cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
How Galaxies Disguise Their Ages
Creators: name: De Propris, Roberto
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We calculate the contribution to Balmer line indices from far ultraviolet component sources. We find that this is significant, and may lead to identification of spurious age differences of the order of a total span of $\sim 6$ Gyrs or $\sim 15%$ size bursts observed a few Gyrs after star formation stops. We suggest that claims for intermediate age populations in early-type galaxies may need to be reconsidered in the light of this new evidence.
description: Accepted by MNRAS
Towards a Secure Smart Grid Storage Communications Gateway
Creators: name: Marksteiner, Stefan
name: Vallant, Heribert
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: This research in progress paper describes the role of cyber security measures undertaken in an ICT system for integrating electric storage technologies into the grid. To do so, it defines security requirements for a communications gateway and gives detailed information and hands-on configuration advice on node and communication line security, data storage, coping with backend M2M communications protocols and examines privacy issues. The presented research paves the road for developing secure smart energy communications devices that allow enhancing energy efficiency. The described measures are implemented in an actual gateway device within the HORIZON 2020 project STORY, which aims at developing new ways to use storage and demonstrating these on six different demonstration sites.
description: 6 pages, 2 figures
Tomorrow’s Barbie : Collective Imagining Beyond Borders
Creators: name: Ravikumar, Kavitha
name: Bertmark, Anna
Publisher: name: Loughborough University
Year: 2024

description: What happens when Barbie is used as a prompt for collective imagining and collective artworks across two countries? Over the past 6 months, 21 curious participants, delved through magazines, audio-visual imagery and colourful discussions across three workshops. The vision: to reclaim & re-imagine the future, and collectively create artworks that signal the future we want to see.
title: 02_0044
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Association between sperm mitochondrial ND2 gene variants and total fertilization failure
Creators: name: Zhang, Jin-Lan
name: Mao, Gen-Hong
name: Huang, Xiao-Hui
name: Chang, Hong-Yang
name: Zheng, Yi
name: Cao, Xue
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Developmental Biology
subject: Cancer

