bluuebunny/crossref_metadata_2025_split huggingface dataset:
Aquaplanet Models on Eccentric Orbits: Effects of the Rotation Rate on Observables
Authors: Adams Arthur D. , Boos William R. , Wolf Eric T. 
Published: April 2019

Abstract
Rotation and orbital eccentricity both strongly influence planetary climate. Eccentricities can often be measured for exoplanets, but rotation rates are currently difficult or impossible to constrain. Here we examine how the combined effects of rotation and eccentricity on observed emission from ocean-rich terrestrial planets can be used to infer their rotation rates in circumstances where their eccentricities are known. We employ an Earth climate model with no land and a slab ocean, and consider two eccentricities (e = 0.3 and 0.6) and two rotation rates: a fast Earth-like period of 24 hr, and a slower pseudo-synchronous period that generalizes spin synchronization for eccentric orbits. We adopt bandpasses of the Mid-Infrared Instrument on the James Webb Space Telescope as a template for future photometry. At e = 0.3 the rotation rates can be distinguished if the planet transits near periastron, because slow rotation produces a strong day–night contrast and thus an emission minimum during periastron. However, light curves behave similarly if the planet is eclipsed near periastron, as well as for either viewing geometry at e = 0.6. Rotation rates can nevertheless be distinguished using ratios of emission in different bands, one in the water vapor window with another in a region of strong water absorption. These ratios vary over an orbit by ≲0.1 dex for Earth-like rotation, but by 0.3–0.5 dex for pseudo-synchronous rotation because of large day–night contrast in upper-tropospheric water. For planets with condensible atmospheric constituents in eccentric orbits, rotation regimes might thus be distinguished with infrared observations for a range of viewing geometries.
Discovery of a Lyα-emitting Dark Cloud within the z ∼ 2.8 SMM J02399-0136 System
Authors: Li Qiong , Cai Zheng , Prochaska J. Xavier , Battaia Fabrizio Arrigoni , Ivison R. J. , Falgarone Edith , Cantalupo Sebastiano , Matuszewski Mateusz , Neill James Don , Wang Ran , Martin Chris , Moore Anna 
Published: April 2019

Abstract
We present Keck/Keck Cosmic Web Imager (KCWI) integral field spectrograph observations of the complex system surrounding SMM J02399−0136 (a lensed z = 2.8 sub-mm galaxy), including an associated Lyα nebula, a dust-obscured, broad-absorption-line quasar, and neighboring galaxies. At a 3σ surface brightness contour of 1.6 × 10−17 erg s−1 cm−2 arcsec−2, the Lyα nebula extends over 17 arcsec (≳140 physical kpc) and has a total Lyα luminosity of

(uncorrected for lensing). The nebula exhibits a kinematic shear of

over 100 pkpc with lowest velocities east of SMM J02399−0136 and increasing to the southwest. We also discover a bright, Lyα emitter, separated spatially and kinematically from the nebula, at a projected separation of ≈60 kpc from the quasar. This source has no clear central counterpart in deep Hubble Space Telescope imaging, giving an intrinsic Lyα rest-frame equivalent width greater than 312 Å (5σ). We argue that this “dark cloud” is illuminated by the quasar with a UV flux that is orders of magnitude brighter than the emission along our sightline. This result confirms statistical inferences that luminous quasars at z > 2 emit UV radiation anisotropically. Future KCWI observations of other lines, e.g., Lyβ, He ii, C iv, etc, and with polarimetry will further reveal the origin of the Lyα nebula and nature of the dark cloud.
Imaging Polarimetry of the Type I Superluminous Supernova 2018hti
Authors: Lee 李見 Chien-Hsiu 修 
Published: April 2019

