Abstract:

Cascading failures across a network propagate localized issues to more broad and potentially unexpected failures in the network. In power networks, where load must be delivered in real-time by a generation source, network layout is an important part of cascading failure analysis. In lieu of real power network data protected for security reasons, we can use synthetic networks for academic purposes in developing a validating methodology. A contingency analysis technique is used to identify cascading failures, and this involves randomly selecting initial failure points in the network and observing how current violations propagate across the network. This process is repeated many times to understand the breadth of potential failures that may occur, and the observed trends in failure propagation are analyzed and compared to generate recommendations to prevent and adapt to failure. Emphasis is placed on power transmission networks where failures can be more catastrophic.

To address the dearth of knowledge about person-based and trip-level exposure, we developed the Icarus model. Icarus uses mesoscale traffic model—activity-based model—to analyze the heat exposure of regions of interest at an individual level. The goal with Icarus was to design accurate, granular models of population and temperature behavior for a target region, which could be transformed into a heat exposure model by means of simulation and spatial-temporal joining. By combining and implementing the most robust software and data available, Icarus was able to capture person-based exposure with unparalleled detail. Here we describe the model methodology. We use the metropolitan region of Phoenix, Arizona, USA to carry out a case study using Icarus.

Joan McGregor is a professor of philosophy in the School of Historical, Philosophical, and Religious Studies at ASU as well as an adjunct professor in the Sandra Day O’Connor College of Law. Approaching the issue of food sustainability through ethics, Joan offers a unique perspective on the idea of food systems. She believes by looking at the ethics of food systems people move beyond seeing sustainability as a scientific problem and address the problem as a manageable part of their everyday lives. In the development of Dinner 2040 with her team Joan sought to make the food systems about the people directly affected by the food crisis. Though she believes there is no overnight solution, she does believe that the forum that Dinner 2040 provides begins the process of thinking about local solutions.

Cindy Gentry is the Food Systems coordinator at the Maricopa County Department of Public Health. Growing up in a working class family, Cindy became aware of the food access crisis in the U.S. at a young age. Since then she has been involved in several social justice organizations to combat this issue including the Food Bank Association and the Community Food Security Coalition. She was also one of the first activists working to bring farmers’ markets to Maricopa County. Cindy’s work has focused on bringing an accessible local food economy to those in need. She continues to focus on the education of the public and programs to help the less fortunate have access to fresh local food.

Interview with J.D. Hill, co-founder of Recycled City

J.D. Hill is the co-founder of Recycled City LLC a business devoted to building a revolving relationship within the local food economy by limiting food waste. His business provides materials to create compost out of waste materials for residential customers and business. J.D.’s goals with his business are to inspire the community to participate in their local food economy, promote activism, focus on building farm land, and encourage a green economy in the Valley area. He is an ASU grad with degrees from the School of Sustainability and the W.P. Carey School of Business. This knowledge has shaped his view toward the ability of green businesses to flourish in the Phoenix area.

Interview with Natalie Morris, Adjunct Faculty - Sustainable Food Systems Program, Mesa Community College


Natalie Morris is an instructor at Mesa Community College School of Sustainability and a promoter of Local First Arizona. She uses her deep love of food that she developed at a young age to develop a career around food systems. Experiences both in culinary school and her travels abroad helped Natalie to develop a passion for local food systems and education. One of her biggest projects to achieve this goal was Truck Farm Arizona, a mobile farm focused on the experience, education, and message of hope to under privileged youth. This project helped to show the next generation the importance and possibilities of growing local produce. Natalie also took her positive attitude to help Good Food Finder, now merging with Local First Arizona, to help connect the community, farmers, and local businesses to create a local food economy that promotes sustainability. Natalie’s focus goes beyond the classroom as she seeks to educate her community, focus on sustainability on a day to day level, and actively seek to grow Arizona’s local food systems.