description: The objective of this study was to explore the association of sperm mitochondrial ND2 (MT-ND2) gene variants with total fertilization failure (TFF). A retrospective comparative study of 246 cases of fresh in vitro fertilization (IVF) cycles or half-intracytoplasmic sperm injection cycles in the Han Chinese population was performed from July 2011 to May 2017. A total of 59 cases undergoing TFF, and 187 control cases with normal fertilization (fertilization rates >50%) were included. The sperm mitochondrial genovariation was determined using nested sequencing. A total of 32 homoplasmic variants and 47 heteroplasmic variants of MT-ND2 gene were observed in this study. There were no significant differences in the frequencies of the 32 homoplasmic variants of MT-ND2 gene between the TFF and control groups. A total of 53 pair-wise comparisons were performed, and the general characteristics of the IVF failure and control subjects were adjusted in logistic models. Data suggested that there were no significant differences in the frequencies of point 4914, 5320, and 5426 heteroplasmic variants of MT-ND2 gene between the TFF and control groups. In addition, no significant difference was observed in the frequency of mtDNA haplogroup D or haplogroup G between the IVF failure group and the normal fertilization group. This study suggests that the MT-ND2 gene variants might not be associated with TFF. Abbreviations: ATP: adenosine triphosphate; dNTP: deoxy-ribonucleoside triphosphate; FADH2: flavin adenine dinucleotide; FDR: false discovery rate; FSH: follicle-stimulating hormone; IVF: in vitro fertilization; LH: luteinizing hormone; MTATP6: mitochondrially encoded ATP synthase 6; MTCYB: mitochondrially encoded cytochrome b; mtDNA: mitochondrial DNA; MT-ND2: mitochondrial ND2; NADH: nicotinamide adenine dinucleotide; ND2: NADH dehydrogenase subunit 2; OXPHOS: oxidative phosphorylation; PCR: single nucleotide polymorphisms; SNPs: single nucleotide polymorphisms; TFF: total fertilization failure
Tachyon Condensation and Black Strings
Creators: name: Horowitz, Gary T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that under certain conditions, closed string tachyon condensation produces a topology changing transition from black strings to Kaluza-Klein "bubbles of nothing." This can occur when the curvature at the horizon is much smaller than the string scale, so the black string is far from the correspondence point when it would make a transition to an excited fundamental string. This provides a dramatic new endpoint to Hawking evaporation. A similar transition occurs for black p-branes, and can be viewed as a nonextremal version of a geometric transition. Applications to AdS black holes and the AdS soliton are also discussed.
description: 23 pages, 1 figure, v2: references added
Testing for Shock-Heated X-ray Gas Around Compact Steep Spectrum Radio Galaxies
Creators: name: O'Dea, C. P.
name: Worrall, D. M.
name: Tremblay, G. R.
name: Clarke, T. E.
name: Rothberg, B.
name: Baum, S. A.
name: Christiansen, K. P.
name: Mullarkey, C. A.
name: Noel-Storr, J.
name: Mittal, R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present Chandra and XMM-Newton X-ray, VLA radio, and optical observations of three candidate Compact Steep Spectrum (CSS) radio galaxies. CSS sources are galactic scale and are presumably driving a shock through the ISM of their host galaxy. B3 1445+410 is a low excitation emission line CSS radio galaxy with possibly a hybrid Fanaroff-Riley FRI/II (or Fat Double) radio morphology. The Chandra observations reveal a point-like source which is well fit with a power law consistent with emission from a Doppler boosted core. 3C 268.3 is a CSS broad line radio galaxy whose Chandra data are consistent spatially with a point source centered on the nucleus and spectrally with a double power-law model. PKS B1017-325 is a low excitation emission line radio galaxy with a bent double radio morphology. While from our new spectroscopic redshift, PKS B1017-325 falls outside the formal definition of a CSS, the XMNM-Newton observations are consistent with ISM emission with either a contribution from hot shocked gas or non-thermal jet emission. We compile selected radio and X-ray properties of the nine bona fide CSS radio galaxies with X-ray detections so far. We find that 2/9 show X-ray spectroscopic evidence for hot shocked gas. We note that the counts in the sources are low and the properties of the 2 sources with evidence for hot shocked gas are typical of the other CSS radio galaxies. We suggest that hot shocked gas may be typical of CSS radio galaxies due to their propagation through their host galaxies.
description: 15 pages, 12 figures. Accepted for publication in the Astrophysical Journal
Spin-fluctuation mechanism of superconductivity
Creators: name: Ramsak, A.
name: Prelovsek, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Normal and superconducting state spectral properties of cuprates are theoretically described within the extended t-J model. The method is based on the equations of motion for projected fermionic operators and the mode-coupling approximation for the self-energy matrix. The dynamical spin susceptibility at various doping is considered as an input, extracted from experiments. The analysis shows that the onset of superconductivity is dominated by the spin-fluctuation contribution. The coupling to spin fluctuations directly involves the next-nearest-neighbor hopping t', hence Tc shows a pronounced dependence on t'. The latter can offer an explanation for the variation of Tc among different families of hole-doped cuprates. A formula for maximum Tc is given and it is shown that optimum doping, where maximum Tc is reached, is with increasing -t' progresively increased.
description: Strongly Correlated Electron Materials: Physics and Nanoengineering Symposium: AM05 Optics & Photonics 2005 (inv.)
Competition Between T=0 and T=1 Pairing in Proton-Rich Nuclei
Creators: name: Satuła, W.
name: Wyss, R.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A cranked mean-field model with two-body T=1 and T=0 pairing interactions is presented. Approximate projection onto good particle-number is enforced via an extended Lipkin-Nogami scheme. Our calculations suggest the simultaneous presence of both T=0 and T=1 pairing modes in N=Z nuclei. The transitions between different pairing phases are discussed as a function of neutron/proton excess, T$_z$, and rotational frequency, $\hbarω$. The additional binding energy due to the T=0 $np$-pairing correlations, is suggested as a possible microscopic explanation of the Wigner energy term in even-even nuclei.
description: 8 RevTeX pages, 3 uuencoded POSTSCRIPT figures included
Additional file 1 of Intraoperative hypotension is associated with increased postoperative complications in patients undergoing surgery for pheochromocytoma-paraganglioma: a retrospective cohort study
Creators: name: Li, Nan
name: Kong, Hao
name: Li, Shuang-Ling
name: Zhu, Sai-Nan
name: Zhang, Zheng
name: Wang, Dong-Xin
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Marine Biology
subject: Science Policy
subject: Mental Health

description: Additional file 1 Supplementary Table 1. Univariate association between baseline/intraoperative variables and postoperative complications.
Proof of a counterexample to the finiteness conjecture in the spirit of the theory of dynamical systems
Creators: name: Kozyakin, Victor
Publisher: name: Weierstrass Institute
Year: 2005
Subjects: subject: Infinite matrix products; Generalized spectral radius; Joint spectral radius; Extremal norms; Irreducibility; Discontinuous circle maps; Rotation number
subject: 15A60
subject: 26E25
subject: 37E10
subject: 37E45
subject: 39A11

