This article is part ofnbsp; doctoral research conducted during the Covid-19 Pandemic in Brazil. The thesis aimed to investigate the feelings and perceptions of undergraduates in the Pedagogy degree course in a private higher education institution about the digital inclusion of students during the Covid-19 Pandemic. For this purpose, a systematic literature review was carried out during the research in order to map and analyze the research on digital inclusion in Higher Education. For this, the researches from 2009 to 2019 were selected in the databases of the Digital Brazilian Library of Theses and Dissertations and the Catálago of Theses and Dissertations Capes, which addressed the chosen topic. Thus, 1563 researches were found in the first selection, 51 being selected for reading the abstracts and 9 for reading and complete analysis of the studies. With the result of the analyzes, it is observed that the curricula of the university degree courses in Pedagogy present small advances when analyzing the contents involving Information and Communication Technologies - ICTs or Digital Information and Communication Technologies - TDICs. However, in the planning of the disciplines or in the methodologies of the classes, the teaching practice with the use of ICTs or TDICs, in most cases, are not reality in the classrooms. Also, it was found that it is necessary an investment, on the part of Higher Education Institutions, in digital materials and supports, such as qualification of computer laboratories and the offer of quality internet for all students and teachers.

Este artículo forma parte de la investigación de doctorado realizada durante la pandemia de Covid-19 en Brasil. La tesis tuvo como objetivo investigar los sentimientos y percepciones de los estudiantes de licenciatura en Pedagogía, en una institución privada, con respecto a la inclusión digital de los estudiantes durante la pandemia de Covid-19. Con este fin, se realizó una revisión sistemática de la literatura con el objetivo de mapear y analizar las investigaciones relacionadas con la inclusión digital en la educación superior. Seleccionaron las investigaciones realizadas entre 2009 y 2019 en las bases de datos del Portal de Biblioteca Digital Brasileña de Tesis y Dissertaciones y Catálogo de Tesis y Dissertaciones Capes que abordaron el tema elegido. Así, se encontraron 1563 investigaciones en la primera selección, siendo seleccionadas 51 para la lectura de resúmenes y 9 para la lectura y análisis completos de los estudios. Los resultados de los análisis muestran que los planes de estudios de los programas universitarios de licenciatura han avanzado poco al analizar los contenidos relacionados con las Tecnologías de Información y Comunicación (TIC) o las Tecnologías Digitales de Información y Comunicación (TDIC). Sin embargo, en los planes de clase o en las metodologías de las clases, el uso de TICs o TDICs por parte de los profesores en la mayoría de los casos no es una realidad en las aulas. También se observó que es necesario una inversión por parte de las instituciones de educación superior en materiales y soportes digitales, como la formación de los laboratorios de informática y la oferta de internet de calidad para todos los estudiantes y profesores.

O presente artigo faz parte da pesquisa de doutorado realizada durante a Pandemia do Covid-19 no Brasil. A tese teve como objetivo investigar os sentimentos e percepções de graduandos do curso de licenciatura em Pedagogia, em uma IES privada, sobre a inclusão digital dos discentes no período da Pandemia do Covid-19. Para isso, durante a pesquisa foi realizada uma revisão sistemática da literatura com o objetivo de mapear e analisar as pesquisas que abordassem a inclusão digital no Ensino Superior. Para isso, foram selecionadas as pesquisas de 2009 até 2019, nas bases de dados do Portal da Biblioteca Digital Brasileira de Teses e Dissertações e Catálogo de Teses e Dissertações Capes, que abordavam o tema escolhido. Assim, foram encontradas na primeira seleção 1563 pesquisas, sendo selecionadas 51 para leitura dos resumos e 9 para leitura e análise completa dos estudos. Com o resultado das análises, percebe-se que os currículos dos cursos universitários de licenciaturas apresentam pequenos avanços quando se analisa os conteúdos envolvendo as Tecnologias de Informação e Comunicação-TICs ou as Tecnologias Digitais de Informação e Comunicação-TDICs. Entretanto, nos planejamentos das disciplinas ou nas metodologias das aulas, a prática docente com o uso das TICs ou TDICs, em sua maioria, não são realidade nas salas de aula. Como também, constatou-se que é necessário um investimento, por parte das Instituições do Ensino Superior, nos materiais e suportes digitais, como qualificação dos laboratórios de informática e a oferta de internet de qualidade para todos os alunos e professores.

Multiple environmental problems are caused by the accumulation of nitrogen (N) and phosphorus (P) in river water on its way to the ocean. The objective of this work was to determine the N and P loads in 12 hydrographic basins that flow into estuaries along the northeastern coast of Brazil using established methods. Additionally, natural and anthropogenic loads trends in the hydrographic basins of 12 tropical rivers in northeastern Brazil over 27 years (1990-2016) were evaluated. The results indicated an annual average increase of +1.1% in population density, while precipitation showed no significant trend. The anthropogenic loads were 21 and 112 times higher than natural inputs for N and P, respectively. Anthropogenic sources accounted for ~ 96% of all contributions. The positive trends of these loads (mainly wastewater) represented an annual average increase of 1.1% for N and 1.2% for P, for all river basins included in this study. These percentages represent average annual loads of 251 t N yr-1 and 54.8 t P yr-1. The time series of N and P in the study region showed trends that point to a constant increase, implying a greater contribution of these loads to the adjacent coastal region year after year.

