bluuebunny/crossref_metadata_2025_split huggingface dataset:
One More Twist ~ Knowledge How and Ability
Authors: Mizumoto Masaharu 
Published: August 2019

AbstractAccording to Bengson et al.’s (2009) Salchow case, Irina is a novice skater who (1) has a mistaken belief about what amounts to a Salchow, but also (2) has a neurological abnormality which, unknowingly to her, affects both her movement and her sense of it. As a result of this twist, she (3) always ends up succeeding in jumping the Salchow whenever she tries. This story was presented as a counterexample to a variant of anti-intellectualism, and as Bengson and colleagues expected, the vast majority of participants in their survey judged both that Irina is able to do the Salchow and that she does not know how to do it. But the three conditions above leave some ambiguity about the story. That is whether Irina is aware of her own ability, or whether she is aware of what she is doing when she performs it, and therefore the fact that she can reliably perform the Salchow. However, as we report here, disambiguating this point will radically change the responses of people, which rather poses a serious challenge to intellectualism.
HENSELIAN VALUED FIELDS AND inp-MINIMALITY
Authors: CHERNIKOV ARTEM , SIMON PIERRE 
Published: August 2019

AbstractWe prove that every ultraproduct of p-adics is inp-minimal (i.e., of burden 1). More generally, we prove an Ax-Kochen type result on preservation of inp-minimality for Henselian valued fields of equicharacteristic 0 in the RV language.
The future of otology
Authors: Jackler R K , Jan T A 
Published: August 2019

AbstractBackgroundThe field of otology is increasingly at the forefront of innovation in science and medicine. The inner ear, one of the most challenging systems to study, has been rendered much more open to inquiry by recent developments in research methodology. Promising advances of potential clinical impact have occurred in recent years in biological fields such as auditory genetics, ototoxic chemoprevention and organ of Corti regeneration. The interface of the ear with digital technology to remediate hearing loss, or as a consumer device within an intelligent ecosystem of connected devices, is receiving enormous creative energy. Automation and artificial intelligence can enhance otological medical and surgical practice. Otology is poised to enter a new renaissance period, in which many previously untreatable ear diseases will yield to newly introduced therapies.ObjectiveThis paper speculates on the direction otology will take in the coming decades.ConclusionMaking predictions about the future of otology is a risky endeavour. If the predictions are found wanting, it will likely be because of unforeseen revolutionary methods.
Does surgical treatment of nasal airway obstruction improve sexual functions?
Authors: Cayir S , Hizli O , Gul M 
Published: August 2019

AbstractObjectiveTo investigate the effects of surgical treatment for nasal obstruction on sexual functions, regardless of the condition causing the nasal obstruction.MethodsOf 238 patients identified with nasal obstruction, 57 complained of erectile dysfunction and were included in the analysis. Patients underwent septoplasty, functional endoscopic sinus surgery, concha bullosa excision or radiofrequency ablation of the inferior turbinates, depending on their obstruction-causing disease. Pre- and post-operative evaluation of perceived nasal obstruction was performed using the Nasal Obstruction Symptom Evaluation questionnaire. Pre- and post-operative assessment of sexual functions was performed using the International Index of Erectile Function.ResultsMean post-operative scores for erectile function, orgasmic function, sexual desire, intercourse satisfaction and overall sexual satisfaction were significantly higher compared to the pre-operative scores (p = 0.022, p = 0.036, p = 0.033, p = 0.016 and p = 0.029, respectively).ConclusionSurgical treatment of nasal obstruction by septoplasty, endoscopic sinus surgery, concha bullosa excision or radiofrequency can significantly improve sexual performance.
Land-cover change threatens tropical forests and biodiversity in the Littoral Region, Cameroon
Authors: Mahmoud Mahmoud I. , Campbell Mason J. , Sloan Sean , Alamgir Mohammed , Laurance William F. 
Published: August 2019