description: In 1995 J.C. Lagarias and Y. Wang conjectured that the generalized spectral radius of a finite set of square matrices can be attained on a finite product of matrices. The first counterexample to this Finiteness Conjecture was given in 2002 by T. Bousch and J. Mairesse and their proof was based on measure-theoretical ideas. In 2003 V.D. Blondel, J. Theys and A.A. Vladimirov proposed another proof of a counterexample to the Finiteness Conjecture which extensively exploited combinatorial properties of permutations of products of positive matrices. In this paper, it is proposed one more proof of a counterexample of the Finiteness Conjecture fulfilled in a rather traditional manner of the theory of dynamical systems. It is presented description of the structure of trajectories with the maximal growing rate in terms of extremal norms and associated with them so called extremal trajectories. The construction of the counterexample is based on a detailed analysis of properties of extremal norms of two-dimensional positive matrices in which the technique of the Gram symbols is essentially used. At last, notions and properties of the rotation number for discontinuous orientation preserving circle maps play significant role in the proof.
Conductivity magnetooscillations in 2D electron-impurity system under microwave irradiation: role of magnetoplasmons
Creators: name: Takhtamirov, E. E.
name: Volkov, V. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: It is developed a many-electron approach to explain the recently observed conductivity magnetooscillations in very high mobility 2D electron systems under microwave irradiation. For the first time a theory takes into account the microwave-induced renormalization of the screened impurity potential. As a result this potential has singular, dynamic and non-linear in electric field nature. That changes the picture of scattering of electrons at impurities in a ``clean'' 2D system essentially: for appearence of the rectified dissipative current responsible are excitations of 2D magnetoplasmons rather than one-electron transitions between Landau levels. In a ``dirty'' 2D system the role of electron-electron interaction diminishes, so the collective excitations cease to exist, and our results turn into the well-known ones, which were obtained in the one-electron approach.
description: 5 pages, 1 figure
Protocol to implement the randomised controlled trials of the innovations (D5.20)
Creators: name: Piras, Simone
Publisher: name: Zenodo
Year: 2023

description: This document contains the guidelines to implement randomised controlled trials (RCTs) in three Food Hubs of the FoodLAND project, namely Meknes (Morocco), Kajjansi-Masaka (Uganda), and Mvomero (Tanzania); as well as baseline and final questionnaires. The RCTs are aimed at testing the impact of different incentives on the uptake of FoodLAND innovations by farmers; in turn, the final questionnaires will be used to assess the impact of the innovations on a number of wellbeing indicators using propensity score matching and other counterfactual approaches. The innovations chosen are the mobile application for precision irrigation and protection in Morocco, the integrated aquaculture-crop system with water recirculation in Uganda, and new bean lines in Tanzania. The guidelines and the questionnaires are provided as Annexes. The deliverable describes the goals and timeline of T5.9; the methods (RCTs and matching), their rationale and their advantages and challenges; the randomisation procedures; the innovations; the treatments and their rationale; the wellbeing indicators and why they are relevant with respect to the innovations and Food Hub conditions.
title: ADCO, Cartulaire de Cîteaux pour les domaines de Beaune (XVe siècle), Cart. 177 (11 H 289), 197 folios, f. 0124
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2015
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Cartulaire de Cîteaux pour les domaines de Beaune (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 177 (11 H 289), 197 folios, f. 0124, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les possessions d’Izeure (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 177 (11 H 289), 197 folios, f. 0124, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Braneworld Flux Inflation
Creators: name: Kanno, Sugumi
name: Soda, Jiro
name: Wands, David
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose a geometrical model of brane inflation where inflation is driven by the flux generated by opposing brane charges and terminated by the collision of the branes, with charge annihilation. We assume the collision process is completely inelastic and the kinetic energy is transformed into the thermal energy after collision. Thereafter the two branes coalesce together and behave as a single brane universe with zero effective cosmological constant. In the Einstein frame, the 4-dimensional effective theory changes abruptly at the collision point. Therefore, our inflationary model is necessarily 5-dimensional in nature. As the collision process has no singularity in 5-dimensional gravity, we can follow the evolution of fluctuations during the whole history of the universe. It turns out that the radion field fluctuations have a steeply tilted, red spectrum, while the primordial gravitational waves have a flat spectrum. Instead, primordial density perturbations could be generated by a curvaton mechanism.
description: 11 pages, 6 figures, references added
Rate-independent damage processes in nonlinear elasticity
Creators: name: Mielke, Alexander
name: Roubíček, Tomáš
Publisher: name: Weierstrass Institute
Year: 2005
Subjects: subject: Inelastic damage
subject: large deformations
subject: unilateral contact
subject: variational inequality
subject: energetic formulation.
subject: 35K85
subject: 49S05
subject: 74C15
subject: 74R20

