cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hypermedia Dante Network (HDN) Ontology
Creators: name: Bartalesi, Valentina
name: Pratelli, Nicolò
name: Meghini, Carlo
name: Metilli, Daniele
name: Tomazzoli, Gaia
name: Livraghi, Leyla M G
name: Zaccarello, Michelangelo
Publisher: name: Zenodo
Year: 2021

description: Hypermedia Dante Network (HDN) is an Italian National Research Project which aims to enrich the functionalities of the DanteSources Digital Library to efficiently represent knowledge about the primary sources of Dante's Comedy. DanteSources allows users to retrieve and visualize the list and the distribution of Dante's primary sources that have been identified by recent commentaries of five of Dante's minor works. Based on the DanteSources experience, the HDN project aims to formally represent the primary sources of the Divine Comedy. To reach this goal, we restructured and extended the DanteSources ontology to provide a wider and more complete representation of the knowledge concerning the primary sources of the Comedy. In this article we present the HDN ontology. The ontology is expressed in OWL and has as reference ontologies the CIDOC CRM and its extension LRMoo. We also briefly describe the semi-automatic tool that will be used by the scholars to populate the ontology
title: Adavale Basin: 1D burial and thermal history modelling
Creators: name: T., Palu
name: T., Palu
name: R.J., Korsch
name: K., Khider
name: C., Boreham
name: D., Edwards
name: A., Bailey
Publisher: name: Commonwealth of Australia (Geoscience Australia)
Year: 2023
Subjects: subject: EFTF – Exploring for the Future
subject: AFER
subject: Adavale Basin
subject: petroleum systems modelling
subject: Devonian
subject: burial history
subject: thermal history
subject: Resource geoscience
subject: Australia's Future Energy Resources
subject: Published_External

description: The Adavale Basin is located approximately 850 km west-northwest of Brisbane and southwest of Longreach in south-central Queensland. The basin system covers approximately 100,000 km2 and represents an Early to Late Devonian (Pragian to Famennian) depositional episode, which was terminated in the Famennian by widespread contractional deformation, regional uplift and erosion. Burial and thermal history models were constructed for nine wells using existing open file data to assess the lateral variation in maturity and temperature for potential source rocks in the Adavale Basin, and to provide an estimate of the hydrocarbon generation potential in the region.
Changing the World, One Edit at a Time
Creators: name: Braisher, Tamsin
Publisher: name: Zenodo
Year: 2023
Subjects: Wikipedia
Wikidata
Thesis
Editing
Edit war
Slavery
Foulden Maar

description: Text of the keynote presentation given at Wikicon Wellington on 11 March 2023, describing my editing journey, the work I've done and what I've learned along the way.
title: Integrated geophysical modelling for salt mapping in the Polda Basin, South Australia
Creators: name: A., Feitz
name: J., Dunne
name: L., Wang
name: Y., PoudjomDjomani
name: A., Feitz
Publisher: name: Commonwealth of Australia (Geoscience Australia)
Year: 2023
Subjects: subject: EARTH SCIENCES
subject: EFTF - Exploring for the Future
subject: salt deposits
subject: geophysical modelling
subject: Polda Basin
subject: Gravity survey
subject: seismic survey
subject: Hydrogen storage
subject: salt cavern
subject: Australia's Future Energy Resources
subject: Published_External

description: The integrated use of seismic and gravity data can help to assess the potential for underground hydrogen storage in salt caverns in the offshore Polda Basin, South Australia. Geophysical integration software was trialled to perform simultaneous modelling of seismic amplitudes and traveltime information, gravity, and gravity gradients within a 2.5D cross-section. The models were calibrated to existing gravity data, seismic and well logs improving mapping of the salt thickness and depth away from well control. Models included known salt deposits in the offshore parts of the basin and assessed the feasibility for detection of potential salt deposits in the onshore basin, where there is limited well and seismic coverage. The modelling confirms that candidate salt cavern storage sites with salt thicknesses greater than 400-500 m should be detectable on low altitude airborne gravity surveys. Identification of lower cost onshore storage sites will require careful calibration of gravity models against measured data, rather than relying on the observation of rounded anomalies associated with salt diapirism. Ranking of the most prospective storage sites could be optimized after the acquisition of more detailed gravity and gradiometry data, preferably accompanied by seismic reprocessing or new seismic data acquisition.
Highly responsive UV-photodetectors based on single electrospun TiO2 nanofibres
Creators: name: Molina-Mendoza, Aday J.
name: Moya, Alicia
name: Frisenda, Riccardo
name: Svatek, Simon A.
name: Gant, Patricia
name: Gonzalez-Abad, Sergio
name: Antolin, Elisa
name: Agraït, Nicolás
name: Rubio-Bollinger, Gabino
name: de Lara, David Perez
name: Vilatela, Juan J.
