bluuebunny/crossref_metadata_2025_split huggingface dataset:
The PdBI Arcsecond Whirlpool Survey (PAWS): The Role of Spiral Arms in Cloud and Star Formation
Authors: Schinnerer Eva , Meidt Sharon E. , Colombo Dario , Chandar Rupali , Dobbs Clare L. , García-Burillo Santiago , Hughes Annie , Leroy Adam K. , Pety Jérôme , Querejeta Miguel , Kramer Carsten , Schuster Karl F. 
Published: February 2017

Abstract
The process that leads to the formation of the bright star-forming sites observed along prominent spiral arms remains elusive. We present results of a multi-wavelength study of a spiral arm segment in the nearby grand-design spiral galaxy M51 that belongs to a spiral density wave and exhibits nine gas spurs. The combined observations of the (ionized, atomic, molecular, dusty) interstellar medium with star formation tracers (H ii regions, young <10 Myr stellar clusters) suggest (1) no variation in giant molecular cloud (GMC) properties between arm and gas spurs, (2) gas spurs and extinction feathers arising from the same structure with a close spatial relation between gas spurs and ongoing/recent star formation (despite higher gas surface densities in the spiral arm), (3) no trend in star formation age either along the arm or along a spur, (4) evidence for strong star formation feedback in gas spurs, (5) tentative evidence for star formation triggered by stellar feedback for one spur, and (6) GMC associations being not special entities but the result of blending of gas arm/spur cross sections in lower resolution observations. We conclude that there is no evidence for a coherent star formation onset mechanism that can be solely associated with the presence of the spiral density wave. This suggests that other (more localized) mechanisms are important to delay star formation such that it occurs in spurs. The evidence of star formation proceeding over several million years within individual spurs implies that the mechanism that leads to star formation acts or is sustained over a longer timescale.
Red Supergiants in the Inner Galaxy: Stellar Properties
Authors: Messineo Maria , Zhu Qingfeng , Menten Karl M. , Ivanov Valentin D. , Figer Donald F. , Kudritzki Rolf-Peter , Chen C.-H. Rosie 
Published: February 2017

Abstract
Red supergiants (RSGs) are luminous cool stars detectable in disks of distant spirals. About a thousand are known in the Galaxy. Here, we analyze a sample of late-type stars recently observed by Messineo et al. in the inner Galaxy (

). A total of 58 targets (25% of previously known RSGs) were reported as supergiants based on their large equivalent widths of the CO band-head at 2.293 μm (EWs > 45 Å, ≳M0I). In this work, luminosities are estimated with infrared measurements and distance moduli for 47 spectroscopically classified RSGs; they range from

to

. Six other RSGs with smaller EW(CO)s are classified according to their luminosities. Using a prescription based on

, moderate mass-loss rates from 10−8 to

yr−1 are inferred. In addition, we report on H and K spectra of 26 stars at R = 1500–2200. EWs of the CO at 2.293 and 1.620 μm, and of atomic lines, are consistent with those of nearby RSGs, within uncertainties. Mg i appears to be a useful diagnostic to confirm RSGs at R = 1500–2200. RSG #66 is a member of the cluster Alicante 7. Star #92 is projected onto the overdensity #495 of Camargo et al., but our analysis suggests they are unrelated. Remaining targets are isolated from other known RSGs within ≈3′.
Multiscale Pressure-Balanced Structures in Three-dimensional Magnetohydrodynamic Turbulence
Authors: Yang Liping , He Jiansen , Tu Chuanyi , Li Shengtai , Zhang Lei , Marsch Eckart , Wang Linghua , Wang Xin , Feng Xueshang 
Published: February 2017

Abstract
Observations of solar wind turbulence indicate the existence of multiscale pressure-balanced structures (PBSs) in the solar wind. In this work, we conduct a numerical simulation to investigate multiscale PBSs and in particular their formation in compressive magnetohydrodynamic turbulence. By the use of the higher-order Godunov code Athena, a driven compressible turbulence with an imposed uniform guide field is simulated. The simulation results show that both the magnetic pressure and the thermal pressure exhibit a turbulent spectrum with a Kolmogorov-like power law, and that in many regions of the simulation domain they are anticorrelated. The computed wavelet cross-coherence spectra of the magnetic pressure and the thermal pressure, as well as their space series, indicate the existence of multiscale PBSs, with the small PBSs being embedded in the large ones. These multiscale PBSs are likely to be related to the highly oblique-propagating slow-mode waves, as the traced multiscale PBS is found to be traveling in a certain direction at a speed consistent with that predicted theoretically for a slow-mode wave propagating in the same direction.
A Hot White Dwarf SDSS J134430.11+032423.1 with a Planetary Debris Disk
Authors: Li Lifang , Zhang Fenghui , Kong Xiaoyang , Han Quanwang , Li Jiansha 
Published: February 2017