description: Damage of an elastic body undergoing large deformations by a ``hard-device'' loading possibly combined with an impact (modelled by a unilateral frictionless contact) of another, ideally rigid body is formulated as an activated, rate-independent process. The damage is assumed to absorb a specific and prescribed amount of energy. A solution is defined by energetic principles of stability and balance of stored and dissipated energies with the work of external loading, realized here through displacement on a part of the boundary. Rigorous analysis by time discretization is performed.
On the approximation of periodic traveling waves for the nonlinear atomic chain
Creators: name: Dreyer, Wolfgang
name: Herrmann, Michael
Publisher: name: Weierstrass Institute
Year: 2005
Subjects: subject: atomic chain
subject: periodic traveling waves
subject: 34K07
subject: 34K28
subject: 37J45

description: We study a scheme from citeFV99, which allows to approximate periodic traveling waves in the nonlinear atomic chain with nearest neighbour interactions. We prove a compactness result for this scheme, and derive some generalizations. Moreover, we discuss the thermodynamic properties of traveling waves.
Dynamics of a Rydberg hydrogen atom near a topologically insulating surface
Creators: name: Martín-Ruiz, A.
name: Chan-López, E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the classical dynamics of a Rydberg hydrogen atom near the surface of a planar topological insulator. The system is described by a Hamiltonian consisting of the free-hydrogen part and the hydrogen-surface potential. The latter includes the interactions between the electron and both image electric charges and image magnetic monopoles. Owing to the axial symmetry, the $z$ component of angular momentum $l_{z}$ is conserved. Here we consider the $l_{z} = 0$ case. The structure of the phase space is explored extensively by means of numerical techniques and Poincaré surfaces of section for the recently discovered topological insulator TlBiSe$_{2}$. The phase space of the system is separated into regions of vibrational and rotational motion. We show that vibrational-rotational-vibrational type transitions can be tuned with the topological magnetoelectric polarizability.
description: Accepted for publication in Europhysics Letters
Virtual Compton Scattering off the Nucleon in Chiral Perturbation Theory
Creators: name: Hemmert, Thomas R.
name: Holstein, Barry R.
name: Knoechlein, Germar
name: Scherer, Stefan
Publisher: name: arXiv
Year: 1996
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the spin-independent part of the virtual Compton scattering (VCS) amplitude off the nucleon within the framework of chiral perturbation theory. We perform a consistent calculation to third order in external momenta according to Weinberg's power counting. With this calculation we can determine the second- and fourth-order structure-dependent coefficients of the general low-energy expansion of the spin-averaged VCS amplitude based on gauge invariance, crossing symmetry and the discrete symmetries. We discuss the kinematical regime to which our calculation can be applied and compare our expansion with the multipole expansion by Guichon, Liu and Thomas. We establish the connection of our calculation with the generalized polarizabilities of the nucleon where it is possible.
description: 26 pages, 2 Postscript figures, RevTex using epsfig
Multiheterodyne spectroscopy using interband cascade lasers
Creators: name: Sterczewski, Lukasz A.
name: Westberg, Jonas
name: Patrick, Charles Link
name: Kim, Chul Soo
name: Kim, Mijin
name: Canedy, Chadwick L.
name: Bewley, William W.
name: Merritt, Charles D.
name: Vurgaftman, Igor
name: Meyer, Jerry R.
name: Wysocki, Gerard
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Chemical Physics (physics.chem-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: While mid-infrared radiation can be used to identify and quantify numerous chemical species, contemporary broadband mid-IR spectroscopic systems are often hindered by large footprints, moving parts and high power consumption. In this work, we demonstrate multiheterodyne spectroscopy using interband cascade lasers, which combines broadband spectral coverage with high spectral resolution and energy-efficient operation. The lasers generate up to 30 mW of continuous wave optical power while consuming less than 0.5 W of electrical power. A computational phase and timing correction algorithm is used to obtain kHz linewidths of the multiheterodyne beat notes and up to 30 dB improvement in signal-to-noise ratio. The versatility of the multiheterodyne technique is demonstrated by performing both rapidly swept absorption and dispersion spectroscopic assessments of low-pressure ethylene (C$_2$H$_4$) acquired by extracting a single beat note from the multiheterodyne signal, as well as broadband multiheterodyne spectroscopy of methane (CH$_4$) acquired with all available beat notes with microsecond temporal resolution and an instantaneous optical bandwidth of 240 GHz. The technology shows excellent potential for portable and high-resolution solid state spectroscopic chemical sensors operating in the mid-infrared.
Induced gelation in a two-site spatial coagulation model
Creators: name: Siegmund-Schultze, Rainer
name: Wagner, Wolfgang
Publisher: name: Weierstrass Institute
Year: 2005
Subjects: subject: Spatial coagulation model
subject: induced gelation
subject: stochastic particle systems
subject: 60K40

