cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Super-Orbital Variability in Hard X-rays
Creators: name: Farrell, S. A.
name: Barret, D.
name: Skinner, G. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a study with the \emph{Swift} Burst Alert Telescope in the 14 -- 195 keV range of the long-term variability of 5 low mass X-ray binaries with reported or suspected super-orbital periods -- 4U 1636-536, 4U 1820-303, 4U 1916-053, Cyg X-2 and Sco X-1. No significant persistent periodic modulation was detected around the previously reported periods in the 4U 1916-053, Cyg X-2 or Sco X-1 light curves. The $\sim$170 d period of 4U 1820-303 was detected up to 24 keV, consistent with variable accretion due to the previously proposed triple system model. The $\sim$46 d period in 4U 1636-536 was detected up to 100 keV, with the modulation in the low and high energy bands found to be phase shifted by $\sim180^\circ$ with respect to each other. This phase shift, when taken together with the near-coincident onset of the $\sim$46 d modulation and the low/hard X-ray state, leads us to speculate that the modulation could herald transient jet formation.
description: 19 pages, 16 figures, 3 tables, accepted for publication in MNRAS
Deep V and I CCD photometry of young star cluster NGC 1893 with the 3.6m DOT
Creators: name: Panwar, Neelam
name: Kumar, Amit
name: Pandey, S. B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Young star clusters consisting of massive stars are the ideal sites to study the star formation processes and influence of massive stars on the subsequent star formation. NGC 1893 is a young star cluster associated with the HII region Sh2-236. It contains about five `O'-type stars and several early `B'-type stars. It is located at a distance of $\sim$3.25 kpc and has a reddening, E(B-V)$\sim$0.4 mag. To characterize the young low-mass stellar population in the central portion of the cluster, we carried out deep VI band observations of the region using the 4K$\times$4K CCD IMAGER mounted on the 3.6-m DOT. Our analysis shows that the present data are deep enough to detect stars below $\sim$24 mag. We found optical counterparts of $\sim$220 candidate members, including young stars and unclassified cluster members from Caramazza et al. (2008). We estimated the membership probabilities of the Gaia sources (mostly bright stars with G$
description: Accepted for publication in Special Issue of Journal of Astrophysics & Astronomy, 2022, Astrophysical jets and observational facilities: National perspective, 05 - 09 April 2021, ARIES Nainital
Ultra low frequency noise laser by locking to an optical fiber delay line
Creators: name: Kéfélian, Fabien
name: Jiang, Haifeng
name: Lemonde, Pierre
name: Santarelli, Giorgio
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report the frequency stabilization of an erbium-doped fiber distributed-feedback laser using an all-fiber based Michelson interferometer of large arm imbalance. The interferometer uses a 1 km SMF-28 optical fiber spool and an acousto optic modulator allowing heterodyne detection. The frequency noise power spectral density is reduced by more than 40 dB for Fourier frequencies ranging from 1 Hz to 10 kHz, corresponding to a level well below 1 Hz^2/Hz over the whole range. It reaches 10^{-2} Hz^2/Hz at 1 kHz. Between 40 Hz and 30 kHz, the frequency noise is shown to be comparable to the one obtained by Pound-Drever-Hall locking to a high finesse Fabry-Perot cavity. Locking to a fiber delay line could consequently represent a reliable, simple and compact alternative to cavity stabilization for short term linewidth reduction.
title: Diagnóstico ecográfico de colecistitis aguda. ¿Es tan fácil como parece?
Creators: name: Nates Uribe, Naroa
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Thorax
subject: Musculoskeletal bone
subject: Abdomen

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
La ecografía es la prueba de elección en el diagnóstico de la colecistitis aguda. En la literatura radiológica está considerada como una prueba de alta capacidad diagnóstica,
sin embargo,
en la práctica diaria,
apreciamos cierto número de...
Accurate evaluation of magnetic coupling between atoms with numerous open-shells : an ab-initio method
Creators: name: Gellé, Alain
name: Varignon, Julien
name: Lepetit, Marie-Bernadette
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose a new ab initio method designed for the accurate calculation of effective exchange integrals between atoms with numerous open-shells. This method applies to ferromagnetic as well as antiferromagnetic exchange, direct or ligand-mediated exchange. Test calculations on high spin transition metal oxides such as KNiF3, Ba2CoS3 or YMnO3 exhibit a very good accuracy compared either to the best ab initio calculations --when those are feasible-- and with experimental evaluations.
