cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
R. Kekulé, Griechische Thonfiguren aus Tanagra, Stuttgart 1878
Creators: name: Dütschke, Hans
Publisher: name: Bonner Jahrbücher
Year: 2017

description: Rezension zu: R. Kekulé, Griechische Thonfiguren aus Tanagra, im Auftrage des
Kais. D. Arch. Instituts herausgegeben. Stuttg. 1878.
description: Bonner Jahrbücher, Bd. 62 (1878): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
Absence of magnetic interactions in Ni-Nb ferromagnet-superconductor bilayers
Creators: name: Satchell, Nathan
name: Quarterman, P.
name: Borchers, J. A.
name: Burnell, Gavin
name: Birge, Norman O.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Studies of ferromagnet-superconductor hybrid systems have uncovered magnetic interactions between the competing electronic orderings. The electromagnetic (EM) proximity effect predicts the formation of a spontaneous vector potential inside a superconductor placed in proximity to a ferromagnet. In this work, we use a Nb superconducting layer and Ni ferromagnetic layer to test for such magnetic interactions. We use the complementary, but independent, techniques of polarised neutron reflectometry and detection Josephson junctions to probe the magnetic response inside the superconducting layer at close to zero applied field. In this condition, Meissner screening is negligible, so our measurements examine only additional magnetic and screening contributions from proximity effects. We report the absence of any signals originating from EM proximity effect in zero applied field. Our observations indicate that either EM proximity effect is below the detection resolution of both of our experiments or may indicate a new phenomenon that requires extension of current theory. From our measurements, we estimate a limit of the size of the zero field EM proximity effect in our Ni-Nb samples to be $\pm0.27$ mT.
description: Main text 18 pages, 4 figures, 1 table. Plus SI 10 pages, 8 figures
Reassessing the importance of the colour-singlet contributions to direct J/psi+W production at the LHC and the Tevatron
Creators: name: Lansberg, J. P.
name: Lorce, C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We show that the colour-singlet contributions to the hadroproduction of J/psi in association with a W boson are sizable, if not dominant over the colour-octet contributions. They are of two kinds, sg -> J/psi + c + W at alpha^3_S alpha and q q'-bar -> gamma*/Z* W -> J/psi W at order alpha^3. These have not been considered in the literature until now. Our conclusion is that the hadroproduction of a J/psi in association with a W boson cannot be claimed as a clean probe of the colour-octet mechanism. The rate are small even at the LHC and it will be very delicate to disentangle the colour-octet contributions from the sizable colour-singlet ones and from the possibly large double-parton-scattering contributions. During this analysis, we have also noted that, for reactions such as the production of a J/psi by light quark-antiquark fusion, the colour-singlet contribution via an off-shell photon is of the order of the expectation from the colour-octet contribution via an off-shell gluon. This is relevant for inclusive production at low energies close to the threshold. Such an observation also likely extends to other processes naturally involving light-quark annihilation.
description: 5 pages, 8 figures, LaTeX (uses elsarticle.cls). v2 (as published in PLB): slight rewordings; discussion on the contributions from the 3 body decay W -> J/psi+mu+nu_mu, from double-parton scatterings and from chi(c) decay added; plotting error in Figs 2 & 3 fixed
Dub Reel 2
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019

description: El Forastero," "El Pueblo" by Quilapayun plays, and a guest band performs folk-revival songs including, "If You Want To Be a Bird," "Poison Sugar," "The Backwoodsman," and "Low Down Dog," and "Daddy Don't Live In that New York City No More" by Steely Dan plays.
Eigenvalue estimates for a class of elliptic differential operators on compact manifolds
Creators: name: Alencar, Hilário
name: Neto, Gregório Silva
name: Zhou, Detang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58J50, 58J60, 53C21, 53C42

description: The motivation of this paper is to study a second order elliptic operator which appears naturally in Riemannian geometry, for instance in the study of hypersurfaces with constant $r$-mean curvature. We prove a generalized Bochner-type formula for such a kind of operators and as applications we obtain some sharp estimates for the first nonzero eigenvalues in two special cases. These results can be considered as generalizations of the Lichnerowicz-Obata Theorem.
description: 31 pages. To appear in Bulletin of the Brazilian Mathematical Society, New Series. Final version attending the suggestions of referee
10 dB emission suppression in a structured low index medium
Creators: name: Saha, Soumyadeep
name: Mustafa, Meraj E
name: Eich, Manfred
name: Petrov, Alexander Yu.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Significant suppression of radiation in 3D structured media with small refractive index 1.4-1.6, such as of glass or polymers, is a desirable feature yet to be obtained. For periodical structures this is realised at frequencies of the complete photonic band gap (CPBG), which up to now was demonstrated to open for materials with refractive index of at least 1.9. We present here a quasiperiodic 3D structure consisting of multiple overlapping gratings with a homogeneous distribution of Bragg peaks on a sphere in reciprocal space, which allows efficient suppression of emission. Recently we have presented the theoretical model, considering interaction with the neighbouring gratings only, that estimates a finite CPBG for arbitrarily small refractive indices and thus complete emission suppression in infinite structures. However, numerical simulations demonstrate a finite leakage of power from emitter not predicted by the model. Still the simulations show -10 dB suppression in 3D structures with optimised number of gratings. Astonishingly, as we show here, this limit is almost independent of the refractive index contrast. Also, the structures with a defined number of gratings show maximal suppression at certain refractive indices, losing the suppression even at higher refractive indices. The -10 dB suppression is demonstrated for refractive index contrast as low as 1.30.
Decision‐Making About Reproductive Choices Among Individuals At‐Risk for Huntington's Disease
Creators: name: Klitzman, Robert L.
name: Thorne, Deborah Z.
name: Williamson, Jennifer
name: Chung, Wendy K.
name: Marder, Karen
Publisher: name: Columbia University
Year: 2007
Subjects: Genetic counseling
Genetic disorders
Human chromosome abnormalities--Diagnosis--Moral and ethical aspects
Huntington's disease
Human reproduction--Decision making