name: Castellanos-Gomez, Andres
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work we study the optoelectronic properties of individual TiO2 fibres produced through coupled sol-gel and electrospinning, by depositing them onto pre-patterned Ti/Au electrodes on SiO2/Si substrates. Transport measurements in the dark give a conductivity above 2*10^-5 S, which increases up to 8*10^-5 S in vacuum. Photocurrent measurements under UV-irradiation show high sensitivity (responsivity of 90 A/W for 375 nm wavelength) and a response time to illumination of ~ 5 s, which is superior to state-of-the-art TiO2-based UV photodetectors. Both responsivity and response speed are higher in air than in vacuum, due to oxygen adsorbed on the TiO2 surface which traps photoexcited free electrons in the conduction band, thus reducing the recombination processes. The photodetectors are sensitive to light polarization, with an anisotropy ratio of 12%. These results highlight the interesting combination of large surface area and low 1D transport resistance in electrospun TiO2 fibres. The simplicity of the sol-gel/electrospinning synthesis method, combined with a fast response and high responsivity makes them attractive candidates for UV-photodetection in ambient conditions. We anticipate their high (photo) conductance is also relevant for photocatalysis and dye-sensitized solar cells.
description: 29 pages, 5 figures in the main text, 9 figures in the Supporting Information. in J. Mater. Chem. C, 2016
Herschel Observations and Updated Spectral Energy Distributions of Five Sunlike Stars with Debris Disks
Creators: name: Dodson-Robinson, Sarah E.
name: Su, Kate Y. L.
name: Bryden, Geoff
name: Harvey, Paul M.
name: Green, Joel D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations from the Herschel Space Observatory have more than doubled the number of wide debris disks orbiting Sunlike stars to include over 30 systems with R > 100 AU. Here we present new Herschel PACS and re-analyzed Spitzer MIPS photometry of five Sunlike stars with wide debris disks, from Kuiper belt size to R > 150 AU. The disk surrounding HD 105211 is well resolved, with an angular extent of >14" along the major axis, and the disks of HD 33636, HD 50554, and HD 52265 are extended beyond the PACS PSF size (50% of energy enclosed within radius 4.23"). HD 105211 also has a 24-micron infrared excess that was previously overlooked because of a poorly constrained photospheric model. Archival Spitzer IRS observations indicate that the disks have small grains of minimum radius ~3 microns, though the minimum grain gradius is larger than the radiation pressure blowout size in all systems. If modeled as single-temperature blackbodies, the disk temperatures would all be <60 K. Our radiative transfer models predict actual disk radii approximately twice the radius of model blackbody disks. We find that the Herschel photometry traces dust near the source population of planetesimals. The disk luminosities are in the range 0.00002 <= L/L* <= 0.0002, consistent with collisions in icy planetesimal belts stirred by Pluto-size dwarf planets.
description: Accepted for publication in ApJ. 18 pages, including 10 figures and 3 tables
title: Australias Onshore Basin Inventories, laying the foundation for Australias energy future
Creators: name: A., Bailey
name: A., Bailey
name: L., Carr
name: T., Palu
name: R., Korsch
Publisher: name: Commonwealth of Australia (Geoscience Australia)
Year: 2023
Subjects: subject: Onshore Basin Inventory
subject: Australia’s Future Energy Resources
subject: EFTF – Exploring for the Future
subject: Onshore Basin Inventories
subject: Onshore Basins
subject: Adavale Basin
subject: Birrindudu Basin
subject: Officer Basin
subject: Carrara Sub-basin
subject: Canning Basin
subject: Precompetitive Data
subject: seismic reprocessing
subject: petroleum systems modelling
subject: fluid inclusion stratigraphy
subject: Resource geoscience
subject: Published_External

description: Geoscience Australia’s Onshore Basin Inventories project delivers a single point of reference and creates a standardised national basin inventory that provides a whole-of-basin catalogue of geology, petroleum systems, exploration status and data coverage of hydrocarbon-prone onshore Australian sedimentary basins. In addition to summarising the current state of knowledge within each basin, the onshore basin inventory reports identify critical science questions and key exploration uncertainties that may help inform future work program planning and decision making for both government and industry. Volume 1 of the inventory covers the McArthur, South Nicholson, Georgina, Wiso, Amadeus, Warburton, Cooper and Galilee basins and Volume 2 expands this list to include the Officer, Perth and onshore Canning basins. Under Geoscience Australia’s Exploring for the Future (EFTF) program, several new onshore basin inventory reports are being delivered. Upcoming releases include the Adavale Basin of southern Queensland, and a compilation report addressing Australia’s poorly understood Mesoproterozoic basins. These are supported by value-add products that address identified data gaps and evolve regional understanding of basin evolution and prospectivity, including petroleum systems modelling, seismic reprocessing and regional geochemical studies. The Onshore Basin Inventories project continues to provide scientific and strategic direction for pre-competitive data acquisition under the EFTF work program, guiding program planning and shaping post-acquisition analysis programs.
