http://repositorio.ufc.br/handle/riufc/42 2026-04-28T22:41:21Z 2026-04-28T22:41:21Z Ferreira, Jayane Freires Costa, Edward Martins Khan, Ahmad Saeed Irffi, Guilherme Diniz Lima, Alex Felipe Rodrigues Oliveira, Felipe Resende http://repositorio.ufc.br/handle/riufc/86014 2026-04-24T18:07:11Z 2026-01-01T00:00:00Z

Título: Avaliação de impacto do Programa um Computador por Aluno no desempenho escolar Autor(es): Ferreira, Jayane Freires; Costa, Edward Martins; Khan, Ahmad Saeed; Irffi, Guilherme Diniz; Lima, Alex Felipe Rodrigues; Oliveira, Felipe Resende Abstract: From the perspective of evaluating Information and Communication Technologies (ICTs) in the school environment, aiming to enhance the quality of education, this study seeks to quantify the impact of the One Computer per Student Program (Prouca) on school performance. The program involved providing laptops to students and training teachers. For this purpose, microdata from the Basic Education Assessment System (Saeb) was used in conjunction with the School Census, conducting school-level analyses using the Fuzzy Regression Discontinuity Design (RDD) method, considering the restriction of a maximum number of eligible students and teachers to participate in the program. In this case, the number of students and teachers predicted by the Maimonides' Rule function developed by Angrist and Lavy (1999) was used as an instrument for the observed quantity. The results revealed that Prouca did not hav significantly impact students in standardized Portuguese language and mathematics tests hese findings support the existing literature that evaluates the implementation of ICTs in schools, particularly in developing countries. Tipo: Artigo de Periódico

2026-01-01T00:00:00Z Vieira, Aline Cavalcante Khan, Ahmad Saeed Silva, Laura Costa http://repositorio.ufc.br/handle/riufc/86011 2026-04-24T18:01:31Z 2026-01-01T00:00:00Z

Título: Sustentabilidade agrícola do cultivo de acerola na região do Vale do Jaguaribe, Ceará. Autor(es): Vieira, Aline Cavalcante; Khan, Ahmad Saeed; Silva, Laura Costa Abstract: In Brazil, organic agriculture has been expanding as a sustainable production system capable of optimizing natural and socioeconomic resources, promoting self-sufficiency, and eliminating the use of pesticides and chemical inputs. In this context, it emerges as an alternative to the conventional model, mitigating the impacts of agricultural modernization. This study analyzes the effects of agroecological transition on environmental management and the annual revenue per hectare of organic acerola fruit growers in the Vale do Jaguaribe region, Ceará. To this end, the Environmental Management Index (IGA) was measured, followed by tabular analyses and parametric and non-parametric statistical tests to compare conventional and organic acerola producers. The results indicate that organic demonstrated better environmental management, achieving a high level of environmental sustainability, while the conventional group remained at a medium level. Additionally, it was found that organic producers achieve higher revenue per hectare of acerola compared to conventional. Tipo: Artigo de Periódico

2026-01-01T00:00:00Z Alexandre, Weldes Santos Moreira, Bárbara Sheyla Pereira Lima Duarte, Geann Pablo de Sousa Casimiro Filho, Francisco http://repositorio.ufc.br/handle/riufc/86010 2026-04-24T17:52:46Z 2024-01-01T00:00:00Z

Título: Etnoecologia para a gestão sustentável de recursos naturais: uma análise crítica de desafios e oportunidades Autor(es): Alexandre, Weldes Santos; Moreira, Bárbara Sheyla Pereira Lima; Duarte, Geann Pablo de Sousa; Casimiro Filho, Francisco Abstract: Rising temperatures, highlighted by the IPCC in 2019, are intensifying extreme weather events such as droughts, floods and heatwaves, and the loss of biodiversity, estimated by the UN in 2022, are consequences attributed to human actions, including industrialization, pollution and deforestation. Ethnoecology is a valuable perspective for understanding ecosystems, integrating ancestral knowledge from local communities, combined with environmental education, based on Paulo Freire's vision, to raise awareness and engage society in environmental protection. Relevant authors highlight the importance of this knowledge in environmental preservation and social justice. By integrating ancestral knowledge into environmental education, it is possible to expand and deepen the understanding of nature, including socio-cultural and ecological dimensions often neglected by traditional scientific approaches. The research proposes to analyze the benefits, challenges and opportunities of integrating ethnic knowledge into environmental education, presenting successful experiences and innovative projects that value and incorporate traditional knowledge into effective actions. Tipo: Artigo de Periódico

2024-01-01T00:00:00Z Lessa, Laura Cunha Rebouças Tabosa, Francisco José Silva Khan, Ahmad Saeed Coronel, Daniel Arruda Amorim, Domingos Isaias Maia http://repositorio.ufc.br/handle/riufc/86006 2026-04-24T17:45:23Z 2026-01-01T00:00:00Z

Título: Clubes de convergência e dinâmica de preços do trigo no Brasil, Estados Unidos e Argentina (2004–2024) Autor(es): Lessa, Laura Cunha Rebouças; Tabosa, Francisco José Silva; Khan, Ahmad Saeed; Coronel, Daniel Arruda; Amorim, Domingos Isaias Maia Abstract: This study analyzes the behavior of wheat prices in the states of Paraná and Rio Grande do Sul, the main wheat-producing regions in Brazil, as well as in the markets of Rosario (Argentina), Kansas, and Chicago (USA), from January 2004 to June 2024. The objective is to investigate the existence of β and σ convergence, whether absolute or conditional, and to test for the formation of convergence clubs. For this purpose, the Phillips and Sul (2007) time series methodology is applied, using monthly data deflated by the IGP-DI and converted into current US dollars. The results indicate the absence of global convergence but reveal the formation of two distinct clubs: one composed of Brazilian prices (Curitiba and Porto Alegre) and another formed by international prices (Kansas, Chicago, and Up River). This differentiation shows that, although domestic prices follow international movements, they retain structural specificities related to import dependence, the absence of futures contracts, and the distinct seasonality of harvests, which constrain full integration. These factors highlight the importance of policies that strengthen the competitiveness of the sector, expand marketing infrastructure, and reduce vulnerability to external shocks. Tipo: Artigo de Periódico

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