On epimorphisms and monomorphisms of Hopf algebras
Creators: name: Chirvasitu, Alexandru
Publisher: name: arXiv
Year: 2009
Subjects: subject: Rings and Algebras (math.RA)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 16W30, 18A20, 18A30, 18A40

description: We provide examples of non-surjective epimorphisms $H\to K$ in the category of Hopf algebras over a field, even with the additional requirement that $K$ have bijective antipode, by showing that the universal map from a Hopf algebra to its enveloping Hopf algebra with bijective antipode is an epimorphism in $\halg$, although it is known that it need not be surjective. Dual results are obtained for the problem of whether monomorphisms in the category of Hopf algebras are necessarily injective. We also notice that these are automatically examples of non-faithfully flat and respectively non-faithfully coflat maps of Hopf algebras.
description: 17 pages; changed the abstract, revised introduction, shortened some proofs; to appear in J. Algebra
Systematic Study of Two-Pion Production in NN Collisions -- from Single-Baryon to Di-Baryon Excitations
Creators: name: Skorodko, T.
name: Bashkanov, M.
name: Clement, H.
name: Doroshkevich, E.
name: Khakimova, O.
name: Kren, F.
name: Pricking, A.
name: Wagner, G. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The two-pion production in nucleon-nucleon collisions has been studied by exclusive and kinematically complete experiments from threshold up to $T_p$ = 1.36 GeV at CELSIUS-WASA. At near-threshold energies the total and differential distributions for the $π^+π^-$ and $π^0π^0$ channels are dominated by Roper excitation and its decay into $Nσ$ and $Δπ$ channels. At beam energies $T_p >$ 1.1 GeV the $ΔΔ$ excitation governs the two-pion production process. In the $π^+π^+$ channel evidence is found for the excitation of a higher-lying I=3/2 resonance, favorably the $Δ(1600)$. The isovector fusion processes leading to the deuteron and to quasi-stable $^2$He, respectively, %with the production of an isovector pion-pair exhibit no or only a modest ABC-effect, {\it i.e.} low-mass enhancement in the $ππ$-invariant mass spectrum, and can be described by conventional $t$-channel $ΔΔ$ excitation. On the other hand, the isoscalar fusion process to the deuteron %with the production of an isoscalar pion-pair exhibits a dramatic ABC-effect correlated with a narrow resonance-like energy dependence in the total cross section with a width of only 50 MeV and situated at a mass 90 MeV below the $ΔΔ$ mass.
description: Proceedings HADRON09
Noise-cancellation algorithm for simulations of Brownian particles
Creators: name: Rusch, Regina
name: Franosch, Thomas
Publisher: name: Universität Innsbruck
Year: 2024

description: We investigate the usage of a recently introduced noise-cancellation algorithm for Brownian simulations to enhance the precision of measuring transport properties such as the mean-square displacement or the velocityautocorrelation function. The algorithm is based on explicitly storing the pseudorandom numbers used to create the randomized displacements in computer simulations and subtracting them from the simulated trajectories. The resulting correlation function of the reduced motion is connected to the target correlation function up to a crosscorrelation term. Using analytical theory and computer simulations, we demonstrate that the cross-correlation term can be neglected in all three systems studied in this paper. We further expand the algorithm to Monte Carlo simulations and analyze the performance of the algorithm and rationalize that it works particularly well for unbounded, weakly interacting systems in which the precision of the mean-square displacement can be improved by orders of magnitude.
Primordial Non-Gaussianity from LAMOST Surveys
Creators: name: Gong, Yan
name: Wang, Xin
name: Zheng, Zheng
name: Chen, Xuelei
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The primordial non-Gaussianity (PNG) in matter density perturbation is a very powerful probe of the physics of the very early Universe. The local PNG can induce a distinct scale-dependent bias on the large scale structure distribution of galaxies and quasars, which could be used for constraining it. We study the detection limits on PNG from the surveys of the LAMOST telescope. The cases of the main galaxy survey, the luminous red galaxy (LRG) survey, and the quasar survey of different magnitude limits are considered. We find that the MAIN1 sample (i.e. the main galaxy survey with one magnitude deeper than the SDSS main galaxy survey, or r<18.8) could only provide very weak constraint on PNG. For the MAIN2 sample (r<19.8) and the LRG survey, the 2σ(95.5%) limit on the PNG parameter f_{NL} are |f_{NL}|<145 and |f_{NL}|<114 respectively, comparable to the current limit from cosmic microwave background (CMB) data. The quasar survey could provide much more stringent constraint, and we find that the 2σlimit for |f_{NL}| is between 50 and 103, depending on the magnitude limit of the survey. With Planck-like priors on cosmological parameters, the quasar survey with g<21.65 would improve the constraints to |f_{NL}|<43 (2σ). We also discuss the possibility of further tightening the constraint by using the relative bias method proposed by Seljak(2008).
description: 8 pages, 2 figures, RAA accepted
VLBA Observations of HI in the Archetype Compact Symmetric Object B2352+495
Creators: name: Araya, E. D.
name: Rodriguez, C.
name: Pihlstrom, Y.
name: Taylor, G. B.
name: Tremblay, S.