IFU spectroscopy of 10 early-type galactic nuclei - IV. Properties of the circumnuclear stellar kinematics
Creators: name: Ricci, T. V.
name: Steiner, J. E.
name: Menezes, R. B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The study of stellar kinematic properties may provide hints on the formation and evolution of elliptical and lenticular galaxies. Although most previous studies have focused on the large scale of these galaxies, their central regions (scales of $\sim$ 100 pc) may contain important clues about their structure, such as kinematically decoupled cores. This is the fourth paper on a sample of 10 massive ($σ$ $>$ 200 km s$^{-1}$) and nearby ($d$ $
description: 18 pages, 7 figures, 2 tables, accepted for publication in MNRAS
title: Alkaline Rocks Atlas: Supporting assessment of critical mineral potential in Australia
Creators: name: E., Beyer
name: C., Bryant
name: E., Beyer
name: M., Buddee
name: D., Champion
name: L., Highet
name: C., Brown
name: M., Bonnardot
name: A., Ford
Publisher: name: Commonwealth of Australia (Geoscience Australia)
Year: 2023
Subjects: subject: EFTF – Exploring for the Future
subject: Australia’s Resources Framework
subject: Australia
subject: Alkaline rocks
subject: Critical minerals
subject: GEOLOGY
subject: Published_External

description: Alkaline igneous and related rocks are recognised as a significant source of the critical minerals essential for Australia’s transition to net-zero. Understanding these small but economically significant group of poorly mapped rocks is essential for identifying their resource potential. The Australian Alkaline Rocks Atlas aims to capture all known occurrences of these volumetrically minor, but important, igneous rocks in a national compilation, to aid understanding of their composition, distribution and age at the continental scale. The Atlas, comprises five, stand-alone data packages covering the Archean, Proterozoic, Paleozoic, Mesozoic and Cenozoic eras. Each data package includes a GIS database and detailed accompanying report that informs alkaline rock nomenclature, classification procedures, individual units and their grouping into alkaline provinces based on common age, characteristics and inferred genesis. The Alkaline Rocks Atlas will form a foundation for more expansive research on related mineral systems and their corresponding economic potential being undertaken as part of the EFTF program. To illustrate the use of the Alkaline Rocks Atlas, a mineral potential assessment using a subset of the Atlas has been undertaken for carbonatite-related rare earth element mineral systems that aims to support mineral exploration and land-use decision making that aims to support mineral exploration and land-use decision making.
H-atom addition and abstraction reactions in mixed CO, H2CO and CH3OH ices: an extended view on complex organic molecule formation
Creators: name: Chuang, K. -J.
name: Fedoseev, G.
name: Ioppolo, S.
name: van Dishoeck, E. F.
name: Linnartz, H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Complex organic molecules (COMs) have been observed not only in the hot cores surrounding low- and high- mass protostars, but also in cold dark clouds. Therefore, it is interesting to understand how such species can be formed without the presence of embedded energy sources. We present new laboratory experiments on the low-temperature solid state formation of three complex molecules: methyl formate (HC(O)OCH3), glycolaldehyde (HC(O)CH2OH) and ethylene glycol (H2C(OH)CH2OH), through recombination of free radicals formed via H-atom addition and abstraction reactions at different stages in the CO-H2CO-CH3OH hydrogenation network at 15 K. The experiments extend previous CO hydrogenation studies and aim at resembling the physical&chemical conditions typical of the CO freeze-out stage in dark molecular clouds, when H2CO and CH3OH form by recombination of accreting CO molecules and H-atoms on ice grains. We confirm that H2CO, once formed through CO hydrogenation, not only yields CH3OH through ongoing H-atom addition reactions, but is also subject to H-atom-induced abstraction reactions, yielding CO again. In a similar way, H2CO is also formed in abstraction reactions involving CH3OH. The dominant methanol H-atom abstraction product is expected to be CH2OH, while H-atom additions to H2CO should at least partially proceed through CH3O intermediate radicals. The occurrence of H-atom abstraction reactions in ice mantles leads to more reactive intermediates (HCO, CH3O and CH2OH) than previously thought, when assuming sequential H-atom addition reactions only. This enhances the probability to form COMs through radical-radical recombination without the need of UV photolysis or cosmic rays as external triggers.
description: 20 pages, 8 figures
title: Feasibility of underground hydrogen storage in a salt cavern in the Adavale Basin
Creators: name: S., Rees
name: S., Rees
name: L., Wang
name: D., Dewhurst
name: A., Feitz
Publisher: name: Commonwealth of Australia (Geoscience Australia)
Year: 2023
Subjects: subject: EARTH SCIENCES
subject: EFTF
subject: Exploring for the Future
subject: Australia's Future Energy Resources
subject: Published_External

description: The Adavale Basin, home to the Boree Salt, is a potential option for underground hydrogen storage (UHS) due to its close proximity to industrial infrastructure, existing pipelines and significant renewable energy sources. This study builds upon a previously constructed 3D geological model to examine the feasibility of developing salt caverns for UHS. The study integrates well data and regional geology, as well as analyses on mineralogy, geochemistry and petrophysical and geomechanical properties of the Boree Salt. Results highlight that the Boree Salt is predominantly halite (96.5%), with a net salt thickness of ~540 m encountered in Bury 1, and has excellent seal properties. Furthermore, the formation overburden pressure gradient implies favourable conditions for storing hydrogen in the Boree Salt. To illustrate the feasibility of UHS, a conceptual design of a cylindrical salt cavern at depth intervals of 1600 – 1950 m is presented. A single 60 m diameter cavern could provide up to 203 GWh (or ~ 6000 tonnes) of hydrogen energy storage. Further investigation to improve our understanding on the Boree Salt extent is recommended.