description: We explored how individuals at‐risk for HD who have or have not been tested make reproductive decisions and what factors are involved. We interviewed 21 individuals (8 with and 4 without the mutation, and 9 un‐tested) in‐depth for 2 hours each. At‐risk individuals faced a difficult series of dilemmas of whether to: get pregnant and deliver, have fetal testing, have pre‐implantation genetic diagnosis, adopt, or have no children. These individuals weighed competing desires and concerns: their own desires vs. those of spouses vs. broader moral concerns (e.g., to end the disease; and/or follow dictates against abortion) vs. perceptions of the interests of current or future offspring. Quandaries arose of how much and to whom to feel responsible. Some changed their perspectives over time (e.g., first “gambling,” then being more cautious). These data have critical implications for genetic counselors and other health care workers and future research, particularly as more genetic tests become available.
title: Διαδίκτυο και εξάρτηση
Creators: name: Κατάκη Εβίτα
Publisher: name: Technical University of Crete
Year: 2012

description:  μέρος: Κεφ. 1: Το διαδίκτυο -- Κεφ. 2: Εικονική πραγματικότητα -- Κεφ. 3: Η σημασία του διαδικτύου (Οφέλη και ζημίες) -- Κεφ. 4: Εξάρτηση και κοινωνικοποίηση -- Κεφ. 5: Εξάρτηση από το Διαδίκτυο (Internet addiction) -- Κεφ. 6: Εξάρτηση και προσωπικότητα -- Κεφ. 7: Συμπτώματα και αντιμετώπιση - Β' μέρος: Κεφ. 1: Η κατάσταση στην Ελλάδα -- Κεφ. 2: Έρευνα σε εφήβους του νομού Χανίων
title: Αριθμητική επίλυση νόμων διατήρησης με χρήση μη-δομημένων μεθόδων πεπερασμένων όγκων σε παράλληλη υλοποίηση
Creators: name: Βαβίλης Παναγιώτης Σ.
Publisher: name: Technical University of Crete
Year: 2012

description:  Εισαγωγή -- 2. Μαθηματικό Μοντέλο -- 3. Κεντροθετιμένη Διακριτοποίηση Πεπερασμένων Όγκων -- 4. Σειριακός Κώδικας -- 5. Παράλληλος Κώδικας -- 6. Αριθμητικά αποτελέσματα -- 7. Ανάλυση απόδοσης
Mirror mode storms observed by Solar Orbiter
Creators: name: Dimmock, A. P.
name: Yordanova, E.
name: Graham, D. B.
name: Khotyaintsev, Yu. V.
name: Blanco-Cano, X.
name: Kajdič, P.
name: Karlsson, T.
name: Fedorov, A.
name: Owen, C. J.
name: Werner, E. A. L. E.
name: Johlander, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Mirror modes are ubiquitous in space plasma and grow from pressure anisotropy. Together with other instabilities, they play a fundamental role in constraining the free energy contained in the plasma. This study focuses on mirror modes observed in the solar wind by Solar Orbiter for heliocentric distances between 0.5 and 1 AU. Typically, mirror modes have timescales from several to tens of seconds and are considered quasi-MHD structures. In the solar wind, they also generally appear as isolated structures. However, in certain conditions, prolonged and bursty trains of higher frequency mirror modes are measured, which have been labeled previously as mirror mode storms. At present, only a handful of existing studies have focused on mirror mode storms, meaning that many open questions remain. In this study, Solar Orbiter has been used to investigate several key aspects of mirror mode storms: their dependence on heliocentric distance, association with local plasma properties, temporal/spatial scale, amplitude, and connections with larger-scale solar wind transients. The main results are that mirror mode storms often approach local ion scales and can no longer be treated as quasi-MHD, thus breaking the commonly used long-wavelength assumption. They are typically observed close to current sheets and downstream of interplanetary shocks. The events were observed during slow solar wind speeds and there was a tendency for higher occurrence closer to the Sun. The occurrence is low, so they do not play a fundamental role in regulating ambient solar wind but may play a larger role inside transients.
Jochen Kütter, Graffiti auf römischer Gefäßkeramik aus Neuss
Creators: name: Heising, Alexander
Publisher: name: Bonner Jahrbücher
Year: 2017

