bluuebunny/crossref_metadata_2025 huggingface dataset:
Late-time UV Observations of Tidal Disruption Flares Reveal Unobscured, Compact Accretion Disks∗
Authors: van Velzen Sjoert , Stone Nicholas C. , Metzger Brian D. , Gezari Suvi , Brown Thomas M. , Fruchter Andrew S.
Published: June 2019

The origin of thermal optical and UV emission from stellar tidal disruption flares (TDFs) remains an open question. We present Hubble Space Telescope far-UV (FUV) observations of eight optical/UV-selected TDFs 5–10 yr post-peak. Six sources are cleanly detected, showing point-like FUV emission (

) from the centers of their host galaxies. We discover that the light curves of TDFs from low-mass black holes (<106.5
M
⊙) show significant late-time flattening. Conversely, FUV light curves from high-mass black hole TDFs are generally consistent with an extrapolation from the early-time light curve. The observed late-time emission cannot be explained by existing models for early-time TDF light curves (i.e., reprocessing or circularization shocks), but is instead consistent with a viscously spreading, unobscured accretion disk. These disk models can only reproduce the observed FUV luminosities, however, if they are assumed to be thermally and viscously stable, in contrast to the simplest predictions of α-disk theory. For one TDF in our sample, we measure an upper limit to the UV luminosity that is significantly lower than expectations from theoretical modeling and an extrapolation of the early-time light curve. This dearth of late-time emission could be due to a disk instability/state change absent in the rest of the sample. The disk models that explain the late-time UV detections solve the TDF “missing energy problem” by radiating a rest-mass energy of ∼0.1 M
⊙ over a period of decades, primarily in extreme UV wavelengths.
SDSS J075101.42+291419.1: A Super-Eddington Accreting Quasar with Extreme X-Ray Variability
Authors: Liu Hezhen , Luo B. , Brandt W. N. , Brotherton Michael S. , Du Pu , Gallagher S. C. , Hu Chen , Shemmer Ohad , Wang Jian-Min
Published: June 2019

We report the discovery of extreme X-ray variability in a type 1 quasar: SDSS J075101.42+291419.1. It has a black hole (BH) mass of 1.6 × 107
M
⊙ measured from reverberation mapping, and the BH is accreting with a super-Eddington accretion rate. Its XMM-Newton observation in 2015 May reveals a flux drop by a factor of ∼22 with respect to the Swift observation in 2013 May when it showed a typical level of X-ray emission relative to its UV/optical emission. The lack of correlated UV variability results in a steep X-ray-to-optical power-law slope (α
OX) of −1.97 in the low X-ray flux state, corresponding to an X-ray weakness factor of 36.2 at rest-frame 2 keV relative to its UV/optical luminosity. The mild UV/optical continuum and emission-line variability also suggest that the accretion rate did not change significantly. A single power-law model modified by Galactic absorption describes the 0.3–10 keV spectra of the X-ray observations well in general. The spectral fitting reveals steep spectral shapes with Γ ≈ 3. We search for active galactic nuclei (AGNs) with such extreme X-ray variability in the literature and find that most of them are narrow-line Seyfert 1 galaxies and quasars with high accretion rates. The fraction of extremely X-ray variable objects among super-Eddington accreting AGNs is estimated to be ≈15%–24%. We discuss two possible scenarios, disk reflection and partial covering absorption, to explain the extreme X-ray variability of SDSS J075101.42+291419.1. We propose a possible origin for the partial covering absorber, which is the thick inner accretion disk and its associated outflow in AGNs with high accretion rates.
Quasi-periodic Pulsations before and during a Solar Flare in AR 12242
Authors: Chen Xingyao , Yan Yihua , Tan Baolin , Huang Jing , Wang Wei , Chen Linjie , Zhang Yin , Tan Chengming , Liu Donghao , Masuda Satoshi
Published: June 2019

Quasi-periodic pulsations (QPPs) are frequently observed in solar flares, which may reveal some essential characteristics of both thermal and nonthermal energy releases. This work presents multi-wavelength imaging observations of an M8.7 flare in active region AR 12242 on 2014 December 17. We found that there were three different QPPs: UV QPPs with a period of about 4 minutes at 1600 Å images near the center of the active region lasting from the preflare phase to the impulsive phase; EUV QPPs with a period of about 3 minutes along the circular ribbon during the preflare phase; and radio QPPs with a period of about 2 minutes at frequencies of 1.2–2.0 GHz around the flaring source region during the impulsive phase. The observations include the radio images observed by the Mingantu Spectral Radioheliograph in China at frequencies of 1.2–2.0 GHz for the first time, microwave images by the Nobeyama Radioheliograph, UV and EUV images by AIA/SDO, and a magnetogram by HMI/SDO. We suggest that the 4 minute UV QPPs should be modulated by the sunspot oscillations, and the 3 minute EUV QPPs are closely related to the 2 minute radio QPPs for their source regions connected by a group of coronal loops. We propose that the intermittent magnetic reconnecting downward and upward plasmoids may be the possible trigger of both the preflare 3 minute EUV QPPs and the impulsive 2 minute radio QPPs. The other possible mechanism is LRC oscillation, which is associated with the current-carrying coronal loops. The latter mechanism implies that the existence of preflare QPPs may be a possible precursor to solar flares.
Secondary Radio and X-Ray Emissions from Galaxy Mergers
Authors: Yuan Chengchao , Murase Kohta , Mészáros Peter
Published: June 2019