New Insight Into the Size Tuning of Monodispersed Colloidal Gold Obtained by Citrate Method
Creators: name: Shi, Li
name: Buhler, Eric
name: Boué, François
name: Carn, Florent
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the effect of citrate to gold molar ratio (X) on the size of citrated gold nanoparticles (AuNPs). This dependence is still a matter of debate for X $\ge$ 3 where the polydispersity is yet minimized. Indeed, there is no consensus between experiments proposed so far for comparable experimental conditions. Nonetheless, the sole available theoretical prediction has never been validated experimentally in this range of X. We show unambiguously using 3 techniques (UV-Vis spectroscopy, dynamic light scattering and transmission electronic microscopy), 2 different synthetic approaches (Direct, Inverse) and 10 X values for each approach that AuNPs' size decay as a monoexponential with X. This result is, for the first time, in agreement with the sole available theoretical prediction by Kumar et al. on the whole studied range of X.
Supernova rates from the SUDARE VST-Omegacam search II. Rates in a galaxy sample
Creators: name: Botticella, M. T.
name: Cappellaro, E.
name: Greggio, L.
name: Pignata, G.
name: Della Valle, M.
name: Grado, A.
name: Limatola, L.
name: Baruffolo, A.
name: Benetti, S.
name: Bufano, F.
name: Capaccioli, M.
name: Cascone, E.
name: Covone, G.
name: De Cicco, D.
name: Falocco, S.
name: Haeussler, B.
name: Harutyunyan, V.
name: Jarvis, M.
name: Marchetti, L.
name: Napolitano, N. R.
name: Paolillo, M.
name: Pastorello, A.
name: Radovich, M.
name: Schipani, P.
name: Tomasella, L.
name: Turatto, M.
name: Vaccari, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This is the second paper of a series in which we present measurements of the Supernova (SN) rates from the SUDARE survey. In this paper, we study the trend of the SN rates with the intrinsic colours, the star formation activity and the mass of the parent galaxies. We have considered a sample of about 130000 galaxies and a SN sample of about 50 events. We found that the SN Ia rate per unit mass is higher by a factor of six in the star-forming galaxies with respect to the passive galaxies. The SN Ia rate per unit mass is also higher in the less massive galaxies that are also younger. These results suggest a distribution of the delay times (DTD) less populated at long delay times than at short delays. The CC SN rate per unit mass is proportional to both the sSFR and the galaxy mass. The trends of the Type Ia and CC SN rates as a function of the sSFR and the galaxy mass that we observed from SUDARE data are in agreement with literature results at different redshifts. The expected number of SNe Ia is in agreement with the observed one for all four DTD models considered both in passive and star-forming galaxies so we can not discriminate between different progenitor scenarios. The expected number of CC SNe is higher than the observed one, suggesting a higher limit for the minimum progenitor mass. We also compare the expected and observed trends of the SN Ia rate with the intrinsic U - J colour of the parent galaxy, assumed as a tracer of the age distribution. While the slope of the relation between the SN Ia rate and the U - J color in star-forming galaxies can be reproduced well by all four DTD models considered, only the steepest of them is able to account for the rates and colour in star-forming and passive galaxies with the same value of the SN Ia production efficiency.
description: A& A accepted
Fully gapped superconductivity in the topological superconductor beta-PdBi2
Creators: name: Biswas, P. K.
name: Mazzone, D. G.
name: Sibille, R.
name: Pomjakushina, E.
name: Conder, K.
name: Luetkens, H.
name: Baines, C.
name: Gavilano, J. L.
name: Kenzelmann, M.
name: Amato, A.
name: Morenzoni, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The recent discovery of the topologically protected surface states in the beta-phase of PdBi2 has reignited the research interest in this class of superconductors. Here, we show results of our muon spin relaxation and rotation (muSR) measurements carried out to investigate the superconducting and magnetic properties and the topological effect in the superconducting ground state of beta-PdBi2. Zero-field muSR data reveal that no sizeable spontaneous magnetization arises with the onset of superconductivity implying that the time reversal symmetry is preserved in the superconducting state of beta-PdBi2. Further, a strong diamagnetic shift of the applied field has been observed in the transverse-field (TF) muSR experiments, indicating that any triplet-pairing channel, if present, does not dominate the superconducting condensate. Using TF-muSR, we estimate that the magnetic penetration depth is 263(10) nm at zero temperature. Temperature dependence of the magnetic penetration depth provides evidence for the existence of a nodeless single s-wave type isotropic energy gap of 0.78(1) meV at zero temperature. Our results further suggest that the topologically protected surface states have no effect on the bulk of the superconductor.
description: accepted for publication as a Rapid Communication in Physical Review B
Structure and computation of two-dimensional incompressible extended MHD
Creators: name: Grasso, D.
name: Tassi, E.
name: Abdelhamid, H. M.