Abstract
We present time-series imaging polarimetry observations of a very nearby superluminous supernova 2018hti at z = 0.063, to probe its explosion mechanism and shed light on the energy source powering superluminous supernovae (SLSNe). We obtain linear polarimetry using the Alhambra Faint Object Spectrograph and Camera on board the 2.5 m Nordic Optical Telescope. Our observations show polarization at the ∼1.9% level before and after the supernova reached light-curve maximum. However, this level of polarization is consistent with the line-of-sight interstellar polarization; hence, the polarization from the supernovae itself was not detected at a level of >3σ. This suggests that the explosion of SN 2018hti is almost spherical, similar to previous polarimetry studies of other SLSNe.
A new white-spotted Megaselia Rondani (Diptera: Phoridae) from western North America
Authors: Brown Brian , Wong Maria , Hartop Emily 
Published: April 2019

The phorid fly genus Megaselia Rondani is a large, poorly-known taxon whose species are found worldwide.
A new species of Megaselia Rondani, M.simunorum, is described from both urban and rural sites in southern California. With a large area of white colour on the posterior part of the abdominal dorsum, it closely resembles the much more common species M.sulphurizona, but M.simunorum has distinctly thicker ventral setae on the abdomen and a differently-shaped white spot.
Cultural studies , production et économie morale
Authors: Hesmondhalgh David , Morin Céline 
Published: April 2019

Les approches issues des cultural studies ont insufflé à la recherche sur les productions médiatiques et culturelles une vigueur nouvelle et nécessaire. Cependant, il devient de plus en plus clair au fil des ans qu’elles rencontrent également de sérieuses limites. L’évaluation menée dans cet article repose sur une première partie dans laquelle nous explorons, en profitant du recul historique, la période d’opposition entre les cultural studies et l’économie politique des années 1990, en distinguant ce que nous appelons les modes théorique et populiste des cultural studies . Nous esquissons ensuite les trois « écoles » des approches cultural studies vis-à-vis de la production et de l’économie : cultural economy , production studies , et creative industries analysis . Selon nous, ces approches en cultural studies de la production et de l’industrie dans le domaine de la culture pêchent, tant dans leur mode populiste que dans leur mode théorique, par le manque d’attention portée à des problématiques fondamentales liées à la normativité dans les rapports entre la culture, les médias et l’économie. Dans les deux dernières parties, portant sur le tournant du cultural labour et le concept d’économie morale, nous suggèrerons des solutions pour une prise en compte plus explicite des problèmes de normativité, proposant ainsi une base éthique potentiellement plus rigoureuse pour l’étude de questions importantes dans le champ de la production culturelle. Nous appliquerons succinctement ce système au rapport problématique entre les biens culturels et le bien-être dans les sociétés modernes.
Les serious games , dispositifs de communication persuasive
Authors: Fourquet-Courbet Marie-Pierre , Courbet Didier 
Published: April 2019

L’article s’intéresse aux serious games persuasifs qui invitent les joueurs à résoudre des « problèmes ludiques » dans le but de provoquer chez eux des changements psychosociaux et comportementaux. Pour combler un manque dans la littérature, il propose une synthèse des recherches empiriques et expérimentales sur les processus socio-cognitifs et socio-affectifs qui se développent lors des usages des SG et qui sous-tendent la modification des comportements, des attitudes, affects et cognitions. Cette synthèse théorique est articulée autour de trois grands modèles en interaction : « l’apprentissage ludique opérant », l’apprentissage social par modelage et la médiation affective par le flow. Nous ouvrons également de nouvelles pistes de recherches parmi lesquelles un quatrième modèle basé sur la communication engageante.
Le chargé des réseaux socio-numériques au sein des médias
Authors: Pignard-Cheynel Nathalie , Amigo Laura 
Published: April 2019

À partir d’une enquête menée au sein de onze rédactions françaises, cet article vise à étudier les modalités de gestion des réseaux socionumériques (RSN) en interrogeant les personnes qui en ont la charge. L’analyse met en évidence l’existence d’un discours partagé du métier de chargé des RSN, défini par un socle commun de huit tâches dont l’opérationnalisation présente des distinctions parfois fortes. Cette tension, entre homogénéité d’un discours et hétérogénéité des pratiques, s’explique par des jeux de négociations entre trois logiques ( gatekeeping , marketing et participative) encadrant et donnant un sens à l’action. Il apparaît enfin que ces logiques sont dépendantes de la nature des médias, des stratégies mises en œuvre et des caractéristiques organisationnelles des rédactions.
Le travail sur plateforme
Authors: Flichy Patrice 
Published: April 2019

