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result(s) for
"Rivera, Jason"
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The likelihood of having a household emergency plan: understanding factors in the US context
2020
Individual household emergency planning is the most fundamental and can be the least expensive way to prepare for natural disasters. However, despite government and nonprofit educational campaigns, many Americans still do not have a household plan. Using a national sample of Americans, this research observes factors that influence people’s likelihood of developing a household emergency plan. Based on the analysis, people’s efficacy in preparedness activities, previous exposure to disasters and preparedness information positively influence the likelihood that someone will have developed a household emergency plan. Alternatively, demographic variables such as being Hispanic/Latino, identifying as Asian, and being a renter decrease the likelihood that someone will have developed a plan in the American context. But, the reason for these negative relationships are unclear. Subsequent to the analysis, recommendations for future research are provided to better understand observed relationships.
Journal Article
When attaining the best sample is out of reach: Nonprobability alternatives when engaging in public administration research
2019
Across all social science disciplines, but in particular public administration, there is a shared concern about the costs of using traditional random samples to generate data, and its impact on researchers' ability to engage in \"quality\" research. As a result of these costs, more academics, practitioners, and students are turning to nonprobability sampling methods. However, beyond the notion that these sampling strategies reduce the external validity of findings, individuals engaging in these strategies are doing so in ill-conceived ways due to the lack of attention and examples within mainstream public administration literature that provide researchers with the knowledge on how to best utilize these strategies. As a result, this article seeks to provide public administration practitioners, Master of Public Administration students, and scholars an understanding of and guidance in deciding to utilize three nonprobabilistic methods, convenience sampling, purposive sampling, and sample matching. This article is intended to be used as a supplement to materials and texts already currently being used within methods courses.
Journal Article
Factors influencing preparedness self-efficacy among Hispanics and Latinos in the United States
2022
PurposeCurrently there is a lack of information regarding factors that influence individuals' disaster preparedness self-efficacy among various minority groups in the US. This research seeks to start filling this gap of knowledge by exploring potential factors among Hispanics and Latinos.Design/methodology/approachThis research uses disaggregated data from the 2020 FEMA National Household Survey to explore potential factors associated with preparedness self-efficacy among Hispanics and Latinos in the US. The study uses an ordered logistic regression to analyze data.FindingsThis research finds that Hispanics' and Latinos' preparedness self-efficacy is statistically related to their income and the FEMA region in which they live, but not prior disaster experience nor exposure and access to disaster preparedness information.Originality/valueThis paper is unique because of the current lack of information available on what specifically contributes to Hispanics' and Latinos' preparedness self-efficacy.
Journal Article
Impact of Isolation During the COVID-19 Pandemic on the Patient Burden of Parkinson’s Disease: A PMD Alliance Survey
by
Torres-Yaghi, Yasar
,
Musick, Kelli
,
Hermanowicz, Neal
in
anxiety
,
Complications and side effects
,
COVID-19
2022
As the COVID-19 pandemic resulted in social restrictions around the globe, this cross-sectional survey aimed to assess the impact of social isolation on self- or proxy-reported symptoms of Parkinson's disease (PD) during the pandemic.
The survey was distributed among 7109 subscribers of the Parkinson and Movement Disorders Alliance (PMD Alliance) News and Information list and was open only to people with PD (PwP) and care partners (CP, defined as main caregivers of PwP and serving as proxy respondents). No attempt was made to identify PwP and CP pairs. The survey was distributed online using Survey Monkey between 01/06/2021 and 02/27/2021. Respondents were grouped by level of social support from outside of their household during the pandemic (decreased or maintained [ie, the same as pre-pandemic or increased]).
Of 7109 invited participants, 718 responded to the survey (response rate 10.1%). PwP (self-reports) accounted for 70.6% of respondents and CP (proxy reports) for 29.4%. Decreased social support from outside of the household during the COVID-19 pandemic (58.5% of all responses) was significantly associated with increases in sadness/depression and anxiety, compared with maintained levels of social support (p < 0.0001 for both comparisons). It was also associated with increased burden of several non-motor (decline in memory, problem solving, or communication, p = 0.0009; new or worsening confusion, p < 0.0001; new or worsening delusions, p = 0.018) and motor PD symptoms.