AbstractTropical forest regions in equatorial Africa are threatened with degradation, deforestation and biodiversity loss as a result of land-cover change. We investigated historical land-cover dynamics in unprotected forested areas of the Littoral Region in south-western Cameroon during 1975–2017, to detect changes that may influence this important biodiversity and wildlife area. Processed Landsat imagery was used to map and monitor changes in land use and land cover. From 1975 to 2017 the area of high-value forest landscapes decreased by c. 420,000 ha, and increasing forest fragmentation caused a decline of c. 12% in the largest patch index. Conversely, disturbed vegetation, cleared areas and urban areas all expanded in extent, by 32% (c. 400,000 ha), 5.6% (c. 26,800 ha) and 6.6% (c. 78,631 ha), respectively. The greatest increase was in the area converted to oil palm plantations (c. 26,893 ha), followed by logging and land clearing (c. 34,838 ha), all of which were the major factors driving deforestation in the study area. Our findings highlight the increasing threats facing the wider Littoral Region, which includes Mount Nlonako and Ebo Forest, both of which are critical areas for regional conservation and the latter a proposed National Park and the only sizable area of intact forest in the region. Intact forest in the Littoral Region, and in particular at Ebo, merits urgent protection.
FIRST STEPS–DENTITION, KINSHIP, SOCIAL GROUPS, AND STATUS IN THE UPPER BELIZE RIVER VALLEY: SMALL SAMPLE INSIGHTS INTO CLASSIC MAYA SOCIAL ORGANIZATION IN CENTRAL WESTERN BELIZE
Authors: Blankenship-Sefczek Erin , Ball Joseph W. , Taschek Jennifer 
Published: August 2019

AbstractNonmetric (morphological) and metric analyses of dental traits and dentition are an established and effective, but still much underutilized, means of determining biological relationships among the individuals comprising a population over several generations. Combining such dental analyses, a social organizational typology adapted from social psychology, and small sample statistics, this study hazards a trial examination of the evidence for biological affinity within and between three archaeologically perceived social groups represented in the Classic-period Belize Valley community of Buenavista del Cayo. The groups comprise traditional high elite and commoner categories, and a putative middle level of intermediate elites. Findings suggest a dichotomous kinship structure of elites and non-elites, but one within which there had emerged an emically and archaeologically distinct “middle” status group of intermediate elites or subelites that remained affined by blood to the subordinate non-elite commoners and peasantry. The study differs from previous examinations of ancient Maya social organization in employing a truly integrated bioarchaeological approach to the topic rather than what have generally been intrinsically insular archaeological or osteometric approaches.
Probing Galactic Black Holes with Microlensing with Gaia and OGLE
Authors: Wyrzykowski Ł. , Rybicki K. A. , Kruszyńska K. , Gromadzki M. , Zieliski P. , Kostrzewa-Rutkowska Z. , Hodgkin S. T. 
Published: August 2019

AbstractAs shown by recent gravitational wave detections, galaxies harbour an unknown population of black holes at high masses. In our Galaxy such dark objects can be found and studied solely via gravitational microlensing methods. This paper described our search for black-hole lenses both in archived OGLE data and among on-going microlensing events found by OGLE and Gaia. That combination of superb time-domain astrometry and photometry will enable us to derive masses and distances to these dark lenses uniquely, and to describe the demographics of the unseen component of the Milky Way.
Fast Radio Transients: From Pulsars to Fast Radio Bursts
Authors: Stappers B. W. , Caleb M. , Driessen L. N. 
Published: August 2019

AbstractThe radio sky is full of transients, their time-scales ranging from nanoseconds to decades. Recent developments in technology sensitivity and computing capabilities have opened up the short end of that range, and are revealing a plethora of new phenomenologies. Studies of radio transients were previously restricted to analyses of archived data, but are now including real-time analyses. We focus here on Fast Radio Bursts, discuss and compare the properties of the population, and describe what is to date the only known repeating Fast Radio Burst and its host galaxy. We also review what will be possible with the new instrumentation coming online.
Pulsation, Rotation and Flares in A Stars
Authors: Balona L. A. 
Published: August 2019