Abstract
We discovered a debris disk around hot white dwarf (WD) SDSS J134430.11+032423.1 (SDSS J1344+0324). The effective temperature

26,071(±163) K], surface gravity

, and mass

of this WD have been redetermined based on the analysis of its SDSS spectrum. We found that SDSS J1344+0324 is currently the hottest WD with a debris disk. Two spectra observed by SDSS at different times show that this object is similar to SDSS J1228+1040 with variable near-IR Ca ii triplet emissions from a gaseous disk. The parameters of the debris disk are derived from the IR excess analysis of SDSS J1344+0324. We found that the disk is the coolest of all debris disks around WDs, and that the inner and outer radii are very close to the tide radius of the WD. Thus, the debris disk is very narrow (about 0.22

). This implies that it might be a newly formed disk resulting from the tidal disruption of a rocky planetary body that has just entered the tide volume of the WD. This might provide strong observational evidence for the formation of debris disks around WDs.
MARVEL Analysis of the Measured High-resolution Rovibronic Spectra of 48Ti16O
Authors: McKemmish Laura K. , Masseron Thomas , Sheppard Samuel , Sandeman Elizabeth , Schofield Zak , Furtenbacher Tibor , Császár Attila G. , Tennyson Jonathan , Sousa-Silva Clara 
Published: February 2017

Abstract
Accurate, experimental rovibronic energy levels, with associated labels and uncertainties, are reported for 11 low-lying electronic states of the diatomic

molecule, determined using the Marvel (Measured Active Rotational-Vibrational Energy Levels) algorithm. All levels are based on lines corresponding to critically reviewed and validated high-resolution experimental spectra taken from 24 literature sources. The transition data are in the 2–22,160 cm−1 region. Out of the 49,679 measured transitions, 43,885 are triplet–triplet, 5710 are singlet–singlet, and 84 are triplet–singlet transitions. A careful analysis of the resulting experimental spectroscopic network (SN) allows 48,590 transitions to be validated. The transitions determine 93 vibrational band origins of

, including 71 triplet and 22 singlet ones. There are 276 (73) triplet–triplet (singlet–singlet) band-heads derived from Marvel experimental energies, 123(38) of which have never been assigned in low- or high-resolution experiments. The highest J value, where J stands for the total angular momentum, for which an energy level is validated is 163. The number of experimentally derived triplet and singlet

rovibrational energy levels is 8682 and 1882, respectively. The lists of validated lines and levels for

are deposited in the supporting information to this paper.
Line Identification of Atomic and Ionic Spectra of Holmium in the Near-UV. Part I. Spectrum of Ho i
Authors: Al-Labady N. , Özdalgiç B. , Er A. , Güzelçimen F. , Öztürk I. K. , Kröger S. , Kruzins A. , Tamanis M. , Ferber R. , Başar Gö. 
Published: February 2017

Abstract
The Fourier Transform spectra of a Holmium hollow cathode discharge lamp have been investigated in the UV spectral range from 25,000 up to 31,530 cm−1 (317 to 400 nm). Two Ho spectra have been measured with neon and argon as buffer gases. Based on the intensity ratios from these two spectra, a distinction was made between atomic and ionic lines (ionic lines are discussed in an accompanying paper). Using the known Ho i energy levels, 71 lines could be classified as transitions of atomic Ho, 34 of which have not been published previously. Another 32 lines, which could not be classified, are listed in the literature and assigned as atomic Ho. An additional 370 spectral lines have been assigned to atomic Ho based on the signal-to-noise ratio in the two spectra measured under different discharge conditions, namely with buffer gases argon and neon, respectively. These 370 lines have not been previously listed in the literature.
Fast Radio Bursts with Extended Gamma-Ray Emission?
Authors: Murase Kohta , Mészáros Peter , Fox Derek B. 
Published: February 2017

