Programs and Communities

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.

The electric transportation (ET) and electric vehicle (EV) landscape is currently inequitable and inaccessible for many living in the Phoenix area. This is especially true for people without single-occupancy vehicles (SOVs), who are reliant on public transit, or do not live in the Metropolitan center. Transit is intricately related to the environment and, due to societal and political structures, most of these environmental injustices are concentrated in low-income and minority communities. The lack of political representation within these communities has led to increased exposure to a variety of issues. Equitable transportation has also suffered due to a significant gap in addressing the needs of these underserved communities (Bolin, et al., 2005). The concentration of inequities and environmental injustices is a direct result of the lack of representation. Therefore, equitable and inclusive collaboration on solutions is required in order to maintain fairness and access, (Clement, 2020) considering the legacy of institutional harm within historically marginalized communities. The TE Activator was created by Salt River Project (SRP) and Anthesis Group, a sustainability consulting agency. The Activator is a group of Phoenix-area organizations interested in shaping the ET landscape to positively influence the well-being of Arizonans. With this in mind, they have asked our team to focus on making the transition to electric transportation equitable and inclusive. Our report details the current state of electric transportation nationally and locally, analyzes equitable EV/ET programs and utility plans across the country, and reviews the City of Tempe’s electric transportation related efforts. For this, we conducted listening sessions with a national expert, the City of Tempe, Tempe Community Action Agency, and CHISPA, creating a Community Listening Pilot Project based on the preliminary listening sessions. Through our research, listening, and discussions we compiled tiered recommendations for the TE Activator that suggest systemic policy changes based on community priorities. Accompanying the report is an Equity Roadmap, Community Listening Script, and one-page Debrief.

The electric transportation (ET) and electric vehicle (EV) landscape is currently inequitable and inaccessible for many living in the Phoenix area. This is especially true for people without single-occupancy vehicles (SOVs), who are reliant on public transit, or do not live in the Metropolitan center. Transit is intricately related to the environment and, due to societal and political structures, most of these environmental injustices are concentrated in low-income and minority communities. The lack of political representation within these communities has led to increased exposure to a variety of issues. Equitable transportation has also suffered due to a significant gap in addressing the needs of these underserved communities (Bolin, et al., 2005). The concentration of inequities and environmental injustices is a direct result of the lack of representation. Therefore, equitable and inclusive collaboration on solutions is required in order to maintain fairness and access, (Clement, 2020) considering the legacy of institutional harm within historically marginalized communities. The TE Activator was created by Salt River Project (SRP) and Anthesis Group, a sustainability consulting agency. The Activator is a group of Phoenix-area organizations interested in shaping the ET landscape to positively influence the well-being of Arizonans. With this in mind, they have asked our team to focus on making the transition to electric transportation equitable and inclusive. Our report details the current state of electric transportation nationally and locally, analyzes equitable EV/ET programs and utility plans across the country, and reviews the City of Tempe’s electric transportation related efforts. For this, we conducted listening sessions with a national expert, the City of Tempe, Tempe Community Action Agency, and CHISPA, creating a Community Listening Pilot Project based on the preliminary listening sessions. Through our research, listening, and discussions we compiled tiered recommendations for the TE Activator that suggest systemic policy changes based on community priorities. Accompanying the report is an Equity Roadmap, Community Listening Script, and one-page Debrief.