Shocks arising in galaxy mergers could accelerate cosmic-ray (CR) ions to TeV–PeV energies. While propagating in the intergalactic medium, these CRs can produce high-energy neutrinos, electron–positron pairs, and gamma-rays. In the presence of intergalactic magnetic fields, the secondary pairs will radiate observable emissions through synchrotron radiation and inverse Compton scattering. In this paper, we demonstrate that these emissions can explain the radio and X-ray fluxes of merging galaxies such as NGC 660 and NGC 3256. Using our model in combination with the observations, we can constrain the gas mass, shock velocity, magnetic field, and the CR spectral index s of these systems. For NGC 660, a single-zone model with a spectral index 2.1 ≲ s ≲ 2.2 is able to simultaneously reproduce the radio and X-ray observations, while a simple one-zone scenario with s ∼ 2 can describe the radio and a large fraction of X-ray observations of NGC 3256. Our work provides a useful approach for studying the dynamics and physical parameters of galaxy mergers, which can play an important part in future multimessenger studies of similar and related extragalactic sources.
A Direct Probe of Mass Density near Inspiraling Binary Black Holes
Authors: Randall Lisa , Xianyu Zhong-Zhi
Published: June 2019

Now that LIGO has revealed the existence of a large number of binary black holes (BHs), identifying their origin has emerged as an important challenge. Observed binary BHs might reside in more isolated regions of the galaxy or alternatively they might be emerging from dense environments such as galactic centers or globular clusters. In the latter case, their center of mass motion as well as their orbital parameters lead to potentially observable changes in the waveforms that would reflect their gravitational interactions with the surrounding matter. The gravitational wave signal would be distinguished by a net phase change or even a time-dependent Doppler shift arising from the orbital motion. We show that this time-dependence might be observable in future space gravitational wave detectors such as LISA that could provide direct information about the BH binary environments and otherwise invisible ambient mass.
A 3 mm Spectral Line Survey toward the Barred Spiral Galaxy NGC 3627
Authors: Watanabe Yoshimasa , Nishimura Yuri , Sorai Kazuo , Sakai Nami , Kuno Nario , Yamamoto Satoshi
Published: June 2019

We conduct spectral line survey observations in the 3 mm band toward a spiral arm, a bar-end, and a nuclear region of the nearby barred spiral galaxy NGC 3627 with the IRAM 30 m telescope and the Nobeyama 45 m telescope. Additional observations are performed toward the spiral arm and the bar-end in the 2 mm band. We detect 8, 11, and 9 molecular species in the spiral arm, the bar-end, and the nuclear region, respectively. Star formation activities are different among the three regions, and in particular, the nucleus of NGC 3627 is known as a low-ionization nuclear emission region/Seyfert 2 type nucleus. In spite of these physical differences, the chemical composition shows impressive similarities among the three regions. This result means that the characteristic chemical composition associated with these regions is insensitive to the local physical conditions such as star formation rate, because such local effects are smeared out by extended quiescent molecular gas on scales of 1 kpc. Moreover, the observed chemical compositions are also found to be similar to those of molecular clouds in our Galaxy and the spiral arm of M51, whose elemental abundances are close to those in NGC 3627. Therefore, this study provides us with a standard template of the chemical composition of extended molecular clouds with the solar metallicity in nearby galaxies.
Submillimeter Continuum Variability in Planck Galactic Cold Clumps
Authors: Park Geumsook , Kim Kee-Tae , Johnstone Doug , Kang Sung-ju , Liu Tie , Mairs Steve , Choi Minho , Lee Jeong-Eun , Sanhueza Patricio , Juvela Mika , Kang Miju , Eden David , Soam Archana , Montillaud Julien , Fuller Gary A. , Koch Patrick M. , Lee Chang Won , Stamatellos Dimitris , Rawlings Jonathan , Kim Gwanjeong , Zhang Chuan-Peng , Kwon Woojin , Yoo Hyunju
Published: June 2019

In the early stages of star formation, a protostar is deeply embedded in an optically thick envelope such that it is not directly observable. Variations in the protostellar accretion rate, however, will cause luminosity changes that are reprocessed by the surrounding envelope and are observable at submillimeter wavelengths. We searched for submillimeter flux variability toward 12 Planck Galactic Cold Clumps detected by the James Clerk Maxwell Telescope (JCMT)-SCUBA-2 Continuum Observations of Pre-protostellar Evolution (SCOPE) survey. These observations were conducted at 850 

using the JCMT/SCUBA-2. Each field was observed three times over about 14 months between 2016 April and 2017 June. We applied a relative flux calibration and achieved a calibration uncertainty of ∼3.6% on average. We identified 136 clumps across 12 fields and detected four sources with flux variations of ∼30%. For three of these sources, the variations appear to be primarily due to large-scale contamination, leaving one plausible candidate. The flux change of the candidate may be associated with low- or intermediate-mass star formation assuming a distance of 1.5 kpc, although we cannot completely rule out the possibility that it is a random deviation. Further studies with dedicated monitoring would provide a better understanding of the detailed relationship between submillimeter flux and accretion rate variabilities while enhancing the search for variability in star-forming clumps farther away than the Gould Belt.
Graph Database Solution for Higher-order Spatial Statistics in the Era of Big Data
Authors: Sabiu Cristiano G. , Hoyle Ben , Kim Juhan , Li Xiao-Dong
Published: June 2019

We present an algorithm for the fast computation of the general N-point spatial correlation functions of any discrete point set embedded within an Euclidean space of