AbstractNew observations of Kepler δ Scuti stars show that our understanding of pulsation in these stars is incomplete. A large fraction of A and B stars exhibit rotational modulation in light, suggesting that spots exist in stars with radiative envelopes. Flares are seen in some A stars, as may be expected if starspots are present. Differential rotation shear increases from M to F but decreases for A stars; it reaches a maximum among the γ Doradus variables. Current views of stars with radiative envelopes may need to be reviewed in the light of these observations.
The K2 RR Lyrae Survey
Authors: Szabó R. 
Published: August 2019

AbstractIn the framework of this project, the K2 RR Lyrae Survey, we proposed to observe thousands of RR Lyrae stars along the Ecliptic in Kepler’s K2 Mission. The high photometric precision and the 80-to-90-day continuous coverage enabled us to investigate in unprecedented detail the light variations of these variable stars which can trace galactic structure. The survey enabled us to conduct a thorough statistical study of RR Lyrae pulsation dynamics, including both old and more recently discovered dynamical phenomena such as resonances, non-radial modes, period doubling and the Blazhko effect. This talk described the K2 RR Lyrae Survey, and discussed the prospects of combining our endeavour with Gaia, LSST and other surveys in the context of studies of Galactic archeology.
Monitoring Period Variations of Variable Stars using Precise Photometric Surveys
Authors: Mikulášek Z. , Zejda M. , Hümmerich S. , Krtička J. , Bernhard K. , Paunzen E. , Skarka M. , de Villiers S. , Jagelka M. , Bakiş V. 
Published: August 2019

AbstractThe period variations of rotating, pulsating and eclipsing variable stars bear valuable astrophysical information about the presence of companions, evolutionary effects, and the inner structure of the stars. This talk described a universal method for de-trending and re-scaling precise photometric data (Kepler, MOST, CoRoT, OGLE, …) appropriate for period-change diagnostics of periodic variables. We demonstrated the potential of the method by analysing the period variability of one of the newly-identified Kepler magnetic chemically-peculiar (mCP) stars. We showed that, surprisingly, our target star displays near-sinusoidal changes in its observed light-variations, with a period of 2.85(6) years, which is apparently the result of the presence of a nearby stellar companion. The expected long-term changes of the rotational period, as have been observed in several mCP stars, have not been identified among the sample of Kepler mCP stars.
A New Population of Highly Energetic Nuclear Transients
Authors: Kankare E. , Kotak R. , Mattila S. , Lundqvist P. 
Published: August 2019

AbstractWe have identified a new population of luminous, optical, narrow-lined transients (FWHM ∼1000 km s−1) coincident with the nuclear region of Seyfert galaxies. According to extensive spectrophotometric follow-ups of the main event (PS1-10adi), we could exclude both normal active galactic nucleus activity and changing-look quasars as the origin. The integrated energy output and spectral evolution over a time-scale of several years point to two possible paths of origin: a tidal disruption of a star by a supermassive black hole, or an extremely energetic supernova occurring within the Seyfert galaxy’s narrow-line (or broad-line) region. The former model would require invoking a specific variant of a tidal disruption, while the latter would require an extremely efficient conversion of kinetic energy via shock interaction between the supernova ejecta and the dense ambient medium.
The Deeper Wider Faster Programme: Chasing the Fastest Bursts in the Universe
Authors: Andreoni I. , Cooke J. 
Published: August 2019

AbstractThe Deeper Wider Faster programme (DWF) is a project that coordinates more than 30 multi-wavelength and multi-messenger facilities worldwide and in space, in order to detect and study fast transients (durations of milliseconds to hours). DWF has four main components: (1) simultaneous observations, where ∼10 major facilities, from radio to gamma-ray, are coordinated to perform short-cadence, deep, wide-field observations of the same field at the same time. Radio telescopes search for fast radio bursts, while optical imagers and high-energy instruments search for transient events whose time-scales are seconds to hours, (2) supercomputer data processing and candidate identification in real time (seconds to minutes), along with human inspection of candidates, also in real time (minutes), using sophisticated visualisation technology, (3) rapid-response (minutes) follow-up spectroscopy and imaging, and conventional ToO observations, and (4) long-term follow up by a global network of 1-m to 4-m telescopes. The principal goals of DWF are to discover and study counterparts to fast radio bursts and gravitational-wave events, as well as transients at all wavelengths that have durations of milliseconds to hours.
X-Ray Transients Observed with MAXI
Authors: Kawai N. 
Published: August 2019