description: Rezension zu: Jochen Kütter, Graffiti auf römischer Gefäßkeramik aus Neuss. Shaker Verlag, Aachen 2008. 253 Seiten, 25 Abbildungen, 67 Schwarzweißtafeln, 3 Farbtafeln, I Kartenanhang
description: Bonner Jahrbücher, Bd. 208.2008(2010): Bonner Jahrbücher
Representability of matroids with a large projective geometry minor
Creators: name: Geelen, Jim
name: Kapadia, Rohan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B35

description: We prove that for each prime power $q$ there is an integer $n$ such that if $M$ is a $3$-connected, representable matroid with a PG$(n-1,q)$-minor and no $U_{2,q^2+1}$-minor, then $M$ is representable over GF$(q)$. We also show that for $\ell >= 2$, if $M$ is a $3$-connected, representable matroid of sufficiently high rank with no $U_{2,\ell+2}$-minor and $|E(M)| \geq (4\ell)^{r(M)/2}$, then $M$ is representable over a field of order at most $\ell$.
description: 10 pages
Callisto's atmosphere: First evidence for H2 and constraints on H2O
Creators: name: Mogan, Shane R. Carberry
name: Tucker, Orenthal J.
name: Johnson, Robert E.
name: Roth, Lorenz
name: Alday, Juan
name: Vorburger, Audrey
name: Wurz, Peter
name: Galli, Andre
name: Smith, H. Todd
name: Marchand, Benoit
name: Oza, Apurva V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We explore the parameter space for the contribution to Callisto's H corona observed by the Hubble Space Telescope (Roth et al. 2017a) from sublimated H2O and radiolytically produced H2 using the Direct Simulation Monte Carlo (DSMC) method. The spatial morphology of this corona produced via photo- and magnetospheric electron impact-induced dissociation is described by tracking the motion of and simulating collisions between the hot H atoms and thermal molecules including a near-surface O2 component. Our results indicate that sublimated H2O produced from the surface ice, whether assumed to be intimately mixed with or distinctly segregated from the dark non-ice or ice-poor regolith, cannot explain the observed structure of the H corona. On the other hand, a global H2 component can reproduced the observation, and is also capable of producing the enhanced electron densities observed at high altitudes by Galileo's plasma-wave instrument (Gurnett et al., 1997, 2000), providing the first evidence of H2 in Callisto's atmosphere. The range of H2 surface densities explored, under a variety of conditions, that are consistent with these observations is ~(0.4-1)x10^8 cm^-3. The simulated H2 escape rates and estimated lifetimes suggest that Callisto has a neutral H2 torus. We also place a rough upper limit on the peak H2O number density (<~10^8 cm^-3), column density (<~10^15 cm^-2), and sublimation flux (<~10^12 cm^-2 s^-1), all of which are 1-2 orders of magnitude less than that assumed in previous models. Finally, we discuss the implications of these results, as well as how they compare to Europa and Ganymede.
title: arch.TUC / Πρόταση για νέο κτίριο της Σχολής Αρχιτεκτονικής του Πολυτεχνείου Κρήτης
Creators: name: Καπαγιαννιδης Κωνσταντινος
Publisher: name: Technical University of Crete
Year: 2015