name: Vermeulen, R. C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: B2352+495 is a prototypical example of a Compact Symmetric Object (CSO). It has a double radio lobe symmetrically located with respect to a central flat spectrum radio core (the location of the AGN) and has a physical extent of less than 200 pc. In this work we report VLBA observation of 21 cm HI absorption toward B2352+495 to investigate the properties of this remarkable radio source, in particular, to explore whether the radio emission can be confined by circumnuclear material (frustration scenario) or whether the source is likely to be young. We confirmed the two HI absorption features previously detected toward B2352+495 - a broad line nearly centered at the systemic velocity of the galaxy and a narrow redshifted component. The atomic gas from the broad absorption component is likely associated with circumnuclear material, consistent with the current paradigm of clumpy HI distribution in toroidal structures around supermassive black holes.
description: 25 pages, 4 figures. Accepted for publication in the Astronomical Journal
Neural Reactivity to Affective Stimuli and Internalizing Symptom Dimensions in a Transdiagnostic Sample
Creators: name: Granros, Maria P
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: Background: Internalizing psychopathologies (IPs) are highly comorbid and share similar attributes, such as abnormal affective reactivity. The Late Positive Potential (LPP), an electroencephalogram event-related potential (ERP) component, has been utilized to index neural affective reactivity in IPs. Studies often examine aberrations in the LPP specific to individual IPs, ignoring overlap between IPs. Few studies have examined how IP symptoms associate with the LPP in individuals with comorbid diagnoses. The current study examined how IP symptom dimensions relate to neural affective reactivity in a highly comorbid transdiagnostic patient sample. Method: Participants (N = 99) completed a battery of IP symptom measures in addition to a target categorization task while viewing pleasant, unpleasant, and neutral images during electroencephalography recording. To calculate the LPP, ERPs to each image valence were averaged from 400 to 1,000 ms following picture onset at pooled parietal and occipital electrodes. A principal components analysis performed on the IP symptom measures resulted in two factors: affective distress/misery and fear-based anxiety. Results: Fear-based anxiety was associated with enhanced LPP reactivity specific to unpleasant images while distress/misery indexed attenuated average LPP reactivity across images. Conclusions: Results revealed a dissociable pattern of neural reactivity between IP symptom factors in a transdiagnostic sample. Enhanced reactivity to negative images was specific to greater fear-based anxiety symptoms while distress/misery symptoms were associated with valence-independent blunted affective reactivity. Neural affective reactivity may serve as an objective, biological marker to elucidate the nature of psychological concerns in individuals with comorbid IPs.
Towards rationalizing photoswitchable behavior of Cu$^{\mathrm{II}}_{2}$Mo$^{\mathrm{IV}}$ cyanido-bridged molecule
Creators: name: Pełka, Robert
name: Stefańczyk, Olaf
name: Majcher-Fitas, Anna Małgorzata
name: Mathonière, Corine
name: Sieklucka, Barbara
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: [Cu$^{\mathrm{II}}$(enpnen)]$_{2}$[Mo$^{\mathrm{IV}}$(CN)$_{8}$]$\cdot$7H$_{2}$O (enpnen = N,N$^\prime$-bis(2-aminoethyl)-1,3-propane-diamine) molecular cluster compound was subject to a series of irradiations with the light of 405 nm. On irradiation isothermal magnetization at 1.8 and 5 K in the field range 0-70 kOe as well as magnetic susceptibility in the temperature range of 2-300 K were subsequently detected. Both types of magnetic signals were next analyzed assuming that the irradiation triggers two independent processes: the metal to metal charge transfer (MMCT) leading to a state with the Arrhenius-type relaxation and the spin crossover (SC) transition ending in a state whose relaxation displays a threshold behavior. The first mechanism leads to an electron from the spinless Mo(IV) configuration being transferred to one of the Cu(II) ions transforming the trimer into the state Cu(II)-N-C-Mo(V)-C-N-Cu(I), with spin 1/2 on the Mo(V) ion and the spinless Cu(I) ion. The other mechanism gives rise to an excited paramagnetic Mo(IV)$^{*}$ linked to two paramagnetic Cu(II) centers with a possible superexchange interaction. The spin of the excited Mo(IV)$^{*}$ species is equal to 1 and associated to a disruption of the 5s-electronic pair. A reasonable result of simultaneous fitting the full series of susceptibility and magnetization data to the model taking into account both mechanisms corroborates their presence.
description: 16 pages, 4 figures, Physics of Magnetism PM'21, Pozna\'{n}, Poland
title: Epilepsia del lóbulo temporal: ¿Qué nos podemos encontrar en los estudios de RM?
Creators: name: Salvador Álvarez, Elena
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Neuroradiology brain
subject: MR

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
En el estudio de pacientes con epilepsia temporal,
la prueba de imagen de elección es la resonancia magnética (RM) ya que permite detectar lesiones estructurales,
que junto con los datos clínicos y del EEG,
ayuda a la toma de decisiones...