Cet article cherche à montrer ce qui fait l’unité et la diversité du travail sur plateforme. Au cœur de ce système, on trouve la présence d’un algorithme pour rapprocher l’offre et la demande, pour organiser l’activité, mais aussi le développement du travail indépendant et la participation des amateurs. Derrière ces éléments communs, on trouve une grande diversité de plateformes, l’article en propose une typologie, en retraçant la genèse de ce dispositif. Il distingue les plateformes de culture et de connaissance, le crowdworking qui peut prendre deux modalités, le freelance et le travail du clic et enfin la fourniture de services à la demande avec deux modalités : plateforme-marché, plateforme-cadre. L’article décrit, pour chaque type de plateforme, le type de travail exercé, le cadrage introduit par la plateforme, ce qui distingue l’activité des indépendants et des amateurs de celle des salariés. Il montre finalement que le travail sur plateforme peut être un travail réellement choisi, un travail en plus ou un travail faute de mieux. Selon les cas, il s’agit d’un travail ouvert (continuum entre activité amateur et activité professionnelle) ou d’une zone grise entre travail indépendant et travail salarié, entre autonomie et subordination.
A Critical Thinking Model for Nursing Judgment
Authors: Kataoka-Yahiro Merle , Saylor Coleen 
Published: April 2019

ABSTRACT
Increasingly, the characteristic that distinguishes a professional nurse is cognitive rather than psychomotor ability. Critical thinking is an essential component of nursing. Yet, no clear definition or conceptualization of critical thinking for nursing judgment has existed. Lack of consensus and overlapping definitions may well diminish the profession's ability to articulate this concept and facilitate its development. This article proposes the Critical Thinking Model for Nursing Judgment, which specifies five components: specific knowledge base, experience, competencies, attitudes, and standards. The model has three levels of critical thinking: basic, complex, and commitment. It provides a definition and conceptualization of critical thinking based on a review of the literature and input from nurses and nurse educators. The model provides a first step for development of further research and educational strategies to promote critical thinking as an essential part of autonomous, excellent nursing practice.
Long Term Well Plug Integrity Assurance – A Probabilistic Approach
Authors: Willis Brian Mathew , Strutt John Edward , Eden Robert David 
Published: April 2019

AbstractWell plugging and abandonment (P&A) poses significant long-term risks for the industry with thousands of onshore and offshore wells requiring P&A in the coming decades. Historically, operators have typically followed a prescribed P&A approach to meet regulatory requirements. However, a risk-based approach allows bespoke abandonment strategies for individual wells, with the potential to reduce the time and effort needed for low-risk wells, while justifying any necessary additional P&A resources for managing higher risk wells. An advance computational risk-based, predictive well integrity model, STEM-flow, has been developed to support risk-based P&A and new plug technology qualification, and to compliment an extensive material test programme for structural bismuth alloys for plugging and abandonment and carried out as part of a collaborative research program.The model enables assessment of leak paths and leak rates with time, addressing multiple plugs and well barrier elements, degradation of barrier materials, cross-flow potential and reservoir re-pressurization. The mathematical model is based on a connectivity matrix, whose elements are effective permeability values, derived from well barrier models, which separate isolated pressurized zones, along a potential leak pathway. Key elements of the approach include the focus on fundamental models for barrier failure mechanisms and the handling of uncertain model parameters through Monte Carlo Simulation to calculate statistical life and probability of failure of plugs and complete well P&A designs. The paper outlines the approach employed by STEM-flow for evaluating and comparing the effectiveness of different P&A designs, plugging technologies, cement plugs and new sealing materials such as creep resisting structural bismuth alloys. Two cases are studied, involving the prediction of plug life and overall life of a specific well P&A design. These cases compare a typical well P&A design for a subsea well in the Central North Sea using conventional cement barriers with that of structural bismuth alloy plugs under development.
Polymers for EOR in Offshore Reservoirs: Recommended Practices for Laboratory Screening
Authors: Araujo de Itriago Yani Carolina , Araujo Fresky Mariela 
Published: April 2019