description: Η εργασία αφορά πρόταση για νέο κτίριο της Σχολής Αρχιτεκτόνων Μηχανικών του Πολυτεχνείου Κρήτης
Automated calculations of exchange magnetostriction
Creators: name: Nieves, P.
name: Arapan, S.
name: Zhang, S. H.
name: Kądzielawa, A. P.
name: Zhang, R. F.
name: Legut, D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a methodology based on deformations of the unit cell that allows to compute the isotropic magnetoelastic constants, isotropic magnetostrictive coefficients and spontaneous volume magnetostriction associated to the exchange magnetostriction. This method is implemented in the python package MAELAS (v3.0), so that it can be used to obtain these quantities by first-principles calculations and classical spin-lattice models in an automated way. We show that the required reference state to obtain the spontaneous volume magnetostriction combines the equilibrium volume of the paramagnetic state and magnetic order of the ground state. We identify an error in the theoretical expression of the isotropic magnetostrictive coefficient $λ^{α1,0}$ for uniaxial crystals given in previous publications, which is corrected in this work. The presented computational tool may be helpful to provide a better understanding and characterization of the relationship between the exchange interaction and magnetoelasticity.
Exact Mapping between Tensor and Most General Scalar Power Spectra
Creators: name: Jimenez, Jose Beltran
name: Musso, Marcello
name: Ringeval, Christophe
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We prove an exact relation between the tensor and the scalar primordial power spectra generated during inflation. Such a mapping considerably simplifies the derivation of any power spectra as they can be obtained from the study of the tensor modes only, which are much easier to solve. As an illustration, starting from the second order slow-roll tensor power spectrum, we derive in a few lines the next-to-next-to-leading order power spectrum of the comoving curvature perturbation in generalized single field inflation with a varying speed of sound.
description: 7 pages, uses RevTeX. New appendix with third order spectral index and runnings. References and physical discussions added. Matches published version
Two-dimensional polaron spectroscopy of Fermi superfluids
Creators: name: Amelio, Ivan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Multidimensional spectroscopy is becoming an increasingly popular tool and there is an ongoing effort to access electronic transitions and many-body dynamics in correlated materials. We apply the protocol recently proposed by Wang to extract two-dimensional polaron spectra in a Fermi superfluid with an impurity. The bath is descibed by a BCS ansatz and it assumed that the impurity can scatter at most one quasiparticle pair. The spectral response contains a symmetric contribution, which carries the same information as Ramsey spectra, and an asymmetric one. While {\it a priori} it may seem promising to probe the quasiparticle gap from the asymmetric contribution, we show explicitly that this is not the case and, in the absence of incoherent processes, multidimensional spectroscopy does not bring much additional information. Our calculation is suitable for 3D ultracold gases, but we discuss implications for exciton-polarons in 2D materials.
Additional file 1 of Inflammation and renal function decline in chronic coronary syndrome: a prospective multicenter cohort study
Creators: name: Kao, Ting-Wei
name: Huang, Chin-Chou
name: Leu, Hsin-Bang
name: Yin, Wei-Hsian
name: Tseng, Wei-Kung
name: Wu, Yen-Wen
name: Lin, Tsung-Hsien
name: Yeh, Hung-I
name: Chang, Kuan-Cheng
name: Wang, Ji-Hung
name: Wu, Chau-Chung
name: Chen, Jaw-Wen
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Cancer
subject: Science Policy

description: Supplementary Material 1
A Data-constrained Magnetohydrodynamic Simulation of the X1.0 Solar Flare of 2021 October 28
Creators: name: Yamasaki, Daiki
name: Inoue, Satoshi
name: Bamba, Yumi
name: Lee, Jeongwoo
name: Wang, Haimin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The solar active region NOAA 12887 produced a strong X1.0 flare on 2021 October 28, which exhibits X-shaped flare ribbons and a circle-shaped erupting filament. To understand the eruption process with these characteristics, we conducted a data-constrained magnetohydrodynamics simulation using a nonlinear force-free field of the active region about an hour before the flare as the initial condition. Our simulation reproduces the filament eruption observed in the Ha images of GONG and the 304 angstrom images of SDO/AIA and suggests that two mechanisms can possibly contribute to the magnetic eruption. One is the torus instability of the pre-existing magnetic flux rope (MFR), and the other is upward pushing by magnetic loops newly formed below the MFR via continuous magnetic reconnection between two sheared magnetic arcades. The presence of this reconnection is evidenced by the SDO/AIA observations of the 1600 angstrom brightening in the footpoints of the sheared arcades at the flare onset. To clarify which process is more essential for the eruption, we performed an experimental simulation in which the reconnection between the sheared field lines is suppressed. In this case too, the MFR could erupt, but at a much reduced rising speed. We interpret this result as indicating that the eruption is not only driven by the torus instability, but additionally accelerated by newly formed and rising magnetic loops under continuous reconnection.
description: 14 pages, 7 figures. Accepted for the Astrophysical Journal
Missed opportunities: GRB 211211A and the case for continual gravitational-wave coverage with a single observatory
Creators: name: Sarin, Nikhil
name: Lasky, Paul D.
name: Nathan, Rowina S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gamma-ray burst GRB 211211A may have been the result of a neutron star merger at $\approx350$ Mpc. However, none of the LIGO-Virgo detectors were operating at the time. We show that the gravitational-wave signal from a \grb-like binary neutron star inspiral in the next LIGO-Virgo-KAGRA observing run (O4) would be below the conventional detection threshold, however a coincident gamma-ray burst observation would provide necessary information to claim a statistically-significant multimessenger observation. We calculate that with O4 sensitivity, approximately $11\%$ of gamma-ray bursts within 600 Mpc will produce a confident association between the gravitational-wave binary neutron star inspiral signature and the prompt gamma-ray signature. This corresponds to a coincident detection rate of $\unit[0.22^{+8.3}_{-0.22}]{yr^{-1}}$, where the uncertainties are the 90\% confidence intervals arising from uncertainties in the absolute merger rate, beaming and jet-launching fractions. These increase to approximately $34\%$ and $\unit[0.71^{+26.8}_{-0.70}]{yr^{-1}}$ with proposed O5 sensitivity. We show that the above numbers do not depend significantly on the number of gravitational-wave observatories operating with the specific sensitivity. That is, the number of confident joint gamma-ray burst and gravitational-wave detections is only marginally improved with two or three detectors operating compared to a single detector. It is therefore worth considering whether one detector with sufficient sensitivity (post O4) should remain in sky-watch mode at all times to elucidate the true nature of GRB 211211A-like events, a proposal we discuss in detail.
description: Accepted in MNRAS, 8 pages 2 figures
"The sun was darkened for seventeen days (AD 797)". An interdisciplinary exploration of celestial phenomena between Byzantium, Charlemagne, and a volcanic eruption
Creators: name: Preiser-Kapeller, Johannes
name: Kislinger, Ewald
Publisher: name: arXiv
Year: 2022
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The blinding of the Byzantine Emperor Constantine VI in Constantinople in August 797 and his overthrow by his mother Eirene, who then until 802 ruled as first female emperor of the Eastern Roman Empire, was used as legitimation for the coronation of the Frankish King Charlemagne as emperor of the Romans on December 25, 800, by contemporaries in Western Europe. Some observers in the West may have even interpreted the downfall of the Eastern Roman emperor and his replacement by a woman as sign of an impending collapse of the Roman Empire and the entire world order as already expected, based on chiliastic calculations. We equally find indications of apocalyptic expectations in Constantinople, where the blinding of Constantine was linked with a spectacular celestial manifestation of divine disapproval, a darkening of the sun for 17 days. In this paper, this obfuscation of the sun is compared with the description of other atmospheric and climatic phenomena in the 8th and 9th century as well as before and after this period. In addition, natural scientific data is used to disprove earlier hypotheses on the physical background to this event and to present a more probable scenario, i. e., the impacts of one or more volcanic eruptions, for the darkening of 797 and other phenomena, which provided a peculiar atmospheric framework for the interpretation of the events between the downfall of Constantine VI and the coronation of Charlemagne by contemporaries.
description: Pre-Print (post peer review), accepted for publication in the journal Medieval Worlds
Left Bit Right: For SPARQL Join Queries with OPTIONAL Patterns (Left-outer-joins)
Creators: name: Atre, Medha
Publisher: name: arXiv
Year: 2013
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences
subject: H.2.4