Abstract
We consider some general implications of bright γ-ray counterparts to fast radio bursts (FRBs). We show that even if these manifest in only a fraction of FRBs, γ-ray detections with current satellites (including Swift) can provide stringent constraints on cosmological FRB models. If the energy is drawn from the magnetic energy of a compact object such as a magnetized neutron star, the sources should be nearby and be very rare. If the intergalactic medium is responsible for the observed dispersion measure, the required γ-ray energy is comparable to that of the early afterglow or extended emission of short γ-ray bursts. While this can be reconciled with the rotation energy of compact objects, as expected in many merger scenarios, the prompt outflow that yields the γ-rays is too dense for radio waves to escape. Highly relativistic winds launched in a precursor phase, and forming a wind bubble, may avoid the scattering and absorption limits and could yield FRB emission. Largely independent of source models, we show that detectable radio afterglow emission from γ-ray bright FRBs can reasonably be anticipated. Gravitational wave searches can also be expected to provide useful tests.
Dunkerque et la Baltique (1686-1856). L’apport des comptes du Sund à la connaissance du grand cabotage européen
Authors: Pourchasse Pierrick 
Published: February 2017

Durant plus de quatre siècles, les navires entrant et sortant de la Baltique devaient payer un péage au roi du Danemark, lors de leur passage au détroit du Sund . Les informations collectées dans les registres de la douane sont désormais accessibles dans une base de données élaborée par l’université de Groningue. L’article propose une étude de l’apport de cette source à la connaissance des relations entre Dunkerque et l’Europe du Nord entre 1686 et 1856 : plus de 5 000 navires sont concernés, ce qui permet de décrire précisément l’évolution du grand cabotage européen sur près de deux siècles.
La Banque de France à Dunkerque, un établissement de crédit national au service du développement économique local (1855-1914)
Authors: de Oliveira Matthieu 
Published: February 2017

Longtemps ajournée, l’installation d’une succursale de la Banque de France à Dunkerque, en 1855, constitue un véritable événement. D’abord parce que le département du Nord compte désormais trois succursales – un record pour l’époque –, ensuite parce que l’édifice bancaire s’en trouve complété ; aux établissements locaux et régionaux s’ajoutent désormais l’institution parisienne et bientôt, les banques à réseaux. Confortablement installée, la Banque de France est également un lieu de sociabilité pour les notabilités industrielles et commerciales : directeurs, administrateurs et censeurs mettent leur expertise au service du développement du port. L’essor rapide de son activité, en volume comme en valeur, en est un indicateur probant.
À propos du néant, de Heidegger à Nishitani
Authors: Stevens Bernard 
Published: February 2017

La réflexion de Nishitani, articulée autour de la thématique du néant, s’enracine dans la pensée heidegerienne (celle de Être et Temps et de « Qu’est-ce que la métaphysique ? ») et elle s’alimente de l’épreuve bouddhique de la vacuité. En outre il s’agit, pour lui, de réinscrire une préoccupation éthico-existentielle au sein du souci ontologico-existential privilégié par Heidegger.
Une nouvelle approche de l’opposition ici/là et ovde/tu
Authors: Corblin Francis , Asic Tijana 
Published: February 2017

Cet article montre que l’adverbe français là possède les propriétés interprétatives des groupes nominaux définis, y compris leurs emplois faibles, alors que ici est un déictique dont l’usage démonstratif est possible et fréquent en raison de son contenu spatial. Il relie donc l’usage de ces adverbes au fonctionnement des groupes nominaux ordinaires, munis d’un déterminant, et tente d’expliquer les différences d’emploi observées à partir des propriétés qui opposent trois grandes catégories d’expressions : les déictiques, les démonstratifs et les définis. On montre en outre que cette proposition peut être étendue à d’autres langues en discutant en détail son extension au serbe et à l’opposition tu/ovde.
Conditions d’assertion de chaque et de tout et règles de déduction du quantificateur universel
Authors: Mari Alda , Retoré Christian 
Published: February 2017