AbstractMost EOR methods, and hence most EOR screening criteria, traditionally focus on onshore applications due to lower cost and complexity in the implementation. Despite the challenges associated to offshore environments, EOR application in offshore fields is receiving increasing attention since the size of the prize is significantly large to overcome the high costs associated to the development.The oil and gas community is evaluating and testing potential applications of chemical EOR to offshore assets based on the need to develop increasingly deeper reservoirs. Some of these reservoirs are characterized by having relative high temperature and high salinity, conditions where most available chemicals for EOR have limited applicability. Recent efforts to develop high temperature polymers have been reported, however, there is no clear understanding of what would work best in those harsh environments.In this work, we propose an integrated workflow for laboratory screening of polymers for application in offshore reservoirs with high temperature and high salinity. We provide an overview of the main steps of the workflow and recommended protocols for the different laboratory measurements. The proposed workflow has been derived from best practices reported in the literature and our experimental work over the last two decades. We also provide a summary of the latest polymers developed for application in high temperature and high salinity reservoirs and point out the required testing that we recommend for an appropriate screening of chemicals for offshore EOR applications.Each of the steps of the recommended workflow is described showing with actual data the limitations used in some prior screening work. We emphasize the need to move away from ‘ideal’ lab conditions by using representative rock and fluid samples and doing the experiments at reservoir conditions of pressure, temperature and representative saturation, and to consider a variety of scenarios for the testing that describe the expected changes that the polymer solutions will experience during their lifetime in the application, and give a list of the minimal testing needed to get a proper understanding of the potential polymer performance.We provide recommendations on the best available polymers for EOR application in offshore assets to date. In summary, for temperatures greater than 95°C and salinity above 90,000 ppm standard polymers like acrylamide, polyacrylamide and partially hydrolyzed polyacrylamide (HPAM) cannot be used, and the promising newly developed polymers include modifications of acrylamide, thermal associated polymers and HPAM functionalized with AMPS monomers.In this study, it has been developed an integrated workflow for laboratory screening of polymers for EOR applications in offshore assets and provide recommendations for the selection of polymers for use in high temperature and high salinity assets.
Naar een nieuwe selectiviteitstoets in het staatssteunrecht
Authors: Knook A.D.L. 
Published: April 2019

Naar een nieuwe selectiviteitstoets in het staatssteunrecht
Op grond van artikel 10 lid 1 VWEU is slechts sprake van staatssteun indien bepaalde ondernemingen of bepaalde producties worden begunstigd. In de praktijk wordt al snel aangenomen dat aan dit selectiviteitscriterium wordt voldaan. Uit twee ontwikkelingen sinds eind 2016 in de jurisprudentie over dit criterium volgt echter dat deze aanname relativering behoeft. In dit artikel wordt stilgestaan bij de vraag welke gevolgen deze twee ontwikkelingen in de praktijk (kunnen) hebben. HvJ 14 januari 2015, zaak C-518/13, Eventech, ECLI:EU:C:2015:9. HvJ 21 december 2016, zaak C-524/14 P, Lübeck, ECLI:EU:C:2016:971. HvJ 20 december 2017, zaak C-70/16 P, Comunidad Autónoma de Galicia en Retegal/Commissie, ECLI:EU:C:2017:1002.
Notas bibliográfico-críticas de filología castellana medieval = Critical Bibliographical Notes on Medieval Castilian Philology
Authors: Abad Nebot Francisco 
Published: April 2019

Los presentes párrafos indican fuentes primarias o secundarias acerca de la lengua y la literatura castellanas medievales; se analizan las primeras, y se orienta acerca de las segundas. Se trata de mantener un punto de vista específicamente filológico y atento, por lo tanto, a lengua, literatura e historia.AbstractThe following study identifies primary and secondary sources of medieval Castilian language and literature: primary sources will be analysed, while secondary sources will merely be commented for future research. This article adopts a strictly philological approach and hence will focus on language, literature and history.
Periodontal condition in growing subjects with Marfan Syndrome: a case-control study
Authors: Venza Nicolò , Danesi Carlotta , Contò Diego , Fabi Francesco , Mampieri Gianluca , Sangiuolo Federica , Laganà Giuseppina 
Published: April 2019