description: A two-site spatial coagulation model is considered. Particles of masses $m$ and $n$ at the same site form a new particle of mass $m+n$ at rate $mn,.$ Independently, particles jump to the other site at a constant rate. The limit (for increasing particle numbers) of this model is expected to be non-deterministic after the gelation time, namely, one or two giant particles randomly jump between the two sites. Moreover, a new effect of induced gelation is observed - the gelation happening at the site with the larger initial number of monomers immediately induces gelation at the other site. Induced gelation is shown to be of logarithmic order. The limiting behaviour of the model is derived rigorously up to the gelation time, while the expected post-gelation behaviour is illustrated by a numerical simulation.
Flavor meson localization in 5d braneworld
Creators: name: Ghoroku, Kazuo
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a brane-world, which contains flavor quarks and mesons, by embedding dimensionally reduced D7-brane in both the supersymmetric and non-supersymmetric 5d background which are obtained as the solutions of type IIB supergravity compactified on Ad$S_5\times S^5$. In the supersymmetric case, the RS brane can be put at any point of the fifth coordinate, but it is pushed to the Ad$S_5$ boundary in the non-supersymmetric case. We study the localization of the flavor mesons, the fluctuation-modes of D7-brane, on the Randall-Sundrum brane in these backgrounds.
description: 15 pages, 2 figures
An automatic deep learning approach for coronary artery calcium segmentation
Creators: name: Santini, G.
name: Della Latta, D.
name: Martini, N.
name: Valvano, G.
name: Gori, A.
name: Ripoli, A.
name: Susini, C. L.
name: Landini, L.
name: Chiappino, D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Coronary artery calcium (CAC) is a significant marker of atherosclerosis and cardiovascular events. In this work we present a system for the automatic quantification of calcium score in ECG-triggered non-contrast enhanced cardiac computed tomography (CT) images. The proposed system uses a supervised deep learning algorithm, i.e. convolutional neural network (CNN) for the segmentation and classification of candidate lesions as coronary or not, previously extracted in the region of the heart using a cardiac atlas. We trained our network with 45 CT volumes; 18 volumes were used to validate the model and 56 to test it. Individual lesions were detected with a sensitivity of 91.24%, a specificity of 95.37% and a positive predicted value (PPV) of 90.5%; comparing calcium score obtained by the system and calcium score manually evaluated by an expert operator, a Pearson coefficient of 0.983 was obtained. A high agreement (Cohen's k = 0.879) between manual and automatic risk prediction was also observed. These results demonstrated that convolutional neural networks can be effectively applied for the automatic segmentation and classification of coronary calcifications.
Uniqueness in determining polygonal sound-hard obstacles with a single incoming wave
Creators: name: Elschner, Johannes
name: Yamamoto, Masahiro
Publisher: name: Weierstrass Institute
Year: 2005
Subjects: subject: inverse scattering problem
subject: uniqueness
subject: sound-hard
subject: polygonal obstacle
subject: 35R30
subject: 35B60

description: We consider the two dimensional inverse scattering problem of determining a sound-hard obstacle by the far field pattern. We establish the uniqueness within the class of polygonal domains by a single incoming plane wave.
Kinetic Monte Carlo simulations of the grain-surface back-diffusion effect
Creators: name: Willis, Eric R.
name: Garrod, Robin T.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Back-diffusion is the phenomenon by which random walkers revisit binding sites on a lattice. This phenomenon must occur on interstellar dust particles, slowing down dust-grain reactions, but it is not accounted for by standard rate-equation models. Microscopic kinetic Monte Carlo models have been used to investigate the effect of back-diffusion on reaction rates on interstellar dust grains. Grain morphology, size, and grain-surface coverage were varied and the effects of these variations on the magnitude of the back-diffusion effect were studied for the simple H+H reaction system. This back-diffusion effect is seen to reduce reaction rates by a maximum factor of ~5 for the canonical grain of 10$^6$ binding sites.The resulting data were fit to logarithmic functions that can be used to reproduce the effects of back-diffusion in rate-equation models.
description: To appear in "Astrochemistry VII - Through the Cosmos from Galaxies to Planets," conference proceedings for IAU Symposium 332 in Puerto Varas, Chile (4 pages, 2 figures)
The relevance of basic psychological needs and subject interest as explanatory variables for student dropout in higher education - a German case study using the example of a cooperative education program
Creators: name: Wild, Steffen
name: Rahn, Sebastian
name: Meyer, Thomas
Publisher: name: TU Dortmund
Year: 2023
Subjects: subject: Self-determination theory
subject: Subject interest
subject: Dropout
subject: Basic psychological needs
subject: Person-object theory of interest
subject: 360
subject: 370
subject: Selbstbestimmung
subject: Bedürfnis
subject: Studienabbruch
subject: Hochschulbildung