Microfluidic Biosensors and Biofuel Cells Integrated with Low-dimensional Carbon Nanomaterials
Creators: name: Ahmadianyazdi, Alireza
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: This thesis presents development of the next generation carbon-based biofuel cells, and biosensors that are the two important members of the large class of bio-microsystems. In our efforts, we took advantage of exotic properties of graphene and carbon nanotubes (CNTs), and combined them with emerging microfluidic tools to fabricate, analyze, and inform theories that explain the fundamental principles underlying our experimental observations. More specifically, we demonstrated studies on (i) converting enzymatic fuel cells (EFCs) into novel enzymatic biobatteries, (ii) the use of emerging graphene derivatives in enhancing the performance metrics of EFCs, and the next-generation graphene-based phononic sensors for (iii) remote flow rate measurements within microfluidics devices, and (iv) remote detection of glucose with/without the aid of enzymes.
title: Encefalomielitis aguda diseminada: Claves básicas para su interpretación diagnóstica.
Creators: name: Sánchez Carvajal, Javier, Javier
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: MR
subject: Paediatric
subject: Neuroradiology brain

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
El presente trabajo tiene por objeto hacer una actualización de los hallazgos de neuroimagen descritos en la literatura y que han sido observados en los pacientes diagnosticados de encefalomielitis aguda diseminada (EMDA) así como realizar un...
Scattering in one-dimensional heterostructures described by the Dirac equation
Creators: name: Peres, N. M. R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider electronic transport accross one-dimensional heterostructures described by the Dirac equation. We discuss the cases where both the velocity and the mass are position dependent. We show how to generalize the Dirac Hamiltonian in order to obtain a Hermitian problem for spatial dependent velocity. We solve exactly the case where the position dependence of both velocity and mass is linear. In the case of velocity profiles, it is shown that there is no backscattering of Dirac electrons. In the case of the mass profile backscattering exists. In this case, it is shown that the linear mass profile induces less backscattering than the abrupt step-like profile. Our results are a first step to the study of similar problems in graphene.
Bio-informatics: a working concept. A translation of "Bio-informatica: een werkconcept" by B. Hesper and P. Hogeweg
Creators: name: Hesper, Ben
name: Hogeweg, Paulien
Publisher: name: arXiv
Year: 2021
Subjects: subject: Other Quantitative Biology (q-bio.OT)
subject: FOS: Biological sciences

description: A translation of the Dutch article from 1970 in which the term "bioinformatics" was first introduced by Ben Hesper and Paulien Hogeweg.
description: Translation by Jeroen Meijer
Η ένταξη της Τουρκίας στην Ευρωπαϊκή Ένωση: Κυβερνητικές πολιτικές και όψεις από το 1950 μέχρι σήμερα
Creators: name: Σέμκου, Βασιλική Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Τουρκία
Ευρωπαϊκή Ένωση
Ένταξη
Turkey
European Union
Integration

description: Η σύνδεση της Τουρκίας με τις μεγαλύτερες συνθήκες της σύγχρονης ιστορίας και παράλληλα η επίδραση, την οποία είχε στη χάραξη διεθνών πολιτικών και εξωτερικών κυριαρχικών ζητημάτων των κρατών, αναδεικνύονται σήμερα μέσα από το ζήτημα της ένταξής της στην Ευρωπαϊκή Ένωση. Η δράση της Τουρκίας από την πρώτη επίσημη σύναψη σχέσεων με την ΕΕ μέχρι και σήμερα και το δυσεπίλυτο του ζητήματος, ανέδειξαν την ανάγκη ουσιαστικής διερεύνησης των συνθηκών που επικρατούν, καθώς και την ανάγκη μιας ουσιαστικής λύσης, για ένα ίσως από τα πιο σημαντικά ζητήματα της σύγχρονης παγκόσμιας πραγματικότητας, όπως τη γνωρίζουμε σήμερα. Στόχος της παρούσας διπλωματικής εργασίας αποτελεί η ανάδειξη των αιτιών, της διαρκούς αναβολής της προσχώρησης της Τουρκίας στην ΕΕ, με γνώμονα την ανάγκη παροχής απάντησης στο καίριο ερώτημα «Ποιος πραγματικά ευθύνεται για την κατάσταση της τουρκικής υποψηφιότητας;». Η εκπόνηση της εργασίας πραγματοποιήθηκε με την μελέτη δευτερογενών πηγών και την ανάλυση του ερωτήματος, μέσω τριών βασικών αξόνων σκέψης και συγγραφής, με στόχο την εύρεση ουσιαστικής απάντησης. Η προσπάθεια, που πραγματοποιήθηκε, στηρίχθηκε στη μελέτη της ιστορικής εξέλιξης και των πολιτικών, τις οποίες εφάρμοσε η ΕΕ από την ανακοίνωση της υποψηφιότητας της Τουρκίας το 1963 μέχρι και τις πιο πρόσφατες εξελίξεις, την εκτενή ανάλυση και παράθεση των κυβερνήσεων της Τουρκίας και των πολιτικών αποφάσεων, τις οποίες λάμβαναν κατά την ίδια χρονική περίοδο και τέλος την παρουσίαση της διάστασης απόψεων, οι οποίες εκφράστηκαν από τα ευρωπαϊκά κράτη, τα οποία συνδέθηκαν με το καθεστώς υποψηφιότητας της χώρας, καθώς και από την ίδια την Τουρκία