. Utilizing the concepts of kd-trees and graph databases, we describe how to count all possible N-tuples in binned configurations within a given length scale, e.g., all pairs of points or all triplets of points with side lengths < r
MAX. Through benchmarking, we show the computational advantage of our new graph-based algorithm over more traditional methods. We show measurements of the three-point correlation function up to scales of ∼200 Mpc (beyond the baryon acoustic oscillation scale in physical units) using current Sloan Digital Sky Survey (SDSS) data. Finally, we present a preliminary exploration of the small-scale four-point correlation function of 568,776 SDSS Constant (stellar) Mass (CMASS) galaxies in the northern Galactic cap over the redshift range of 0.43 < z < 0.7. We present the publicly available code GRAMSCI (GRAph Made Statistics for Cosmological Information; bitbucket.org/csabiu/gramsci), under a Gnu is Not Unix (GNU) General Public License.
Host plant associations in Western Palaearctic Longitarsus flea beetles (Chrysomelidae, Galerucinae, Alticini): a preliminary phylogenetic assessment
Authors: Salvi Daniele , D’Alessandro Paola , Biondi Maurizio
Published: June 2019

LongitarsusLatreille (Chrysomelidae, Galerucinae, Alticini) is a very large genus of phytophagous insects, with more than 700 species distributed in all zoogeographical regions. Patterns of host use have been a central topic in phytophagous insect research. In this study a first assessment is provided to test the hypothesis that host-plant association is phylogenetically conserved in Western PalaearcticLongitarsusspecies. Maximum Likelihood and Bayesian Inference methods were used to infer a phylogeny based on DNA sequence data from two mitochondrial genes from 52Longitarsusspecies from the Western Palaearctic. In agreement with the host phylogenetic conservatism hypothesis, a strict association between most of the recovered clades and specific plant families was found, except for species associated with Boraginaceae. Low phylogenetic resolution at deep nodes limited the evaluation of whether closely relatedLongitarsusclades are associated with the same plant family or to closely related plant families.
Adaptation of flea beetles to Brassicaceae: host plant associations and geographic distribution of Psylliodes Latreille and Phyllotreta Chevrolat (Coleoptera, Chrysomelidae)
Authors: Gikonyo Matilda W. , Biondi Maurizio , Beran Franziska
Published: June 2019

The cosmopolitan flea beetle generaPhyllotretaandPsylliodes(Galerucinae, Alticini) are mainly associated with host plants in the family Brassicaceae and include economically important pests of crucifer crops. In this review, the host plant associations and geographical distributions of known species in these genera are summarised from the literature, and their proposed phylogenetic relationships to other Alticini analysed from published molecular phylogenetic studies of Galerucinae. Almost allPhyllotretaspecies are specialised on Brassicaceae and related plant families in the order Brassicales, whereasPsylliodesspecies are associated with host plants in approximately 24 different plant families, and 50% are specialised to feed on Brassicaceae. The current knowledge on howPhyllotretaandPsylliodesare adapted to the characteristic chemical defence in Brassicaceae is reviewed. Based on our findings we postulate thatPhyllotretaandPsylliodescolonised Brassicaceae independently from each other.
Ruimtelijke mismatch, scholing en talenkennis in de Brusselse metropool: een analyse
Authors: Theys Tobias , Deschacht Nick , Adriaenssens Stef , Verhaest Dieter
Published: June 2019

Ruimtelijke mismatch, waarbij werkzoekenden niet wonen waar jobs te vinden zijn, kan een belangrijke barrière zijn op de arbeidsmarkt, vooral voor kwetsbare groepen. In deze studie bekijken we de rol die ruimtelijke mismatch speelt in de Brusselse metropool. Met behulp van een verbeterde maatstaf, de distance-weighted spatial mismatch index, die locatie-gedreven mismatch mee in rekening brengt, vergelijken we de ruimtelijke mismatch tussen de hoog- en laaggeschoolde arbeidsmarkt en de arbeidsmarkt voor laaggeschoolden met en zonder talenkennis. In de meest ruime definitie van de Brusselse metropool, tonen de resultaten een ruimtelijke mismatch die 50 % groter is voor laaggeschoolden, in vergelijking met hooggeschoolden. Voor laaggeschoolden zonder talenkennis is de ruimtelijke mismatch 115 % groter dan voor laaggeschoolden met talenkennis. Dit verschil komt hoofdzakelijk voort uit een relatief teveel aan laaggeschoolde werkzoekenden (zonder talenkennis) in het Brussels-Hoofdstedelijk Gewest en een relatieve tekort in de eerste gordel gemeenten rond het Gewest.
Mauvais appariement spatial, niveau de scolarité et connaissances linguistiques dans la métropole bruxelloise : une analyse
Authors: Theys Tobias , Deschacht Nick , Adriaenssens Stef , Verhaest Dieter
Published: June 2019

