bluuebunny/crossref_metadata_2025_split huggingface dataset:
L'utilisation des réserves hydrauliques karstiques : l'exemple de la commune de Penne de Tarn
Authors: Bou Claude 
Published: November 2018

La réalisation des captages dans la commune de Penne devait permettre une alternative aux ressources insuffisantes et polluées des aquifères du Lias marno-calcaire, par une exploitation rationnelle des réserves karstiques des causses jurassiques. De fait trois ruisseaux souterrains assurent actuellement une alimentation de bonne qualité, sans restrictions estivales, de la totalité du vaste territoire communal. Les travaux de génie civil, les installations électro-mécaniques, les aménagements faisant suite aux études préliminaires, ont été réalisés par les spéléologues bénévoles de plusieurs clubs du Comité Départemental de Spéléologie regroupés dans l'Association Tarnaise d'Études Karstiques (A.T.E.K.).
Les trois sites ont fait l'objet de méthodes et de techniques différentes de captage. Il s'agit :
-du ruisseau souterrain de Cabéou avec la construction d'un barrage réservoir de 500 m3, mis en service en 1984 sur le Causse de la Garrigue ;
-du ruisseau souterrain d'Amiel, où un puits artificiel traversant 25 m de rocher alimente le village depuis 1985 ;
-et enfin du ruisseau souterrain de la Madeleine, avec une station de pompage munie d'un barrage protecteur, renforçant la ressource de la rive droite de l'Aveyron depuis 1989.
Measuring the Recoverability of Close Binaries in Gaia DR2 with the Robo-AO Kepler Survey
Authors: Ziegler Carl , Law Nicholas M. , Baranec Christoph , Morton Tim , Riddle Reed , De Lee Nathan , Huber Daniel , Mahadevan Suvrath , Pepper Joshua 
Published: November 2018

Abstract
We use the Robo-AO survey of Kepler planetary candidate host stars, the largest adaptive optics survey yet performed, to measure the recovery rate of close stellar binaries in Gaia DR2. We find that Gaia recovers binaries down to 1″ at magnitude contrasts as large as six; closer systems are not resolved, regardless of secondary brightness. Gaia DR2 binary detection does not have a strong dependence on the orientation of the stellar pairs. We find 177 nearby stars to Kepler planetary candidate host stars in Gaia DR2 that were not detected in the Robo-AO survey, almost all of which are faint (G > 20); the remainder were largely targets observed by Robo-AO in poor conditions. If the primary star is the host, the impact on the radii estimates of planet candidates in these systems is likely minimal; many of these faint stars, however, could be faint eclipsing binaries that are the source of a false positive planetary transit signal. With Robo-AO and Gaia combined, we find that 18.7 ± 0.7% of Kepler planet candidate hosts have nearby stars within 4″. We also find 36 nearby stars in Gaia DR2 around 35 planetary candidate host stars detected with K2. The nearby star fraction rate for K2 planetary candidates is significantly lower than that for the primary Kepler mission. The binary recovery rate of Gaia will improve initial radius estimates of future Transiting Exoplanet Survey Satellite planet candidates significantly; however, ground-based high-resolution follow-up observations are still needed for precise characterization and confirmation. The sensitivity of Gaia to closely separated binaries is expected to improve in later data releases.
Comet C/2013 V5 (Oukaimeden): Evidence for Depleted Organic Volatiles and Compositional Heterogeneity as Revealed through Infrared Spectroscopy
Authors: DiSanti Michael A. , Bonev Boncho P. , Gibb Erika L. , Roth Nathan X. , Russo Neil Dello , Vervack, Jr. Ronald J. 
Published: November 2018

