bluuebunny/crossref_metadata_2025_split huggingface dataset:
CALIBRATION OF THE VOYAGER ULTRAVIOLET SPECTROMETERS AND THE COMPOSITION OF THE HELIOSPHERE NEUTRALS: REASSESSMENT
Authors: Ben-Jaffel Lotfi , Holberg J. B. 
Published: June 2016

ABSTRACT
The data harvest from the Voyagers’ (V
1 and V
2) Ultraviolet Spectrometers (UVS) covers encounters with the outer planets, measurements of the heliosphere sky-background, and stellar spectrophotometry. Because their period of operation overlaps with many ultraviolet missions, the calibration of V1 and V2 UVS with other spectrometers is invaluable. Here we revisit the UVS calibration to assess the intriguing sensitivity enhancements of 243% (V1) and 156% (V2) proposed recently. Using the Lyα airglow from Saturn, observed in situ by both Voyagers, and remotely by International Ultraviolet Explorer (IUE), we match the Voyager values to IUE, taking into account the shape of the Saturn Lyα line observed with the Goddard High Resolution Spectrograph on board the Hubble Space Telescope. For all known ranges of the interplanetary hydrogen density, we show that the V1 and V2 UVS sensitivities cannot be enhanced by the amounts thus far proposed. The same diagnostic holds for distinct channels covering the diffuse He i 58.4 nm emission. Our prescription is to keep the original calibration of the Voyager UVS with a maximum uncertainty of 30%, making both instruments some of the most stable EUV/FUV spectrographs in the history of space exploration. In that frame, we reassess the excess Lyα emission detected by Voyager UVS deep in the heliosphere, to show its consistency with a heliospheric but not galactic origin. Our finding confirms results obtained nearly two decades ago—namely, the UVS discovery of the distortion of the heliosphere and the corresponding obliquity of the local interstellar magnetic field (

from upwind) in the solar system neighborhood—without requiring any revision of the Voyager UVS calibration.
DIRECT DETECTION OF PRECURSORS OF GAS GIANTS FORMED BY GRAVITATIONAL INSTABILITY WITH THE ATACAMA LARGE MILLIMETER/SUBMILLIMETER ARRAY
Authors: Mayer Lucio , Peters Thomas , Pineda Jaime E. , Wadsley James , Rogers Patrick 
Published: June 2016

ABSTRACT
Phases of gravitational instability are expected in the early phases of disk evolution, when the disk mass is still a substantial fraction of the mass of the star. Disk fragmentation into sub-stellar objects could occur in the cold exterior part of the disk. Direct detection of massive gaseous clumps on their way to collapse into gas giant planets would offer an unprecedented test of the disk instability model. Here we use state-of-the-art 3D radiation-hydro simulations of disks undergoing fragmentation into massive gas giants, post-processed with RADMC-3D to produce dust continuum emission maps. These are then fed into the Common Astronomy Software Applications (CASA) ALMA simulator. The synthetic maps show that both overdense spiral arms and actual clumps at different stages of collapse can be detected with the Atacama Large Millimeter/submillimeter Array (ALMA) in the full configuration at the distance of the Ophiuchus star forming region (125 pc). The detection of clumps is particularly effective at shorter wavelengths (690 GHz) combining two resolutions with multi-scale clean. Furthermore, we show that a flux-based estimate of the mass of a protoplanetary clump can be comparable to a factor of three higher than the gravitationally bound clump mass. The estimated mass depends on the assumed opacity, and on the gas temperature, which should be set using the input of radiation-hydro simulations. We conclude that ALMA has the capability to detect “smoking gun” systems that are a signpost of the disk instability model for gas giant planet formation.
EXPLORATORY CHANDRA OBSERVATION OF THE ULTRALUMINOUS QUASAR SDSS J010013.02+280225.8 AT REDSHIFT 6.30
Authors: Ai Yanli , Dou Liming , Fan Xiaohui , Wang Feige , Wu Xue-Bing , Bian Fuyan 
Published: June 2016

ABSTRACT
We report exploratory Chandra observations of the ultraluminous quasar SDSS J010013.02+280225.8 at redshift 6.30. The quasar is clearly detected by Chandra with a possible component of extended emission. The rest-frame 2–10 keV luminosity is