description: The debate over Turkey’s membership in the European Union has developed into a crucial issue in European politics. The intractability of the problem since Turkey first established formal relations with the EU merits a thorough investigation of the current situation and its background. This MA thesis seeks to cast light on the factors that have contributed to Turkey’s continued delay in joining the EU by addressing the fundamental question: “Who is actually responsible for the current state of Turkey’s candidacy?”. The analysis presented in the thesis is based on secondary sources. The research question is approached through three main axes. The thesis studies the historical development and the policies which the EU implemented from the announcement of Turkey’s candidacy in 1963 up until today, it includes extensive analysis and quotations of the governments of Turkey’s political decisions during the period in question, and finally, it presents the diversity of opinions expressed by the European states and by Turkey itself linked to the country’s candidacy status
Additional file 6: of Aids to management of headache disorders in primary care (2nd edition)
Creators: name: T. Steiner
name: R. Jensen
name: Z. Katsarava
name: M. Linde
name: E. MacGregor
name: V. Osipova
name: K. Paemeleire
name: J. Olesen
name: M. Peters
name: P. Martelletti
Publisher: name: Figshare
Year: 2019
Subjects: subject: Molecular Biology
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy

description: Guides to management: Management of migraine. (PDF 376Â kb)
High-Resolution X-ray Spectroscopy of SNR 1987A: Chandra LETG and HETG Observations in 2007
Creators: name: Zhekov, Svetozar A.
name: McCray, Richard
name: Dewey, Daniel
name: Canizares, Claude R.
name: Borkowski, Kazimierz J.
name: Burrows, David N.
name: Park, Sangwook
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an extended analysis of the deep Chandra LETG and HETG observations of the supernova remnant 1987A (SNR 1987A) carried out in 2007. The global fits to the grating spectra show that the temperature of the X-ray emitting plasma in the slower shocks in this system has remained stable for the last three years, while that in the faster shocks has decreased. This temperature evolution is confirmed by the first light curves of strong X-ray emission lines and their ratios. On the other hand, bulk gas velocities inferred from the X-ray line profiles are too low to account for the post-shock plasma temperatures inferred from spectral fits. This suggests that the X-ray emission comes from gas that has been shocked twice, first by the blast wave and again by shocks reflected from the inner ring of SNR 1987A. A new model that takes these considerations into account gives support to this physical picture.
description: 36 pages, 10 figures, Accepted for publication in ApJ
Inversion positivity and the sharp Hardy-Littlewood-Sobolev inequality
Creators: name: Frank, Rupert L.
name: Lieb, Elliott H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Functional Analysis (math.FA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We give a new proof of certain cases of the sharp HLS inequality. Instead of symmetric decreasing rearrangement it uses the reflection positivity of inversions in spheres. In doing this we extend a characterization of the minimizing functions due to Li and Zhu.
description: 15 pages; references added and minor changes
Calculation of nucleon strange quark content with dynamical overlap quarks
Creators: name: JLQCD Collaboration
name: Takeda, K.
name: Aoki, S.
name: Hashimoto, S.
name: Kaneko, T.
name: Onogi, T.
name: Yamada, N.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We calculate the nucleon strange quark content directly from disconnected three-point functions. Numerical simulations are carried out in two-flavor QCD using the overlap quark action with up and down quark masses down to a fifth of the physical strange quark mass. To improve the statistical accuracy, we calculate the nucleon two-point functions with the low-mode averaging technique, whereas the all-to-all quark propagator is used for the disconnected quark loop. We obtain the y parameter, which is the ratio of the strange and light quark contents, y = 0.024(45) at the physical point. This is in a good agreement with our earlier calculation from the nucleon spectrum through the Feynman-Hellmann theorem.
description: 7 pages, talk presented at The XXVII International Symposium on Lattice Field Theory (Lattice2009), July 26-31 2009, Peking University, Beijing, China
O(N) and USp(N) QCD from String Theory
Creators: name: Imoto, Toshiya
name: Sakai, Tadakatsu
name: Sugimoto, Shigeki
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a holographic dual of large N_c QCD with the gauge group O(N_c) and USp(N_c) and N_f flavors of massless quarks. This is constructed by adding O6-planes to an intersecting D4-D8 system in type IIA superstring theory. The holographic dual description is formulated in the Witten's D4-brane background with D8-branes and O6-planes embedded in it as probes. The D4-brane background gives rise to a smooth interpolation of D8-anti-D8 pairs and an O6-anti-O6 pair. We show that the resultant brane configuration explains geometrically the flavor symmetry breaking patterns in O(N_c) and USp(N_c) QCD that are caused by quark bilinear condensates. We next discuss that baryons can be realized as D4-anti-D4 pairs wrapped on S^4 that intersect with the O6-plane. By analyzing the tachyons on it, we reproduce the stability conditions of the baryons that are expected from the gauge theory viewpoint. The stable baryon configurations are classified systematically by using K-theory. We also give a similar analysis for the flux tubes and again reproduce the results that are consistent with QCD.