Abstract
We obtained high-resolution (λ/Δλ ∼ 25,000) pre-perihelion spectra of Comet C/2013 V5 (Oukaimeden) using NIRSPEC at Keck II on UT 2014 September 5–6, and CSHELL at the NASA-Infrared Telescope Facility on September 11–13, altogether spanning a range in heliocentric distance R
h = 0.789–0.698 au. We report water production rates, and production rates and abundance ratios relative to co-measured H2O for eight trace molecules: CO, H2CO, CH3OH, CH4, C2H2, C2H6, HCN, and NH3. Our measured water production rates from NIRSPEC and CSHELL observations remained relatively constant and were close to those from SOHO/Solar Wind ANisotropies observations that encompassed our dates, suggesting H2O production dominated by release directly from or within approximately 2000 km of the nucleus. All trace volatiles were depleted relative to their respective median abundances among comets, excepting NH3, which was consistent with its median abundance. Most surprising were pronounced increases in abundance ratios for CH3OH (by 51% relative to simultaneously measured H2O) and especially C2H6 (by 87%) between September 5 and 6. On September 5, C2H6 was severely depleted, consistent with its lowest abundance yet measured for any comet. It also tracked the spatial profile of H2O, suggesting C2H6 was associated with a polar ice phase dominating gas production. On September 6, C2H6 was only moderately depleted and was spatially distinct from H2O, suggesting both polar- and nonpolar-dominated ice phases contributed to the activity then. Our results are consistent with a nonhomogeneous volatile composition for C/2013 V5, implying differential processing of its constituent ices.
Simulating the M–R Relation from APF Follow-up of TESS Targets: Survey Design and Strategies for Overcoming Mass Biases
Authors: Burt Jennifer , Holden Brad , Wolfgang Angie , Bouma L. G. 
Published: November 2018

Abstract
We present simulations of multi-year radial velocity (RV) follow-up campaigns of the TESS exoplanet yield on the Automated Planet Finder telescope, using four different schemes to sample the transiting planets’ RV phase curves. For planets below roughly 10 M
⊕, we see a systematic bias of measured masses that are higher than the true planet mass, regardless of the observing scheme used. This produces a statistically significant difference in the mass–radius relation we recover, where planet masses are predicted to be too high and too similar across the entire super-Earth to Neptune radius range. This bias is due in part to only reporting masses that are measured with high statistical significance. Incorporating all mass measurements, even those that are essentially only upper limits, significantly mitigates this bias. We also find statistically significant differences between the mean number of planets measured at the 1-, 3-, and 5σ
K level by the different prioritization schemes. Our results show that prioritization schemes which more evenly sample the RV phase curves produce a larger number of significant mass detections. The scheme that aims to most uniformly sample the phase curve performs best, followed closely by the scheme that randomly samples, and then an in-quadrature sampling approach. The fourth scheme, out of quadrature, performs noticeably worse. These results have important implications for determining accurate planet compositions and for designing effective RV follow-up campaigns in the era of large planet detection surveys such as K2, TESS, and PLATO.
Statistical Trends in the Obliquity Distribution of Exoplanet Systems
Authors: Muñoz Diego J. , Perets Hagai B. 
Published: November 2018

Abstract
Important clues to the formation and evolution of planetary systems can be inferred from the stellar obliquity ψ. We study the distribution of obliquities using the California-Kepler Survey and the TEPCat Catalog of Rossiter–McLaughlin (RM) measurements, from which we extract, respectively, 275 and 118 targets. We infer a “best fit” obliquity distribution in ψ with a single parameter κ. Large values of κ imply that ψ is distributed narrowly around zero, while small values imply approximate isotropy. Our findings are as follows. (1) The distribution of ψ in Kepler systems is narrower than found by previous studies and consistent with κ ∼ 15 (mean

and spread ψ ∼ 10°). (2) The value of κ in Kepler systems does not depend, at a statistically significant level, on planet multiplicity, stellar multiplicity, or stellar age; on the other hand, metal-rich hosts, small-planet hosts, and long-period planet hosts tend to be more oblique than the general sample (at a ∼2.5σ significance level). (3) The obliquities of Hot Jupiter (HJ) systems with RM measurements are consistent with κ ∼ 2, which corresponds to a broader distribution than for the general Kepler population. (4) A separation of the RM sample into cooler (T
eff ≲ 6250 K) and hotter (T
eff ≳ 6250 K) HJ hosts results in two distinct distributions, κ
cooler ∼ 4 and κ
hotter ∼ 1 (4σ significance), both more oblique than the Kepler sample. We hypothesize that the total mass in planets may be behind the increasing obliquity with metallicity and planet radius, and that the dependence on period could be due to primordial disk alignment rather than tidal realignment of stellar spin.
Efficient Spectroscopy of Exoplanets at Small Angular Separations with Vortex Fiber Nulling
Authors: Ruane Garreth , Wang Ji , Mawet Dimitri , Jovanovic Nemanja , Delorme Jacques-Robert , Mennesson Bertrand , Wallace J. Kent 
Published: November 2018