Le mauvais appariement spatial – les demandeurs d’emploi ne résident pas là où se trouvent les emplois – peut constituer une entrave importante sur le marché du travail, surtout pour les groupes vulnérables. Dans cette étude, nous examinons le rôle de cette inadéquation spatiale dans la métropole bruxelloise. À l’aide d’un indice de pondération amélioré, le distance-weighted spatial mismatch index, qui intègre l’inadéquation induite par la localisation, nous comparons le mauvais appariement spatial entre le marché de l’emploi hautement et faiblement qualifié et le marché de l’emploi faiblement qualifié avec et sans connaissances linguistiques. Au sens le plus large de la métropole bruxelloise, les résultats montrent un mauvais appariement spatial jusqu’à 50 % plus élevé pour les demandeurs d’emploi faiblement qualifiés par rapport aux hautement qualifiés. Pour les faiblement qualifiés sans connaissances linguistiques, il apparaît jusqu’à 115 % plus élevé par rapport aux faiblement qualifiés avec connaissances linguistiques. Cette différence découle principalement d’un excédent relatif de demandeurs d’emploi faiblement qualifiés (sans connaissances linguistiques) en Région de Bruxelles-Capitale et d’un déficit relatif dans les communes de la première ceinture autour de la Région.
A systematic review and meta-analysis of the genetic characterization of human echinococcosis in Iran, an endemic country
Authors: Siyadatpanah Abolghasem , Anvari Davood , Emami Zeydi Amir , Hosseini Seyed Abdollah , Daryani Ahmad , Sarvi Shahabeddin , Budke Christine M. , Esmaeelzadeh Dizaji Reza , Mohaghegh Mohammad Ali , Kohansal Mohammad Hasan , Dodangeh Samira , Saberi Reza , Gholami Shirzad
Published: June 2019

Human echinococcosis is an infectious disease caused by tapeworms belonging to the species Echinococcus. This parasite has a worldwide distribution and is considered a neglected tropical disease by the World Health Organization. Due to the diversity of Echinococcus spp. hosts, as well as variation in geographical, climatic, and socio-ethnic conditions, the question of the strains or genotypes of Echinococcus spp. that are involved in human infections is important. The aim of this study was to provide a summary of the available data on genotypes of Echinococcus obtained from the Iranian population. Four international databases (PubMed, Scopus, Science Direct, and Web of Science) and 4 Persian databases (Magiran, Scientific Information Database, Iran Medex, and IranDoc) were searched for cross-sectional studies that reported the genotypes of Echinococcus spp. in human echinococcosis cases using molecular methods in Iran through July 2018. The Newcastle-Ottawa Scale was used to assess the quality of the selected studies. A total of 559 cases of human cystic echinococcosis were reported in the 21 included articles. The majority of cases belonged to genotype G1 (89.2%; 95% confidence interval [CI], 80.1 to 95.8), genotype G6 (8.2%; 95% CI, 2.8 to 15.9), and genotype G3 (2.3%; 95% CI, 1.1 to 3.9). Since genotype G1 of Echinococcus appears to be the most prevalent genotype affecting humans in Iran, disease control initiatives aimed at sheep intermediate hosts may be the most beneficial. In addition, educational programs and serological screening in individuals may help reduce the national impact of the disease.
A 20-bp insertion/deletion (indel) polymorphism within the CDC25A gene and its associations with growth traits in goat
Authors: Cui Wenbo , Liu Nuan , Zhang Xuelian , Zhang Yanghai , Qu Lei , Yan Hailong , Lan Xianyong , Dong Wuzi , Pan Chuanying
Published: June 2019

Abstract. Cell division cycle 25A (CDC25A), a member of the CDC25 family of phosphatases, is
required for progression from G1 to the S phase of the cell cycle. CDC25A provides an essential function during early embryonic development in mice,
suggesting that it plays an important role in growth and development. In
this study, we used mathematical expectation (ME) methods to identify a
20-bp insertion/deletion (indel) polymorphism of CDC25A gene in Shaanbei White
Cashmere (SBWC) goats. We also investigated the association between this
20-bp indel and growth-related traits in SBWC goats. Association results
showed that the indel was related to growth traits (height at hip cross,
cannon circumference, and cannon circumference index) in SBWC goats. The
height at hip cross of individuals with insertion/insertion (II) genotype
was higher than those with insertion/deletion (ID) genotype (P=0.02); on
the contrary, the cannon circumference and cannon circumference index of
individuals with ID genotype were superior when compared with those with II
genotype (P=0.017 and P=0.009). These findings suggest that the 20-bp
indel in the CDC25A gene significantly affects growth-related traits, and could be
utilized as a candidate marker for marker-assisted selection (MAS) in
the cashmere goat industry.
Abiotic CO2 sources confound interpretation of temperature responses of in situ respiration in geothermally warmed forest soils of Iceland
Authors: Maljanen Marja , Yli-Moijala Heli , Sigurdsson Bjarni Didrik , Biasi Christina
Published: June 2019

Abstract. Carbon dioxide (CO2) efflux and δ13C in CO2 were measured along a natural geothermal soil temperature (Ts) gradient in upland Sitka spruce forest soil in a volcanic area in Iceland in July 2014 and 2016. The gradient that reaches from ambient soil temperature up to 40 °C warming at 10 cm depth was originally formed in May 2008, following a major earthquake. The CO2 efflux from the forest floor was measured using the static chamber method. In addition, subsurface soil CO2 concentrations and δ13C values of CO2 were studied. In summer 2014, soil surface CO2 efflux increased steadily with increasing soil temperature across a temperature gradient of 40 °C (from 260 to 3900 mg m−2 h−1). In 2016 the trend had changed; the maximum CO2 efflux (2100 mg m−2 h−1) was measured at 20 °C Ts warming and a similar nonlinear trend was observed in soil CO2 concentrations in 2016. The 13C isotope analysis of CO2 suggested that a proportion of the CO2 emitted from the warmer plots was geothermally derived. The plot with the highest geothermal source was different in 2014 and 2016, which explained the shift in the temperature dependence of the total CO2 efflux. Our study showed that a significant amount of CO2 emitted from the higher warming levels of geothermal temperature gradients can have non-biotic origin and this has to be taken into account when measuring respiration fluxes on such volcanic sites.
Congress Should Have an Interest in This Interest
Authors: Quinn Jared C.
Published: June 2019