description: 20 pages, 2 figures, v2: discussions of flux tubes clarified, references added, v3: minor changes, final version published in PTP
Imaging coherent transport in graphene (Part II): Probing weak localization
Creators: name: Berezovsky, Jesse
name: Westervelt, Robert M
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Graphene has opened new avenues of research in quantum transport, with potential applications for coherent electronics. Coherent transport depends sensitively on scattering from microscopic disorder present in graphene samples: electron waves traveling along different paths interfere, changing the total conductance. Weak localization is produced by the coherent backscattering of waves, while universal conductance fluctuations are created by summing over all paths. In this work, we obtain conductance images of weak localization with a liquid-He-cooled scanning probe microscope, by using the tip to create a movable scatterer in a graphene device. This technique allows us to investigate coherent transport with a probe of size comparable to the electron wavelength. Images of magnetoconductance \textit{vs.} tip position map the effects of disorder by moving a single scatterer, revealing how electron interference is modified by the tip perturbation. The weak localization dip in conductivity at B=0 is obtained by averaging magnetoconductance traces at different positions of the tip-created scatterer. The width $ΔB_{WL}$ of the dip yields an estimate of the electron coherence length $L_ϕ$ at fixed charge density. This "scanning scatterer" method provides a new way of investigating coherent transport in graphene by directly perturbing the disorder configuration that creates these interferometric effects.
description: 18 pages, 7 figures
Triple Classification for Scholarly Knowledge Graph Completion
Creators: name: Jaradeh, Mohamad Yaser
name: Singh, Kuldeep
name: Stocker, Markus
name: Auer, Sören
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Scholarly Knowledge Graphs (KGs) provide a rich source of structured information representing knowledge encoded in scientific publications. With the sheer volume of published scientific literature comprising a plethora of inhomogeneous entities and relations to describe scientific concepts, these KGs are inherently incomplete. We present exBERT, a method for leveraging pre-trained transformer language models to perform scholarly knowledge graph completion. We model triples of a knowledge graph as text and perform triple classification (i.e., belongs to KG or not). The evaluation shows that exBERT outperforms other baselines on three scholarly KG completion datasets in the tasks of triple classification, link prediction, and relation prediction. Furthermore, we present two scholarly datasets as resources for the research community, collected from public KGs and online resources.
stellatum_: ecossistema
Creators: name: Neto, Anésio Azevedo Costa
Publisher: name: Labfront/UEMG
Year: 2023

description: A performance audiovisual é um meio expressivo artístico contemporâneo, que visa a instauração de experiências estéticas mediadas por áudio e imagem, a fim de emular sensações de deslocamento espaço-temporal nos espectadores. “ecossistemas” consiste em utilizar materialidades sonoro-visuais de dois domínios morfoclimáticos do Brasil, o Cerrado e Mares de Morro (onde ocorre a Mata Atlântica), e propor a conjugação de percepções audiovisuais dispostas como meio de resgatar a experiência espaço-temporal do artista em e nas paisagens remotas do Cerrado e Mata Atlântica. Desta feita, o objetivo central deste artigo é esmiuçar os conceitos delineados pela prática artística e debater as ferramentas utilizadas no processo criativo.
An Exceptional G(2) Extension of the Standard Model from the Correspondence with Cayley-Dickson Algebras Automorphism Groups
Creators: name: Masi, Nicolo'
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this article I propose a new criterion to extend the Standard Model of particle physics from a straightforward algebraic conjecture: the symmetries of physical microscopic forces originate from the automorphism groups of main Cayley-Dickson algebras, from complex numbers to octonions and sedenions. This correspondence leads to a natural enlargement of the Standard Model color sector, from a SU(3) gauge group to an exceptional Higgs-broken G(2) group, following the octonionic automorphism relation guideline. In this picture, an additional ensemble of massive G(2)-gluons emerges, which is separated from the particle dynamics of the Standard Model.
Orbital Evolution of a Particle Interacting with a Single Planet in a Protoplanetary Disk
Creators: name: Muto, Takayuki
name: Inutsuka, Shu-ichiro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the motion of a particle around a low mass planet embedded in a non-turbulent gaseous disk. We take into account the effect of the gas structure that is modified by the gravitational interaction between the planet. We derive an analytic formula that describes the change of the semi-major axis of the particle due to the encounter with the planet using local approximation in distant encounter regime. Our final formula includes the effects of steady, axisymmetric radial gas flow, the global gas pressure gradient in the disk, planet gravity, and the structure of the gas flow modified by the planet's gravity. We compare the analytic results with numerical calculations, and indicate that our formula well describes the secular evolution of the dust particles' semi-major axes well, especially for small particles with large drag coefficient. We discuss the conditions for dust gap opening around a low mass planet and radial distribution of dust particles. Our formula may provide a useful tool for calculating radial distribution of particles in a disk around the planet.