9.0

−
4.5

+
9.1

×

1045 erg s−1 with an inferred photon index of Γ =

3.03

−
0.70

+
0.78

. This quasar is X-ray bright, with an inferred X-ray-to-optical flux ratio

α

ox

=

−

1.22

−
0.05

+
0.07

, higher than the values found in other quasars of comparable ultraviolet luminosity. The properties inferred from this exploratory observation indicate that this ultraluminous quasar might be growing with super-Eddington accretion and probably viewed with a small inclination angle. Deep X-ray observations will help to probe the plausible extended emission and better constrain the spectral features for this ultraluminous quasar.
THE COMPLEX STRUCTURE OF MAGNETIC FIELD DISCONTINUITIES IN THE TURBULENT SOLAR WIND
Authors: Greco A. , Perri S. , Servidio S. , Yordanova E. , Veltri P. 
Published: June 2016

ABSTRACT
Using high-resolution Cluster satellite observations and a multi-dimensional intermittency technique, we show that the magnetic discontinuities in the turbulent solar wind are connected through the spatial scales, going from proton down to electron scales. In some circumstances, their structure resembles the Harris equilibrium profile in plasmas. Observations are consistent with a scenario where many current layers develop in turbulence and where the outflow of these reconnection events are characterized by complex sub-proton networks of secondary islands, in a self-similar way. Although in the past these pictures have been speculated to be separately ubiquitous, through theories and simulations, the present work confirms that “reconnection in turbulence” and “turbulent reconnection” coexist in space plasmas.
INTERSTELLAR SCINTILLATION AND THE RADIO COUNTERPART OF THE FAST RADIO BURST FRB 150418
Authors: Akiyama Kazunori , Johnson Michael D. 
Published: June 2016

ABSTRACT
Keane et al. have recently reported the discovery of a new fast radio burst (FRB), FRB 150418, with a promising radio counterpart at 5.5 and 7.5 GHz—a rapidly decaying source, falling from 200–300 μJy to 100 μJy on timescales of ∼6 days. This transient source may be associated with an elliptical galaxy at redshift z = 0.492, providing the first firm spectroscopic redshift for an FRB and the ability to estimate the density of baryons in the intergalactic medium via the combination of known redshift and radio dispersion of the FRB. An alternative explanation, first suggested by Williams & Berger, is that the identified counterpart may instead be a compact active galactic nucleus (AGN). The putative counterpart’s variation may then instead be extrinsic, caused by refractive scintillation in the ionized interstellar medium of the Milky Way, which would invalidate the association with FRB 150418. We examine this latter explanation in detail and show that the reported observations are consistent with scintillating radio emission from the core of a radio-loud AGN having a brightness temperature T
b ≳ 109 K. Using numerical simulations of the expected scattering for the line of sight to FRB 150418, we provide example images and light curves of such an AGN at 5.5 and 7.5 GHz. These results can be compared with continued radio monitoring to conclusively determine the importance of scintillation for the observed radio variability, and they show that scintillation is a critical consideration for continued searches for FRB counterparts at radio wavelengths.
Plasma miR-26a as a Diagnostic Biomarker Regulates Cytokine Expression in Systemic Juvenile Idiopathic Arthritis
Authors: Sun Juan , Feng Miao , Wu Fengqi , Ma Xiaolin , Lu Jie , Kang Min , Liu Zhewei 
Published: June 2016

Objective.We sought to identify specific microRNA (miRNA) for systemic juvenile idiopathic arthritis (sJIA) and to determine the involvement of these miRNA in regulating the expression of cytokines.Methods.Microarray profiling was performed to identify differentially expressed miRNA in sJIA plasma. Levels of candidate miRNA and mRNA were assessed by real-time PCR, and cytokines were measured by ELISA. Dual-luciferase reporter assay was used to validate the direct interaction between miR-26a and interleukin 6 (IL-6).Results.Forty-eight miRNA were differentially expressed in the plasma of patients with sJIA compared with healthy controls (HC). Five miRNA were selected for further validation. The expression level of miR-26a was exclusively elevated in the plasma of patients with sJIA as compared with 4 rheumatic diseases and 2 subtypes of JIA (oligoarticular and polyarticular). The levels of IL-6, IL-1β, and tumor necrosis factor-α in the plasma of patients with sJIA were increased, and only IL-6 presented a positive correlation with miR-26a (r = 0.539, p < 0.0001). After stimulation with IL-6, miR-26a expression was upregulated in THP-1 cells, while the supernatant level of IL-6 was downregulated by transfection of miR-26a mimics. Consistently, direct target relationship between miR-26a and IL-6 was confirmed.Conclusion.This study demonstrates that miR-26a is expressed specifically and highly in sJIA plasma and suggests that miR-26a may regulate the levels of cytokines in sJIA. Our findings highlight miR-26a as a potential biomarker for the diagnosis as well as differential diagnosis of sJIA.
A Study of Training Managers and Department Managers role in Successful Implementation of E- Learning as Training Medium in Hospitality Industry in India
Authors: Mathai Renju 
Published: June 2016

