bluuebunny/crossref_metadata_2025_split huggingface dataset:
ENGAJAMENTO, PLANEJAMENTO E EXPERIÊNCIAS DE VIAGEM COMPARTILHADOS NAS REDES SOCIAIS
Authors: ZUCCO Fabricia Duriuex , BAHR Giselle , LIMBERGER Pablo Flôres 
Published: August 2018

As redes sociais são, na atualidade, uma das principais ferramentas de promoção do turismo no Brasil. A proposta desse artigo é analisar o engajamento, o planejamento e as experiências de viagens, compartilhados nas redes sociais virtuais. Realizou-se uma pesquisa quantitativa que utiliza, como procedimentos técnicos, a revisão bibliográfica, a pesquisa de survey com a escala Likert de sete pontos. Inicialmente, para o compartilhamento de experiências de viagens online, as dimensões compreendidas foram formadas de acordo com a teoria de Jacobsen e Munar (2014) e, para o planejamento de viagens, com as de Parra-López et al (2011). Com a finalidade de obter maior compreensão do modelo, foi realizada uma análise de modelagem equacional e uma análise fatorial. A coleta de dados, desse objeto de pesquisa, realizou-se no ambiente online, por meio de um questionário de preenchimento automático. Esse trabalho contribui para a avaliação das características de engajamento, de planejamento e das experiências de viagens compartilhados nas redes sociais virtuais e revela que os fatores: utilitário, planejamento e social têm forte relação com o compartilhamento, no qual o fator “utilitário” é o preponderante.
México: el neoliberalismo fracasa y la apertura comercial estalla
Authors: Rey Romay Benito 
Published: August 2018

La grave situación actual de la economía mexicana proviene de dos crisis simultáneas: la del modelo neoliberal implantado desde hace doce años y su endurecimiento en los últimos seis, y la de la nueva forma de inserción del país en el ámbito y comercio internacional; para ambas se destacan los elementos característicos más trascendentes. El autor propone también medidas básicas de corrección, algunas de ellas drásticas y contrarias al programa gubernamental anticrisis divulgado y operado por el nuevo gobierno. Al final señala, o advierte, una separación paulatina y perversa de la racionalidad gubernamental respecto de la de los demás agentes de la economía.
Eficiencia energética y privatización de la Industria Eléctrica
Authors: Sheinbaum Claudia , Rodríguez Viqueira Luis 
Published: August 2018

En este artículo se analizan las posibilidades de conservación y eficiencia como una opción a la privatización en la generación de electricidad; con base en un análisis de las características históricas de la oferta y de las tendencias en el uso de la demanda de electricidad para los diversos sectores económicos, se detallan las posibles medidas de eficiencia como respuesta al crecimiento acelerado de la oferta.
Hacia la construcción de nuevos enfoques sobre globalización y crisis
Authors: Huerta Moreno Ma. Guadalupe , Kato Maldonado Luis 
Published: August 2018

<div>En este artículo se analiza la enorme crisis financiera actual a la luz de conceptos como incertidumbre, renta de la tierra y centralización de capitales. Categorías analíticas que no son relevantes para la economía neoclásica y están presentes en el funcionamiento del sistema financiero ligado a la etapa más reciente de la globalización financiera. En la que se formó una red de intermediación sostenida por innovaciones financieras (en productos y procesos) donde el capital dinerario se canalizó a operaciones especulativas en detrimento del sector real. Al estallar la burbuja especulativa se abrieron nuevos flancos para el debate económico: en el terreno teórico, cuestionando las propuestas previas de análisis y prevención de crisis; respecto del papel del Estado para revertir el estancamiento económico resultante de la crisis y en relación con las políticas que implementará en el sistema financiero.</div>
Pemanfaatan E-book sebagai Sumber Belajar Mandiri bagi Siswa SMA/SMK/MA
Authors: Suryani Ela , Khoiriyah Ika Silfiana Arifatul 
Published: August 2018

