Cape Verde

Solar tracking systems aim to optimize solar photovoltaic (PV) panel efficiency by maximizing exposure to sunlight. This paper explores solar tracking, its benefits, and various system types, emphasizing the goal of ensuring panels are perpendicular to the sun's rays. Tracking enhances energy generation potential compared to fixed installations, increasing output by 25-35%. This boosts return on investment and reduces payback periods. In agriculture, solar tracking promotes energy efficiency, productivity, and sustainability. However, long-term benefits, economic feasibility, and environmental impacts require further research. This study proposes evaluating solar panel output under different weather conditions, comparing tracking and non-tracking modes. The analysis concludes that tracking mode generates more power than non-tracking mode. This finding underscores the efficacy of solar tracking technology in maximizing energy production. Overall, adopting solar tracking systems can foster a greener, more sustainable future, particularly in agricultural contexts.

subenciones, 2018

2021

Poor ergonomics in production systems can compromise performance and cause musculoskeletal disorders (MSDs), which pose a huge cost to society, companies, and afflicted individuals. This thesis presents a research trajectory through the problem space by: 1) Identifying and quantifying workplace risk factors for MSDs, 2) Identifying how these risks relate to production strategies, and 3) Developing an approach to integrating ergonomics into a companies’ regular development work. A video analysis tool for quantifying postures while working was developed. The tools’ reliability, accuracy, and ability to identify risks for MSD were evaluated. The tool had generally good accuracy and good to moderate reliability. Low back MSDs were strongly associated with working trunk postures. Operators with high exposure to peak flexion level had 4.2 times higher MSD risk than unexposed operators. Similarly high peak extension velocity increased risk by 2.9 times. (Paper 1) Two pre-post case studie...

hfd

International Journal of Communication, 2022

Founded in 1968, the American Indian Movement (AIM) is a source of a complicated nostalgia for Indigenous activists today. AIM orchestrated many direct actions that remain instructive touchstones, including the 1973 occupation at Wounded Knee. Still, the organization has also been characterized by a masculinism often found in its famous iconography. During the 2016 mobilization against the Dakota Access Pipeline (#NoDAPL), common invocations of AIM by mainstream media revealed the contrast between these moments of struggle. Analyzing this contrast through the visual record of each mobilization, the author argues that nostalgia for AIM presents an opportunity to work through the colonial imposition of heteropatriarchal norms. Current Indigenous media makers have begun the work to demonstrate emancipatory gender politics that provide an elaboration of Indigenous representations of relationality, thereby attesting to the connections among feminist, queer, and ecological consciousness. Foregrounding the importance of tribal specificity, the author focuses on media produced on and of Lakota tribal homelands.