Browsing by Author "Rivera, Diego"

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    Analyzing the far-right political action on Twitter: the Chilean constituent process
    (2022) Riquelme, Fabian; Rivera, Diego; Serrano, Benjamin
    The concept of "politics of the end" assumes the catastrophe of living in a world that produces new forms of accumulation and allows symbolic and semiotic capital to create value. Currently, various far-right movements worldwide seem to appropriate this concept, employing radical communication strategies as a repertoire to contest the public agenda. These strategies include the massive creation of bots on social networks to spread hate speech and coordinate ideological manifestations. This article seeks to verify the use of these strategies by the Chilean far-right on Twitter. For the above, a social network analysis approach is proposed during the current socio-political crisis in Chile, which began with the massive protests of October 2019 and led to an unprecedented constituent process. For nine months, we studied five opinion leaders on Twitter from the Chilean far-right, who together have more than 600 thousand followers and almost 130 thousand followings. Through descriptive, quantitative, and qualitative techniques, an explicit political action "from the resistance" is revealed in the activity of the network, which includes hundreds of new users and coordinated bots to disseminate identifiable discourses with strongly ideological ideas. This coordination also presents identifiable differences in how opinion leaders interact and communicate with their network environment.
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    Atmospheric water collection across diverse climates along the Chilean coast: unraveling synoptic to local drivers of fog harvesting
    (EGU General Assembly, 2025) Río López, Camilo del; Lobos Roco, Felipe Andres; Espinoza Escobedo, Vicente Patricio; Keim Vera, Klaus Kurt; Valdivia Matteoda, Nicolas Felipe; Vargas Vásquez, Constanza Giovanna; Rivera, Diego
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    Atmospheric water collection across diverse climates along the Chilean coast: unraveling synoptic to local drivers of fog harvesting
    (EGU General Assembly, 2025) Río López, Camilo del; Lobos Roco, Felipe Andres; Espinoza Escobedo, Vicente Patricio; Keim Vera, Klaus Kurt; Valdivia Matteoda, Nicolas Felipe; Vargas Vásquez, Constanza Giovanna; Rivera, Diego
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    Comparing Methods for the Regionalization of Intensity-Duration-Frequency (IDF) Curve Parameters in Sparsely-Gauged and Ungauged Areas of Central Chile
    (2023) Sanguesa, Claudia; Pizarro, Roberto; Ingram, Ben; Ibanez, Alfredo; Rivera, Diego; Garcia-Chevesich, Pablo; Pino, Juan; Perez, Felipe; Balocchi, Francisco; Pena, Francisco
    Estimating intensity-duration-frequency (IDF) curves requires local historical information of precipitation intensity. When such information is unavailable, as in areas without rain gauges, it is necessary to consider other methods to estimate curve parameters. In this study, three methods were explored to estimate IDF curves in ungauged areas: Kriging (KG), Inverse Distance Weighting (IDW), and Storm Index (SI). To test the viability of these methods, historical data collected from 31 rain gauges distributed in central Chile, 35 degrees S to 38 degrees S, are used. As a result of the reduced number of rain gauges to evaluate the performance of each method, we used LOOCV (Leaving One Out Cross Validation). The results indicate that KG was limited due to the sparse distribution of rain gauges in central Chile. SI (a linear scaling method) showed the smallest prediction error in all of the ungauged locations, and outperformed both KG and IDW. However, the SI method does not provide estimates of uncertainty, as is possible with KG. The simplicity of SI renders it a viable method for extrapolating IDF curves to locations without data in the central zone of Chile.
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    Design of an Electronic Health Record for Treating and Monitoring Oncology Patients in Chile
    (2023) Taramasco, Carla; Rivera, Diego; Guerrero, Camilo; Marquez, Gaston
    Identifying the clinical needs to evaluate and manage the treatment and monitoring of cancer patients is a multidimensional challenge in healthcare institutions. In this regard, electronic health records (EHRs) are beneficial for managing clinical information; however, EHRs focused exclusively on patients with cancer have not been sufficiently adopted. In Chile, the need for oncology EHR has only been briefly addressed, resulting in insufficient updated and systematized information on oncology patients. In this paper, we propose the design of an oncology EHR that manages critical variables and processes for the treatment and monitoring of patients with cancer in Chile. We used a systematic methodology to design a software architecture oriented to focus groups and interviews to elicit the requirements and needs of stakeholders. We created and described an EHR design that considers four modules that group and manage the main variables and processes that are critical for treating and monitoring oncology patients. Enabling and designing a treatment and monitoring registry for cancer patients in Chile is essential because it allows for the evaluation of strategic clinical decisions in favor of patients.