A large number of organizations have shifted, wholly or partially towards using E- Learning as a training tool. Hospitality industry is one such important industry which has already started using E- Learning as a training tool. It is extremely important for hospitality industry to improve the skills and knowledge of their employees where there is a lot of transition globally, so that the industry can keep in pace with the changes happening and attain success in this transition. In spite of being one of the most important industries in India, research in the usage of E- Learning in hospitality industry is extremely limited. The department and training managers of the hotels also play an important role in the successful implementation of E-Learning by rendering support and guidance to the trainees, by which the trainees self-efficacy is boosted to undergo the E-Learning and leads to improvement in performance and efficiency. E-Learning can be used by the management for rapid delivery of information, more reliable and better learning opportunities for employees. This study shows that effective training through E-Learning is one of its robust technologies which will definitely enhance the quality in a faster pace of training the employees in the hospitality sector. This transformation will bring mobility of the corporate managers to be positioned in a centralized location to facilitate and incorporate the best training practices that the hospitality industry is lacking in the proposed region of study. Based on the results and findings it is seen that cost benefit analysis has rated by all the managers for the successful implementation of E-Learning as a training medium. It helps the training manager to explain the productiveness of the training program and leads to the successful implementation of E-Learning as a training medium. By looking into the department managers role, it is seen that analyzing the characteristics of the employees and take into consideration during course design, giving orientation to the trainees at the start of the course and after the updating of course material and responding to the feedback by updating or amending the course material as per the requirement are proven to be the top significant role of the department managers for the successful implementation of E-Learning.
Entrevista con Lluis Mallart
Authors: Aranzadi Juan 
Published: June 2016

Este número monográfico de ENDOXA está dedicado aNuevas investigaciones sobre y desde Guinea Ecuatorial, aunque paradójicamente comience por el intercambio epistolar con un antropólogo recientemente fallecido, Amador Martín del Molino, y continúe con las entrevistas a dos veteranos antropólogos,James Fernández y lluis Mallart, cuyas investigaciones –fundamentales para quienes nos interesamos por los pueblos de Guinea- versaron, sin embargo, sobre los Fang de Gabón y los Evuzok de Camerún, aunque los dos intentaron, en algún momento, hacer trabajo de campo en Guinea.
Entrevista con James Fernández
Authors: Aranzadi Juan 
Published: June 2016

El pasado 22 de enero del año 2015, a propuesta del Departamento de Antropología Social y Cultural, la UNED concedió el Doctorado Honoris Causa a los antropólogos norteamericanos Stanley H. Brandes y James W. Fernández por sus importantes aportaciones a la Etnografía de los Pueblos de España y por su generosa contribución a la configuración teórica y académica de la Antropología como disciplina autónoma en la Universidad española. Es cierto que durante las últimas décadas James Fernández ha centrado su atención antropológica y su trabajo de campo en España, y más concretamente en Asturias, la tierra de sus antepasados, pero también lo es que su dilatada y brillante carrera como antropólogo comenzó en Africa, que su primera y principal investigación etnográfica se centró en los Fang de Gabón y que su obra más conocida y citada, que le ha hecho disfrutar merecidamente de un lugar de honor en la historia de la antropología, es BWITI. An Ethnography of the Religious Imagination in Africa (Princeton University Press, 1982). Por ese motivo, los pocos antropólogos que, en España y en la UNED, hemos centrado en Africa –y más en concreto, en Guinea Ecuatorial, limítrofe con Gabón- nuestra investigación etnográfica durante las últimas décadas, para quienes la obra enciclopédica de James Fernández sobre la cultura fang y el Bwiti (cf. Bibliografía) constituye un punto de referencia ineludible y que siempre hemos encontrado en él, a pesar de su relativo distanciamiento de la problemática africana desde hace ya algunas décadas, una amable acogida y solícita respuesta a nuestras dudas y preguntas, no podíamos dejar pasar esa ocasión sin aprovecharla para impulsar las investigaciones y estudios sobre Africa en España y en la UNED. En respuesta a nuestros insistentes requerimientos, James Fernández ha aceptado amablemente ayudarnos en ese empeño formando parte del Comité de Honor del Centro de Estudios Afro-Hispánicos recientemente aprobado por la UNED y respondiendo a la siguiente entrevista para este número de ENDOXA dedicado a “Nuevas Investigaciones sobre Guinea Ecuatorial”.
Francisco Macías: nuevo estado, nuevo ritual
Authors: Nerín Gustau 
Published: June 2016