Kegiatan pengabdian kepada masyarakat di SMA/SMK/MA ditujukan untuk mensosialisasikan pemanfaatan e-book kepada siswa kelas XII. E-book sebagai sumber belajar mandiri sehingga siswa mampu memperdalam materi secara mandiri apabila terjadi kekurangan jumlah tatap muka yang dilakukan guru dan siswa tidak memiliki buku cetak mata pelajaran yang lengkap.Metode pelaksanaan yang digunakan adalah presentasi, brainstorming, dan sharing tentang e-book kepada siswa kelas XII pada jenjang pendidikan sekolah menengah atas. Kegiatan PkM ini dilaksanakan melalui sosialisasi, pendampingan, dan monitoring dan evaluasi.Pelaksanaan PkM pemanfaatan e-book kepada siswa kelas XII SMA N 1 Pabelan dan SMK Kanaan mampu meningkatkan pemahaman terhadap e-book yang ditandai dengan persentase indikator ketercapaian memahami e-book (93%), mengunduh e-book (51%), dan menggunakan e-book (80%). Tanggapan positif dari siswa kelas XII SMA N 1 Pabelan dan SMK Kanaan terhadap pelaksanaan kegiatan PkM ini tergolong sangat baik. Hal ini dapat dilihat dari indikator kehadiran peserta PkM mencapai 98% dari target dan selama kegiatan berlangsung peserta sangat antusias mengikuti kegiatan dari awal sampai akhir kegiatan.
La influencia del currículum oculto en la formación de los estudiantes
Authors: Aguilar del Castillo Mª Carmen 
Published: August 2018

El centro o los centros formativos previos a la Universidad en los que se han formado los estudiantes, además de transmitir las materias necesarias para que éstos puedan acceder a la educación superior, incorporan un conjunto de reglas y normas que rigen la vida escolar, sentimientos, formas de expresarlos, valores, formas de comportamiento y adaptación a distintos ámbitos. Es lo que se conoce como el Currículum Oculto.
El trabajo que presentamos surge como consecuencia de la aparición en el grado de Finanzas y Contabilidad y del grado de Relaciones Laborales de sendas asignaturas optativas especialmente singulares pues son impartidas por distintas áreas de conocimiento.
Tras un estudio en el que sometemos a los mismos contenidos, metodologías de trabajo y sistema de evaluación comprobamos cómo, de manera consistente a lo largo de los cursos, el modo de razonar a la hora de enfrentarse los estudiantes a la resolución de los mismos casos es diferente y siempre en el mismo sentido. Mientras que los estudiantes del Grado de Relaciones Laborales se centraban en la defensa de los derechos de los trabajadores supeditada a la rentabilidad de la empresa, los estudiantes de Finanzas y Contabilidad priorizaba la supervivencia de las empresas a las derechos y condiciones de los empleados en las mismas.
Identification of Chemical Composition and Antibacterial Properties Juniperus oxycedrus L. subsp. oxycedrus Leaf Essential Oil
Authors: OKUT Neşe , YILDIRIM Bünyamin , EKİCİ Kamil , TERZİOĞLU Ömer , ÖZGÖKÇE Fevzi 
Published: August 2018

The constituents of leaf essential oil of Juniperus
oxycedrus L. subsp. oxycedrus
(JOO) from wild
flora of Gevas-Van in Turkey (Mount Artos)
were studied using Gas
Chromatography-Mass Spectrometry (GC-MS) and their antibacterial activities
were assessed. A total of 18
compounds representing 99.98% of leaves oil were identified. The oils of the plant
are all dominated by monoterpenes. The main compounds of essential oil in
leaves were Limonene (45.77%),
α-Pinene (23.94%), β-Phellandrene (10.83%), β-Pinene (5.68%), o-Cymene (3.30%),
respectively. The essential oils were tested against Staphylacoccus aureus, Bacillus
subtilis, Pseudomanas aeruginosa, Enterecoccus
faecalis, Salmonella typhimurium,
and Escherichia coli strains using
the disc diffusion method. The
diameter of the inhibition zones formed for bacteria were measured. The
essential oils of JOO found to be active against all of the tested
microorganisms and showed the susceptible inhibition zones. However, they were
not as much as effective against bacterial strains when compared to ampicillin
and ofloxacin. The extracts of JOO showed
most significant antibacterial activity against Escherichia coli with inhibition zone diameter of 15 mm. The lowest
inhibition zone diameter was Staphylococcus
aureus with 11 mm.
Community Targets of JWST’s Early Release Science Program: Evaluation of WASP-63b
Authors: Kilpatrick Brian M. , Cubillos Patricio E. , Stevenson Kevin B. , Lewis Nikole K. , Wakeford Hannah R. , MacDonald Ryan J. , Madhusudhan Nikku , Blecic Jasmina , Bruno Giovanni , Burrows Adam , Deming Drake , Heng Kevin , Line Michael R. , Morley Caroline V. , Parmentier Vivien , Tucker Gregory S. , Valenti Jeff A. , Waldmann Ingo P. , Bean Jacob L. , Beichman Charles , Fraine Jonathan , Krick J. E. , Lothringer Joshua D. , Mandell Avi M. 
Published: August 2018