Dans cet article, nous soutenons qu’il y a une différence d’usage entre les quantificateurs universels tout et chaque et que la sémantique en termes de preuves permet d’en rendre compte. Un énoncé prescriptif requiert l’emploi du quantificateur tout , tandis que chaque s’utilise plutôt dans les énoncés descriptifs. Du point de vue des preuves, les énoncés prescriptifs correspondent bien à la règle de quantification universelle des systèmes déductifs, dite de généralisation, déjà présente chez Aristote : si une propriété est établie pour une variable dont nul ne sait rien, alors on peut affirmer qu’elle est vraie de tout individu. En revanche, l’assertion d’un énoncé descriptif universel nécessite de connaître précisément le domaine de quantification et d’explorer, pour chacun des individus du domaine, la vérité de l’énoncé : il s’agit donc d’une conjonction. La quantification avec tout exprime une règle dont la validité entraine de facto la vérité de ce même énoncé formulé avec chaque – aussi la validité de l’énoncé descriptif est-elle conséquence de l’énoncé prescriptif, tandis que le contraire n’est pas vrai. Cela explique que les énoncés obtenus en remplaçant tout par chaque soient plutôt acceptables, tandis que le contraire n’est pas vrai.
Le ministre Hubert Curien
Authors: Waldteufel Philippe 
Published: February 2017

Pendant ses mandats ministériels (1984-1986 puis 1988-1993), Hubert Curien a donné une forte visibilité à la recherche au sein de l’action gouvernementale. Il a agi dans tous les domaines : outils de pilotage (tableaux de bord, prospective, évaluation) ; renforcement de l’organisation de la recherche publique ; cohérence accrue du Budget civil de recherche ; montée en puissance de la recherche industrielle ; développement des rapports entre science, société et citoyen… sans oublier la prédilection pour l’Espace ni, surtout, la priorité qu’Hubert Curien a, toute sa vie durant, donnée à la formation par la recherche.
Residents' Procedural Experience Does Not Ensure Competence: A Research Synthesis
Authors: Barsuk Jeffrey H. , Cohen Elaine R. , Feinglass Joe , McGaghie William C. , Wayne Diane B. 
Published: February 2017

ABSTRACTBackgroundMany medical certifying bodies require that a minimum number of clinical procedures be completed during residency training to obtain board eligibility. However, little is known about the relationship between the number of procedures residents perform and their clinical competence.ObjectiveThis study evaluated associations between residents' medical procedure skills measured in a simulation laboratory and self-reported procedure experience and year of training.MethodsThis research synthesis extracted and summarized data from multiple cohorts of internal medicine, emergency medicine, anesthesiology, and neurology resident physicians who performed simulated clinical procedures. The procedures were central venous catheter insertion, lumbar puncture, paracentesis, and thoracentesis. We compared residents' baseline simulated performance to their self-reported procedure experience using data from 7 research reports written by Northwestern University investigators between 2006 and 2016. We also evaluated how performance differed by postgraduate year (PGY).ResultsA total of 588 simulated procedures were performed during the study period. We found significant associations between passing the skills examinations and higher number of self-reported procedures performed (P = .011) and higher PGY (P &lt; .001). However, performance for all procedures was poor, as only 10% of residents passed the assessments with a mean of 48% of checklist items correct (SD = 24.2). The association between passing the skills examination and year of training was mostly due to differences between PGY-1 and subsequent years of training.ConclusionsDespite positive associations between self-reported experience and simulated procedure performance, overall performance was poor. Residents' clinical experience is not a proxy for skill.
Improving Timely Resident Follow-Up and Communication of Results in Ambulatory Clinics Utilizing a Web-Based Audit and Feedback Module
Authors: Boggan Joel C. , Swaminathan Aparna , Thomas Samantha , Simel David L. , Zaas Aimee K. , Bae Jonathan G. 
Published: February 2017

ABSTRACT

Background
Failure to follow up and communicate test results to patients in outpatient settings may lead to diagnostic and therapeutic delays. Residents are less likely than attending physicians to report results to patients, and may face additional barriers to reporting, given competing clinical responsibilities.

Objective
This study aimed to improve the rates of communicating test results to patients in resident ambulatory clinics.

Methods
We performed an internal medicine, residency-wide, pre- and postintervention, quality improvement project using audit and feedback. Residents performed audits of ambulatory patients requiring laboratory or radiologic testing by means of a shared online interface. The intervention consisted of an educational module viewed with initial audits, development of a personalized improvement plan after Phase 1, and repeated real-time feedback of individual relative performance compared at clinic and program levels. Outcomes included results communicated within 14 days and prespecified “significant” results communicated within 72 hours.