Decline in social support from outside of the household during the COVID-19 pandemic showed a statistically significant and negative association with the burden of mood and non-motor symptoms of PD. These results call for increased vigilance towards non-motor symptoms in PwP experiencing social isolation and highlight the need for stronger provider focus on encouraging PwP and their CPs to build and maintain social connections and engagements.
Journal Article
Effects of six pyrimidine analogs on the growth of Tetrahymena thermophila and their implications in pyrimidine metabolism
2023
Tetrahymena are ciliated protists that have been used to study the effects of toxic chemicals, including anticancer drugs. In this study, we tested the inhibitory effects of six pyrimidine analogs (5-fluorouracil, floxuridine, 5’-deoxy-5-fluorouridine, 5-fluorouridine, gemcitabine, and cytarabine) on wild-type CU428 and conditional mutant NP1 Tetrahymena thermophila at room temperature and the restrictive temperature (37°C) where NP1 does not form the oral apparatus. We found that phagocytosis was not required for pyrimidine analog entry and that all tested pyrimidine analogs inhibited growth except for cytarabine. IC50 values did not significantly differ between CU428 and NP1 for the same analog at either room temperature or 37°C. To investigate the mechanism of inhibition, we used two pyrimidine bases (uracil and thymine) and three nucleosides (uridine, thymidine, and 5-methyluridine) to determine whether the inhibitory effects from the pyrimidine analogs were reversible. We found that the inhibitory effects from 5-fluorouracil could be reversed by uracil and thymine, from floxuridine could be reversed by thymidine, and from 5’-deoxy-5-fluorouridine could be reversed by uracil. None of the tested nucleobases or nucleosides could reverse the inhibitory effects of gemcitabine or 5-fluorouridine. Our results suggest that the five pyrimidine analogs act on different sites to inhibit T . thermophila growth and that nucleobases and nucleosides are metabolized differently in Tetrahymena .
Journal Article
The Manifestation of New Public Service Principles in Small-town Government
2021
Although New Public Service (NPS) principles are well known, their practice in local government settings has only been limitedly explored. As a means of better understanding governance practices that adhere to NPS principles in local contexts, this study engaged in a case study of Grand Island, New York. Through the analysis of interviews with elected officials and civic servant department heads, it is observed that public servants practice various public engagement strategies for gauging public sentiment and interests in public policy. However, these same public servants point out the challenges of public hearings and social media to understanding their citizens. Information on public servants’ notions of accountability is observed, which relates to how they view the public’s involvement in policy processes. Recommendations for future research are provided as a means of enhancing our understanding and development of more inclusive governance practices.
Journal Article
Evaluation of Bioactive Compounds and Antioxidant Activity in 51 Minor Tropical Fruits of Ecuador
by
Rivera, Jason
,
Heredia-Moya, Jorge
,
Villacís, Michael
in
acetone
,
Acidification
,
antioxidant activity
2023
Less common tropical fruits have been the subject of little research, leaving a vast field to be explored. In this context, a comprehensive study was carried out on the bioactive compounds and antioxidant capacity of 51 non-traditional fruits consumed in Ecuador. Vitamin C, organic acids, carotenoids, and phenolic compounds were evaluated using microextraction and rapid resolution liquid chromatography (RRLC) techniques, while antioxidant activity was measured using microplate readings. The results showed high levels of vitamin C (768.2 mg/100 g DW) in Dovyalis hebecarpa, total organic acids (37.2 g/100 g DW) in Passiflora tripartita, carotenoids (487.0 mg/100 g DW) in Momordica charantia, phenolic compounds (535.4 mg/g DW) in Nephelium lappaceum, Pourouma cecropiifolia (161.4 µmol TE/g DW) and Morus alba (80.5 µmol AAE/g DW) in antioxidant activity. Effective extraction of carotenoids was also observed using a mixture of methanol: acetone: dichloromethane (1:1:2) with an extraction time of 2 min, while an 80% solution of 0.1% acidified methanol with hydrochloric acid with an extraction time of 3 min was highly effective for phenolics in fruit. These results provide a valuable basis for optimising future extraction processes of bioactive compounds from non-traditional fruits, with significant implications for their potential use in various nutritional and pharmaceutical contexts.