Abstract
Instrumentation designed to characterize potentially habitable planets may combine adaptive optics and high-resolution spectroscopy techniques to achieve the highest possible sensitivity to spectral signs of life. Detecting the weak signal from a planet containing biomarkers will require exquisite control of the optical wavefront to maximize the planet signal and significantly reduce unwanted starlight. We present an optical technique, known as vortex fiber nulling (VFN), that allows polychromatic light from faint planets at extremely small separations from their host stars (≲λ/D) to be efficiently routed to a diffraction-limited spectrograph via a single-mode optical fiber, while light from the star is prevented from entering the spectrograph. VFN takes advantage of the spatial selectivity of a single-mode fiber to isolate the light from close-in companions in a small field of view around the star. We provide theoretical performance predictions of a conceptual design and show that VFN may be utilized to characterize planets detected by radial velocity (RV) instruments in the infrared without knowledge of the azimuthal orientation of their orbits. Using a spectral template-matching technique, we calculate an integration time of ∼400, ∼100, and ∼30 hr for Ross 128 b with Keck, the Thirty Meter Telescope, and the Large Ultraviolet/Optical/Infrared Surveyor, respectively.
Outflow and Emission Model of Pulsar Wind Nebulae with the Back Reaction of Particle Diffusion
Authors: Ishizaki Wataru , Asano Katsuaki , Kawaguchi Kyohei 
Published: November 2018

Abstract
We present a new pulsar wind nebula (PWN) model that solves both advection and diffusion of nonthermal particles in a self-consistent way to satisfy the momentum and energy conservation laws. Assuming spherically symmetric (1D) steady outflow, we calculate the emission spectrum integrating over the entire nebula and the radial profile of the surface brightness. We find that the back reaction of the particle diffusion modifies the flow profile. The photon spectrum and the surface brightness profile are different from the model calculations without the back reaction of the particle diffusion. Our model is applied to the two well-studied PWNe, 3C 58 and G21.5-0.9. By fitting the spectra of these PWNe, we determine the parameter sets and calculate the radial profiles of X-ray surface brightness. For both the objects, obtained profiles of X-ray surface brightness and the photon index are well consistent with observations. Our model suggests that particles that have escaped from the nebula significantly contribute to the γ-ray flux. A γ-ray halo larger than the radio nebula is predicted in our model.
Interstellar Matters: Neutral Hydrogen and the Galactic Magnetic Field
Authors: Verschuur G. L. , Schmelz J. T. , Asgari-Targhi M. 
Published: November 2018

Abstract
A very long and nearly straight H i filament at about −60 km s−1 in the southern Galactic hemisphere, seen nearly normal to the line of sight and well separated from low-velocity gas, has been studied in several ways in order to understand its physics, structure, and morphology. Gaussian analysis of 1800 profiles and examination of 140 declination–velocity cross sections shows that an underlying H i component, which is at least 15° long and about 1° wide, has a typical line width of 21 km s−1. It does not appear to be in thermal pressure equilibrium with its surroundings; rather, it may be confined by a magnetic field of 18 μG. Narrow, elongated features (threads), probably unresolved in the 4′ H i observations, have been identified within the boundaries of the filament. In general, each of these threads has two emission components, with line widths of the order of 8 and 3 km s−1, which may wind around each other. Analysis suggests that these cooler components have an average density of 29 cm−3 and may be confined by a magnetic field of 5 μG. These results, taken together, can be explained if this southern filament has magnetic substructure.
Infrared Spectra and Interstellar Sulfur: New Laboratory Results for H2S and Four Malodorous Thiol Ices
Authors: Hudson Reggie L. , Gerakines Perry A. 
Published: November 2018

Abstract
New infrared spectra are presented for H2S and four other sulfur-containing compounds, all thiols, at 10–140 K to aid in the study of interstellar and solar system ices. Infrared spectral changes on warming H2S and each thiol are described with an emphasis on the S–H stretching vibration at 2550–2525 cm−1 (λ = 3.92–3.96 μm) as it is in a relatively unobscured part of the infrared spectra of interstellar and planetary ices. Infrared positions and band strengths for each thiol’s S–H and C–H stretching vibrations are reported, along with the S–H band strength of H2S. Two band strengths of near-infrared features of CH3SH are included. Results for these compounds are compared, and some areas of agreement and disagreement with the literature are described.
High-density Off-limb Flare Loops Observed by SDO
Authors: Jejčič S. , Kleint L. , Heinzel P. 
Published: November 2018