RESUMEN La tecnología Wi-Fi está presente en universidades, restaurantes, pubs, alrededor del mundo, ganando así notorio espacio en los sistemas de comunicación especialmente debido a la mejora de las tecnologías inteligentes. Sin embargo, varios dispositivos pueden interferir con esta red, reduciendo o incluso provocando la pérdida de datos en las transferencias. La Interferencia Electromagnética (EMI) provocada por los equipos de iluminación es un fenómeno poco conocido y poco analizado en Brasil. El uso masivo de estas tecnologías necesita ser evaluado remarcando un análisis crítico de sus límites permitidos. Este estudio tiene como objetivo verificar y evaluar las posibles influencias que las tecnologías de iluminación pueden generar en las redes de comunicación (Wi-Fi) a través de la Interferencia Electromagnética (EMI). Para comprobar la influencia de los sistemas de iluminación en las redes Wi-Fi, el siguiente artículo es el resultado de varias pruebas bajo la influencia de siete tipos diferentes de fuentes de iluminación, entre trece muestras. Las pruebas se realizaron en un entorno blindado, en el LabLux - UFF (Laboratório de Luminotécnica da UFF), utilizando el software Iperf3.

ABSTRACT Wi-Fi technology is present in homes, universities, restaurants, and pubs worldwide, thus gaining notorious space in communication systems, especially due to smart technologies improvement. However, several devices can interfere with this network, reducing or even causing data loss on transferences. The Electromagnetic Interference (EMI) caused by lighting equipment is a bad-known and little-analyzed phenomenon in Brazil. The massive use of these technologies needs to be evaluated, remarking a critical analysis of its permitted limits. This study aims to verify and evaluate the possible influences that lighting technologies can generate on communication networks (Wi-Fi) through Electromagnetic Interference (EMI). The following article is the result of several tests under the influence of seven different types of lighting sources among thirteen samples to assess the influence of lighting systems on Wi-Fi networks. The tests were made in a shielded environment, on the LabLux - UFF (Laboratório de Luminotécnica da UFF), using the Iperf3 software.

Resumo Este artigo tem como objetivo analisar a influência da vizinhança sobre o desempenho escolar dos alunos da rede pública de ensino do Recife. Especificamente, o trabalho investiga empiricamente a existência de uma relação entre o desempenho do aluno e as características de sua vizinhança e os mecanismos pelos quais atua essa influência. Para tanto, utiliza-se a base de dados da Fundaj (2013) para construir, de forma pioneira no Brasil, as variáveis de vizinhança dos alunos da cidade considerando pequenas escalas geográficas. Os resultados dos exercícios econométricos indicam que os alunos residentes em uma vizinhança mais privilegiada tendem a apresentar, em média, melhor desempenho em matemática. Na análise que considera a composição dos pares de vizinhança, os resultados sugerem que a proporção de repetentes influenciaria o desempenho de matemática.

Abstract This study aims to investigate the influence of the neighborhood over the students' performance in the public school system of Recife, Brazil. Specifically, we investigate empirically the existence of a relation among the students’ performance and the characteristics of their neighborhoods, and the mechanisms by which this influence occurs. For that, we use the data set of the Fundaj (2013) to build, in a pioneer way in Brazil, the neighborhood variables of the students regarding small geographic scales. Our econometric results indicate that the students that live in privileged neighborhoods tend to show higher scores than the others. The peer composition analysis suggests that only the proportion of the grade repetition influences the students' math grades.

Abstract: This paper focused on the use of the biogeochemical LOICZ (Land Ocean Interactions in the Coastal Zone) to investigate the dynamics of DIN and DIP nutrients among three highly urbanized tropical estuaries (Barra das Jangadas (BJ), Recife (RE) and Timbó (TB)), located in the northeastern region of Brazil. The input data were obtained through in situ measurements (2007) and governmental agency databases (2001-2007). The balances of the non-conservative elements showed that the RE and TB systems alternated between sources and sinks during the observation periods (0.2-0.8 mmoles DIP m-2 d-1 and 0.1-10 mmoles DIN m-2 d-1). The metabolism rates in the systems indicated that the BJ system was autotrophic during the two observation periods (10-26 mmoles C m-2 d-1), while the RE system was heterotrophic (9-12 mmoles C m-2 d-1). The river discharge rates observed during the period 2001-2007 showed averages ranging from 9.4±3.8 to 18.4±7.7 m3s-1. Measurements of the trophic status in the RE system during 2007 characterized the system as eutrophic, thereby demonstrating high levels of chlorophyll-a and inorganic nutrients. The applications of balance sheets modeling proved to be very useful toward understanding the dynamics of estuarine systems dominated by large urban centers.