name: Morrison, P. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A comprehensive study of a reduced version of Lust's equations, the extended magnetohydrodynamic (XMHD) model obtained from the two-fluid theory for electrons and ions with the enforcement of quasineutrality, is given. Starting from the Hamiltonian structure of the fully three-dimensional theory, a Hamiltonian two-dimensional incompressible four-field model is derived. In this way energy conservation along with four families of Casimir invariants are naturally obtained. The construction facilitates various limits leading to the Hamiltonian forms of Hall, inertial, and ideal MHD, with their conserved energies and Casimir invariants. Basic linear theory of the four-field model is treated, and the growth rate for collisionless reconnection is obtained. Results from nonlinear simulations of collisionless tearing are presented and interpreted using, in particular normal fields, a product of the Hamiltonian theory that gives rise to simplified equations of motion.
description: 31 pages, 8 figures
Search strategies-Side effects of typical antipsychotics. A systematic review.pdf
Creators: name: Torres González, David Antoine
name: Chamorro, Doménica
name: Carrillo, Michelle
name: Ordóñez Larrea, Mayerly Beatríz
name: León Alcívar, Sara Denisse
name: IÑIGUEZ CHALPARIZAN, MAYRA SELENA
name: Naranjo García, Justin Mateo
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 320221
subject: Psychiatry (incl. psychotherapy)

description: Typical antipsychotics, also known as first-generation antipsychotics, constitute a widely used class of medications in the treatment of psychotic disorders, such as schizophrenia. These drugs have been studied and applied for decades, and their effectiveness in relieving psychotic symptoms, such as hallucinations and delusions, has been extensively documented. The mechanism of action of typical antipsychotics lies in their ability to block dopamine receptors in the brain. Dopamine is a key neurotransmitter in the regulation of various neuronal functions and plays a central role in the manifestation of psychotic symptoms. By selectively interfering with dopamine receptors, these medications reduce dopaminergic activity in specific regions of the brain, which helps control the symptoms of psychosis. While typical antipsychotics have demonstrated their efficacy in treating psychotic symptoms, it is important to recognize that their use may also be associated with undesirable side effects. Common adverse effects include sedation, dizziness, dry mouth, and movement disorders such as tremors or muscle stiffness. Typical antipsychotics are a widely used class of medications in the treatment of psychotic disorders. Their ability to block dopamine receptors in the brain has been shown to be effective in controlling psychotic symptoms, although it is important to consider the possible associated side effects. Since each patient is unique, it is recommended to seek guidance and supervision from healthcare professionals to determine the most appropriate therapeutic option.
Gravitational Light Bending Prevents $γγ$ Absorption in Gravitational Lenses
Creators: name: Boettcher, Markus
name: Thiersen, Hannes
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The magnification effect due to gravitational lensing enhances the chances of detecting moderate-redshift ($z \sim 1$) sources in very-high-energy (VHE; $E > 100$ GeV) $γ$-rays by ground-based Atmospheric Cherenkov Telescope facilities. It has been shown in previous work that this prospect is not hampered by potential $γ-γ$ absorption effects by the intervening (lensing) galaxy, nor by any individual star within the intervening galaxy. In this paper, we expand this study to simulate the light-bending effect of a realistic ensemble of stars. We first demonstrate that, for realistic parameters of the galaxy's star field, it is extremely unlikely (probability $\lesssim 10^{-6}$) that the direct line of sight between the $γ$-ray source and the observer passes by any star in the field close enough to be subject to significant $γγ$ absorption. Our simulations then focus on the rare cases where $γγ$ absorption by (at least) one individual star might be non-negligible. We show that gravitational light bending will have the effect of avoiding the $γ-γ$ absorption spheres around massive stars in the intervening galaxy. This confirms previous results by Barnacka et al. and re-inforces arguments in favour of VHE $γ$-ray observations of lensed moderate-redshift blazars to extend the redshift range of objects detected in VHE $γ$-rays, and to probe the location of the $γ$-ray emission region in those blazars.
description: Accepted for publication in Astronomy & Astrophysics
An optically detected magnetic resonance spectrometer with tunable laser excitation and wavelength resolved infrared detection
Creators: name: Negyedi, M.
name: Palotás, J.
name: Gyüre, B.
name: Dzsaber, S.
name: Kollarics, S.
name: Rohringer, P.
name: Pichler, T.
name: Simon, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We present the development and performance of an optically detected magnetic resonance (ODMR) spectrometer. The spectrometer represents advances over similar instruments in three areas: i) the exciting light is a tunable laser source which covers much of the visible light range, ii) the optical signal is analyzed with a spectrograph, iii) the emitted light is detected in the near-infrared domain. The need to perform ODMR experiments on single-walled carbon nanotubes motivated the present development and we demonstrate the utility of the spectrometer on this material. The performance of the spectrometer is critically compared to similar instruments. The present development opens the way to perform ODMR studies on various new materials such as molecules and luminescent quantum dots where the emission is in the near-infrared range and requires a well-defined excitation wavelength and analysis of the scattered light.
description: Submitted to Rev. Sci. Instrum
Development of frequency domain multiplexing for the X-ray Integral Field Unit (X-IFU) on the Athena
Creators: name: Akamatsu, Hiroki
name: Gottardi, Luciano
name: van der Kuur, Jan
name: de Vries, Cor P.