Congress Should Have an Interest in This Interest
“Life in All Its Fullness”: Cardozo, Fellows, and the Critical Context of Welch v. Helvering
Authors: Mehrotra Ajay K.
Published: June 2019

“Life in All Its Fullness”: Cardozo, Fellows, and the Critical Context of Welch v. Helvering
Feminist Tax Judgments: Operationalizing Diversity
Authors: Abreu Alice G.
Published: June 2019

Feminist Tax Judgments: Operationalizing Diversity
United States v. Davis and Prof. Cain’s Rewritten Opinion: An Intersectional Argument for Capping Section 1041
Authors: Klein Diane
Published: June 2019

United States v. Davis and Prof. Cain’s Rewritten Opinion: An Intersectional Argument for Capping Section 1041
Feminist Judgments: Rewritten Tax Opinions—The Student Perspective
Authors: Cabezas Montano , King Brandon
Published: June 2019

Feminist Judgments: Rewritten Tax Opinions—The Student Perspective
Indicadores para constatar las expresiones de participación en la producción televisiva
Authors: Hernández Alfonso Eduardo Alejandro , Paz Enrique Luis Ernesto , Jara Solenzar Dunia Eduvijes , Caballero Ribacova María Teresa
Published: June 2019

El estudio de la participación en la producción televisiva local contempla las acciones que se efectúan como parte del proceso y los condicionamientos que inciden en la realización de la actividad. En la relación productores-audiencias se sustentan asimetrías a partir de la condición de los sujetos en la realización de la actividad. El verticalismo en la producción televisiva propicia programaciones con prácticas aisladas de los intereses de la agenda pública. Se plantearon como objetivos del estudio: 1) establecer los indicadores para constatar la participación en la producción televisiva, 2) validar los indicadores propuestos a partir de un estudio de caso en la producción televisiva del spot de bien público en el canal local Centro Norte Televisión de Caibarién, Cuba. El estudio clasifica como descriptivo con aporte metodológico. Para la obtención se emplearon métodos en los niveles teórico y empírico. Se destacó la técnica de revisión de documentos para alcanzar el objetivo de la investigación. En ocasiones las investigaciones en comunicación se limitan a estudios de audiencias o análisis de contenidos, pero no generan pesquisas globales que incluyan los condicionamientos que inciden en la dinámica productiva de los medios de comunicación local. La temática de la participación en los medios de comunicación y fundamentalmente en las televisoras locales, reviste gran importancia para los estudios en el campo de la sociología de la comunicación.
The concept and measurement of consumer value: agreements and disagreements
Authors:   Facultad de Economía. Departamento de Comercialización e Investigación de Mercados. Av. Tarongers s/n. Edif. Dep. Oriental, 46022. Valencia (España). martina.gallarza@uv.es, Gallarza Martina G. , Gil Saura Irene ,   Facultad de Economía. Departamento de Comercialización e Investigación de Mercados. Av. Tarongers s/n. Edif. Dep. Oriental, 46022. Valencia (España). irene.gil@uv.es, Arteaga Moreno Francisco ,   Department of Biostatistics and Investigation. Calle Quevedo nº 2, 46001. Valencia (España). francisco.arteaga@ucv.es
Published: June 2019

Studying the value concept turns out to be necessary and useful in Marketing because it is academically endemic and professionally relevant. However, despite decades of research, authors denounce a certain vicious circle of conceptual and methodological difficulties in Value research. This work reviews and categorizes these difficulties around agreements and controversies, it provides evidence of the complex nomological network that has been built in years around the value concept. Besides, empirically explores three causal models of relationships between dimensions of Value, Satisfaction and Loyalty, tested with PLS on a sample of 340 hotel customers. The results do not allow to conclude strongly which variable is best explained –Satisfaction or Loyalty– although it does confirm more robust effects of value dimensions (such as Entertainment) on Loyalty, when satisfaction mediates this relationship. We conclude, contextually for this study, on the existence of direct effects (doubled on both Satisfaction and Loyalty) on variable paths) for some Value dimensions and indirect of others in the chain Satisfaction-Loyalty. Managerial implications deriving from results point out the relevance of Entertainment (Play), Esteem, Efficiency, Aesthetics, Ethics and Escapism as key divers for hotel management strategy to enhance, through customer Value, both customer Satisfaction and Loyalty.
Proximity and Self-Correlation of Municipalities in the Republic of Benin
Authors: Hortensia ACACHA
Published: June 2019

The purpose of this study is to provide a detailed description of the spatial distribution of tax revenues, non-tax revenues and capital expenditures of the Communes in the Republic of Benin, to analyze the spatial interactions between the Commons and to deduce from them Communes with a strong neighborhood of spatial interaction.The methodological approach consisted in using a database, in the construction of an adjacency matrix that made it possible to conceptualize and take into account the neighborhood links. The degree of spatial dependence is captured from the global and local spatial indices of Moran.The main findings of the study indicate that the tax revenues and capital expenditures of the Commons are characterized by a random distribution. On the other hand, non-tax revenue is spatially self-correlated. However, local spatial analyzes reveal that some municipalities seem to be concentrating above average levels of tax revenue and investment spending in their neighborhoods. In addition, the analyzes revealed that the influence of the urbanization rate on the level of tax revenue, non-tax revenue and investment expenditure is barely perceptible. It is therefore necessary to review a better orientation of local development policies.
Las ciencias cognitivas: preámbulo para comprender el funcionamiento de los esquemas del ser humano
Authors: Escobar Soriano Álvaro Antonio
Published: June 2019