description: SPARQL basic graph pattern (BGP) (a.k.a. SQL inner-join) query optimization is a well researched area. However, optimization of OPTIONAL pattern queries (a.k.a. SQL left-outer-joins) poses additional challenges, due to the restrictions on the \textit{reordering} of left-outer-joins. The occurrence of such queries tends to be as high as 50% of the total queries (e.g., DBPedia query logs). In this paper, we present \textit{Left Bit Right} (LBR), a technique for \textit{well-designed} nested BGP and OPTIONAL pattern queries. Through LBR, we propose a novel method to represent such queries using a graph of \textit{supernodes}, which is used to aggressively prune the RDF triples, with the help of compressed indexes. We also propose novel optimization strategies -- first of a kind, to the best of our knowledge -- that combine together the characteristics of \textit{acyclicity} of queries, \textit{minimality}, and \textit{nullification}, \textit{best-match} operators. In this paper, we focus on OPTIONAL patterns without UNIONs or FILTERs, but we also show how UNIONs and FILTERs can be handled with our technique using a \textit{query rewrite}. Our evaluation on RDF graphs of up to and over one billion triples, on a commodity laptop with 8 GB memory, shows that LBR can process \textit{well-designed} low-selectivity complex queries up to 11 times faster compared to the state-of-the-art RDF column-stores as Virtuoso and MonetDB, and for highly selective queries, LBR is at par with them.
description: SIGMOD 2015
Coherent control of topological states in an integrated waveguide lattice
Creators: name: Mikhin, Alexey
name: Rutckaia, Viktoriia
name: Savelev, Roman S.
name: Sinev, Ivan S.
name: Alù, Andrea
name: Gorlach, Maxim A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Topological photonics holds the promise for enhanced robustness of light localization and propagation enabled by the global symmetries of the system. While traditional designs of topological structures rely on lattice symmetries, there is an alternative strategy based on accidentally degenerate modes of the individual meta-atoms. Using this concept, we experimentally realize topological edge state in an integrated optical nanostructure based on the array of silicon nano-waveguides, each hosting a pair of degenerate modes at telecom wavelengths. Exploiting the hybrid nature of the topological mode formed by the superposition of waveguide modes with different symmetry, we implement coherent control of the topological edge state by adjusting the phase between the degenerate modes and demonstrating selective excitation of bulk or edge states. The resulting field distribution is imaged via third harmonic generation allowing us to quantify the localization of topological modes as a function of the relative phase of the excitations. Our results highlight the impact of engineered accidental degeneracies on the formation of topological phases, extending the opportunities stemming from topological nanophotonic systems.
description: 17 pages, 4 figures
Challenges and changes in spirituality among doctors who become patients
Creators: name: Klitzman, Robert L.
name: Daya, Shaira
Publisher: name: Columbia University
Year: 2005
Subjects: Spirituality
Spirituality--Health aspects
Medicine--Religious aspects
Patients--Religious life
Physician and patient