description: 54 pages, 17 figures, sections of numerical calulation extended and figures added, Accepted for Publication in ApJ
Energy distribution of 2+1 dimensional black holes with nonlinear electrodynamics
Creators: name: Balart, Leonardo
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The energy distributions for a black hole solution resulting from coupling electrodynamics and gravity in 2+1 dimensions are obtained. This solution considers the correction for a 2+1 static charged black hole from the first contribution of the weak field limit of one loop QED in 2+1 dimensions. The Einstein and Moller energy-momentum prescriptions are used to evaluate the energy distributions associated with the mentioned 2+1 dimensional black hole and other 2+1 black hole solutions coupled with nonlinear electrodynamics. A relation that connects the coefficients of both prescriptions is established.
description: 10 pages, no figures, references added
Recent advancement in functional properties and toxicity assessment of plant-derived bioactive peptides using bioinformatic approaches
Creators: name: Singh, Prem Pratap
name: Gupta, Vishal
name: Prakash, Bhanu
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified

description: Nowadays, biopeptides have gained considerable interest by the food industries, given their potent biological effect on health. BPs, when released from the sequence of their precursors by proteolytic enzymes, improved the various physiological functions of the body. Diabetic and hypertension are the two most common life-threatening diseases linked to dietary patterns. Angiotensin-converting enzyme (ACE) (hypertension-responsible glycoprotein) and dipeptidyl peptidase IV (DPP-IV) (proline-specific dimeric aminopeptidase) have been widely used as molecular target sites of action of bioactive compounds possessing antihypertensive and antidiabetic effects. Although, BPs possess considerable biological properties (antioxidant, antimicrobial, antiviral, immunomodulating, antiproliferative, antidiabetic, and antihypertensive effects), most of them possess inherent lacunae such as toxicity, allergenicity, bitterness, and lack of detailed mechanistic investigation, limiting their commercial application. The present review provides an overview on various sources of bioactive peptides, conventional and modern methods of extraction, and challenges that need to be addressed before its commercial application. In addition, bioinformatics’ role in exploring the functional properties of biopeptides (ACE and DPP-IV inhibitory effects) toxicity, the target site of action with special reference to plant-based peptides, and recent burgeoning proficiencies in biopeptide research have been discussed.
On the uniqueness of D=11 interactions among a graviton, a massless gravitino and a three-form. IV: Putting things together
Creators: name: Cioroianu, E. M.
name: Diaconu, E.
name: Sararu, S. C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Under the hypotheses of smoothness of the interactions in the coupling constant, locality, Poincare invariance, Lorentz covariance, and the preservation of the number of derivatives on each field in the Lagrangian of the interacting theory (the same number of derivatives like in the free Lagrangian), we prove that the only consistent interactions in D=11 among massless gravitini, a graviton, and a 3-form are described by N=1, D=11 SUGRA.
description: 45 pages
title: Patología del sistema pielocalicial: hallazgos en TC multidetector
Creators: name: Zabalza Unzue, Jokin
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Urinary Tract / Bladder
subject: CT
subject: Pathology

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
1.- Conocer la anatomía normal del sistema pielocalicial. 2.- Revisar la patología que afecta a los sistemas pielocaliciales y sus manifestaciones en tomografía computarizada multidetector...
Measuring radial flow of partonic and hadronic phases in relativistic heavy ion collision
Creators: name: Nayak, Jajati K.
name: Alam, Jan-e
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: It has been shown that the thermal photon and the lepton pair spectra can be used to estimate the radial velocity of different phases of the matter formed in nuclear collisions at ultra-relativistic energies. We observe a non-monotonic variation of the flow velocity with invariant mass of the lepton pair which is indicative of two different sources of thermal dilepton sources at early and late stage of the dynamically evolving system. We also show that the study of radial velocity through electromagnetic probes may shed light on the nature of the phase transition from hadrons to QGP.
description: 0ne figure added, minor modification in text
Conversion of neutral nitrogen-vacancy centers to negatively-charged nitrogen-vacancy centers through selective oxidation
Creators: name: Fu, K. -M. C.
name: Santori, C.
name: Barclay, P. E.
name: Beausoleil, R. G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The conversion of neutral nitrogen-vacancy centers to negatively charged nitrogen-vacancy centers is demonstrated for centers created by ion implantation and annealing in high-purity diamond. Conversion occurs with surface exposure to an oxygen atmosphere at 465 C. The spectral properties of the charge-converted centers are investigated. Charge state control of nitrogen-vacancy centers close to the diamond surface is an important step toward the integration of these centers into devices for quantum information and magnetic sensing applications.
description: 4 pages, 3 figures
title: Patología benigna de mama, ¿en segundo plano?
Creators: name: Peris, Sara
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Breast

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Describir los signos radiológicos que presenta lapatologíabenigna mamaria en las diferentes técnicas de imagen,
ya que una amplia variedad de estas lesiones presentan hallazgos radiológicos que pueden llevar a...