description: Student dropout in higher education is a challenge for higher education systems. In recent years, there has been an increasing focus on analyzing motivational aspects in order to counteract dropout. However, the detailed impact mechanisms and processes of motivation on dropout have not been sufficiently researched. For example, there is very little research analyzing the preconditions of motivation and their influence on motivation as well as their eventual influence on dropout. From the background of self-determination theory and the person-object theory of interest, this study analyzes the effects of satisfying the three basic psychological needs on dropout via subject interest. We use data from a cross-sectional design with N = 2662 cooperative students in their first academic year. Our analysis identifies a direct effect of relatedness and subject interest on dropout. Furthermore, indirect effects of satisfying basic psychological needs, specifically, autonomy and relatedness, on dropout via subject interest are noted. We evaluate our results in the context of the current state of research and discuss implications.
description: European journal of psychology of education;
Observation of shell effects in nanowires for the noble metals copper, silver and gold
Creators: name: Mares, A. I.
name: van Ruitenbeek, J. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We extend our previous shell effect observation in gold nanowires at room temperature under ultra high vacuum to the other two noble metals: silver and copper. Similar to gold, silver nanowires present two series of exceptionally stable diameters related to electronic and atomic shell filling. This observation is in concordance to what was previously found for alkali metal nanowires. Copper however presents only electronic shell filling. Remarkably we find that shell structure survives under ambient conditions for gold and silver.
description: 8 pages, 8 figures
The relevance of basic psychological needs and subject interest as explanatory variables for student dropout in higher education - a German case study using the example of a cooperative education program
Creators: name: Wild, Steffen
name: Rahn, Sebastian
name: Meyer, Thomas
Publisher: name: TU Dortmund
Year: 2023
Subjects: subject: self-determination theory
subject: subject interest
subject: dropout
subject: basic psychological needs
subject: person-object theory of interest
subject: 360
subject: 370
subject: Selbstbestimmung
subject: Bedürfnis
subject: Psychologie

description: Student dropout in higher education is a challenge for higher education systems. In recent years, there has been an increasing focus on analyzing motivational aspects in order to counteract dropout. However, the detailed impact mechanisms and processes of motivation on dropout have not been sufficiently researched. For example, there is very little research analyzing the preconditions of motivation and their influence on motivation as well as their eventual influence on dropout. From the background of self-determination theory and the person-object theory of interest, this study analyzes the effects of satisfying the three basic psychological needs on dropout via subject interest. We use data from a cross-sectional design with N = 2662 cooperative students in their first academic year. Our analysis identifies a direct effect of relatedness and subject interest on dropout. Furthermore, indirect effects of satisfying basic psychological needs, specifically, autonomy and relatedness, on dropout via subject interest are noted. We evaluate our results in the context of the current state of research and discuss implications.
description: European journal of psychology of education; 38(4)
Influence of spin-rotation measurements on partial-wave analyses of elastic pion-nucleon scattering
Creators: name: Alekseev, I. G.
name: Kanavets, V. P.
name: Morozov, B. V.
name: Svirida, D. N.
name: Kruglov, S. P.
name: Kulbardis, A. A.
name: Sumachev, V. V.
name: Arndt, R. A.
name: Strakovsky, I. I.
name: Workman, R. L.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Recent measurements of spin-rotation parameters in elastic $π^+ p$ scattering are in marked disagreement with predictions of the Carnegie-Mellon$-$Berkeley and Karlsruhe-Helsinki analyses. Using the method of Barrelet, we show how this discrepancy can be removed. We then show how this Barrelet transformation alters the partial-wave amplitudes. The effect of unitarity and analyticity constraints is also considered.
description: 9 pages, 4 figures. Postscript figures also available from ftp://clsaid.phys.vt.edu/pub/said/pin/barrelet
Existence and asymptotic analysis of a phase field model for supercooling
Creators: name: Klein, Olaf
name: Luterotti, Fabio
name: Rossi, Riccarda
Publisher: name: Weierstrass Institute
Year: 2005
Subjects: subject: Phase field system
subject: supercooling
subject: Young measures
subject: 80A22
subject: 36K60
subject: 35R35

