved using the NEMESIS software revealed a series of hot-spots above the GRS. These could be the consequence of GRS-induced wave activity. In the troposphere, the temperature structure was used to derive the thermal wind structure of the GRS vortex. These winds were only consistent with the independently determined wind field by JWST/NIRCam at 240 mbar if the altitude of the Hubble-derived winds were located around 1,200 mbar, considerably deeper than previously assumed. No enhancement in ammonia was found within the GRS but a link between elevated aerosol and phosphine abundances was observed within this region. North-south asymmetries were observed in the retrieved temperature, ammonia, phosphine and aerosol structure, consistent with the GRS tilting in the north-south direction. Finally, a small storm was captured north-west of the GRS that displayed a considerable excess in retrieved phosphine abundance, suggestive of vigorous convection. Despite this, no ammonia ice was detected in this region. The novelty of JWST required us to develop custom-made software to resolve challenges in calibration of the data. This involved the derivation of the "FLT-5" wavelength calibration solution that has subsequently been integrated into the standard calibration pipeline.
description: 53 pages, 19 figures, 4 tables
Inflationary magnetogenesis: solving the strong coupling and its non-Gaussian signatures
Creators: name: Nandi, Debottam
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The simplest model of primordial magnetogenesis can provide scale-invariant magnetic fields that can explain the present abundances of it in the cosmic scales. Two kinds of solutions of the coupling function can lead to such phenomena and both of them suffer from the problems of either strong-coupling or large backreaction. In this work, we consider the coupling function as a linear combination of both kinds with a model parameter. We find that the parameter needs to be as small as $\sim 10^{-20}$ in order to evade the backreaction problem. On the other hand, requiring that the modes above Mpc scales do not suffer strong coupling, we also obtain a weak constraint of the model parameter to be greater than $10^{-60}$. For the allowed range of the model parameter, we, then, analytically evaluate the cross-correlation functions between the magnetic fields and the curvature perturbation. We find that such a combination preserves the consistency relation. Also, the result leads to enhanced non-Gaussianity in equilateral as well as flattened limits with unique signatures that characterize the novelty of this model.
description: 28 pages, 7 figures, references and equations updated
Development of astronomy research and education in Africa and Ethiopia
Creators: name: Pović, Mirjana
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Africa has amazing potential due to natural (such as dark sky) and human resources for scientific research in astronomy and space science. At the same time, the continent is still facing many difficulties, and its countries are now recognising the importance of astronomy, space science and satellite technologies for improving some of their principal socio-economic challenges. The development of astronomy in Africa (including Ethiopia) has grown significantly over the past few years, and never before it was more possible to use astronomy for education, outreach, and development as it is now. However, much still remains to be done. This paper will summarise the recent developments in astronomy research and education in Africa and Ethiopia and will focus on how working together on the development of science and education can we fight poverty in the long term and increase our possibilities of attaining the United Nations Sustainable Development Goals in future for benefit of all.
description: Proceedings paper of the International Astronomical Union Symposium 367: Education and Heritage in the Era of Big Data in Astronomy
Numerical estimation of reachable and controllability sets for a two-level open quantum system driven by coherent and incoherent controls
Creators: name: Morzhin, Oleg V.
name: Pechen, Alexander N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The article considers a two-level open quantum system, whose evolution is governed by the Gorini--Kossakowski--Lindblad--Sudarshan master equation with Hamiltonian and dissipation superoperator depending, correspondingly, on piecewise constant coherent and incoherent controls with constrained magnitudes. Additional constraints on controls' variations are also considered. The system is analyzed using Bloch parametrization of the system's density matrix. We adapt the section method for obtaining outer parallelepipedal and pointwise estimations of reachable and controllability sets in the Bloch ball via solving a number of problems for optimizing coherent and incoherent controls with respect to some objective criteria. The differential evolution and dual annealing optimization methods are used. The numerical results show how the reachable sets' estimations depend on distances between the system's initial states and the Bloch ball's center point, final times, constraints on controls' magnitudes and variations.
description: International Conference on Quantum Technologies "MIPT (PhysTech) - QUANT 2020" (Moscow, Russia; September 7-11, 2020)
An UAV-based Experimental Setup for Propagation Characterization in Urban Environment
Creators: name: Fuschini, Franco
name: Barbiroli, Marina
name: Vitucci, Enrico M.
