Brasilia’s Database Administrators

Database administration has gained an essential role in the management of new database technologies. Different data models are being created for supporting the enormous data volume, from the traditional relational database. These new models are called NoSQL (Not only SQL) databases. The adoption of best practices and procedures, has become essential for the operation of database management systems. Thus, this paper investigates some of the techniques and tools used by database administrators. The study highlights features and particularities in databases within the area of Brasilia, the Capital of Brazil. The results point to which new technologies regarding database management are currently the most relevant, as well as the central issues in this area

Visual Analisys of Educational Data: A Gender Study in Computer Courses in University of Brasilia

The presence of women in technology-related courses is declining every year, reaching in 2016 less than 20% of the total student body in the Department of Computer Science in UnB (Universidade de Bras´ılia). This paper uses visualization techniques to analyze and identify profile patterns in girls on undergraduate courses in the computing field. Dimensionality reduction technique (PCA), HeatMap and Parallel Coordinates were used for the visual data analysis process, considering the students’ situation in relation to UnB (active, drop out or graduated). In this work, the existing correlations between variables were evidenced, with more in-depth analysis of the association between entrance period and the nature of the university departure form and period of the university attendance. Also, the students participating in the quota schema were analysed and the study suggests that there is no correlation between students enrolled under the quota system and the form of departure from the course.&nbsp

Meninas.comp : computação também é coisa de menina

Este artigo apresenta o projeto “Meninas.comp: Computação Também é Coisa de Menina”, que tem o objetivo de divulgar a área da Computação para as meninas do ensino médio, fornecendo informações sobre a carreira professional na academia e no mercado de trabalho, através de palestras e oficinas de programação e robótica. Além disso, o artigo discute a questão de gênero nos cursos de Computação do Departamento de Ciência da Computação da Universidade de Brasília, e também os resultados de uma pesquisa, realizada entre 2011 e 2014, sobre a percepção das alunas do ensino médio do Distrito Federal sobre a área de Computaçã

Provenance in bioinformatics workflows

In this work, we used the PROV-DM model to manage data provenance in workflows of genome projects. This provenance model allows the storage of details of one workflow execution, e.g., raw and produced data and computational tools, their versions and parameters. Using this model, biologists can access details of one particular execution of a workflow, compare results produced by different executions, and plan new experiments more efficiently. In addition to this, a provenance simulator was created, which facilitates the inclusion of provenance data of one genome project workflow execution. Finally, we discuss one case study, which aims to identify genes involved in specific metabolic pathways of Bacillus cereus, as well as to compare this isolate with other phylogenetic related bacteria from the Bacillus group. B. cereus is an extremophilic bacteria, collectemd in warm water in the Midwestern Region of Brazil, its DNA samples having been sequenced with an NGS machine

Evaluating the Cassandra NoSQL Database Approach for Genomic Data Persistency

Rapid advances in high-throughput sequencing techniques have created interesting computational challenges in bioinformatics. One of them refers to management of massive amounts of data generated by automatic sequencers. We need to deal with the persistency of genomic data, particularly storing and analyzing these large-scale processed data. To find an alternative to the frequently considered relational database model becomes a compelling task. Other data models may be more effective when dealing with a very large amount of nonconventional data, especially for writing and retrieving operations. In this paper, we discuss the Cassandra NoSQL database approach for storing genomic data. We perform an analysis of persistency and I/O operations with real data, using the Cassandra database system. We also compare the results obtained with a classical relational database system and another NoSQL database approach, MongoDB

Percepção das meninas do ensino médio sobre o curso de computação no Distrito Federal do Brasil