El régimen de Francisco Macías en Guinea Ecuatorial (1968-1979) hadespertado controversias. Hay quien lo considera un ejemplo de políticas izquierdistas, otros lo enmarcan dentro del fascismo; para algunos sería un reflejo claro del régimen franquista, para otros la producción fantasiosa de una mente enferma. A través del análisis de los rituales desarrollados por el régimen macista, se trata de elucidar qué elementos contribuyeron a la creación de éste.
Perspectivas diversas sobre el MVET y reivindicación filológica de su carácter épico
Authors: Ñengono Nguema Bindang Verónica 
Published: June 2016

La primera parte de este artículo pasa revista a los distintos estudiossobre el Mvet realizados en Gabón, Camerún y Guinea Ecuatorial durante las últimas décadas y desde diferentes perspectivas teóricas y académicas o disciplinares: filológica, antropológica, filosófica, histórica, esotérica, etc. En la segunda parte se intenta justificar la perspectiva filológica elegida y la legitimidad epistemológica de la atribución al Mvetde un carácter épico.
Nsoa (“dote”), dinero, deuda y peonaje: cómo el parentesco fang tejió y destejió la economía colonial de la Guinea española
Authors: Martino Martín Enrique 
Published: June 2016

Utilizando nuevo material de archivo y revisando las etnografías existentes, intento mostrar cómo en la Guinea Española la fusión o casi perfecta articulación entre la “economía deudora” de los pagos matrimoniales Fang (“riqueza de la novia”) y la “economía crediticia” del reclutamiento colonial de trabajadores por los finqueros españoles acreedores entre 1928 y 1940 condujo a que casi 25,000 varones Fang de Río Muni, Gabón y Camerún fueran reclutados, pagados con un anticipo y descargados en las plantaciones de la isla de Fernando Póo con contratos de dos o tres años. El rápido desarrollo de esta constelación de reclutamiento se puede explicar, ateniéndose a losparadigmas teóricos vigentes, como una “articulación de modos de producción”; pero no puede explicarse así su colapso repentino. Los componentes y direcciones, la inscripción y circulación de los pagos matrimoniales Fang -del nsoa o “dote”249- tejieron los mimbres de la economía colonial española basada en el reclutamiento de mano de obra con contratos de peonaje endeudado, pero asimismo, subsecuentemente, los destejieron.
El proyecto con agentes nativos de la misión jamaicana en Fernando Póo: su herencia colonial
Authors: Castillo Rodríguez Susana 
Published: June 2016

La obra de teatro de Philip. J. Fisher The Island Heritage. Episodes from the Missionary History of Fernando Poo, West Africa. A Play for Young People (1926) ha permanecido incógnita en los estudios sobre Guinea Ecuatorial. Su importancia reside, según argumentamos en este artículo, no solo en este hecho sino en lo que nos revela sobre el establecimiento de la Misión de la Sociedad Baptista Jamaicana en Fernando Póo entre 1842 y 1845. Retomando los análisis de Bela Vassady (1979) y Dekar (2001), en este artículo se discutirá el papel de los “agentes nativos” jamaicanos en el proyecto misionero baptista y sus consecuencias para la expansión colonial británica al interior del continente africano.
El internamiento de los colonos alemanes del Camerún en la Guinea Española (1915-1919)
Authors: González Calleja Eduardo 
Published: June 2016

El territorio español que sufrió más de cerca los avatares de la guerranaval y terrestre y las tensiones diplomáticas derivadas de la Primera Guerra mundial fueron las posesiones de Guinea. El artículo relata los esfuerzos de las autoridades — especialmente el gobernador general Ángel Barrera Luyando— por salvaguardar la integridad territorial de la colonia, evitando las incursiones de uno y otro bando, y los problemasplanteados por los miles de alemanes y nativos que buscaron refugio en Guinea y luego en la Península tras la ocupación aliada del Camerún a inicios de 1916.
Conception et étude du potentiel d’un dispositif muséo-techno-didactique pour le raisonnement en sciences humaines d’élèves québécois de 5e année du primaire
Authors: Larouche Marie-Claude , Landry Nicole , Fillion Pierre-Luc 
Published: June 2016