Abstract
We present observations of WASP-63b by the Hubble Space Telescope (HST) as part of “A Preparatory Program to Identify the Single Best Transiting Exoplanet for James Webb Space Telescope (JWST) Early Release Science (ERS).” WASP-63b is one of the community targets under consideration for the JWST ERS program. We present a spectrum derived from a single observation by HST Wide Field Camera 3 in the near-infrared. We engaged groups across the transiting exoplanet community to participate in the analysis of the data and present results from each. Extraction of the transmission spectrum by several independent analyses find an H2O absorption feature with varying degrees of significance ranging from 1σ to 3σ. The feature, in all cases, is muted in comparison to a clear atmosphere at solar composition. The reasons for the muting of this feature are ambiguous due to a degeneracy between clouds and composition. The data does not yield robust detections of any molecular species other than H2O. The group was motivated to perform an additional set of retrieval exercises to investigate an apparent bump in the spectrum at ∼1.55 μm. We explore possible disequilibrium chemistry and find this feature is consistent with super-solar HCN abundance but it is questionable if the required mixing ratio of HCN is chemically and physically plausible. The ultimate goal of this study is to vet WASP-63b as a potential community target to best demonstrate the capabilities and systematics of JWST instruments for transiting exoplanet science. In the case of WASP-63b, the presence of a detectable water feature indicates that WASP-63b remains a plausible target for JWST observations.
The TESS Input Catalog and Candidate Target List
Authors: Stassun Keivan G. , Oelkers Ryan J. , Pepper Joshua , Paegert Martin , Lee Nathan De , Torres Guillermo , Latham David W. , Charpinet Stéphane , Dressing Courtney D. , Huber Daniel , Kane Stephen R. , Lépine Sébastien , Mann Andrew , Muirhead Philip S. , Rojas-Ayala Bárbara , Silvotti Roberto , Fleming Scott W. , Levine Al , Plavchan Peter 
Published: August 2018

Abstract
The Transiting Exoplanet Survey Satellite (TESS) will be conducting a nearly all-sky photometric survey over two years, with a core mission goal to discover small transiting exoplanets orbiting nearby bright stars. It will obtain 30 minute cadence observations of all objects in the TESS fields of view, along with two-minute cadence observations of 200,000–400,000 selected stars. The choice of which stars to observe at the two-minute cadence is driven by the need to detect small transiting planets, which leads to the selection of primarily bright, cool dwarfs. We describe the catalogs assembled and the algorithms used to populate the TESS Input Catalog (TIC), including plans to update the TIC with the incorporation of the Gaia second data release in the near future. We also describe a ranking system for prioritizing stars according to the smallest transiting planet detectable, and assemble a Candidate Target List (CTL) using that ranking. We discuss additional factors that affect the ability to photometrically detect and dynamically confirm small planets, and we note additional stellar populations of interest that may be added to the final target list. The TIC is available on the STScI MAST server, and an enhanced CTL is available through the Filtergraph data visualization portal system at the URL http://filtergraph.com/tess_ctl.
Improved Image Quality over 10′ Fields with the ʻImaka Ground-layer Adaptive Optics Experiment
Authors: Abdurrahman F. N. , Lu J. R. , Chun M. , Service M. W. , Lai O. , Föhring D. , Toomey D. , Baranec C. 
Published: August 2018