name: Ravensberg, Kevin
name: Adams, Joseph S.
name: Bandler, Simon R.
name: Bruijn, Marcel P.
name: Chervenak, James A.
name: Kilbourne, Caroline A
name: Kiviranta, Mikko
name: Linden, A. J. van den
name: Jackson, Brian D.
name: Smith, Stephen J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We are developing the frequency domain multiplexing (FDM) read-out of transition-edge sensor (TES) microcalorimeters for the X-ray Integral Field Unit (X-IFU) instrument on board of the future European X-Ray observatory Athena. The X-IFU instrument consists of an array of $\sim$3840 TESs with a high quantum efficiency ($>$90 \%) and spectral resolution $ΔE$=2.5 eV $@$ 7 keV ($E/ΔE\sim$2800). FDM is currently the baseline readout system for the X-IFU instrument. Using high quality factor LC filters and room temperature electronics developed at SRON and low-noise two stage SQUID amplifiers provided by VTT, we have recently demonstrated good performance with the FDM readout of Mo/Au TES calorimeters with Au/Bi absorbers. An integrated noise equivalent power resolution of about 2.0 eV at 1.7 MHz has been demonstrated with a pixel from a new TES array from NASA/Goddard (GSFC-A2). We have achieved X-ray energy resolutions $\sim$2.5 eV at AC bias frequency at 1.7 MHz in the single pixel read-out. We have also demonstrated for the first time an X-ray energy resolution around 3.0 eV in a 6 pixel FDM read-out with TES array (GSFC-A1). In this paper we report on the single pixel performance of these microcalorimeters under MHz AC bias, and further results of the performance of these pixels under FDM.
description: 8 pages, 4 figures, Proceedings of the SPIE Astronomical Instrumentation "Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray"
A Spectroscopic Survey of Electronic Transitions of C$_6$H, $^{13}$C$_6$H, and C$_6$D
Creators: name: Bacalla, Xavier
name: Salumbides, Edcel J.
name: Linnartz, Harold
name: Ubachs, Wim
name: Zhao, Dongfeng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Electronic spectra of C$_6$H are measured in the $18\,950-21\,100$ cm$^{-1}$ domain using cavity ring-down spectroscopy of a supersonically expanding hydrocarbon plasma. In total, 19 (sub)bands of C$_6$H are presented, all probing the vibrational manifold of the B$^2Π$ electronically excited state. The assignments are guided by electronic spectra available from matrix isolation work, isotopic substitution experiments (yielding also spectra for $^{13}$C$_6$H and C$_6$D), predictions from ab initio calculations as well as rotational fitting and vibrational contour simulations using the available ground state parameters as obtained from microwave experiments. Besides the $0_0^0$ origin band, three non-degenerate stretching vibrations along the linear backbone of the C$_6$H molecule are assigned: the $ν_6$ mode associated with the C-C bond vibration and the $ν_4$ and $ν_3$ modes associated with C$\equiv$C triple bonds. For the two lowest $ν_{11}$ and $ν_{10}$ bending modes, a Renner-Teller analysis is performed identifying the $μ^2Σ$($ν_{11}$) and both $μ^2Σ$($ν_{10}$) and $κ^2Σ$($ν_{10}$) components. In addition, two higher lying bending modes are observed, which are tentatively assigned as $μ^2Σ$($ν_9$) and $μ^2Σ$($ν_8$) levels. In the excitation region below the first non-degenerate vibration ($ν_6$), some $^2Π-^{2}Π$ transitions are observed that are assigned as even combination modes of low-lying bending vibrations. The same holds for a $^2Π-^{2}Π$ transition found above the $ν_6$ level. From these spectroscopic data and the vibronic analysis a comprehensive energy level diagram for the B$^2Π$ state of C$_6$H is derived and presented.
description: Accepted for publication in The Journal of Physical Chemistry A (26 July 2016)
Linear and anomalous front propagation in system with non Gaussian diffusion: the importance of tails
Creators: name: Serva, Maurizio
name: Vergni, Davide
name: Vulpiani, Angelo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate front propagation in systems with diffusive and sub-diffusive behavior. The scaling behavior of moments of the diffusive problem, both in the standard and in the anomalous cases, is not enough to determine the features of the reactive front. In fact, the shape of the bulk of the probability distribution of the transport process, which determines the diffusive properties, is important just for pre-asymptotic behavior of front propagation, while the precise shape of the tails of the probability distribution determines asymptotic behavior of front propagation.
