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Structure and kinematics of the interacting group NGC 5098/5096
No full textContext. Most galaxies in the Universe are found in groups that have various morphologies and dynamical states. Studying how groups evolve is an important step for our understanding of both large-scale structure formation and galaxy evolution.
Aims. We analysed a system composed of two groups at z ≃ 0.037, NGC 5098, a group dominated by a pair of elliptical galaxies, and NGC 5096, a compact system that appears to be interacting with NGC 5098. We describe its current dynamical state in order to investigate how it fits in our current cosmological framework.
Methods. Our analysis is based on deep Canada-France-Hawaii Telescope (CFHT/MegaCam) g and r imaging, archival Chandra X-ray data, and publicly available data of the galaxy redshift distribution. We modelled the surface brightness of the 12 brightest galaxies in the field of view and investigated the diffuse intragroup light that we detected. With a redshift sample of 112 galaxies, we studied the dynamical states of both groups.
Results. We detected low surface brightness diffuse light associated with both galaxy–galaxy interactions and a possible group–group collision. The substructure we found in velocity space indicates a past interaction between the two groups. This is further corroborated by the X-ray analysis.
Conclusions. We conclude that NGC 5098 and NGC 5096 form a complex system that may have collided in the past, thus producing a sloshing observed in X-rays and a large-scale diffuse component of intragroup light as well as some important tidal debris
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Liderazgo estratégico directoral y los compromisos de gestión escolar en la Institución Educativa 5098 Kumamoto, Callao
Get PDFLa presente investigación tuvo como objetivo determinar la relación que existe entre el
liderazgo estratégico directoral y los compromisos de gestión escolar en la Institución
Educativa N°5098 Kumamoto, Callao.
La metodología empleada para la elaboración de esta tesis es de enfoque cuantitativo. Es
una investigación básica que se ubica en el nivel descriptivo y correlacional. El diseño de
la investigación es no experimental: transversal: correlacional. La población estuvo
conformada por 83 docentes de la Institución Educativa N°5098 Kumamoto, Callao, se
utilizó un muestreo no probabilístico de tipo censal, es decir el tamaño de la muestra
estuvo representado por 83 docentes de la Institución Educativa N°5098 Kumamoto,
Callao, se utilizó como instrumentos un cuestionario, con un nivel de significancia de
0.935 para la variable liderazgo estratégico directoral y 0.860 para la variable compromisos
de gestión escolar de acuerdo al alpha de Cronbach.
Los resultados estadísticos según la prueba de Correlación de Spearman se obtuvo una
relación de Rho = 0,953, correlación positiva muy alta y una significancia de p = 0,000 <
0.05, se rechazó la Ho, concluyendo que ambas variables de estudio están correlacionadas
de manera significativa, determinando la relación que existe entre el liderazgo estratégico
directoral y los compromisos de Gestión Escolar es significativa en la Institución
Educativa.The purpose of this research was to determine the relationship between principal strategic leadership and school management commitments at Educational Institution No. 5098 Kumamoto, Callao.
The methodology used for this thesis is quantitative. It is a basic research approach that focuses on the descriptive and correlational levels. The research design is non-experimental: cross-sectional, and correlational. The population consisted of 83 teachers from Educational Institution No. 5098 Kumamoto, Callao. A non-probability census-type sampling was used. The sample size was represented by 83 teachers from Educational Institution No. 5098 Kumamoto, Callao. A questionnaire was used as an instrument, with a significance level of 0.935 for the principal strategic leadership variable and 0.860 for the school management commitments variable according to Cronbach's alpha. The statistical results according to the Spearman correlation test showed a ratio of Rho = 0.953, a very high positive correlation, and a significance of p = 0.000 < 0.05, the Ho was rejected, concluding that both study variables are significantly correlated, determining the relationship between directorial strategic leadership and school management commitments in the Educational Institution No. 5098 Kumamoto, Callao. The objective of this research was to determine the relationship between directorial strategic leadership and school management commitments in the Educational Institution No. 5098 Kumamoto, Callao. The methodology used for the preparation of this thesis is a quantitative approach. It is a basic investigation that is located at the descriptive and correlational levels. The research design is non-experimental: cross-sectional: correlational. The population was made up of 83 teachers
from the Educational Institution No. 5098 Kumamoto, Callao, a non-probabilistic sampling
of census type was used, that is, the sample size was represented by 83 teachers from the
Educational Institution No. 5098 Kumamoto, Callao, a questionnaire was used as
instruments, with a level of significance of 0.935 for the directive strategic leadership
variable and 0.860 for the variable school management commitments according to
Cronbach's alpha.
The statistical results according to the Spearman Correlation test obtained a ratio of Rho =
0.953, very high positive correlation and a significance of p = 0.000 <0.05, Ho was rejected,
concluding that both study variables are significantly correlated, determining the
relationship that exists between the directive strategic leadership and the commitments of
School Management is significant in the Educational Institution.TesisEscuela de PosgradoGestión y calidad educativ
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Oral health in children in school stages in relation to the practices and knowledge of parents of the educational institution 5098 kumamoto – ventanilla 2019
No full textEste estudio fue para determinar la salud bucal en niños en etapas escolares en relación a las prácticas y conocimientos de padres de la Institución Educativa 5098 Kumamoto – Ventanilla 2019, la metodología, correlacional, descriptivo trasversal, en una muestra estuvo conformada por 140 padres de familia con hijos en inicial, primaria y secundaria. Concluyéndose, que existe relación entre prácticas y conocimiento de los padres de familia en salud bucal en niños en etapas escolares en la Institución Educativa 5098 – Ventanilla 2019This study was to determine the oral health in children in school stages in relation to the practices and knowledge of parents of the Educational Institution 5098 Kumamoto - Ventanilla 2019, the methodology, correlational, descriptive cross-sectional, in a sample consisted of 140 parents with children in kindergarten, primary and secondary school. It was concluded that there is a relationship between practices and knowledge of parents in oral health in children in school stages in the Educational Institution 5098 - Ventanilla 201
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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