description: We prove an existence result for an initial-boundary value problem which models a perturbation of a phase transition phenomenon with supercooling effects. When the perturbation parameter goes to 0, an asymptotic analysis is performed. It leads to an existence result for a slight modification of the original problem in the framework of Young measures.
Numerical and experimental investigations on non-axisymmetric D-type inlet nozzle for a squirrel-cage fan
Creators: name: Liu, Hui
name: Jiang, Boyan
name: Wang, Jun
name: Yang, Xiaopei
name: Xiao, Qianhao
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Space Science
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: In this study, the unique reverse-flow around the inlet nozzle of a squirrel-cage fan was numerically studied by computational fluid dynamics (CFD), and a non-axisymmetric D-type inlet nozzle was proposed to inhibit it. It is shown that serious back flow develops at the volute tongue when the fan operates at a low flow coefficient that is lower than the best efficiency point. The airflow passing the blade passages in reverse further crosses the impeller, mixing the clearance leakage airflow, and finally blows into the intake chamber near the circumferential position of 150∘. By installing the inlet nozzle along this direction, D-type inlet nozzle schemes with different blockage extent were calculated by CFD. The scheme with a cut distance of 70% of its exit-section radius was chosen as the best design by comprehensively comparing the back flow ratio and fan performance of different working conditions. CFD results illustrated that reverse blowing at the fan entrance was significantly constrained by this D-type inlet nozzle, and the vortex in the inlet chamber correspondingly disappeared. Experimental data illustrated that the new nozzle increased the fan pressure rise under low-flow conditions by about 6% and barely reduced performance at other working points.
Spectral analysis of Sinai's walk for small eigenvalues
Creators: name: Bovier, Anton
name: Faggionato, Alessandra
Publisher: name: Weierstrass Institute
Year: 2005
Subjects: subject: disordered systems
subject: random dynamics
subject: trap models
subject: ageing
subject: spectral properties
subject: 60K37
subject: 82B41
subject: 82B44

description: Sinai's walk can be thought of as a random walk on $ZZ$ with random potential $V$, with $V$ weakly converging under diffusive rescaling to a two-sided Brownian motion. We consider here the generator $LL _N$ of Sinai's walk on $[-N,N]cap ZZ$ with Dirichlet conditions on $-N,N$. By means of potential theory, for each $h>0$ we show the relation between the spectral properties of $LL_N$ for eigenvalues of order $oleft(expleft(-h sqrtNright)right)$ and the distribution of the $h$-extrema of the rescaled potential $V_N(x)equiv V(Nx)/sqrtN$ defined on $[-1,1]$. Information about the $h$-extrema of $V_N$ is derived from a result of Neveu and Pitman concerning the statistics of $h$-extrema of Brownian motion. As first application of our results, we give a proof of a refined version of Sinai's localization theorem.
Observation of Bulk Fermi Arc and Polarization Half Charge from Paired Exceptional Points
Creators: name: Zhou, Hengyun
name: Peng, Chao
name: Yoon, Yoseob
name: Hsu, Chia Wei
name: Nelson, Keith A.
name: Fu, Liang
name: Joannopoulos, John D.
name: Soljacic, Marin
name: Zhen, Bo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The ideas of topology have found tremendous success in Hermitian physical systems, but even richer properties exist in the more general non-Hermitian framework. Here, we theoretically propose and experimentally demonstrate a new topologically-protected bulk Fermi arc which---unlike the well-known surface Fermi arcs arising from Weyl points in Hermitian systems---develops from non-Hermitian radiative losses in photonic crystal slabs. Moreover, we discover half-integer topological charges in the polarization of far-field radiation around the Fermi arc. We show that both phenomena are direct consequences of the non-Hermitian topological properties of exceptional points, where resonances coincide in their frequencies and linewidths. Our work connects the fields of topological photonics, non-Hermitian physics and singular optics, and paves the way for future exploration of non-Hermitian topological systems.
description: 7 pages, 4 figures
title: Perturbation Analysis of Calcium, Alkalinity and Secretion during Growth of Lily Pollen Tubes
Creators: name: Winship, Lawrence J.
name: Rounds, Caleb
name: Hepler, Peter K.
Publisher: name: University of Massachusetts Amherst
Year: 2016
Subjects: subject: calcium
subject: protons
subject: exocytosis
subject: tip growth
subject: Lilium
subject: pollen
subject: respiration
subject: perturbation analysis

