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Complexities of Simulating a Hybrid Agent-Landscape Model using Multi-Formalism Composability

ContributorsMayer, Gary R. (Author) / Sarjoughian, Hessam S. (Author)
Created2007
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Addressing COVID-19 Vaccine Hesitancy Among Korean Americans Via Digital Storytelling: Lessons Borrowed from Vaccine Uptake Research

Description
Background: The COVID-19 pandemic has been causing high rates of hospitalization and death among the marginalized Asian American Pacific Islander (AAPI) community. Disaggregated data revealed low COVID-19 vaccine uptake among Korean Americans/Immigrants (KA/I) due to vaccine-related fears unaddressed by cultural and linguistic barriers. Prior evidence demonstrates that digital storytelling (DST)…

Background: The COVID-19 pandemic has been causing high rates of hospitalization and death among the marginalized Asian American Pacific Islander (AAPI) community. Disaggregated data revealed low COVID-19 vaccine uptake among Korean Americans/Immigrants (KA/I) due to vaccine-related fears unaddressed by cultural and linguistic barriers. Prior evidence demonstrates that digital storytelling (DST) is an effective medium to improve recommended vaccine intent and uptake among AAPIs. Objective: This DNP project aimed to assess the effect of DST intervention on improving KA/I’s COVID-19-related vaccine hesitancy, intent, and uptake. Methods: A quasi-experimental design was conducted, with participants (n=4) self-identifying as KA/I adults with English or Korean fluency residing in the U.S. Participants were recruited online via convenience sampling from CARE (Collaborative Approach for AAPI Research and Education). Individuals who had already received COVID-19 vaccines were excluded. The intervention included two first-person audiovisual stories documenting the personal experience of receiving the COVID-19 vaccine. Outcomes were measured via a pre-post-1-month-follow-up survey utilizing a modified Vaccine Hesitancy Scale (? = 0.72) and Narrative Quality Assessment Tool (? = 0.78-0.81). Results: DST intervention had a marginally significant effect on lowering post-COVID-19 vaccine hesitancy scores (p = 0.068). Participants (n=2) who rated the DST videos with a higher score indicated vaccine uptake at one-month follow-up. Conclusion: This cost-effective, sustainable, and scalable DST evidence-based project has the potential to promote COVID-19 vaccination among KA/I and other AAPI groups with appropriate modification.
ContributorsYoon, Paula (Author) / Chen, Angela (Thesis advisor) / Arizona State University. College of Nursing & Healthcare Innovation (Contributor)
Created2022-05-01
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Addressing Low Vaccination in a Free Clinic

Description
Background: Vaccination is an effective public health tool; however, immunization rates are low in American adults, with disparities existing for Hispanics compared to non-Hispanic Caucasians, uninsured individuals, undocumented immigrants, and low-income individuals (Lu et al., 2014; Lu et al., 2015; Williams et al., 2016). Consequently, 42,000 adults still die each…

Background: Vaccination is an effective public health tool; however, immunization rates are low in American adults, with disparities existing for Hispanics compared to non-Hispanic Caucasians, uninsured individuals, undocumented immigrants, and low-income individuals (Lu et al., 2014; Lu et al., 2015; Williams et al., 2016). Consequently, 42,000 adults still die each year in the United States (US) from vaccine-preventable diseases, and nine billion dollars are spent on associated healthcare costs and lost productivity (ADHS, 2015; Wilson et al., 2019). To improve adult vaccination rates, the National Vaccine Advisory Committee recommends the Standards for Adult Immunization Practices, including regular assessment, recommendation, delivery or referral, and documentation during follow-up on vaccination (Orenstein et al., 2014; CDC, 2016). Local problem: A free clinic in Arizona serving uninsured, undocumented Latin American immigrants had low vaccination rates and a deficiency in vaccination documentation in electronic medical records. Methods: An evidence-based quality improvement project was conducted to address low vaccination rates and provider practices using a multi-component intervention. The effect and usage were evaluated through chart audits and pre- post-intervention surveys. Interventions: A vaccination questionnaire was administered at all in-person primary care visits. Brief educational videos were provided to providers and office staff before the intervention addressing the questionnaire's use, purpose, and goals. Adult immunization schedule printouts were made available in all patient rooms and provider charting areas. Additionally, a resource sheet on local free immunization programs was created for providers and patients. Results: The intervention's effect was unable to be determined due to a breakdown in the protocol after the second week of implementation. However, 92% of completed questionnaires reviewed indicated the patient needed one or more vaccination. Sixty-five percent of electronic medical records reviewed had no vaccination documentation historically for assessment, recommendation, referral, follow-up, or scanned vaccination records. No charts reviewed had these areas documented regularly. Conclusion: Vaccination rates and the Standards of Adult Immunization Practices are low at the free clinic. Further quality improvement measures are indicated addressing barriers present.
ContributorsDukes, Alyssa (Author) / Ochieng, Judith (Thesis advisor) / Arizona State University. College of Nursing & Healthcare Innovation (Contributor)
Created2021-04-27