name: Semkin, Vasilii
name: Oestges, Claude
name: Strano, Bruno
name: Degli-Esposti, Vittorio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: Robotics (cs.RO)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: A measurement setup made of millimeter-wave and ultra wideband transceivers mounted on both a customized UAV and a ground station for full 3D wireless propagation analysis is described in this work. The developed system represents a flexible solution for the characterization of wireless channels and especially of urban propagation, as the drone might be easily located almost anywhere from ground level to the buildings rooftop and beyond. The double directional properties of the channel can be achieved by rotating directive antennas at the link ends. Other possible applications in urban contexts include above ground level propagation, outdoor-to-indoor penetration, line-of-sight to non-line-of-sight transition, scattering from buildings and air-to-ground channel characterization for UAV-assisted wireless communications.
GNNs Getting ComFy: Community and Feature Similarity Guided Rewiring
Creators: name: Rubio Madrigal, Celia
name: Jamadandi, Adarsh
name: Burkholz, Rebekka
Publisher: name: CISPA
Year: 2025

description: Maximizing the spectral gap through graph rewiring has been proposed to enhance the performance of message-passing graph neural networks (GNNs) by addressing over-squashing. However, as we show, minimizing the spectral gap can also improve generalization. To explain this, we analyze how rewiring can benefit GNNs within the context of stochastic block models. Since spectral gap optimization primarily influences community strength, it improves performance when the community structure aligns with node labels. Building on this insight, we propose three distinct rewiring strategies that explicitly target community structure, node labels, and their alignment: (a) community structure-based rewiring (ComMa), a more computationally efficient alternative to spectral gap optimization that achieves similar goals; (b) feature similarity-based rewiring (FeaSt), which focuses on maximizing global homophily; and (c) a hybrid approach (ComFy), which enhances local feature similarity while preserving community structure to optimize label-community alignment. Extensive experiments confirm the effectiveness of these strategies and support our theoretical insights.
Do people's user types change over time? An exploratory study
Creators: name: Santos, Ana Cláudia Guimarães
name: Oliveira, Wilk
name: Hamari, Juho
name: Isotani, Seiji
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: In recent years, different studies have proposed and validated user models (e.g., Bartle, BrainHex, and Hexad) to represent the different user profiles in games and gamified settings. However, the results of applying these user models in practice (e.g., to personalize gamified systems) are still contradictory. One of the hypotheses for these results is that the user types can change over time (i.e., user types are dynamic). To start to understand whether user types can change over time, we conducted an exploratory study analyzing data from 74 participants to identify if their user type (Achiever, Philanthropist, Socialiser, Free Spirit, Player, and Disruptor) had changed over time (six months). The results indicate that there is a change in the dominant user type of the participants, as well as the average scores in the Hexad sub-scales. These results imply that all the scores should be considered when defining the Hexad's user type and that the user types are dynamic. Our results contribute with practical implications, indicating that the personalization currently made (generally static) may be insufficient to improve the users' experience, requiring user types to be analyzed continuously and personalization to be done dynamically.
description: 5th International GamiFIN Conference 2021 (GamiFIN 2021), April 7-10, 2021, Finland
Kepler's Goat Herd: An Exact Solution to Kepler's Equation for Elliptical Orbits
Creators: name: Philcox, Oliver H. E.
name: Goodman, Jeremy
name: Slepian, Zachary
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A fundamental relation in celestial mechanics is Kepler's equation, linking an orbit's mean anomaly to its eccentric anomaly and eccentricity. Being transcendental, the equation cannot be directly solved for eccentric anomaly by conventional treatments; much work has been devoted to approximate methods. Here, we give an explicit integral solution, utilizing methods recently applied to the "geometric goat problem" and to the dynamics of spherical collapse. The solution is given as a ratio of contour integrals; these can be efficiently computed via numerical integration for arbitrary eccentricities. The method is found to be highly accurate in practice, with our C++ implementation outperforming conventional root-finding and series approaches by a factor greater than two.
description: 7 pages, 4 figures, accepted by MNRAS. Code available at https://github.com/oliverphilcox/Keplers-Goat-Herd