Varias generaciones de estudios de las ciencias cognitivas, han dado como resultado una amplia cantidad de teorías. En estas, se abordan diferentes aspectos del sistema que permiten al ser humano funcionar en diferentes ambientes. Esto es posible, porque el sistema cerebral es plástico (adaptable), se reestructura a sí mismo en una escala de la realidad, imperceptible para los sentidos humanos. A la par de esta cualidad, existen otras que codifican información. Ese es el caso del sistema neuronal espejo que codifica las intenciones de los demás, lo que permite entendernos. Los esquemas de aprendizaje se pueden estructurar, considerando el modelo holográfico de la mente, que expone la manera cómo la conciencia se distribuye por todo el sistema cerebral y funciona como un mecanismo de recuperación de información desde las diferentes áreas. Estos sistemas tienen como producto lo que en neurociencia se denomina memoria, la que es individual y colectiva. Finalmente, el lenguaje sustenta estas capacidades mentales y permite la manifestación comunicativa de los esquemas, a través de la interacción con los demás.
Normalización de la estrategia de enseñanza-aprendizaje Giras de Campo, para planificación y ejecución de sus tres momentos de ejecución: el antes, durante y después
Authors: Villavicencio Navarro Juan José
Published: June 2019

Las Giras de campo es una de las principales estrategias didáctica que relaciona la teoría aprendida en el salón de clases con la práctica del campo laboral; En este artículo se pone de manifiesto aspectos que juegan un papel relevante para la aplicación de dicha estrategia, cabe señalar que son pocas las evidencias documentadas que se tienen sobre las realizaciones de la misma; y en la actualidad para muchos estudiantes y profesores se ha convertido en una simple excursión más que un proceso de aprendizaje significativo, por esta y otras razones, en las instituciones de educación donde se pone en práctica esta importante estrategia se deben de contar con instrumentos, que vienen a ser formatos que evidencien y permitan una adecuada planificación de ejecución durante los tres grandes momentos de la gira de campo que son el antes, el durante y el después; estos momentos se necesitan, más aún en aquellas universidades que hacen uso de la carpeta docente, donde las evidencias del actuar de los docentes son un componente esencial de la misma, puesto que contribuye a tener una fuente de información  sobre los alcances que esta estrategia puede tener en el aprendizaje de los estudiantes, y sin obviar la perspectiva que estos mismos tienen hacia las giras de campo en las que han sido participe, pero que en muchas veces no se les toma en cuenta su perspectiva, la cual es muy importante conocer para la mejora continua en la aplicación de las giras de campo.
Balancing University Teaching and Media Industry Needs: A Case Study of Teaching Finance and Economics News Translation
Authors: Hu Wan , Wang Xuquan
Published: June 2019

This research uses case study research and employs a news translation module to analyse its synergic teaching method which includes a university teacher, an industry insider and translation learners. They, as the key stakeholders of the teaching and learning process, have their specific roles and continuously interact with each other. Through these interactions, actual trans-editing workflow is embedded into the university classroom. In order to examine the teaching effectiveness of such an innovative model, translation learners’ responses and commentaries are carefully taken into consideration. A wider implication of this research is that translator trainers may have their own reflections on innovating teaching strategies via the integration of academia and the professional world.
Integrating critical disability perspectives in nursing education
Authors: Anyinam Charles K. , Coffey Sue , Da Silva Celina
Published: June 2019

Undergraduate nursing education has a duty to make certain that the focus of both nursing practice with disabled people and nursing education are enabling, rather than disabling. However, depictions of disability in nursing education have been identified as inadequate and at times problematic, with insufficient attention paid to disability in curricula. In this paper, we provide an overview of representations of disability in nursing and examine the gaps and inadequacies in nursing education. We also support the argument that nursing educators must utilize critical perspectives on disability to challenge discrimination and address the gaps that currently exist. Finally, we focus on how nursing programs and educators can take action to support all nursing students to develop the knowledge, attitudes, and behaviours to meet the needs of disabled people in a more comprehensive and meaningful way. Practical and effective strategies are shared.
Alexandria. Kom el-Dikka, season 2017
Authors: Majcherek Grzegorz
Published: June 2019

The 2017 season of fieldwork was filled as usual with multiple tasks, covering both archaeological and conservation work. The high point of the year came on 1 April with the official inauguration of the tourist itinerary, constituting the first stage of the Kom el-Dikka Site Presentation Project. Officiating at the well-attended opening ceremony were His Excellency Dr. Khaled el- Enany, Minister of Antiquities of Egypt, accompanied by their Excellencies Mohammed Sultan, Governor of Alexandria, Michał Murkociński, Ambassador of Poland and Prof. Marcin Pałys, Rector of the University of Warsaw (see above, page 30 in this volume). The new itinerary swelled the numbers of visitors over the early summer months, even as the team returned late in the season to a regular schedule of digging and conservation, running all the time a training course for a group of junior SCA staff members. The course focused on basic excavation and conservation techniques and methods including stratigraphic analyses, surveying, pottery processing and drawing. Alexandria Kom el-Dikka Season 2017
Marina el Alamein. Preliminary report after the 2017 season
Authors: Jakubiak Krzysztof
Published: June 2019

Most of the activity during the 2017 season at the archaeological site of Marina el Alamein was focused on two areas situated in the northern part of the town. Building H 40 was one of the main excavation targets: two rooms were cleared, originally part of a large, multi-roomed and most probably prosperous house. The other target was the structure H 39, already explored in earlier seasons, which was now confirmed as a small but richly decorated bath complex with traces of wall painting and geometric mosaic floors.
Tell Retaba. Season 2017
Authors: Hudec Jozef , Jarmużek Łukasz , Hulcova Lucia , Fulajtar Emil , Dubcova Veronica , Rzepka Sławomir , Ryś Agnieszka
Published: June 2019