Abstract
The density distribution of flare loops and the mechanisms of their emission in the continuum are still open questions. On 2017 September 10, a prominent loop system appeared during the gradual phase of an X8.2 flare (SOL2017-09-10), visible in all passbands of SDO/AIA and in the white-light continuum of SDO/HMI. We investigate its electron density by taking into account all radiation processes in the flare loops, i.e., the Thomson continuum, hydrogen Paschen and Brackett recombination continua, as well as free–free continuum emission. We derive a quadratic function of the electron density for a given temperature and effective loop thickness. By absolutely calibrating SDO/HMI intensities, we convert the measured intensities into electron density at each pixel in the loops. For a grid of plausible temperatures between cool (6000 K) and hot (106 K) structures, the electron density is computed for representative effective thicknesses between 200 and 20,000 km. We obtain a relatively high maximum electron density, about 1013 cm−3. At such high electron densities, the Thomson continuum is negligible and therefore one would not expect a significant polarization degree in dense loops. We conclude that the Paschen and Brackett recombination continua are dominant in cool flare loops, while the free–free continuum emission is dominant for warmer and hot loops.
« Les burnout » de l’individuel au contextuel
Authors: Neuburger Robert 
Published: November 2018

Toute société demande à ses membres de rester sains, mais s’ils doivent aller mal, ils doivent l’exprimer sur un mode normalisé. Les conventions récentes étaient d’exprimer son mal-être et ses souffrances psychiques en se plaçant essentiellement dans le cadre de la « dépression ». Un nouveau cadre se profile et s’affirme : se déclarer en « burnout ». Ce terme qui couvrait au départ les états d’épuisement professionnels dans les professions d’aide s’est étendu y compris dans des situations non professionnelles puisque l’on parle aujourd’hui de burnout parental, maternel... Mais cette extension du terme recouvre des situations variées. Y a-t-il un facteur commun ? Y a-t-il plusieurs “burnout” ? Comment prendre en charge ces situations sans pathologiser ni banaliser ?
Reviews and syntheses: the GESAMP atmospheric iron deposition model intercomparison study
Authors: Myriokefalitakis Stelios , Ito Akinori , Kanakidou Maria , Nenes Athanasios , Krol Maarten C. , Mahowald Natalie M. , Scanza Rachel A. , Hamilton Douglas S. , Johnson Matthew S. , Meskhidze Nicholas , Kok Jasper F. , Guieu Cecile , Baker Alex R. , Jickells Timothy D. , Sarin Manmohan M. , Bikkina Srinivas , Shelley Rachel , Bowie Andrew , Perron Morgane M. G. , Duce Robert A. 
Published: November 2018

Abstract. This work reports on the current status of the global modeling of iron (Fe)
deposition fluxes and atmospheric concentrations and the analyses of the
differences between models, as well as between models and observations. A
total of four global 3-D chemistry transport (CTMs) and general circulation
(GCMs) models participated in this intercomparison, in the framework of
the United Nations Joint Group of Experts on the Scientific Aspects of Marine
Environmental Protection (GESAMP) Working Group 38, “The Atmospheric Input
of Chemicals to the Ocean”. The global total Fe (TFe) emission strength in
the models is equal to ∼72 Tg Fe yr−1 (38–134 Tg Fe yr−1)
from mineral dust sources and around 2.1 Tg Fe yr−1 (1.8–2.7 Tg Fe yr−1)
from combustion processes (the sum of anthropogenic
combustion/biomass burning and wildfires). The mean global labile Fe (LFe)
source strength in the models, considering both the primary emissions and the
atmospheric processing, is calculated to be 0.7 (±0.3) Tg Fe yr−1,
accounting for both mineral dust and combustion aerosols. The
mean global deposition fluxes into the global ocean are estimated to be in the range
of 10–30 and 0.2–0.4 Tg Fe yr−1 for TFe and LFe, respectively,
which roughly corresponds to a respective 15 and 0.3 Tg Fe yr−1 for the multi-model ensemble model mean. The model intercomparison analysis indicates that the representation of the
atmospheric Fe cycle varies among models, in terms of both the magnitude of
natural and combustion Fe emissions as well as the complexity of atmospheric
processing parameterizations of Fe-containing aerosols. The model comparison
with aerosol Fe observations over oceanic regions indicates that most models
overestimate surface level TFe mass concentrations near dust source
regions and tend to underestimate the low concentrations observed in remote
ocean regions. All models are able to simulate the tendency of higher Fe
concentrations near and downwind from the dust source regions, with the mean
normalized bias for the Northern Hemisphere (∼14), larger
than that of the Southern Hemisphere (∼2.4) for the ensemble model
mean. This model intercomparison and model–observation comparison study
reveals two critical issues in LFe simulations that require further
exploration: (1) the Fe-containing aerosol size distribution and (2) the
relative contribution of dust and combustion sources of Fe to labile Fe in
atmospheric aerosols over the remote oceanic regions.
De maatschappelijke integratie van de politie
Authors: van Duijneveldt Ivo 
Published: November 2018