AbstractMAXI (Monitor of All-sky X-ray Image) is an astronomical mission onboard the International Space Station. It started observations in August 2009. The Gas Slit Camera of MAXI is sensitive to X-rays in the energy range 2–30 keV. Most of the sky is scanned every 90 min with the orbital revolution of the ISS. With this unbiased monitoring, MAXI has detected numerous outbursts from known and unknown X-ray sources. MAXI discovered 18 X-ray novæ in seven years, including seven neutron star binaries, six black hole binaries (+candidates) and four unidentified sources. Other results include detections of superluminous stellar flares, a super-Eddington luminous flare from a white dwarf+Be Star binary near the SMC, and monitoring of recurrent outbursts from Be neutron-star binaries. Variations in X-ray-bright AGNs such as Cen A and Mrk 421 have been also monitored. This talk presented the highlights of the MAXI observations of variable sources, including the search for X-ray counterparts of gravitational-wave events.
LMC X–4: Different Types of Long-Term Variability
Authors: Molkov S. 
Published: August 2019

AbstractThis talk presented a summary of our study of different types of long-term variability in the high-mass X-ray binary LMC X-4, by taking advantage of more than 43 years of measurements in the X-ray domain. In particular, we investigated the 30-day cycle of modulation of the X-ray emission from the source (super-orbital or precessional variability), and refined the orbital period and its first derivative. We showed that the precession period in the time-interval 1991–2015 is near its equilibrium value of Psup = 30.370 days, while the observed historical changes in the phase of this variability can be interpreted in terms of the ‘red noise’ model. We obtained an analytical law from which the precession phase can be determined to within 5% throughout the entire time-interval under consideration. Our analysis revealed for the first time that the source is displaying near-periodic variations of its spin period, on a time-scale of roughly 6.8 years, thus making LMC X-4 one of the (few) known binary systems that show remarkable long-term spin–torque reversals.
Time-Domain Instrumentation at ESO
Authors: Ivanov V. D. 
Published: August 2019

AbstractOver the years the European Southern Observatory (ESO) has offered a number of time-domain instruments that enable the user to achieve time resolution as small as milliseconds. They have been used for a wide range of applications, from binary studies with Lunar occultations, characterisation of X-ray binaries and exoplanet transits, to quasar variability. Furthermore, ESO provides a target-of-opportunity (ToO) rapid-response-mode (RRM) channel to trigger quick follow-up observations within as little delay as minutes after a transient has been detected. This talk reviewed the available time-domain observing modes and instruments at ESO, giving priority to FORS2, HAWKI and UltraCam. It described the ToO and RRM, and gave examples of the most common science cases that take advantage of those channels and capabilities.
The SALT Transient Programme
Authors: Buckley D. A. H. 
Published: August 2019

AbstractThe SALT transient follow-up programme began in 2016 and will continue for 5 semesters (until 31 Oct 2018), with an expectation of renewal thereafter. It is currently the only SALT Large Science Programme, and was awarded ~250 ksec. per semester, with a significant fraction (60%) given for the highest priority target-of-opportunity time. The aim is to characterise and study transients across a wide range of classes, currently including (from closest to most distant) cataclysmic variables, novæ and other associated eruptive variables, low- and high-mass X-ray binaries, OGLE and Gaia transients (including tidal disruption events), super-luminous and unusual core-collapse supernovæ, kilonovæ and other candidate optical counterparts to gravitational-wave events, flaring blazars and AGN, and gamma-ray bursts. This programme currently involves four SALT partners, of which South Africa is the major contributor of time (74%) and resources and includes five institutions with over 30 co-investigators. This talk reviewed the nature of the programme and highlighted some of the results to date.
High-Time-Resolution Astrophysics using the Thai 2.4-m Telescope with Ultraspec
Authors: Irawati P. 
Published: August 2019

