
Shu Wei Chou-ChenUniversity of Costa Rica | UCR · Escuela de Estadística
Shu Wei Chou-Chen
PhD in Statistics
About
18
Publications
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Introduction
Skills and Expertise
Publications
Publications (18)
Los modelos espaciales que suavizan las tasas de mortalidad estandarizada o los riesgos relativos son utilizados ampliamente en el mapeo de enfermedades, con el objetivo de explorar y describir patrones espaciales de un evento de interés. Generalmente, la estimación de estos riesgos relativos es imprecisa cuando los eventos son raros. Cuando se qui...
The class of locally stationary processes assumes that there is a time-varying spectral representation, that is, the existence of finite second moment. We propose the α-stable locally stationary process by modifying the innovations into stable distributions and the indirect inference to estimate this type of model. Due to the infinite variance, som...
Additive partial linear models with symmetric autoregressive errors of order p are proposed in this paper for modeling time series data. Specifically, we apply this model class to explain the weekly hospitalization for respiratory diseases in Sorocaba, São Paulo, Brazil, by incorporating climate and pollution as covariates, trend and seasonality. T...
Respiratory diseases represent one of the most significant economic burdens on healthcare systems worldwide. The variation in the increasing number of cases depends greatly on climatic seasonal effects, socioeconomic factors, and pollution. Therefore, understanding these variations and obtaining precise forecasts allows health authorities to make c...
Due to the rapid geographic spread of the Aedes mosquito and the increase in dengue incidence, dengue fever has been an increasing concern for public health authorities in tropical and subtropical countries worldwide. Significant challenges such as climate change, the burden on health systems, and the rise of insecticide resistance highlight the ne...
Dengue transmission poses significant challenges for public health authorities worldwide due to its susceptibility to various factors, including environmental and climate variability, affecting its incidence and geographic spread. This study focuses on Costa Rica, a country characterized by diverse microclimates nearby, where dengue has been endemi...
La movilidad en Costa Rica es un tema complejo debido a la falta de ordenamiento territorial de la Gran Área Metropolitana (GAM). La crisis sanitaria global causada por la pandemia del COVID-19 cambió considerablemente los patrones de movilidad en el país a causa de restricciones vehiculares, y de actividades económicas, impuestas por el gobierno p...
Regional climate models (RCM) describe the mesoscale global atmospheric and
oceanic dynamics and serve as dynamical downscaling models. In other words,
RCMs use atmospheric and oceanic climate output from general circulation
models (GCM) to develop a higher resolution climate output. They are computationally
demanding and, depending on the applicat...
The class of locally stationary processes assumes a time-varying(tv) spectral representation and finite second moment. Different areas have observed phenomena with heavy tail distributions or infinite variance. Using stable distribution as a heavy-tailed innovation is an attractive option. However, its estimation is difficult due to the absence of...
Due to the rapid geographic spread of the Aedes mosquito and the increase in dengue incidence, dengue fever has been an increasing concern for public health authorities in tropical and subtropical countries worldwide. Significant challenges such as climate change, the burden on health systems, and the rise of insecticide resistance highlight the ne...
Dengue fever is a vector-borne disease affecting millions yearly, mostly in tropical and subtropical countries. Driven mainly by social and environmental factors, dengue incidence and geographical expansion have increased in recent decades. Therefore, understanding how climate variables drive dengue outbreaks is challenging and a problem of interes...
Throughout history, prevention and control of dengue transmission have challenged public health authorities worldwide. In the last decades, the interaction of multiple factors, such as environmental and climate variability, has influenced increments in incidence and geographical spread of the virus. In Costa Rica, a country characterized by multipl...
Objective
To summarize the results of research conducted in Costa Rica in which mathematical and statistical methods were implemented to study the transmission dynamics of mosquito-borne diseases.
Methods
Three articles with mathematical and statistical analysis on vector-borne diseases in Costa Rica were selected and reviewed. These papers show t...
Regional Climate Models (RCM) describe the medium scale global atmospheric and oceanic dynamics and serve as downscaling models. RCMs use atmospheric interactions in General Circulation Models (GCM) to develop a higher resolution output. They are computationally demanding and require orders of magnitude more computer time than statistical downscali...
Dengue fever is a vector-borne disease mostly endemic to tropical and subtropical countries that affect millions every year and is considered a significant burden for public health. Its geographic distribution makes it highly sensitive to climate conditions. Here, we explore the effect of climate variables using the Generalized Additive Model for l...
The modeling of infectious diseases provides valuable input in the development of mitigating strategiesand implementation of public health interventions. We highlight results and current research conductedin Costa Rica using mathematical and statistical tools to develop optimal strategies for mosquito controland mosquito-borne disease prevention/co...
The class of locally stationary processes assumes that there is a time-varying spectral representation, that is, the existence of finite second moment. We propose the $\alpha$-stable locally stationary process by modifying the innovations into stable distributions and the indirect inference to estimate this type of model. Due to the infinite varian...
p>Una de las medidas más relevantes para la mitigación del cambio climático es la conservación y regeneración del bosque en nuestros países. La cantidad de carbono que se almacena en la biomasa arbórea pasa a ser una medida relevante para la política pública. El presente trabajo analiza la asociación que tienen algunas variables dasométricas, fácil...