Abstract—In the last years, the field computer science has been of little interest for girls attending the undergraduate courses in Brazil. In the Computer Science Department at the University of Brasília, in the country’s capital, female students compose less than 10% of the student body. To try to understand the girls’ lack of interest in computer related courses, this article analyses data from a poll done with high school girls in Brazil’s Distrito Federal from 2011 to 2014.Nos últimos anos, as meninas que ingressam no ensino superior no Brasil tem demonstrado pouco interesse pela área de Computação. Especificamente, na capital do Brasil, o índice de alunas que ingressam nos cursos do Departamento de Ciência da Computação da Universidade de Brasília é de menos de 10%. Para tentar entender a falta de motivação das meninas para os cursos de computação, este artigo apresenta um estudo, baseado em análise dos dados, a partir de uma pesquisa realizada entre 2011 e 2014, com alunas do ensino médio do Distrito Federal no Brasil sobre a área de Computação.Sociedad Argentina de Informática e Investigación Operativa (SADIO

Percepção das meninas do ensino médio sobre o curso de computação no Distrito Federal do Brasil

Abstract—In the last years, the field computer science has been of little interest for girls attending the undergraduate courses in Brazil. In the Computer Science Department at the University of Brasília, in the country’s capital, female students compose less than 10% of the student body. To try to understand the girls’ lack of interest in computer related courses, this article analyses data from a poll done with high school girls in Brazil’s Distrito Federal from 2011 to 2014.Nos últimos anos, as meninas que ingressam no ensino superior no Brasil tem demonstrado pouco interesse pela área de Computação. Especificamente, na capital do Brasil, o índice de alunas que ingressam nos cursos do Departamento de Ciência da Computação da Universidade de Brasília é de menos de 10%. Para tentar entender a falta de motivação das meninas para os cursos de computação, este artigo apresenta um estudo, baseado em análise dos dados, a partir de uma pesquisa realizada entre 2011 e 2014, com alunas do ensino médio do Distrito Federal no Brasil sobre a área de Computação.Sociedad Argentina de Informática e Investigación Operativa (SADIO

Percepção das meninas do ensino médio sobre o curso de computação no Distrito Federal do Brasil

Abstract—In the last years, the field computer science has been of little interest for girls attending the undergraduate courses in Brazil. In the Computer Science Department at the University of Brasília, in the country’s capital, female students compose less than 10% of the student body. To try to understand the girls’ lack of interest in computer related courses, this article analyses data from a poll done with high school girls in Brazil’s Distrito Federal from 2011 to 2014.Nos últimos anos, as meninas que ingressam no ensino superior no Brasil tem demonstrado pouco interesse pela área de Computação. Especificamente, na capital do Brasil, o índice de alunas que ingressam nos cursos do Departamento de Ciência da Computação da Universidade de Brasília é de menos de 10%. Para tentar entender a falta de motivação das meninas para os cursos de computação, este artigo apresenta um estudo, baseado em análise dos dados, a partir de uma pesquisa realizada entre 2011 e 2014, com alunas do ensino médio do Distrito Federal no Brasil sobre a área de Computação.Sociedad Argentina de Informática e Investigación Operativa (SADIO

Distributed data service for data management in internet of things middleware

The development of the Internet of Things (IoT) is closely related to a considerable increase in the number and variety of devices connected to the Internet. Sensors have become a regular component of our environment, as well as smart phones and other devices that continuously collect data about our lives even without our intervention. With such connected devices, a broad range of applications has been developed and deployed, including those dealing with massive volumes of data. In this paper, we introduce a Distributed Data Service (DDS) to collect and process data for IoT environments. One central goal of this DDS is to enable multiple and distinct IoT middleware systems to share common data services from a loosely-coupled provider. In this context, we propose a new specification of functionalities for a DDS and the conception of the corresponding techniques for collecting, filtering and storing data conveniently and efficiently in this environment. Another contribution is a data aggregation component that is proposed to support efficient real-time data querying. To validate its data collecting and querying functionalities and performance, the proposed DDS is evaluated in two case studies regarding a simulated smart home system, the first case devoted to evaluating data collection and aggregation when the DDS is interacting with the UIoT middleware, and the second aimed at comparing the DDS data collection with this same functionality implemented within the Kaa middleware