Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

Campaign coverage would prefer strategic game and personalization topics more than public policy proposals. Instead, electoral debates on television are expected differentiate from the journalistic routine. Through a content analysis, the journalists’ agenda in four Chilean presidential debates is compared with that of the written press in the coverage of the respective campaigns. The results show that journalists in the debates focus on public policies, while the press concentrates on strategies or political issues.

Based on research on the deployment of a community Internet network in 2019 and 2020 in a rural community of Córdoba, Argentina, the collaboration strategies between organizations to produce technological and political knowledge are analyzed. The compatibility between the approaches of technological sovereignty and food sovereignty; the education-action methodology in the territory, face-to-face, collective and experiential; cooperation during the maintenance and extension of the network; articulation with other community networks and incidence on politics stand out.

A network product of the virtual march of LGBT+ Pride in Mexico City is analyzed in the context of covid-19. Through the Social Networks Analysis (SNA), 7 558 nodes and 13 527 interactions were collected around the hashtag #ElOrgulloPermanece during June 2020. Among the results, it stands out that the users with the greatest relevance on the Internet are producers of LGBT+ content, who together with other users build a collective sense through the interaction and dissemination of said content. These communicative practices are part of contemporary activism.

This article analyzes the contribution of mobile device applications to political discourse in the US presidential election between Joe Biden and Donald Trump in 2020. The sample consisted of 101 applications (apps) and the analysis was based on a qualitative methodology that examined the popularity and discourse features of these apps. The results reflect a wide range of developments that oscillate between commercial interest and a form of blurred political engagement located somewhere across entertainment, parody and virality.

This study departs from a commons framework of analysis to compare the internal communication practices of seven csas from Portugal. By looking at governance, economy, knowledge, technology and eco-social justice, our findings reveal there is no food commoning without communication. Based on action-research and militant ethnography methods, the study combines a focus group, visual methods and interviews, and contributes with an original approach to communication studies from a commons epistemology.

This paper analyzes the journalistic coverage of social movements in Ibero-America over the last ten years (2011-2021). A systematic review of the literature was carried out to analyze the diffusion of social activism in the press. Thus, the set of sources was analyzed, identifying, in the traditional media, coverage related to the political power and the reinforcement of stereotypes, and, in digital journalism, an approach that delves into the causes and consequences of social movements, providing them with spaces for discussion and collective practices.

Digital media have enhanced the user-media-content relationship. Now the challenge for cyberjournalism is to encourage audience participation and engagement, which is why interactivity is essential. To distinguish between the types of interactivity that can be applied in journalism, we analyzed 23 publications from the world’s most subscribed cybermedia. We found that the most used types of interactivity are personalization and social. But generative and navigational interactivity, with augmented reality and immersion, are almost non-existent, thus being challenges for the sector.

Payments for environmental services are part of a new and more direct conservation paradigm, which explicitly recognizes the need to create bridges between the interests of landowners and service users. Thus, the soil of the Chimborazo Fauna Production Reserve is a carbon reservoir. Then, it is here where there is a need to conduct scientific studies on its carbon storage capacity under different types of vegetation coverage. For this purpose, researchers elaborated cells for each ecosystem with the help of a geographic information system employing geoprocessing tools; a total of 819 sampling sites were established in 58560 ha. The samples were taken at a depth of 0 cm - 30 cm, and the results were entered into a database in ARC GIS, where a mask was created, extrapolating the carbon content in the entire reserve area. As a result, a higher C content was evidenced in the evergreen forest (BsSN01) and grassland (HsSn02) of the moorland, with 378.16 Mg of organic carbon (OC) and in total, 4 379581.43 Mg of OC that can be offered to the international market in carbon bonds. In this sense, it is necessary to evaluate from an economic-environmental perspective the ecosystem services that the Chimborazo Wildlife Production Reserve offers, in this case, as a carbon store in the soil, so that the economic stimuli are attractive for landowners.

La leña ha sido el dendroenergético más utilizado a escala residencial en regiones del centro y sur de Chile y su alto consumo en zonas urbanas ha afectado gravemente la calidad atmosférica. El objetivo de este trabajo fue analizar cómo factores económicos, sociodemográficos y características de la vivienda inciden en el consumo de leña de hogares en seis regiones del centro sur de Chile. Primero, se estudió el efecto en la probabilidad de consumir leña, mediante estimaciones logit y, luego, sobre la cantidad consumida con modelos Tobit, tanto para el área de estudio como por región. Se observó, a escala global, que aumentos en los ingresos del hogar incrementaron la probabilidad de consumir leña y las cantidades consumidas, siendo más fuerte el efecto en las cantidades. No obstante, el impacto entre regiones es muy distinto. Además, el consumo de leña disminuye frente a un aumento de su precio y aumenta ante el incremento del precio del gas siendo un bien sustituto. Aspectos sociodemográficos y características de la vivienda, como número de personas en el hogar, edad del jefe de hogar y superficie construida, se relacionaron positivamente con el consumo de leña. Los resultados contribuyen a formular políticas públicas regionales, de manera de enfrentar el problema planteado

Este estudo teve por objetivo avaliar o desempenho de redes neurais artificiais (RNA) e máquinas de vetor de suporte (MVS) na modelagem volumétrica em povoamentos de eucalipto. Utilizou-se dados oriundos de plantios comerciais não desbastados, localizados em quatro municípios na mesorregião sul do estado do Amapá e foram disponibilizados por uma empresa privada. Foram ajustados modelos volumétricos consagrados na literatura e comparados com a técnica de MVS e de RNA. Os dados foram divididos em 80% para treinamento e 20% para validação dos modelos, as mesmas variáveis dendrométricas utilizadas pelos modelos de regressão (dap e altura) foram utilizadas pelas MVS e RNA. Para o treinamento e generalização das MVS, foram utilizadas quatro configurações, formadas a partir de duas funções de erro e duas funções de Kernel. Para configuração, treinamento e generalização das RNA, foi utilizado o software NeuroForest - Volumetric, no qual foram utilizadas configurações de redes do tipo Adaline (Adaptive Linear Element); Multilayer Perceptron (MLP) e Funções de Base Radial (RBF). A qualidade dos ajustes dos modelos de regressão, e das metodologias utilizando RNA e MVS, foram avaliadas utilizando-se o coeficiente de correlação entre os volumes individuais observados e estimados (ryŷ), a raiz quadrada do erro médio, expresso em porcentagem da média (RMSE%), análise gráfica dos resíduos (Res%). Considerando os resultados, MVS e RNA obtiveram desempenho ligeiramente melhores, comparados à metodologia tradicional, nas estimativas de volume individual, demonstrando serem técnicas que se adequaram bem para aplicações na área de mensuração e manejo florestal.