description: Though spirituality can help patients cope with illness, several studies have suggested that physicians view spirituality differently than do patients. These issues have not been systematically investigated among doctors who become patients, and who may be able to shed critical light on this area. We interviewed fifty doctors from major urban US centers who had become patients due to serious illnesses about their experiences and views relating to religion and spirituality before and after diagnosis, and we explore the range of issues that emerged. These physician-patients revealed continua of forms and contents of spirituality. The forms ranged from being spiritual to start with; to being spiritual, but not thinking of themselves as such; to wanting but being unable to believe. Some continued to doubt and, perhaps relatedly, appeared depressed. The contents of beliefs ranged from established religious traditions, to mixing beliefs, or having non-specific beliefs (e.g., concerning the power of nature). One group of doctors felt wary of organized religion, which could prove an obstacle to belief. Others felt that symptoms could be reduced through prayer. At times, self-assessments of spirituality were difficult to make or inaccurate. Questions surfaced concerning whether and how medical education could best address these issues, and how spirituality may affect clinical work. This study is the first that we know of to examine spirituality among physicians when they become patients. Obstacles to physicians’ attentiveness to the potential role of spirituality arose that need to be further explored in medical education and future research. Increased a wareness of these areas could potentially have clinical relevance, strengthening doctor–patient relationships and communication, and patient satisfaction.
K-inflationary Power Spectra at Second Order
Creators: name: Martin, Jerome
name: Ringeval, Christophe
name: Vennin, Vincent
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Within the class of inflationary models, k-inflation represents the most general single field framework that can be associated with an effective quadratic action for the curvature perturbations and a varying speed of sound. The incoming flow of high-precision cosmological data, such as those from the Planck satellite and small scale Cosmic Microwave Background (CMB) experiments, calls for greater accuracy in the inflationary predictions. In this work, we calculate for the first time the next-to-next-to-leading order scalar and tensor primordial power spectra in k-inflation needed in order to obtain robust constraints on the inflationary theory. The method used is the uniform approximation together with a second order expansion in the Hubble and sound flow functions. Our result is checked in various limits in which it reduces to already known situations.
description: 22 pages, uses jcappub. Discussions and references added, matches published version
[Pro Lingua Latina e.V. / ambulatio electronica Pompeiana / „Kurioses aus dem Altertum. Für den Unterricht ausgewählte Texte der Antike“…]
Creators: name: Kipf, Stefan
Publisher: name: Forum Classicum
Year: 2017

description: -
description: Forum Classicum, Nr. 1 (2001): Forum Classicum
Anticipating issues related to increasing preimplantation genetic diagnosis use: a research agenda
Creators: name: Klitzman, Robert L.
name: Appelbaum, Paul S.
name: Chung, Wendy K.
name: Sauer, Mark V.
Publisher: name: Columbia University
Year: 2008
Subjects: Preimplantation genetic diagnosis
Human reproductive technology--Moral and ethical aspects
Human reproduction--Decision making
Physician and patient
Bioethics

description: Increasing use of preimplantation genetic diagnosis (PGD) poses numerous clinical, social, psychological, ethical, legal and policy dilemmas, many of which have received little attention. Patients and providers are now considering and using PGD for a widening array of genetic disorders, and patients may increasingly seek ‘designer babies.’ In the USA, although governmental oversight policies have been discussed, few specific guidelines exist. Hence, increasingly, patients and providers will face challenging ethical and policy questions of when and for whom to use PGD, and how it should be financed. These issues should be better clarified and addressed through collection of data concerning the current use of PGD in the USA, including factors involved in decision making about PGD use, as well as the education of the various communities that are, and should be, involved in its implementation. Improved understanding of these issues will ultimately enhance the development and implementation of future clinical guidelines and policies.
Maier, Friedrich: Zukunft der Antike. Die Klassischen Sprachen am Scheideweg
Creators: name: Schulz, Hartmut
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Maier, Friedrich: Zukunft der Antike. Die Klassischen Sprachen am Scheideweg. Bamberg: C. C. Buchner. 2000. 229 S. (ISBN 3 7661 5699 3).
description: Forum Classicum, Nr. 1 (2001): Forum Classicum
title: Κρητική λαϊκή αρχιτεκτονική: ζητήματα οικονομικής αυτάρκειας
Creators: name: Ραψομανικη Βασιλεια-Διονυσια
Publisher: name: Technical University of Crete
Year: 2014

description: Η παρούσα εργασία ερευνά την επιρροή της πρωτογενούς παραγωγής στη λαϊκή αρχιτεκτονική της Κρήτης, καθώς και τον τρόπο με τον οποίο η πρόθεση για οικονομική αυτάρκεια της οικογένειας επηρέασε την αρχιτεκτονική στην Κρήτη. Η περίοδος που θα καλυφθεί είναι από τα μέσα του 16ου αιώνα,δηλαδή από την κατάρευση της Λατινοκρατίας και της πρώιμης Οθωμανικής κυριαρχίας, έως τις αρχές του 20ου αιώνα.
Additional file 1 of Protecting small and sick newborn care in the COVID-19 pandemic: multi-stakeholder qualitative data from four African countries with NEST360
Creators: name: Steege, Rosie
name: Mwaniki, Hannah
name: Ogueji, Ifeanyichukwu Anthony
name: Baraka, Jitihada
name: Salimu, Sangwani
name: Kumar, Meghan Bruce
name: Kawaza, Kondwani
name: Odedere, Opeyemi
name: Shamba, Donat
name: Bokea, Helen
name: Chiume, Msandeni
name: Adudans, Steve
name: Ezeaka, Chinyere
name: Paul, Catherine
name: Banyira, Laurent
name: Lungu, Gaily
name: Salim, Nahya
name: Zimba, Evelyn
name: Ngwala, Samuel
name: Tarus, Alice
name: Bohne, Christine
name: Gathara, David
name: Lawn, Joy E.
Publisher: name: figshare
Year: 2023
Subjects: Medicine
Biological Sciences not elsewhere classified
Cancer
Science Policy
Computational Biology

