Programs and Communities
The collection collates collections by schools, centers, programs, and research groups.
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- All Subjects: Food Systems
- All Subjects: Neolithic period
Interview with Ashley Schimke, Farm to School Specialist for Arizona Department of Education
Ashley Schimke is the Farm to School Specialist for the Arizona Department of Education. Her experience working in the Phoenix community gave her an introduction to the struggles of the less fortunate within the Valley. Working with the Arizona Department of Education Ashley had the opportunity to bridge the gap between the education system and local producers. She seeks to give students the nutrition to focus and learn as well as the education to make healthy choices. Understanding food systems become more of an experience for students, which promotes a continual interest. Her work engages the next generation in an effort to change how they understand their environment and their food.
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 original intent of the project was to attempt to mitigate the complex sustainability issue of systematic food waste via creating a guide that would educate users how to create a food saving organization that prevents edible food from ending up in landfills. The guide was going to be based on a nonprofit organization my family and I founded called Epic Cure, that has activated programs that serve to relieve community food insecurity, encourage community connectedness, support environmental health, and empower youth with entrepreneurial opportunity. The development of the guide was going to be based on my personal experience developing and running the organization, as well as my understanding of sustainable systems and frameworks. However, the original scope and plan of this project has shifted considerably since the outbreak of the COVID-19 virus. I have decided to put the guide on hold so that I can step into a space of agency via working in real time, to adapt my organization so that we can continue to operate when we are most needed. This shift is a response to the health and economic crisis that continues to unfold daily. In order to sustain the wellbeing of communities, the adaptation of a food aid service in the time of the crisis is an imminent need. This project shift not only serves to provide emergency relief, but also to identify gaps in the food distribution system and the supply chains that NGOs like Epic-Cure rely on so that we might be more resilient in the face of future shocks to the systems.
For the community engagement piece of the project, existing community engagement protocols and frameworks were compared. The most effective strategies were then selected and combined into a single adaptive framework. Assets Based Community Development, the Sustainable Neighborhood for Happiness Index, and the six types of capital are used as the foundational structure of the Community System Map. A Community Food System map was then organized using a “hub” approach, and the Residential Edible Landscaping map was organized based off of field experience. The nested systems illustrate just how complex the community food system really is. The outcome of the project is the first iteration of an adaptive tool that can be used by for-profit or non-profit organizations to co-create and interdependently manage local community food systems.
The project focuses on the creation of 300 pest identification booklets that provide five villages in Kaffrine the proper education to prevent locust plagues from forming. I have partnered with the Global Locust Initiative (GLI) to help make these booklets come to fruition as the booklets target the lack of early detection awareness that is at the root of locust plagues. By providing the villages with these booklets, the farmers and community members, will be more educated on how to identify and act on the early threats of a plague. Additional outcomes of creating these booklets are as follows: improved well-being of the farming community, increased millet yields, and enhanced global food system sustainability. As locusts are a migratory pest, it is recommended that more stakeholders are provided the proper educational material to help them identify the early threats of a locust plague to prevent negative externalities from being imposed on the surrounding ecology, individuals, and agriculture.
Invited paper presented at the Workshop on Aspects of Social and Socio-Environmental Dynamics, Arizona State University, January 2007.