Nous traitons de la conception et de l’étude du potentiel d’un dispositif muséo-techno-didactique, parties prenantes d’une recherche-développement réalisée en collaboration avec le Musée McCord et des enseignants d’écoles primaires montréalaises. Le dispositif mis à l’essai tire profit de l’expositionMontréal —Points de vue, des ressources numériques de l’institution et d’une récente application pour technologie mobile. À la suite d’entretiens semi-dirigés réalisés auprès de dyades d’élèves de quatre classes de 5eannée, nous étudions le potentiel de ce dispositif sous l’angle du raisonnement verbal en sciences humaines. Si une bonne compréhension de l’interdépendance de l’organisation sociale et du territoire se manifeste dans des segments explicatifs, les résultats obtenus doivent être replacés dans le contexte d’une implication des enseignants allant bien au-delà du temps scolaire habituellement consenti à ce domaine disciplinaire.
Growth and optical properties of Nb-doped WS2 monolayers
Authors: Sasaki Shogo , Kobayashi Yu , Liu Zheng , Suenaga Kazutomo , Maniwa Yutaka , Miyauchi Yuhei , Miyata Yasumitsu 
Published: June 2016

Abstract
We report the chemical vapor deposition growth of Nb-doped WS2 monolayers and their characterization. Electron microscopy observations reveal that the Nb atom was substituted at the W site at a rate of approximately 0.5%. Unlike Mo doping, Nb-doped samples have photoluminescence (PL) peaks at 1.4–1.6 eV at room temperature. The peak energies are lower than the optical bandgap of 1.8 eV, and a saturation behavior of PL intensity is observed with the increase in excitation power. These results indicate that the observed PL peaks are assignable to the emission from impurity states generated by the substitution of Nb.
Temperature dependence of magnetoresistance in GdFeCo/Pt heterostructure
Authors: Okuno Takaya , Kim Kab-Jin , Tono Takayuki , Kim Sanghoon , Moriyama Takahiro , Yoshikawa Hiroki , Tsukamoto Arata , Ono Teruo 
Published: June 2016

Abstract
The temperature dependence of magnetoresistance is investigated in ferrimagnetic GdFeCo/Pt heterostructures. An anomalous Hall effect (AHE) shows a monotonic behavior in temperature even across the magnetization compensation temperature T
M, implying that the FeCo moment is responsible for the magnetotransport properties. An anisotropic magnetoresistance (AMR) exhibits a steep increase at low temperatures, which we ascribe to the contribution of a weak antilocalization in an amorphous GdFeCo layer. A spin Hall magnetoresistance (SMR) is found to exist in ferrimagnet/Pt systems and shows a moderate temperature dependence, in contrast to the SMR in YIG/Pt where a significant temperature dependence was observed. These results provide a basic understanding of the magnetotransport in amorphous ferrimagnets/heavy metal heterostructures.
Self-formation of ultrahigh-density (1012 cm−2) InAs quantum dots on InAsSb/GaAs(001) and their photoluminescence properties
Authors: Sameshima Kazuki , Sano Takuya , Yamaguchi Koichi 
Published: June 2016

Abstract
InAs quantum dots (QDs) with an ultrahigh density of 1 × 1012 cm−2 were fabricated on a 1.25-monolayer-thick InAsSb wetting layer on a GaAs(001) substrate by molecular beam epitaxy. QD formation was initiated by small two-dimensional InAsSb islands. Coalescence and ripening effects involving neighboring QDs were suppressed. Photoluminescence spectra of the QDs shifted continuously to higher energies with increased optical excitation power. This was attributed to the filling of inhomogeneous ground states via tunneling between QDs. Indirect transitions in a type-II band structure were observed for small QDs. In large QDs, direct transitions were also observed at high optical excitation levels.
Self-ordered nanotube formation from nickel oxide via submerged arc in water
Authors: Suntornlohanakul Tatporn , Sano Noriaki , Tamon Hajime 
Published: June 2016

Abstract
A partially H-terminated nickel oxide nanotube is firstly realized by transformation from NiO via a method using submerged arc in water. The diameter of this nanotube is less than 5 nm, and its wall is atomically thin. It is speculated that the decomposition of NiO at a hot-temperature arc plasma followed by hydrogenation in a bubble generates NiOOH, known as a layer structure, and the asymmetric H-termination on its surface causes self-curling, resulting in nanotube formation. A molecular mechanics calculation indicates that the energetically favorable structure has H atoms at the inner side of nanotubes.