Background
Marfan’s syndrome (MFS) is a systemic disorder of connective tissue caused by mutations in the extracellular matrix protein fibrillin-1. Orofacial characteristics may be useful in identification of the syndrome. Severe periodontitis is sometimes observed in MFS patients, but no in-depth information has been reported in Italian groups of growing subjects with MFS. The aim of this study was to analyze the periodontal condition on a group of growing subjects affected by MFS, in comparison with a typically developed control group.

Methods
A group of 16 subjects with diagnosed MFS were recruited from the Centre for Rare Diseases for Marfan Syndrome and Related Disorders of Tor Vergata University Hospital. The Marfan Group (MG) was compared with a Control Group (CG) composed by 20 nonsyndromic subjects. The periodontal clinical parameters like Marginal Gingival Thickness (GT), Plaque Index (PI), Bleeding On Probing (BOP) and Modified Periodontal Screening and Recording (PSR) were assessed.

Results
The mean value of PI in MG was 59%, instead in CG it reached 21%. Analysis showed a significant difference between MG and CG also for the BOP. In MG the mean value of BOP attained 36% and in CG it reached 16%. A statistical significant difference of distribution of PSR index between the two groups was found for all sextant examined.

Discussion
Patients with Marfan syndrome reveal a higher presence of plaque and consequently a generalized inflammation in the oral cavity when compared with a control group.
Comparative Evaluation of the Antibacterial Effects of Honey with Standard Antibiotic on Bacterial Isolates from Wound Infection
Authors: Bunza N. M. , Kumurya A. S. , Isah A. A. , Abdul Azeez B. O. , Nafiu F. 
Published: April 2019

Aim: The aim of this study was to compare the antibacterial activities of the Honey against Ciprofloxacin on four bacterial isolates from a wound.
Study Design: It is a cross sectional comparative and observational study.
Place and Duration of Study: The study was conducted in Usmanu Danfodiyo University Teaching Hospital (UDUTH), Sokoto State, Nigeria between July 2017 and October 2017.
Methodology: One hundred and one (101) bacterial wound isolates were collected and identified using the standard microbiological methods of Gram staining and biochemical test. The activity patterns of the Honey concentrations and the standard antibiotic were determined using Kirby-Bauer disc diffusion and Punched Holes techniques. Similarly, minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs) of the Honey were determined using Macrobroth dilution technique.
Results: Out of 101 isolates collected and identified, 33(32.7%) were Staphylococcus aureus, 29(28.7%) Pseudomonas aeruginosa, 21(20.8%) Escherichia coli and 18(17.8%) Proteus mirabilis. Antibacterial activity of honey was observed at 100% and 50% concentrations for S. aureus (10.7±0.13 mm and 8.4±0.16 mm), P. aeruginosa, (11.0±0.45 mm and 7.6±0.26 mm) and E. coli, (11.1±0.61 mm and 7.5±0.55 mm) respectively. Comparison of the inhibitory zone diameters showed that Ciprofloxacin (30.65±0.37 mm) had higher antibacterial activity than the raw honey (10.45±0.51 mm).
The Minimum inhibitory concentration (MICs) of crude honey on S. aureus was 5%, P. aeruginosa 50%, E. coli 20%, and P. mirabilis 100%, while the minimum bactericidal concentration (MBC) of crude honey on S. aureus was 50%, P. aeruginosa 100%, E. coli 100%, and P. mirabilis was resistant.
Conclusion: The result obtained from this study established that honey possessed antibacterial activity at 50% and 100% concentrations against S. aureus, P. aeruginosa and E. coli, which indicates that development of inhibition zones, depends on the concentration of the honey used as well as the nature of the tested pathogen. The findings also revealed that ciprofloxacin has higher antimicrobial activity than the type of honey used in this study.