Results
A total of 76 of 86 eligible residents (88%) reviewed 1713 individual ambulatory patients' charts in Phase 1, and 73 residents (85%) reviewed 1509 charts in Phase 2. Follow-up rates were higher in Phase 2 than Phase 1 for communicating results within 14 days and significant results within 72 hours (85% versus 78%, P &lt; .001; and 82% versus 70%, P = .002, respectively). Communication of “significant” results was more likely to occur via telephone, compared with communication of nonsignificant results.

Conclusions
Participation in a shared audit and feedback quality improvement project can improve rates of resident follow-up and communication of results, although communication gaps remained.
Residents' Exposure to Educational Experiences in Facilitating Hospital Discharges
Authors: Young Eric , Stickrath Chad , McNulty Monica , Calderon Aaron J. , Chapman Elizabeth , Gonzalo Jed D. , Kuperman Ethan F. , Lopez Max , Smith Christopher J. , Sweigart Joseph R. , Theobald Cecelia N. , Burke Robert E. 
Published: February 2017

ABSTRACT

Background
There is an incomplete understanding of the most effective approaches for motivating residents to adopt guideline-recommended practices for hospital discharges.

Objective
We evaluated internal medicine (IM) residents' exposure to educational experiences focused on facilitating hospital discharges and compared those experiences based on correlations with residents' perceived responsibility for safely transitioning patients from the hospital.

Methods
A cross-sectional, multi-center survey of IM residents at 9 US university- and community-based training programs in 2014–2015 measured exposure to 8 transitional care experiences, their perceived impact on care transitions attitudes, and the correlation between experiences and residents' perceptions of postdischarge responsibility.

Results
Of 817 residents surveyed, 469 (57%) responded. Teaching about care transitions on rounds was the most common educational experience reported by residents (74%, 327 of 439). Learning opportunities with postdischarge patient contact were less common (clinic visits: 32%, 142 of 439; telephone calls: 12%, 53 of 439; and home visits: 4%, 18 of 439). On a 1–10 scale (10 = highest impact), residents rated postdischarge clinic as having the highest impact on their motivation to ensure safe transitions of care (mean = 7.61). Prior experiences with a postdischarge clinic visit, home visit, or telephone call were each correlated with increased perceived responsibility for transitional care tasks (correlation coefficients 0.12 [P = .004], 0.1 [P = .012], and 0.13 [P =  001], respectively).

Conclusions
IM residents learn to facilitate hospital discharges most often through direct patient care. Opportunities to interact with patients across the postdischarge continuum are uncommon, despite correlating with increased perceived responsibility for ensuring safe transitions of care.
Effects of atmospheric dynamics and aerosols on the fraction of supercooled water clouds
Authors: Li Jiming , Lv Qiaoyi , Zhang Min , Wang Tianhe , Kawamoto Kazuaki , Chen Siyu , Zhang Beidou 
Published: February 2017

Abstract. Based on 8 years of (January 2008–December 2015) cloud phase information from the GCM-Oriented Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) Cloud Product (GOCCP), aerosol products from CALIPSO and meteorological parameters from the ERA-Interim products, the present study investigates the effects of atmospheric dynamics on the supercooled liquid cloud fraction (SCF) during nighttime under different aerosol loadings at global scale to better understand the conditions of supercooled liquid water gradually transforming to ice phase. Statistical results indicate that aerosols' effect on nucleation cannot fully explain all SCF changes, especially in those regions where aerosols' effect on nucleation is not a first-order influence (e.g., due to low ice nuclei aerosol frequency). By performing the temporal and spatial correlations between SCFs and different meteorological factors, this study presents specifically the relationship between SCF and different meteorological parameters under different aerosol loadings on a global scale. We find that the SCFs almost decrease with increasing of aerosol loading, and the SCF variation is closely related to the meteorological parameters but their temporal relationship is not stable and varies with the different regions, seasons and isotherm levels. Obviously negative temporal correlations between SCFs versus vertical velocity and relative humidity indicate that the higher vertical velocity and relative humidity the smaller SCFs. However, the patterns of temporal correlation for lower-tropospheric static stability, skin temperature and horizontal wind are relatively more complex than those of vertical velocity and humidity. For example, their close correlations are predominantly located in middle and high latitudes and vary with latitude or surface type. Although these statistical correlations have not been used to establish a certain causal relationship, our results may provide a unique point of view on the phase change of mixed-phase cloud and have potential implications for further improving the parameterization of the cloud phase and determining the climate feedbacks.