O presente estudo teve como objetivo a análise da viabilidade econômico-financeira da instalação de um sistema gerador de energia solar fotovoltaica em uma Instituição de Ensino Superior (IES) no Estado do Ceará. Para tanto, foi realizada uma pesquisa exploratória, analisando o payback descontado, o valor presente líquido (VPL) e a taxa interna de retorno (TIR). Os resultados confirmaram que o projeto da instalação de energia solar fotovoltaica, além de ser uma alternativa para reduzir custos e propiciar a ampliação da matriz energética, é viável considerando os dados projetados. O retorno do investimento se dá em 6,0 anos. No final do vigésimo quinto ano o VPL será de R$ 1.895.585,00, com uma TIR de 20,29%. A economia na geração de energia acumulada pelo sistema solar ao longo dos 25 anos será de aproximadamente R$ 5,3 milhões. Tão importante quantovalidar esta pesquisa, é garantir que este modelo atenderá também às demandas sociais de sustentabilidade, assunto de importância na conjectura para o desenvolvimento regional. O resultado encontrado pode ainda incentivar que as demais IES localizadas geograficamente próximas ao campus da IES em estudo adotem esta solução.
No abstract
Os professores constantemente são confrontados com desafios relacionados à metodologia de ensino empregada em sala de aula. Seja devido às novas tecnologias, ou novos conceitos, é evidente o fato de que os docentes se reinventam na tentativa de proporcionar a melhor experiência de ensino possível aos seus alunos. Este estudo aborda uma realidade mais desafiadora ainda, a de levar adiante tudo isso, porém, em um ambiente fora da sala de aula. O isolamento social causado pela pandemia da COVID-19 trouxe, abruptamente, o ensino remoto para o centro das atenções, se tornando a nova realidade. Este artigo teve como objetivo compreender as diferenças de ensino, entre a rede pública e privada em cidades do interior do Ceará, sendo realizada através da aplicação de entrevistas, em que foram coletados os relatos dos docentes. Enquanto no ensino público a principal dificuldade narrada foi a aplicação das ferramentas, no ensino privado a dificuldade maior foi adequar o conteúdo à metodologia. Neste período de aulas remotas, não só é fundamental capacitar os profissionais da educação, mas principalmente dar voz aos professores, visto que estes são os verdadeiros agentes transformadores da educação.
Purpose: to identify which Higher Education Institutions (HEIs) in the Metropolitan Region of Cariri (MRC) use photovoltaic solar energy, then analyze the sustainability measures used by the HEIs, correlating them with the Sustainable Development Goals (SDG). Design/methodology/approach: a case study, where the secondary data source and the data analysis technique is bibliographic and documentary. Findings: four HEIs use photovoltaic solar energy (22.22%) in the MRC from a total of 18 HEIs, revealing a predominance of public HEIs (75%) over private HEIs (25%). The systems are new and have been installed within the last five years. The simple average payback found is 4.9 years. The study showed that in other universities worldwide, this period varies from 3 to 14.29 years. Average monthly energy generation ranges from 18,000 kWh to almost 115,000 kWh. Sustainable Development Goal 7 was observed in all the HEIs in the study, with 1 of the HEIs using measures found in all the SDGs. Research, practical and social implications: Results reveal that the major motivation for implementing photovoltaic solar energy in these HEIs is environmental and social, and not economic, also revealing the predominance of public HEIs over private HEIs. Since it is a region with a high potential to use renewable energy, the results found are also intended to encourage debate among the other HEIs identified in the study and for them to adopt this solution. Originality/value: HEIs has an enormous capacity to have a positive influence on society and is a bridge between research, practice, and knowledge dissemination. The MRC has a large educational structure, with 18 HEIs, and can significantly contribute to meeting the SDG. This article demonstrates the structure and impacts of adopting sustainability measures in these HEIs. Keywords: Sustainable Development; Universities; Renewable Energy; SDG.
The quality of life underlying the modern society can be attributed to several factors, among them, the technological and economic development experienced in recent years. Durable consumer goods are part of this modern society, such as automobiles. However, because most automobiles are powered by the combustion of fossil fuels, the emission of greenhouse gases is a worrisome environmental problem. The objective of this article is to analyze Gross Domestic Product (GDP) data, population and SELIC rate (SELIC stands for Special System of Settlement and Custody) in the period from 2001 to 2020 to evaluate the impact on the number of vehicles in the Cariri Metropolitan Region (RMC), using multivariate models. It was verified that the fleet of the RMC experienced an increase of 561.45% in the last 20 years. Three prediction models were tested and the conclusion was reached that for the next 20 years it is not sustainable to maintain the same growth already experienced, in a linear manner. Instead, the ideal is to adopt a model with growth forecast with a logarithmic function, i. e. with a stationary tendency in the long time. In a society where over 50% of vehicles are more than 10 years old, it is essential that public managers, the private initiative, the academic-scientific environment and society adopt sustainable practices and consider future scenarios to make decisions in order to preserve the environment and to ensure everyone's quality of life.
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