The 2017 season of archaeological excavation at the site of Tell el-Retaba in the Nile Delta in Egypt led to several interesting discoveries. Two of these concerned burials: a Hyksos tomb from the Second Intermediate Period, robbed but with some remains of the original furnishings, and pit burials from the early Eighteenth Dynasty, one of which was richly endowed with silver jewelry. Meriting note is the discovery of moats belonging to the defenses of the Nineteenth Dynasty fortress. Exploration of a crowded Third Intermediate Period settlement was continued.
Gebelein Archaeological Project 2018. Temple and Fortress Area on the Eastern Mountain
Authors: Ejsmond Wojciech , Wieczorek Dawid , Wieczorek Alicja
Published: June 2019

The report outlines fieldwork conducted on the Eastern Mountain of Gebelein (ancient town of Per-Hathor/Pathyris) in the 2018 season. Despite extensive exploration in the past, the publication record for this area is poor. Current epigraphic research and archaeological field survey, as well as an analysis of published and unpublished archival materials has yielded new data concerning the topography and history of the area, which is presented in this paper.
Early Makuria Research Project – Tanqasi. Vessels assemblage
Authors: Czyżewska-Zalewska Ewa
Published: June 2019

The first archaeological season of the Early Makuria Research Project at Tanqasi, which encompassed the exploration of five tombs in different parts of the extensive tumulus field (16, 23, 46, 52, and 179), yielded an assemblage of pottery vessels, as well as a metal bowl. The material dates from the late Meroitic, post-Meroitic and early Makurian periods.
Conservation of archaeological artefacts in Saruq Al-Hadid
Authors: Zieliński Łukasz , Weker Władysław
Published: June 2019

The article documents and discusses field conservation methods and procedures applied to metal artifacts, both copper and iron, discovered by the Polish team working at the Saruq al-Hadid archaeological site in the UAE (Emirate of Dubai) in 2016/2017 and 2017/2018. An overview is given of the conservation challenges that the state of preservation of the metal finds presented and the methods and procedures that were applied on the site, including brief case studies of the most important finds
and treatments.
Short history of the Church of Makuria (mid-6th–early 12th century)
Authors: Godlewski Włodzimierz
Published: June 2019

The article outlines the history of the Makurian church from the conversion of the kingdom to Christianity until the death of the archbishop Georgios in AD 1113, focusing particularly on the relations of the Makurian Church with the Church of Alexandria, and emphasizing its independence from Byzantine and Coptic influence from the second half of the 8th century until the time of Georgios.
Archaeological and architectural evidence of social change in 13th–17th century Dongola
Authors: Godlewski Włodzimierz
Published: June 2019

The article reviews the body of archaeological and architectural evidence for social transformation taking place in Dongola during the period from the end of the 13th through the end of the 17th century, the uppermost stratum uncovered by Polish archaeologists excavating the ruins of the medieval seat of Makurian kings. Domestic architecture from the late 14th through 17th centuries and the artifactual finds from these dwellings, which were built on top of the ruins of the Makurian capital, demonstrate the character and extent of changes in the education, culture and religion of the inhabitants of the city from the Funj period
FORMAÇÃO CONTINUADA EM ARTES: uma possibilidade de redução dos malefícios da polivalência
Authors: Roéfero Mileni Vanalli
Published: June 2019

Este artigo resulta do trabalho de conclusão de curso da especialização em Arte na Educação pela Universidade do Oeste Paulista (UNOESTE) e tem como objetivo geral reconhecer, na formação continuada, um meio de amenizar o impacto negativo da polivalência em Artes. Discutimos sobre a conceituação da formação continuada e o ensino de artes a partir de autores como Rankel e Stahlschmidt (2009), Gatti (2008), Hypolitto (2000) e afins, além da Lei de Diretrizes e Bases 9.394/96, para pontuar a definição legal acerca do tema tratado. Como objetivos específicos, buscamos: 1) analisar literaturas que versem sobre formação continuada; 2) discutir sobre o conceito de Arte na escola; 3) conhecer os benefícios da formação continuada para o ensino formal de Artes. Ao fim da discussão, concluímos que, apesar das limitações existentes, a formação continuada se apresenta como uma possibilidade de auxiliar na redução dos obstáculos no ensino regular causados pela polivalência.
OFICINA DE FORMAÇÃO CONTINUADA EM TEATRO: AS ADVERSIDADES PROVENIENTES DO SISTEMA POLÍTICO EDUCACIONAL
Authors:   Universidade do Oeste Paulista, Roéfero Mileni Vanalli , Saldan Amanda Dias ,   Universidade Estadual de Maringá, Mattos Rafaela de
Published: June 2019

Este artigo foi iniciado devido aos resultados da oficina de Formação Continuada em Teatro realizada com professoras dos CMEIs. A partir dos relatos apresentados pelas professoras participantes e das observações realizadas, percebemos a importância da formação continuada para os docentes. Por essa razão, o objetivo deste artigo é identificar, partindo dos relatos da oficina, as falhas nas políticas públicas, e analisar a interferência das mesmas no processo de formação continuada. Como objetivos específicos, buscamos: a) discutir sobre o comportamento imediatista e defensivo apresentado pelas participantes durante o curso de formação; b) identificar, nas legislações vigentes da educação, as projeções para a formação continuada no Brasil. Como autores principais que embasaram a escrita deste artigo, utilizamos (SPOLIN, 2010), (RYNGAERT, 2009), (SLADE, 1978), (SARDELICH, 2001), (DIAS, 2014), entre outros.
Cyclist’s Intention Identification on Pedestrian-Bicycle Mixed Sections Based on Phase-Field Coupling Theory
Authors: Wang Haibo , Si Haiqing , Wang Xiaoyuan
Published: June 2019