description: 7 pages, 3 figures
Parallax of a Mira variable R Ursae Majoris studied with astrometric VLBI
Creators: name: Nakagawa, Akiharu
name: Kurayama, Tomoharu
name: Matsui, Makoto
name: Omodaka, Toshihiro
name: Honma, Mareki
name: Shibata, Katsunori M
name: Sato, Katsuhisa
name: Jike, Takaaki
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have measured an annual parallax of the Mira variable R~Ursae~Majoris (R~UMa) with the VLBI exploration for Radio Astronomy (VERA). From the monitoring VLBI observations spanning about two years, we detected H$_2$O maser spots in the LSR velocities ranges from 37 to 42 km\,s$^{-1}$. We derived an annual parallax of 1.97$\pm$0.05\,mas, and it gives a corresponding distance of 508$\pm$13\,pc. The VLBI maps revealed 72 maser spots distributed in $\sim$110 au area around an expected stellar position. Circumstellar kinematics of the maser spots were also revealed by subtracting a systemic motion in the Hipparcos catalog from proper motions of each maser spots derived from our VLBI observations. Infrared photometry is also conducted to measure a $K$ band apparent magnitude, and we obtained a mean magnitude of $m_K$ = 1.19$\pm$0.02\,mag. Using the trigonometric distance, the $m_K$ is converted to a $K$ band absolute magnitude of $M_K = -$7.34$\pm$0.06\,mag. This result gives a much more accurate absolute magnitude of R~UMa than previously provided. We solved a zero-point of $M_K - \log P$ relation for the Galactic Mira variables and obtained a relation of $M_K = -$3.52 $\log P$ + (1.09 $\pm$ 0.14). Other long period variables including red supergiants, whose distances were determined from astrometric VLBI, were also compiled to explore the different sequences of $M_K - \log P$ relation.
description: 9 figure
Electromagnetic Effects on Cracking of Anisotropic Polytropes
Creators: name: Sharif, M.
name: Sadiq, Sobia
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we study the electromagnetic effects on stability of spherically symmetric anisotropic fluid distribution satisfying two polytropic equations of state and construct the corresponding generalized Tolman Oppenheimer Volkoff equations. We apply perturbations on matter variables via polytropic constant as well as polytropic index and formulate the force distribution function. It is found that the compact object is stable for feasible choice of perturbed polytropic index in the presence of charge.
description: 16 pages, 3 figures, to appear in EPJC
Counterion-Induced Swelling of Ionic Microgels
Creators: name: Denton, Alan R.
name: Tang, Qiyun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Ionic microgel particles, when dispersed in a solvent, swell to equilibrium sizes that are governed by a balance between electrostatic and elastic forces. Tuning of particle size by varying external stimuli, such as $p$H, salt concentration, and temperature, has relevance for drug delivery, microfluidics, and filtration. To model swelling of ionic microgels, we derive a statistical mechanical theorem, which proves exact within the cell model, for the electrostatic contribution to the osmotic pressure inside a permeable colloidal macroion. Applying the theorem, we demonstrate how the distribution of counterions within an ionic microgel determines the internal osmotic pressure. By combining the electrostatic pressure, which we compute via both Poisson-Boltzmann theory and molecular dynamics simulation, with the elastic pressure, modeled via the Flory-Rehner theory of swollen polymer networks, we show how deswelling of ionic microgels with increasing concentration of particles can result from a redistribution of counterions that reduces electrostatic pressure. A linearized approximation for the electrostatic pressure, which proves remarkably accurate, provides physical insight and greatly eases numerical calculations for practical applications. Comparing with experiments, we explain why soft particles in deionized suspensions deswell upon increasing concentration and why this effect may be suppressed at higher ionic strength. The failure of the uniform ideal-gas approximation to adequately account for counterion-induced deswelling below close packing of microgels is attributed to neglect of spatial variation of the counterion density profile and the electrostatic pressure of incompletely neutralized macroions.
description: 11 pages, 7 figures
Adaptive mixed norm optical flow estimation
Creators: name: Estrela, Vania V.
name: Franz, Matthias O.
name: Lopes, Ricardo T.
name: De Araujo, G. P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The pel-recursive computation of 2-D optical flow has been extensively studied in computer vision to estimate motion from image sequences, but it still raises a wealth of issues, such as the treatment of outliers, motion discontinuities and occlusion. It relies on spatio-temporal brightness variations due to motion. Our proposed adaptive regularized approach deals with these issues within a common framework. It relies on the use of a data-driven technique called Mixed Norm (MN) to estimate the best motion vector for a given pixel. In our model, various types of noise can be handled, representing different sources of error. The motion vector estimation takes into consideration local image properties and it results from the minimization of a mixed norm functional with a regularization parameter depending on the kurtosis. This parameter determines the relative importance of the fourth norm and makes the functional convex. The main advantage of the developed procedure is that no knowledge of the noise distribution is necessary. Experiments indicate that this approach provides robust estimates of the optical flow.
description: 8 pages, 4 figures. arXiv admin note: text overlap with arXiv:1403.7365
Hidden Fermi-liquid charge transport in the antiferromagnetic phase of the electron-doped cuprates
Creators: name: Li, Yangmu
name: Tabis, W.
name: Yu, G.
name: Barišić, N.
name: Greven, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Systematic analysis of the planar resistivity, Hall effect and cotangent of the Hall angle for the electron-doped cuprates reveals underlying Fermi-liquid behavior even deep in the antiferromagnetic part of the phase diagram. The transport scattering rate exhibits a quadratic temperature dependence, and is nearly independent of doping, compound and carrier type (electrons vs. holes), and hence universal. Our analysis moreover indicates that the material-specific resistivity upturn at low temperatures and low doping has the same origin in both electron- and hole-doped cuprates.