The social integration of the police. Opinions of Police Chiefs on a loaded topic
Since the 1970s social integration of the police has been considered as a key element of the Dutch police. This article focusses on the question of the relevance of social integration of the contemporary police. The article is based on interviews with present and former strategic leaders of the Dutch police. This study shows that social integration is still often considered to be a highly important value for the Dutch police, particularly with regard to the growing polarisation in society. However, some of the police chiefs also express their disapproval of the concept of social integration; in their view the concept reminds us of the past. Also, police chiefs are critical of the value of the concept because of its supposed geographical focus. The paper shows that this criticism can be understood as an interpretation of social integration in terms of ‘neighbourhood policing’ and as an operational police strategy.
ULOGA KOMPJUTERIZOVANOG RAČUNOVODSTVENOG INFORMACIONOG SISTEMA U OTKRIVANJU RAČUNOVODSTVENIH GREŠAKA I PREVARA
Authors: Ilić Milena , Anđelić Svetlana 
Published: November 2018

U poslovnim organizacijama važnu ulogu igra računovodstveni informacioni sistem, koji crpe podatke i informacije od drugih informacionih sistema, ali jednako i deli svoje podatke i informacije sa drugima. Rad prikazuje ulogu jednog takvog sistema u sprečavanju nastanka nenamernih računovodstvenih grešaka, u obezbeđenju i analizi podataka za interne i eksterne korisnike na osnovu kojih će nenamerne računovodstvene greške biti uočljive, odnosno namerni pokušaji računovodstvenih prevara dokumentovani i prepoznati. Pored softvera, hardvera i telekomunikacija kao sastavnih delova kompjuterizovanog računovodstvenog informacionog sistema, važnu ulogu u detekciji grešaka i pokušaja prevarnih radnji u računovodstvu, igraju upravo ljudski resursi. Od presudne je važnosti visok stepen poznavanja računovodstvene teorije i prakse, propisa i načela, ali i etičnost ljudi kao elementa računovodstvenog informacionog sistema kao i korisnika dobijenih informacija. Problem istraživanja rada je uloga kompjuterizovanih informacionih sistema u sprečavanju nastanka računovodstvenih grešaka i lakšoj detekciji namernih prevarnih aktova. Istraživanje autora se bazira na pregledu dostupne literature koja se odnosi na informacione sisteme i računovodstvenu praksu, prikupljanju podataka o problemu istraživanja i diskusiji o pronađenim činjenicama.
КОНЦЕПТ ПРИМАРНЕ ПОЉОПРИВРЕДНЕ ПРОИЗВОДЊЕ И ПРЕРАДЕ У ГРАДСКОМ ПОДРУЧЈУ НИША
Authors: Novaković Igor 
Published: November 2018

Примарна пољопривредна производња и поред тога што је битан чинилац укупне наионалне економије, показије недовољну искоришћеност постојећих капацитета и природне базе. Циљ овог рада је да представимо концепт примарне пољопривредне производње и прераде у градском подручју Ниша, а који ће омогућити организовање пољопривредне произвдње и понуде на принципима савременог тржишног пословања, унапређењем постојећег стања и коришћењем расположивих природних ресурса. Реализацијом овог концепта могуће је запослити 10000 људи. На основу економско-финансијске анализе добили смо резултате за оправданост оваквог концепта, који може подстаћи развој малих и средњих предузећа из области пољопривредне производње.