description: Pollen tubes grow by spatially and temporally regulated expansion of new material secreted into the cell wall at the tip of the tube. A complex web of interactions among cellular components, ions and small molecule provides dynamic control of localized expansion and secretion. Cross-correlation studies on oscillating lily (Lilium formosanum Wallace) pollen tubes showed that an increase in intracellular calcium follows an increase in growth, whereas the increase in the alkaline band and in secretion both anticipate the increase in growth rate. Calcium, as a follower, is unlikely to be a stimulator of growth, whereas the alkaline band, as a leader, may be an activator. To gain further insight herein we reversibly inhibited growth with potassium cyanide (KCN) and followed the re-establishment of calcium, pH and secretion patterns as growth resumed. While KCN markedly slows growth and causes the associated gradients of calcium and pH to sharply decline, its removal allows growth and vital processes to fully recover. The calcium gradient reappears before growth restarts; however, it is preceded by both the alkaline band and secretion, in which the alkaline band is slightly advanced over secretion. Thus the pH gradient, rather than the tip-focused calcium gradient, may regulate pollen tube growth.
Publisher Support for Self-Archiving: Laudatory or Predatory?
Creators: name: Troll, Denise
Publisher: name: Carnegie Mellon University
Year: 2013
Subjects: subject: Library and Information Studies
subject: FOS: Media and communications

description: Most publishers with self-archiving policies in the SHERPA RoMEO database allow authors to deposit their articles in a repository or post them to a website – supporting the green route to open access. Nevertheless, the Association of American Publishers (AAP) enthusiastically endorsed legislation proposed and defeated twice in the United States to prohibit federal agencies from mandating repository deposits of articles reporting on research they funded. The AAP also endorsed the Finch Report issued in the United Kingdom. The Report denigrated repository deposits and elevated open access publishing – the gold route to open access – as the preferred path to expand public access. Given that the green route is more affordable than the gold route (Houghton et al 2009), that the green route exceeds the gold route in growth rate and proportion of articles available open access (Gargouri et al 2012), and that mandates increase repository deposits (Van Noorden 2013, Poynder May 2012), these are puzzling tactics for publishers professing to support self-archiving. Despite conspicuous progress in providing open access to scholarly articles, there is a steady, unsettling undercurrent stirred by traditional publishers that could undermine the green route to open access. This article examines data and discourse to better understand publisher perspectives on self-archiving and, based on this understanding, urges action from open access advocates.
Pulse interaction via gain and loss dynamics in passive mode-locking
Creators: name: Nizette, Michel
name: Rachinskii, Dmitrii I.
name: Vladimirov, Andrei
name: Wolfrum, Matthias
Publisher: name: Weierstrass Institute
Year: 2005
Subjects: subject: mode-locking
subject: bifurcations
subject: pulse interaction
subject: Q-switching
subject: 78A60
subject: 34C23
subject: 42.60.Fc
subject: 42.55.Px
subject: 42.60.Mi
subject: 42.65.Pc
subject: 42.60.Gd

description: We study theoretically the effects of pulse interactions mediated by the gain and absorber dynamics in a passively mode-locked laser containing a slow saturable absorber, and operating in a regime with several pulses coexisting in the cavity.
Some aspects of jump-defects in the quantum sine-Gordon model
Creators: name: Bowcock, P.
name: Corrigan, E.
name: Zambon, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The classical sine-Gordon model permits integrable discontinuities, or jump-defects, where the conditions relating the fields on either side of a defect are Backlund transformations frozen at the defect location. The purpose of this article is to explore the extent to which this idea may be extended to the quantum sine-Gordon model and how the striking features of the classical model may translate to the quantum version. Assuming a positive defect parameter there are two types of defect. One type, carrying even charge, is stable, but the other type, carrying odd charge, is unstable and may be considered as a resonant bound state of a soliton and a stable defect. The scattering of solitons with defects is considered in detail, as is the scattering of breathers, and in all cases the jump-defect is purely transmitting. One surprising discovery concerns the lightest breather. Its transmission factor is independent of the bulk coupling - a property susceptible to a perturbative check, but not shared with any of the other breathers. It is argued that classical jump-defects can move and some comments are made concerning their quantum scattering matrix.
description: 33 pages; a few typos have been corrected and two references added
Phoricheta tricincta Rondani 1861
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tachinidae
Phoricheta
Phoricheta tricincta

description: Phoricheta tricincta Rondani, 1861
ORIGINAL DESCRIPTION: 1861e: 99 (key), 103 (description).
 TYPE LOCALITY: “ in collibus agri parmensis [Parmese hills (Italy)]”.
 TYPE MATERIAL: 1 ♀, syntype (MZUF: Box 16): Phoricheta Rnd. / tricincta Rnd. / 843.
 CURRENT STATUS: junior synonym of Ramonda spathulata (Fallén, 1820) (Herting & Dely-Draskovits 1993: 379).
 REMARKS: Rondani (1861e: 103) described Phoricheta tricincta without specifying the number, the sex or the length of the specimens. We found one syntype in this study.
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 344, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621