Alternative Futures of the Past: Modeling Neolithic Landuse and its Consequences in the Ancient Mediterranean

ContributorsUllah, Isaac I. T., 1979- (Author) / Barton, C. Michael (Author)
Created2007

Simulation Modeling for Human Community and Agricultural Landuse

ContributorsMayer, Gary R. (Author) / Sarjoughian, Hessam S. (Author) / Allen, Eowyn K. (Author) / Falconer, Steven E. (Author) / Barton, C. Michael (Author)
Created2006

Composing Agent and Landscape Models: An Example from the Mediterranean

Description

Invited paper presented at the Workshop on Aspects of Social and Socio-Environmental Dynamics, Arizona State University, January 2007.

ContributorsSarjoughian, Hessam S. (Author) / Barton, C. Michael (Author)
Created2007

Modeling Impacts of Landuse Practices on Mediterranean Landscapes

ContributorsBarton, C. Michael (Author) / Ullah, Isaac I. T., 1979- (Author)
Created2006
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Modeling Complex Ecodynamics in Mediterranean Landscapes

ContributorsBarton, C. Michael (Author)
Created2010

Archaeology in the Classroom: Mediterranean Landscape Dynamics Educational Outreach

ContributorsSwantek, Laura Anne (Author)
Created2010

Composing Hybrid Discrete Event System and Cellular Automata Models

Description

Hybrid system models - those devised from two or more disparate sub-system models - provide a number of benefits in terms of conceptualization, development, and assessment of dynamical systems. The decomposition approach helps to formulate complex interactions that are otherwise difficult or impractical to express. However, hybrid model development and…

Hybrid system models - those devised from two or more disparate sub-system models - provide a number of benefits in terms of conceptualization, development, and assessment of dynamical systems. The decomposition approach helps to formulate complex interactions that are otherwise difficult or impractical to express. However, hybrid model development and usage can introduce complexity that emerges from the composition itself.

To improve assurance of model correctness, sub-systems using disparate modeling formalisms must be integrated above and beyond just the data and control level; their composition must have model specification and simulation execution aspects as well. Poly-formalism composition is one approach to composing models in this manner.

This dissertation describes a poly-formalism composition between a Discrete EVent System specification (DEVS) model and a Cellular Automata (CA) model types. These model specifications have been chosen for their broad applicability in important and emerging domains. An agent-environment domain exemplifies the composition approach. The inherent spatial relations within a CA make it well-suited for environmental representations. Similarly, the component-based nature of agents fits well within the hierarchical component structure of DEVS.

This composition employs the use of a third model, called an interaction model, that includes methods for integrating the two model types at a formalism level, at a systems architecture level, and at a model execution level. A prototype framework using DEVS for the agent model and GRASS for the environment has been developed and is described. Furthermore, this dissertation explains how the concepts of this composition approach are being applied to a real-world research project.

This dissertation expands the tool set modelers in computer science and other disciplines have in order to build hybrid system models, and provides an interaction model for an on-going research project. The concepts and models presented in this dissertation demonstrate the feasibility of composition between discrete-event agents and discrete-time cellular automata. Furthermore, it provides concepts and models that may be applied directly, or used by a modeler to devise compositions for other research efforts.
ContributorsMayer, Gary R. (Author)
Created2009