The electric transportation (ET) and electric vehicle (EV) landscape is currently inequitable and inaccessible for many living in the Phoenix area. This is especially true for people without single-occupancy vehicles (SOVs), who are reliant on public transit, or do not live in the Metropolitan center. Transit is intricately related to the environment and, due to societal and political structures, most of these environmental injustices are concentrated in low-income and minority communities. The lack of political representation within these communities has led to increased exposure to a variety of issues. Equitable transportation has also suffered due to a significant gap in addressing the needs of these underserved communities (Bolin, et al., 2005). The concentration of inequities and environmental injustices is a direct result of the lack of representation. Therefore, equitable and inclusive collaboration on solutions is required in order to maintain fairness and access, (Clement, 2020) considering the legacy of institutional harm within historically marginalized communities. The TE Activator was created by Salt River Project (SRP) and Anthesis Group, a sustainability consulting agency. The Activator is a group of Phoenix-area organizations interested in shaping the ET landscape to positively influence the well-being of Arizonans. With this in mind, they have asked our team to focus on making the transition to electric transportation equitable and inclusive. Our report details the current state of electric transportation nationally and locally, analyzes equitable EV/ET programs and utility plans across the country, and reviews the City of Tempe’s electric transportation related efforts. For this, we conducted listening sessions with a national expert, the City of Tempe, Tempe Community Action Agency, and CHISPA, creating a Community Listening Pilot Project based on the preliminary listening sessions. Through our research, listening, and discussions we compiled tiered recommendations for the TE Activator that suggest systemic policy changes based on community priorities. Accompanying the report is an Equity Roadmap, Community Listening Script, and one-page Debrief.

The electric transportation (ET) and electric vehicle (EV) landscape is currently inequitable and inaccessible for many living in the Phoenix area. This is especially true for people without single-occupancy vehicles (SOVs), who are reliant on public transit, or do not live in the Metropolitan center. Transit is intricately related to the environment and, due to societal and political structures, most of these environmental injustices are concentrated in low-income and minority communities. The lack of political representation within these communities has led to increased exposure to a variety of issues. Equitable transportation has also suffered due to a significant gap in addressing the needs of these underserved communities (Bolin, et al., 2005). The concentration of inequities and environmental injustices is a direct result of the lack of representation. Therefore, equitable and inclusive collaboration on solutions is required in order to maintain fairness and access, (Clement, 2020) considering the legacy of institutional harm within historically marginalized communities. The TE Activator was created by Salt River Project (SRP) and Anthesis Group, a sustainability consulting agency. The Activator is a group of Phoenix-area organizations interested in shaping the ET landscape to positively influence the well-being of Arizonans. With this in mind, they have asked our team to focus on making the transition to electric transportation equitable and inclusive. Our report details the current state of electric transportation nationally and locally, analyzes equitable EV/ET programs and utility plans across the country, and reviews the City of Tempe’s electric transportation related efforts. For this, we conducted listening sessions with a national expert, the City of Tempe, Tempe Community Action Agency, and CHISPA, creating a Community Listening Pilot Project based on the preliminary listening sessions. Through our research, listening, and discussions we compiled tiered recommendations for the TE Activator that suggest systemic policy changes based on community priorities. Accompanying the report is an Equity Roadmap, Community Listening Script, and one-page Debrief.

The electric transportation (ET) and electric vehicle (EV) landscape is currently inequitable and inaccessible for many living in the Phoenix area. This is especially true for people without single-occupancy vehicles (SOVs), who are reliant on public transit, or do not live in the Metropolitan center. Transit is intricately related to the environment and, due to societal and political structures, most of these environmental injustices are concentrated in low-income and minority communities. The lack of political representation within these communities has led to increased exposure to a variety of issues. Equitable transportation has also suffered due to a significant gap in addressing the needs of these underserved communities (Bolin, et al., 2005). The concentration of inequities and environmental injustices is a direct result of the lack of representation. Therefore, equitable and inclusive collaboration on solutions is required in order to maintain fairness and access, (Clement, 2020) considering the legacy of institutional harm within historically marginalized communities. The TE Activator was created by Salt River Project (SRP) and Anthesis Group, a sustainability consulting agency. The Activator is a group of Phoenix-area organizations interested in shaping the ET landscape to positively influence the well-being of Arizonans. With this in mind, they have asked our team to focus on making the transition to electric transportation equitable and inclusive. Our report details the current state of electric transportation nationally and locally, analyzes equitable EV/ET programs and utility plans across the country, and reviews the City of Tempe’s electric transportation related efforts. For this, we conducted listening sessions with a national expert, the City of Tempe, Tempe Community Action Agency, and CHISPA, creating a Community Listening Pilot Project based on the preliminary listening sessions. Through our research, listening, and discussions we compiled tiered recommendations for the TE Activator that suggest systemic policy changes based on community priorities. Accompanying the report is an Equity Roadmap, Community Listening Script, and one-page Debrief.