description: To appear in PRL
Unique magnetic structure of YbCo$_2$Si$_2$
Creators: name: Mufti, N.
name: Kaneko, K.
name: Hoser, A.
name: Gutmann, M.
name: Geibel, C.
name: Krellner, C.
name: Stockert, O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on the results of powder and single crystal neutron diffraction to investigate the magnetic order in YbCo$_2$Si$_2$ below the Néel temperature $T_{\rm N} = 1.7~$K in detail. Two different magnetically ordered phases can clearly be distinguished. At lowest temperatures a commensurate magnetic structure with a propagation vector ${\bf k}_1 = (0.25~ 0.25~ 1)$ is found, while the intermediate phase ($T > 0.9~$K) is characterized by an incommensurate magnetic structure with ${\bf k}_2 = (0.25~ 0.086~ 1)$. The magnetic structure in YbCo$_2$Si$_2$ is in marked contrast to all other known RCo$_2$Si$_2$ compounds (R = rare earth element) likely due to some itineracy of the Yb 4f states being responsible for the magnetism.
description: 9 pages, 7 figures, accepted for publication in Phys. Rev. B
Le  chasseur de chamois : Extrait du recueil des Ranz des Vaches : [für eine Singstimme mit Klavierbegleitung]
Creators: name: Huber, Ferdinand Fürchtegott
Publisher: name: Bourgdorfer
Year: 1826

description: Chanson de J. Théophile Kuhn ; mise en musique par Ferd. Huber et traduit en français par R. W. ; [mit Titelvign. von G. Lori père]
description: Originaltitel: Der Gemsjäger
Multitask Protein Function Prediction Through Task Dissimilarity
Creators: name: Frasca, Marco
name: Bianchi, Nicolò Cesa
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences
subject: I.5; J.3
subject: 68Q01

description: Automated protein function prediction is a challenging problem with distinctive features, such as the hierarchical organization of protein functions and the scarcity of annotated proteins for most biological functions. We propose a multitask learning algorithm addressing both issues. Unlike standard multitask algorithms, which use task (protein functions) similarity information as a bias to speed up learning, we show that dissimilarity information enforces separation of rare class labels from frequent class labels, and for this reason is better suited for solving unbalanced protein function prediction problems. We support our claim by showing that a multitask extension of the label propagation algorithm empirically works best when the task relatedness information is represented using a dissimilarity matrix as opposed to a similarity matrix. Moreover, the experimental comparison carried out on three model organism shows that our method has a more stable performance in both "protein-centric" and "function-centric" evaluation settings.
description: 12 pages, 5 figures
Identifying the ejected population from disintegrating multiple systems
Creators: name: Yip, A. K. P.
name: Pinfield, D. J.
name: Kurtev, R.
name: Gromadzki, M.
name: Marocco, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Kinematic studies of the Hipparcos catalogue have revealed associations that are best explained as disintegrating multiple systems, presumably resulting from a dynamical encounter between single/multiple systems in the field (Li et al. 2009). In this work we explore the possibility that known ultra-cool dwarfs may be components of disintegrating multiple systems, and consider the implications for the properties of these objects. We will present here the methods/techniques that can be used to search for and identify disintegrating benchmark systems in three database/catalogues: Dwarf Archive, the Hipparcos Main Catalogue, and the Gliese-Jahreiß Catalogue. Placing distance constraints on objects with parallax or colour-magnitude information from spectrophotometry allowed us to identify common distance associations. Proper motion measurements allowed us to separate common proper motion multiples from our sample of disintegrating candidates. Moreover, proper motion and positional information allowed us to select candidate systems based on relative component positions that were tracked back and projected forward through time. Using this method we identified one candidate disintegrating quadruple association, and two candidate disintegrating binaries, all of them containing one ultra-cool dwarf.
description: 5 pages, 1 figure, proceeding of The 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
title: AI for time-resolved imaging: from fluorescence lifetime to single-pixel time of flight
Creators: name: Kapitány, Valentin
Publisher: name: University of Glasgow
Year: 2023

description: Time-resolved imaging is a field of optics which measures the arrival time of light on the camera. This thesis looks at two time-resolved imaging modalities: fluorescence lifetime imaging and time-of-flight measurement for depth imaging and ranging. Both of these applications require temporal accuracy on the order of pico- or nanosecond (10−12 − 10−9s) scales. This demands special camera technology and optics that can sample light-intensity extremely quickly, much faster than an ordinary video camera. However, such detectors can be very expensive compared to regular cameras while offering lower image quality. Further, information of interest is often hidden (encoded) in the raw temporal data. Therefore, computational imaging algorithms are used to enhance, analyse and extract information from time-resolved images. "A picture is worth a thousand words". This describes a fundamental blessing and curse of image analysis: images contain extreme amounts of data. Consequently, it is very difficult to design algorithms that encompass all the possible pixel permutations and combinations that can encode this information. Fortunately, the rise of AI and machine learning (ML) allow us to instead create algorithms in a data-driven way. This thesis demonstrates the application of ML to time-resolved imaging tasks, ranging from parameter estimation in noisy data and decoding of overlapping information, through super-resolution, to inferring 3D information from 1D (temporal) data.