Journal Article
Becoming a Care-Ready Institution: Operationalizing a Relational Framework for Student Success
2025
In contemporary higher education, outcomes-driven imperatives often privilege efficiency, data, and technology over relational dynamics that underpin student thriving. This article advances the argument that care, understood relationally, institutionally, and structurally, constitutes a form of capital with measurable impact on equity. Building on Bourdieu’s (1986) theory of capital and Yosso’s (2005) framework of community cultural wealth, I introduce the C.A.R.E. Framework (Community and Connection, Accountability and Advocacy, Reflection and Relationships, Equity and Empowerment). Developed through years of leadership practice, this model conceptualizes care as a value and a resource, positioning care-readiness as a strategic and moral imperative for higher education.
Journal Article
Comportamiento de la inmisión en cuanto a material particulado (MP10 -MP2,5 - Partículas UF) en la estación Paiba, del Sistema de Vigilancia de Calidad del Aire, de la Universidad Distrital Francisco José de Caldas
by
García Leal, Stephany Alexandra
,
Murad Pedraza, José Alejandro
,
Martin Rivera, Jason Stevens
in
Air monitoring
,
Air pollution
,
Air quality
2024
El material particulado (MP) es una de las principales fuentes de contaminación del aire, lo que supone un riesgo significativo para la salud de las poblaciones vulnerables. El presente estudio analiza el comportamiento de concentraciones de MP (menor a 10, 2 ,5 micras y partículas ultrafinas [UF]) en la estación de la sede Paiba, del Sistema de Vigilancia de la Calidad del Aire (SVCA), de la Universidad Distrital Francisco José de Caldas. Se realizaron los procedimientos necesarios para obtener información meteorológica y de concentración de MP, se caracterizaron fuentes lineales y fijas en el área de influencia, y se realizó un análisis espacio temporal del comportamiento del MP. En la zona analizada, los hornos y calderas son las fuentes que más contaminan, y la mayoría de las fuentes de combustión utilizan gas como combustible. La malla vial arterial es la principal fuente de contaminación lineal. Además, se encontró una asociación débil entre las concentraciones de MP y las variables meteorológicas, pero se detectó una correlación estadísticamente significativa entre el MP10 y el MP2,5. Particulate matter (PM) is a major sources of air pollution, p osing significant health risks, particularly to vulnerable populations. This study examines the behavior of pm concentrations (PM 10, PM2.5, and ultrafine particles) at the Paiba station, part of the Air Quality Monitoring System (SVCA) at Universidad Distrital Francisco José de Caldas. Meteorological data and pm concentration levels were collected and analyzed. Linear and stationary pollution sources in the area of influence were identifiedand characterized. A spatiotemporal analysis of PM behavior was also conducted. The findings indicate that furnaces and boilers are the most significant stationary sources of pollution in the area, with natural gas being the predominant fuel. Additionally, the arterial road network represents the main source of linear pollution. While only a weak association was found between PM concentrations and meteorological variables, a statistically significant correlation was observed between PM10 and PM2.5 levels. O material particulado (MP) é uma das principais fontes de poluição do ar, representando um risco significativo para a saúde de populações vulneráveis. O presente estudo analisa o comportamento das concentrações de MP (menor que 10, 2,5 micrômetros e p artículas ultrafinas [UF]) na estação da sede Paiba, do Sistema de Vigilância da Qualidade do Ar (SVCA), da Universidade Distrital Francisco José de Caldas. Foram realizados os procedimentos necessários para obter informaçõesmeteorológicas e de concentração de MP, caracterizaram-se fontes lineares e fixas na área de influência, e foi realizada uma análise espaço-temporal do comportamento do MP. Na área analisada, os fornos e caldeiras são as principais fontes de poluição, e a maioria das fontes de combustão utiliza gás como combustível. A malha viária arterial é a principal fonte de poluição linear. Além disso, foi encontrada uma pequena associação entre as concentrações de MP e as variáveis meteorológicas, mas detectou-se uma correlação estatisticamente significativa entre o MP10 e o MP2,5
Journal Article