Abstract
ʻImaka is a ground-layer adaptive optics (GLAO) demonstrator on the University of Hawaii 2.2 m telescope with a 24′ × 18′ field of view, nearly an order of magnitude larger than previous AO instruments. In 15 nights of observing with natural guide star asterisms ∼16′ in diameter, we measure median AO-off and AO-on empirical FWHMs of 0.″95 and 0.″64 in R band, 0.″81 and 0.″48 in I band, and 0.″76 and 0.″44 at 1 μm. This factor of 1.5–1.7 reduction in the size of the point-spread function (PSF) results from correcting both the atmosphere and telescope tracking errors. The AO-on PSF is uniform out to field positions ∼5′ off-axis, with a typical standard deviation in the FWHM of 0.″018. Images exhibit variation in FWMM by 4.5% across the field, which has been applied as a correction to the aforementioned quantities. The AO-on PSF is also 10× more stable in time compared to the AO-off PSF. In comparing the delivered image quality to proxy measurements, we find that in both AO-off and AO-on data delivered image quality is correlated with ʻImaka’s telemetry, with R-band correlation coefficients of 0.68 and 0.70, respectively. At the same wavelength, the data are correlated to DIMM and MASS seeing with coefficients of 0.45 and 0.55, respectively. Our results are an essential first step to implementing facility-class, wide-field GLAO on Maunakea telescopes, enabling new opportunities to study extended astronomical sources, such as deep galaxy fields, nearby galaxies, or star clusters, at high angular resolution.
Near-infrared Mira Period–Luminosity Relations in M33
Authors: Yuan Wenlong , Macri Lucas M. , Javadi Atefeh , Lin Zhenfeng , Huang Jianhua Z. 
Published: August 2018

Abstract
We analyze sparsely sampled near-infrared (JHK

s
) light curves of a sample of 1781 Mira variable candidates in M33, originally discovered using I-band time-series observations. We extend our single-band semi-parametric Gaussian process modeling of Mira light curves to a multiband version and obtain improved period determinations. We use our previous results on near-infrared properties of candidate Miras in the LMC to classify the majority of the M33 sample into oxygen- or carbon-rich subsets. We derive period–luminosity relations for O-rich Miras and determine a distance modulus for M33 of 24.80 ± 0.06 mag.
A Robust Tip of the Red Giant Branch Distance to the Fireworks Galaxy (NGC 6946)
Authors: Anand Gagandeep S. , Rizzi Luca , Tully R. Brent 
Published: August 2018

Abstract
Archival HST data taken in F606W+F814W of two different fields in the outer regions of NGC 6946 is used to measure a tip of the red giant branch distance to the galaxy. We employ a Bayesian maximum-likelihood modeling method that incorporates the completeness of the photometry, and allows us to model the luminosity function of the RGB population. Our two fields provide us with distances of 7.74 ± 0.42 Mpc and 7.69 ± 0.50 Mpc, respectively. Our final distance of 7.72 ± 0.32 Mpc is higher than most values previously published in the literature. This has important implications for supernova measurements, as NGC 6946 is host to the most observed supernovae (10) of any galaxy to date. We find that the supernovae in NGC 6946 are on average ∼2.3 times more luminous than previous estimates. Our distance gives NGC 6946 a peculiar velocity of v
pec = −229 ± 29 km s−1 in the Local Sheet frame. This velocity is the projected component of a substantial negative SGZ motion, indicating a coherent motion along with the other members of the M101 wall toward the plane of the Local Sheet. The M101 wall, a spur off the Local Sheet into the Local Void, is experiencing the expansion of the Local Void.
A Novel Investigation of the Small-scale Magnetic Activity of the Quiet Sun via the Hanle Effect in the Sr i 4607 Å Line
Authors: del Pino Alemán T. , Trujillo Bueno J. , Štěpán J. , Shchukina N. 
Published: August 2018

Abstract
One of the key research problems in stellar physics is to decipher the small-scale magnetic activity of the quiet solar atmosphere. Recent magneto-convection simulations that account for small-scale dynamo action have provided three-dimensional (3D) models of the solar photosphere characterized by a high degree of small-scale magnetic activity, similar to that found through theoretical interpretation of the scattering polarization observed in the Sr i 4607 Å line. Here we present the results of a novel investigation of the Hanle effect in this resonance line based on 3D radiative transfer calculations in a high-resolution magneto-convection model having most of the convection zone magnetized close to the equipartition and a surface mean field strength

G. The Hanle effect produced by the model’s magnetic field depolarizes the zero-field scattering polarization signals significantly, to the extent that the center-to-limb variation (CLV) of the calculated spatially averaged polarization amplitudes is compatible with the observations. The standard deviation of the horizontal fluctuations of the calculated scattering polarization signals is very sensitive to the model’s magnetic field, and we find that the predicted spatial variations are sufficiently sizable so as to be able to detect them, especially with the next generation of solar telescopes. We find that at all on-disk positions, the theoretical scattering polarization signals are anticorrelated with the continuum intensity. To facilitate reaching new observational breakthroughs, we show how the theoretically predicted polarization signals and spatial variations are modified when deteriorating the signal-to-noise ratio and the spectral and spatial resolutions of the simulated observations.
Measurements of Diffusion of Volatiles in Amorphous Solid Water: Application to Interstellar Medium Environments
Authors: He Jiao , Emtiaz SM , Vidali Gianfranco 
Published: August 2018