Bicycle is one of the main factors that affects the traffic safety and capacity on pedestrian-bicycle mixed traffic sections. It is important for implementing the warning of bicycle safety and improving the active safety to identify the cyclists’ intention in the mixed traffic environments under the condition of the “Internet of Things”. The phase-field coupling theory has been developed in this paper to comprehensively analyse the generation, spring up, increase, transfer, regression and reduction method of the traffic phase. The adaptive genetic algorithm based on the information entropy has been used to extract feature vectors of different types of cyclists for intention identification from the reduced pedestrian-bicycle traffic phase, and the theory of evidence has been provided here to build the identification model. The experimental verification shows that the extraction method of cyclists’ intention feature vector and identification model are scientific and reasonable. The theoretical basis can be applied to establishing the pedestrian-bicycle interactive security system.
Data Envelopment Analysis for Determining the Efficiency of Variant Solutions for Traffic Flow Organisation
Authors: Budimir Damir , Šoštarić Marko , Vidović Krešimir
Published: June 2019

There is a small number of empirical modelling study cases available that are related to the calculation of variant solutions efficiency from the aspect of sustainable mobility in the urban areas. In practice, it is often necessary - especially when it comes to the urban transport network - to evaluate the solutions for traffic flow organisation and routing, in order to implement the one(s) with the maximum potential to reduce the possibility of congestion during peak travelling periods i.e. during transport network peak load. The paper presents an approach to the aforementioned problem by the application of the transport system efficiency analysis. The aspect of traffic flow organisation and routing efficiency in variant solutions is clarified through the analysis model development, built on the premises of Data Envelopment Analysis (DEA) method and the principles of unnecessary traffic flow intersections (TFI) theory. The proposed model defines the efficiency limit for data attributed to variant solutions, based on the calculation of the optimal TFI model and the possibilities of DEA method that include comparison and definition of relative routing efficiency for every optional traffic flow against the efficiency limit (optimal model) in order to calculate relative efficiency in relation to other solutions.
An integration of deep learning with feature embedding for protein–protein interaction prediction
Authors: Yao Yu , Du Xiuquan , Diao Yanyu , Zhu Huaixu
Published: June 2019

Protein–protein interactions are closely relevant to protein function and drug discovery. Hence, accurately identifying protein–protein interactions will help us to understand the underlying molecular mechanisms and significantly facilitate the drug discovery. However, the majority of existing computational methods for protein–protein interactions prediction are focused on the feature extraction and combination of features and there have been limited gains from the state-of-the-art models. In this work, a new residue representation method named Res2vec is designed for protein sequence representation. Residue representations obtained by Res2vec describe more precisely residue-residue interactions from raw sequence and supply more effective inputs for the downstream deep learning model. Combining effective feature embedding with powerful deep learning techniques, our method provides a general computational pipeline to infer protein–protein interactions, even when protein structure knowledge is entirely unknown. The proposed method DeepFE-PPI is evaluated on the S. Cerevisiae and human datasets. The experimental results show that DeepFE-PPI achieves 94.78% (accuracy), 92.99% (recall), 96.45% (precision), 89.62% (Matthew’s correlation coefficient, MCC) and 98.71% (accuracy), 98.54% (recall), 98.77% (precision), 97.43% (MCC), respectively. In addition, we also evaluate the performance of DeepFE-PPI on five independent species datasets and all the results are superior to the existing methods. The comparisons show that DeepFE-PPI is capable of predicting protein–protein interactions by a novel residue representation method and a deep learning classification framework in an acceptable level of accuracy. The codes along with instructions to reproduce this work are available from https://github.com/xal2019/DeepFE-PPI.
PhD7Faster 2.0: predicting clones propagating faster from the Ph.D.-7 phage display library by coupling PseAAC and tripeptide composition
Authors: He Bifang , Chen Heng , Huang Jian
Published: June 2019

Selection from phage display libraries empowers isolation of high-affinity ligands for various targets. However, this method also identifies propagation-related target-unrelated peptides (PrTUPs). These false positive hits appear because of their amplification advantages. In this report, we present PhD7Faster 2.0 for predicting fast-propagating clones from the Ph.D.-7 phage display library, which was developed based on the support vector machine. Feature selection was performed against PseAAC and tripeptide composition using the incremental feature selection method. Ten-fold cross-validation results show that PhD7Faster 2.0 succeeds a decent performance with the accuracy of 81.84%, the Matthews correlation coefficient of 0.64 and the area under the ROC curve of 0.90. The permutation test with 1,000 shuffles resulted in p < 0.001. We implemented PhD7Faster 2.0 into a publicly accessible web tool (http://i.uestc.edu.cn/sarotup3/cgi-bin/PhD7Faster.pl) and constructed standalone graphical user interface and command-line versions for different systems. The standalone PhD7Faster 2.0 is able to detect PrTUPs within small datasets as well as large-scale datasets. This makes PhD7Faster 2.0 an enhanced and powerful tool for scanning and reporting faster-growing clones from the Ph.D.-7 phage display library.