description: Additional file 1.
Clues to the formation of Liller 1 from modeling its complex star formation history
Creators: name: Dalessandro, E.
name: Crociati, C.
name: Cignoni, M.
name: Ferraro, F. R.
name: Lanzoni, B.
name: Origlia, L.
name: Pallanca, C.
name: Rich, R. M.
name: Saracino, S.
name: Valenti, E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Liller 1 and Terzan 5 are two massive systems in the Milky-Way bulge hosting populations characterized by significantly different ages ($Δt>7-8$ Gyr) and metallicities ($Δ$[Fe/H]$\sim1$ dex). Their origin is still strongly debated in the literature and all formation scenarios proposed so far require some level of fine-tuning. The detailed star formation histories (SFHs) of these systems may represent an important piece of information to assess their origin. Here we present the first attempt to perform such an analysis for Liller 1. The first key result we find is that Liller 1 has been forming stars over its entire lifetime. More specifically, three broad SF episodes are clearly detected: 1) a dominant one, occurred some 12-13 Gyr ago with a tail extending for up to $\sim3$ Gyr, 2) an intermediate burst, between 6 and 9 Gyr ago, 3) and a recent one, occurred between 1 and 3 Gyr ago. The old population contributes to about $70\%$ of the total stellar mass and the remaining fraction is almost equally split between the intermediate and young populations. If we take these results at a face value, they would suggest that this system unlikely formed through the merger between an old globular cluster and a Giant Molecular Cloud, as recently proposed. On the contrary, our findings provide further support to the idea that Liller 1 is the surviving relic of a massive primordial structure that contributed to the Galactic bulge formation, similarly to the giant clumps observed in star-forming high-redshift galaxies.
description: 23 pages, 14 figures; accepted for publication in ApJ
Statistical investigations on nitrogen-vacancy center creation
Creators: name: Antonov, Denis
name: Häußermann, Timo
name: Aird, Andrew
name: Roth, Johannes
name: Trebin, Hans-Reiner
name: Müller, Christoph
name: McGuiness, Liam
name: Jelezko, Fedor
name: Yamamoto, Takashi
name: Isoya, Junichi
name: Pezzagna, Sébastien
name: Meijer, Jan
name: Wrachtrup, Jörg
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Experiments show that shallow nitrogen implantations (<10keV) result in a negatively charged nitrogen-vacancy center (NV-) yield of 0.01-0.1%. The most succesful technique for introducing NV- centers in the carbon matrix is ion implantation followed by annealing at 1100K. We investigated the influence of channeling effects during shallow implantation and statistical diffusion using molecular dynamics (MD) and Monte Carlo (MC) approaches. Energy barriers for the diffusion process were calculated using the density functional theory (DFT). Our simulations show a significant difference in the NV yield compared to the experiment. Statistically, 25% of the implanted nitrogens form a NV center after annealing.
description: 5 pages, 6 figures
“Am I my genes?”: Questions of identity among individuals confronting genetic disease
Creators: name: Klitzman, Robert L.
Publisher: name: Columbia University
Year: 2009
Subjects: Genetic disorders
Human chromosome abnormalities--Diagnosis
Physician and patient
Identity (Psychology)