Abstract
The diffusion of atoms and molecules in ices covering dust grains in dense clouds in interstellar space is an important but poorly characterized step in the formation of complex molecules in space. Here we report the measurement of diffusion of simple molecules in amorphous solid water (ASW), an analog of interstellar ices, which are amorphous and made mostly of water molecules. The new approach that we used relies on measuring, in situ, the change in band strength and position of mid-infrared features of OH dangling bonds as molecules move through pores and channels of ASW. We obtained the Arrhenius pre-exponents and activation energies for diffusion of CO, O2, N2, CH4, and Ar in ASW. The diffusion energy barrier of H2 and D2 were also measured, but only upper limits were obtained. These values constitute the first comprehensive set of diffusion parameters of simple molecules on the pore surface of ASW and can be used in simulations of the chemical evolution of Interstellar Medium environments, thus replacing unsupported estimates. We also present a set of argon temperature programmed desorption experiments to determine the desorption energy distribution of argon on non-porous ASW.
Is AlOH the Astrochemical Reservoir Molecule of AlO?: Insights from Excited Electronic States
Authors: Trabelsi Tarek , Francisco Joseph S. 
Published: August 2018

Abstract
Very recently, the optical bands of the 2Σ+ ← X2Σ+system of AlO have been identified in the red supergiant star VYCMa. In an effort to explain the origin of this transition, we used state-of-the-art quantum chemical calculations with proven high accuracy to compute the lowest singlet and triplet electronic states of the AlOH and HAlO isomers as well as their equilibrium geometry and electronic properties. Our calculated potential energy surfaces implicate the three singlet electronic states 21A′, 31A′, and 11A″ in the photodissociation of the [Al,O,H] system. Only AlO, H, Al, and OH products can occur through the photodissociation of [Al,O,H]; AlH and O are not allowed. For the photodissociation of AlOH, the AlO product can occur only in its excited states AlO(2Π) and AlO(2Σ+).
Gravitational Waves from Supermassive Black Hole Binaries in Ultraluminous Infrared Galaxies
Authors: Inayoshi Kohei , Ichikawa Kohei , Haiman Zoltán 
Published: August 2018

Abstract
Gravitational waves (GWs) in the nanohertz band are great tools for understanding the cosmological evolution of supermassive black holes (SMBHs) in galactic nuclei. We consider SMBH binaries in high-z ultraluminous infrared galaxies (ULIRGs) as sources of a stochastic GW background (GWB). ULIRGs are likely associated with gas-rich galaxy mergers containing SMBHs that possibly occur at most once in the life of galaxies, unlike multiple dry mergers at low redshift. Adopting a well-established sample of ULIRGs, we study the properties of the GWB due to coalescing binary SMBHs in these galaxies. Since the ULIRG population peaks at z > 1.5, the amplitude of the GWB is not affected even if BH mergers are delayed by as long as ∼10 Gyr. Despite the rarity of the high-z ULIRGs, we find a tension with the upper limits from pulsar timing array experiments. This result suggests that if a fraction

of ULIRGs are associated with SMBH binaries, then no more than

of the binary SMBHs in ULIRGs can merge within a Hubble time, for plausible values of the Eddington ratio of ULIRGs (λ
Edd) and their lifetime (t
life).
Analyse spatiale multicritère et identification des sols propices à la production du maïs à Ouessè au Bénin
Authors: Adimi Olatondji Salomon Chabi , Oloukoi Joseph , Tohozin Côovi Aimé Bernadin 
Published: August 2018

Au Bénin, le maïs occupe une place prépondérante dans le tissu productif. Il constitue le principal aliment de base de toute la partie méridionale du pays soit les 2/3 de la population nationale. Malgré cette importance, son développement rencontre d’énormes difficultés. La présente étude vise à contribuer à une amélioration de la production du maïs dans la commune de Ouessè au Bénin. La méthodologie utilisée est basée sur les techniques des SIG couplées avec les méthodes d’analyse multicritère à partir des données des composantes physico-chimiques du sol. Les résultats obtenus révèlent que la commune de Ouessè présente un niveau d’aptitude des sols élevé à la production du maïs. Elle totalise environ 9,67 % de zone moyennement apte, 17,73 % de zone d’aptitude élevée et 72,62 % de zone d’aptitude très élevée.