AbstractThe Thai National Observatory (TNO) is equipped with a 2.4-m Ritchey-Chretien telescope and the high-speed versatile Ultraspec camera. The instrument employs a low-noise frame-transfer EMCCD, suitable for the observation of faint objects and for high-time-resolution astrophysics. We present some of the results obtained in the first four years of operation, focusing particularly on fast photometry of lunar and stellar occultations, and follow-up efforts on a few white-dwarf binaries. Among the latter is the polar cataclysmic variable UZ For. This system displays period changes and is suspected of hosting circumbinary planets. Our high-speed photometry data show a decreasing trend in the O–C diagram of UZ For. Using our new data set, we will investigate whether the period change in this binary is due to a possible third body, or to other mechanism(s).
The Trans-Neptunian Automated Occultation Survey (TAOS II)
Authors: Lehner M. J. , Wang S-Y. , Reyes-Ruiz M. , Zhang Z-W. , Figueroa L. , Huang C-K. , Yen W-L. , Alcock C. , Alvarez Santana F. , Castro-Chacón J. , Chen W-P. , Chu Y-H. , Cook K. H. , Geary J. C. , Hernández B. , Karr J. , Kavelaars J. J. , Norton T. , Szentgyorgyi A. 
Published: August 2019

AbstractTAOS II is a next-generation occultation survey with the goal of measuring the size distribution of the small end of the Kuiper Belt (objects with diameters 0.5–30 km). Such objects have magnitudes r > 30, and are thus undetectable by direct imaging. The project will operate three telescopes at San Pedro Mártir Observatory in Baja California, México. Each telescope will be equipped with a custom-built camera comprised of a focal-plane array of CMOS imagers. The cameras will be capable of reading out image data from 10,000 stars at a cadence of 20 Hz. The telescopes will monitor the same set of stars simultaneously to search for coincident occultation detections, thus minimising the false-positive rate. This talk described the project, and reported on the progress of the development of the survey infrastructure.
Unlocking the Universe with Astroinformatics
Authors: Lochner M. 
Published: August 2019

AbstractIn the last decade Astronomy has been transformed by a deluge of data that will grow exponentially when near-future telescopes such as LSST and the SKA begin routine observing. Astroinformatics, a broad field encompassing many techniques in statistics, machine learning and data mining, is the key to extracting meaningful information from large amounts of data. This talk outlined Astroinformatics as a field, and gave a few examples of the use of machine learning and Bayesian statistics from my own work in survey Astronomy. The era of massive surveys in which we now find ourselves has the potential to revolutionise completely many fields, including time-domain Astronomy, but only if coupled with the powerful tools of Astroinformatics.
Stellar Variability: from Citizen Science to Citizen Astronomy
Authors: Kafka S. , Griffin E. 
Published: August 2019

AbstractThe contribution of citizens to research is irrefutable. Especially this century with the outburst of all-sky surveys, professional astronomers use citizen-science projects to engage the public in analysing and sorting large quantities of data, often leading to noteworthy discoveries. From crowdsourcing to acquiring data, citizens are leaving a significant mark in the science landscape, assisting professional astronomers with their work. In turn, citizen science is a means of increasing science literacy and public understanding of science. At the same time, the time domain enables a more active engagement of backyard observers in research. Citizen astronomers not only take data, but also reduce and analyse them, and participate in preparing scientific manuscripts.
A-Type Stars as a Unique Challenge in Time-Domain Studies
Authors: Lynas-Gray A. E. , Mathys G. 
Published: August 2019

AbstractAs photometric standards, A-Type stars have proved to be extremely useful; this is particularly true of Vega, the fundamental photometric standard. However, the identification of at least some main-sequence A-type stars as small-amplitude variables, while of interest as an issue of fundamental astrophysics, needs to be understood if they are to continue to be used as photometric standards. Flaring and Rossby waves are proposed in the literature as possible explanations, as was discussed during a well-attended Workshop debate. This report summarises the discussion, and suggests future investigations.