description: Purpose: To explore many questions raised by genetics concerning personal identities that have not been fully investigated. Methods: We interviewed in depth, for 2 hours each, 64 individuals who had or were at risk for Huntington disease, breast cancer, or alpha-1 antitrypsin deficiency. Results: These individuals struggled with several difficult issues of identity. They drew on a range of genotypes and phenotypes (e.g., family history alone; mutations, but no symptoms; or symptoms). They often felt that their predicament did not fit preexisting categories well (e.g., “sick,” “healthy,” “disabled,” “predisposed”), due in part to uncertainties involved (e.g., unclear prognoses, since mutations may not produce symptoms). Hence, individuals varied in how much genetics affected their identity, in what ways, and how negatively. Factors emerged related to disease, family history, and other sources of identity. These identities may, in turn, shape disclosure, coping, and other health decisions. Conclusions: Individuals struggle to construct a genetic identity. They view genetic information in highly subjective ways, varying widely in what aspects of genetic information they focus on and how. These data have important implications for education of providers (to assist patients with these issues), patients, and family members; and for research, to understand these issues more fully.
Recovery of Sparse Signals via Generalized Orthogonal Matching Pursuit: A New Analysis
Creators: name: Wang, Jian
name: Kwon, Suhyuk
name: Li, Ping
name: Shim, Byonghyo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: As an extension of orthogonal matching pursuit (OMP) improving the recovery performance of sparse signals, generalized OMP (gOMP) has recently been studied in the literature. In this paper, we present a new analysis of the gOMP algorithm using restricted isometry property (RIP). We show that if the measurement matrix $\mathbfΦ \in \mathcal{R}^{m \times n}$ satisfies the RIP with $$δ_{\max \left\{9, S + 1 \right\}K} \leq \frac{1}{8},$$ then gOMP performs stable reconstruction of all $K$-sparse signals $\mathbf{x} \in \mathcal{R}^n$ from the noisy measurements $\mathbf{y} = \mathbf{Φx} + \mathbf{v}$ within $\max \left\{K, \left\lfloor \frac{8K}{S} \right\rfloor \right\}$ iterations where $\mathbf{v}$ is the noise vector and $S$ is the number of indices chosen in each iteration of the gOMP algorithm. For Gaussian random measurements, our results indicate that the number of required measurements is essentially $m = \mathcal{O}(K \log \frac{n}{K})$, which is a significant improvement over the existing result $m = \mathcal{O}(K^2 \log \frac{n}{K})$, especially for large $K$.
Magnetic excitations in the helical Rashba superconductor
Creators: name: Akbari, Alireza
name: Thalmeier, Peter
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the magnetic excitation spectrum in the helical state of a noncentrosymmetric superconductor with inversion symmetry breaking and strong Rashba spin-orbit coupling. For this purpose, we derive the general expressions of the dynamical spin response functions under the presence of strong Rashba splitting of conduction bands, superconducting gap, and external field which lead to stabilization of Cooper pairs with finite overall momentum in a helical state. The latter is characterized by momentum space regions of paired and unpaired states with different quasiparticle dispersions. The magnetic response is determined by i) excitations within and between both paired and unpaired regions ii) anomalous coherence factors and iii) additional spin matrix elements due to helical Rashba spin texture of bands. We show that as a consequence typical correlated real space and spin space anisotropies appear in the dynamical susceptibility which would be observable as a characteristic fingerprint for a helical superconducting state in inelastic neutron scattering investigations.
description: 18 pages, 5 figures
Digitization of a random signal from the interference of laser pulses
Creators: name: Shakhovoy, Roman
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the study of quantum random number generators (QRNGs), the problem of random signal digitization is often not considered in detail. However, in the context of a standalone QRNG device, this issue is very important. In this paper, we consider the problem of digitizing laser pulses with random intensity and analyze various approaches used to estimate the contribution of classical noise. A simple method for determining the quantum reduction factor suitable for digitization with an analog-to-digital converter is proposed.
Minimal parameterizations for modified gravity
Creators: name: Narimani, Ali
name: Scott, Douglas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The increasing precision of cosmological data provides us with an opportunity to test general relativity (GR) on the largest accessible scales. Parameterizing modified gravity models facilitates the systematic testing of the predictions of GR, and gives a framework for detecting possible deviations from it. Several different parameterizations have already been suggested, some linked to classifications of theories, and others more empirically motivated. Here we describe a particular new approach which casts modifications to gravity through two free functions of time and scale, which are directly linked to the field equations, but also easy to confront with observational data. We compare our approach with other existing methods of parameterizing modied gravity, specifically the parameterized post-Friedmann approach and the older method using the parameter set $\{μ,γ\}$. We explain the connection between our parameters and the physics that is most important for generating cosmic microwave background anisotropies. Some qualitative features of this new parameterization, and therefore modifications to the gravitational equations of motion, are illustrated in a toy model, where the two functions are simply assumed to be constant parameters.
description: 8 pages, 7 figures, 1 table
Discriminating the Phase of a Coherent Tone with a Flux-Switchable Superconducting Circuit
Creators: name: Di Palma, Luigi
name: Miano, Alessandro
name: Mastrovito, Pasquale
name: Massarotti, Davide
name: Arzeo, Marco
name: Pepe, Giovanni Piero
name: Tafuri, Francesco
name: Mukhanov, Oleg A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We propose a new phase detection technique based on a flux-switchable superconducting circuit, the Josephson digital phase detector (JDPD), which is capable of discriminating between two phase values of a coherent input tone. When properly excited by an external flux, the JDPD is able to switch from a single-minimum to a double-minima potential and, consequently, relax in one of the two stable configurations depending on the phase sign of the input tone. The result of this operation is digitally encoded in the occupation probability of a phase particle in either of the two JDPD wells. In this work, we demonstrate the working principle of the JDPD up to a frequency of 400 MHz with a remarkable agreement with theoretical expectations. As a future scenario, we discuss the implementation of this technique to superconducting qubit readout. We also examine the JDPD compatibility with the single-flux-quantum architecture, employed to fast-drive and measure the device state.