Levy stable noise induced transitions: stochastic resonance, resonant activation and dynamic hysteresis
Creators: name: Dybiec, Bartlomiej
name: Gudowska-Nowak, Ewa
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A standard approach to analysis of noise-induced effects in stochastic dynamics assumes a Gaussian character of the noise term describing interaction of the analyzed system with its complex surroundings. An additional assumption about the existence of timescale separation between the dynamics of the measured observable and the typical timescale of the noise allows external fluctuations to be modeled as temporally uncorrelated and therefore white. However, in many natural phenomena the assumptions concerning the abovementioned properties of "Gaussianity" and "whiteness" of the noise can be violated. In this context, in contrast to the spatiotemporal coupling characterizing general forms of non-Markovian or semi-Markovian Lévy walks, so called Lévy flights correspond to the class of Markov processes which still can be interpreted as white, but distributed according to a more general, infinitely divisible, stable and non-Gaussian law. Lévy noise-driven non-equilibrium systems are known to manifest interesting physical properties and have been addressed in various scenarios of physical transport exhibiting a superdiffusive behavior. Here we present a brief overview of our recent investigations aimed to understand features of stochastic dynamics under the influence of Lévy white noise perturbations. We find that the archetypal phenomena of noise-induced ordering are robust and can be detected also in systems driven by non-Gaussian, heavy-tailed fluctuations with infinite variance.
description: 7 pages, 8 figures
Mobility of screw dislocation in BCC tungsten at high temperature in presence of carbon
Creators: name: Hachet, Guillaume
name: Caillard, Daniel
name: Ventelon, Lisa
name: Clouet, Emmanuel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The interplay of screw dislocations with carbon atoms is investigated in tungsten at high temperature using in situ straining experiments in a transmission electron microscope (TEM) and through ab initio calculations. When the temperature is high enough to activate carbon diffusion, above 1373 K, carbon segregates in the core of screw dislocations and modifies their mobility, even for a carbon concentration as low as 1 appm. TEM observations reveal the reappearance of a Peierls mechanism at these high temperatures, with screw dislocations gliding viscously through nucleation and propagation of kink-pairs. The mobility of screw dislocations saturated with carbon atoms is then investigated with ab initio calculations to determine kink-pair formation, nucleation and migration energies. These energies are used in kinetic Monte-Carlo simulations and in an analytical model to obtain the velocity of screw dislocations as a function of the temperature, the applied stress and the dislocation length. The obtained mobility law parametrised on ab initio calculations compares well with experiments.
Model Files
Creators: name: Wenxuan, Zhao
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 330108
subject: Interior design
classificationCode: 330102
subject: Architectural design
classificationCode: 330310
subject: Interaction and experience design
classificationCode: 330311
subject: Models and simulations of design

description: This dataset is the result of model training,Dreambooth (D4);Textual Inversion (T4) , Due to upload restrictions, if you need other model files, please contact email: xuan493044510@gmail.com
Density driven symmetry breaking and Butterfly effect in holographic superconductors
Creators: name: Kim, Youngman
name: Ko, Yumi
name: Sin, Sang-Jin
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the density driven symmetry breaking in holographic superconductors by considering the positive mass squared case. We show that even for the positive $m^2$, a scalar condensation still forms, provided the chemical potential is high enough. As $m^2$ increases, the phase space folds due to the non-linearity of the equations of motion, and two nearby points in the phase space can represent symmetry breaking and preserving configurations respectively. The phase space defined by the set of initial conditions of field variables at the horizon undergoes a non-linear radial evolution to result in the phase space folding, a characteristic phenomenon in a non-linear system. We then calculate the specific heat, which characterizes superconductors and has been measured in experiments.We observe a discontinuity in the specific heat at the transition point and compare our results with experimentally observed numbers. The electrical conductivity for various $m^2$ is also calculated.
description: 16 pages, v2: title changed, abstract and discussion updated, typos corrected, references added, to appear in PRD
title: Angiografía obtenida por TCMD en la extremidad superior
Creators: name: Guillén Subirán, Mª Eugenia
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Vascular
subject: Arteries / Aorta
subject: Extremities
subject: CT-Angiography
subject: Catheter arteriography
subject: Contrast agent-intravenous

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
La angiografía obtenida por TC se ha convertido en la técnica de elección en la evaluación de la patología vascular.
Aunque es más frecuente su aplicación en la patología aórtica y de las extremidades inferiores,
también nos permite...
Detection of monopoles and vortices in SU(2) Yang-Mills theory
Creators: name: Karimimanesh, Nafiseh
name: Deldar, Sedigheh
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Motivated by the correlated monopoles and vortices observed in lattice QCD, using Cho decomposition method and two successive gauge transformations which lead to the observation of configurations that include both monopoles and center vortices simultaneously, we obtain a Lagrangian density that explicitly indicates these two magnetic defects and the interaction between them.
description: 13 pages, 1 figure some typo errors are corrected