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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

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

Archaeology in the Classroom: Mediterranean Landscape Dynamics Educational Outreach

ContributorsSwantek, Laura Anne (Author)
Created2010

Neolithic Survivor: The Mediterranean Landscape Dynamics Project in the Classroom

ContributorsMcGraw, Maggie (Author) / Swantek, Laura Anne (Author)
Created2009
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Footprints on the Sands of Time: Retracing Harvey Butchart's Exploration of the Grand Canyon through His Annotated Matthes-Evans Maps – Video Recording

Description
John Harvey Butchart was a mathematics professor at Northern Arizona University from 1945 to 1973. From 1945 to 1987, he spent considerable time in the Grand Canyon, hiking established trails, exploring obscure routes, and discovering new routes. In all, Dr. Butchart spent over 1,000 days in the Grand Canyon and…

John Harvey Butchart was a mathematics professor at Northern Arizona University from 1945 to 1973. From 1945 to 1987, he spent considerable time in the Grand Canyon, hiking established trails, exploring obscure routes, and discovering new routes. In all, Dr. Butchart spent over 1,000 days in the Grand Canyon and traveled over 12,000 miles in the Canyon. Dr. Butchart kept journals on his explorations and complemented those notes with a heavily annotated copy of the 1927 Francois Matthes and Richard Evans East Half, West Half topographic maps of the Grand Canyon. Embedded in Butchart’s annotated Matthes-Evans maps are compelling stories of adventure, discovery, triumph, and heartbreak. This presentation will highlight selections of those stories and the impact this map has had on subsequent hiking exploration in the Canyon.
ContributorsRunge, Peter (Author, Speaker) / ASU Marketing Hub (Videographer)
Created2019-02-28
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Creation of the Matthes-Evans Topographic Map of the Grand Canyon – Video Recording

Description
Creation of the Matthes-Evans United States Geological Survey topographic map of the Grand Canyon was a herculean effort. It was the most impressive mapping activity to ever take place at the Grand Canyon, considering the surveying tools that were available at the time. Field work on the Matthes-Evans map began…

Creation of the Matthes-Evans United States Geological Survey topographic map of the Grand Canyon was a herculean effort. It was the most impressive mapping activity to ever take place at the Grand Canyon, considering the surveying tools that were available at the time. Field work on the Matthes-Evans map began in 1902, but publication of the map did not occur until 1927. This was a 25 year effort, facing extremely challenging field conditions. This presentation will describe the surveying methods and tools used, and the field work required to prepare the Matthes-Evans Map. Extremely challenging terrain and climate made field work quite difficult. Matthes and others produced firsthand accounts that provide a historical record of the mapmaking effort and some of the trials and tribulations encountered by the surveyors. These sources, plus the author’s onsite visits to triangulation stations and benchmarks provide the basis for the story of the map’s creation.
ContributorsUpchurch, Jonathan (Author, Speaker) / ASU Marketing Hub (Videographer)
Created2019-02-28
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Legislating the Boundaries: Redrawing the Map in 1925 – Video Recording

Description
It is a truism that maps cannot exist without boundaries, whether those boundaries are the borders of the map itself or the geographic coordinates circumscribing the limits of the physical space being mapped. Grand Canyon National Park, like all national parks, has written and legislated descriptions that form the basis for…

It is a truism that maps cannot exist without boundaries, whether those boundaries are the borders of the map itself or the geographic coordinates circumscribing the limits of the physical space being mapped. Grand Canyon National Park, like all national parks, has written and legislated descriptions that form the basis for mapping the evolving nature of the park. The year 1925 saw the first significant re-writing of the legal boundaries of Grand Canyon National Park since its legislative creation in 1919.  This presentation will discuss the “sausage-making” involved in re-writing the borders of Grand Canyon National Park.
ContributorsOetting, Ed (Author, Speaker) / ASU Marketing Hub (Videographer)
Created2019-02-28
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Mapping Grand Canyon National Park – Video Recording

Description
Four recently published maps of Grand Canyon National Park that owe their design inspiration to renowned mapmakers of the twentieth century, a relationship that I will explore. The first map, the “South Rim Pocket Map,” targets the majority of visitors who go only to the South Rim and stay there…

Four recently published maps of Grand Canyon National Park that owe their design inspiration to renowned mapmakers of the twentieth century, a relationship that I will explore. The first map, the “South Rim Pocket Map,” targets the majority of visitors who go only to the South Rim and stay there for four hours or less. I based this map on the 1972 “New York Subway Map” by Massimo Vignelli, which distorts geography in order to squeeze information into tight geographic areas. Out of necessity I did likewise for the “South Rim Pocket Map,” which had a print run of three million copies last year. My next map, “Hiking Below the Rims,” draws inspiration from Brad Washburn’s “Heart of the Grand Canyon” published in 1978 by National Geographic. I used a digital technique called texture shading to mimic the Swiss-produced rock hachuring found on Washburn’s map. Up next in my talk is a map of the entire canyon made for the official park brochure. It features natural colors similar to those developed in the 1950s by USGS cartographer, Hal Shelton. I will wrap things up with a panorama of the Grand Canyon that borrows a clever idea from late Austrian panoramist, Heinrich Berann. I warped a digital elevation model on a convex arc to create a hybrid 3D scene featuring a conventional map in the foreground and a panorama in the background. You can decide if it works.
ContributorsPatterson, Tom (Author, Speaker) / ASU Marketing Hub (Videographer)
Created2019-02-28
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Mapping Grand Canyon (Conference Introduction) – Video Recording

Description
Prior to the 1850s, no large-scale maps of the Grand Canyon existed. Maps covering the region were predominantly small-scale products, crudely generalizing vast swathes of territory. Most maps relegated the location of the Grand Canyon itself to a conspicuous “blank space”. In the mid-19th century era of US territorial expansion,…

Prior to the 1850s, no large-scale maps of the Grand Canyon existed. Maps covering the region were predominantly small-scale products, crudely generalizing vast swathes of territory. Most maps relegated the location of the Grand Canyon itself to a conspicuous “blank space”. In the mid-19th century era of US territorial expansion, fueled by the ideological imperatives of Manifest Destiny, such glaring omissions of cartographic detail demanded a corrective filling-in. A map drawn by the pioneering cartographer Frederick Wilhelm von Egloffstein as part of the 1857-1858 Ives survey marked the first successful effort to map the Colorado River, and, by extension, its Grand Canyon, in any meaningful detail. A decade later, in the summer of 1869, a one-armed Civil War veteran named John Wesley Powell famously led a group of nine men to explore and conduct a more thorough topographic survey of the still mysterious lands abutting the river. In the decades following the Ives and Powell surveys, the motivations for mapping the Grand Canyon have changed, as have the technologies, the techniques, and the very maps themselves. From maps of increasing topographic accuracy, to fancifully illustrated pictorial maps, to National Park Service maps, to geologic maps, to interactive 3D web maps, and everything in between, the geography of the Grand Canyon region has been the subject of a multitude of diverse manifestations of cartographic representation.
ContributorsToro, Matthew (Author, Speaker) / ASU Marketing Hub (Videographer)
Created2019-02-28
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Conference Program

DescriptionOfficial program of the Mapping Grand Canyon Conference. Document was designed and optimized for digital dissemination and mobile device (smartphone, tablet) viewing and interactive browsing. Document was deliberately not printed in paper format with the intent of minimizing the event's ecological footprint through a reduction of paper and ink waste.
ContributorsWatson, Amy Carolyn (Compiler, Designer) / Toro, Matthew (Compiler, Cartographer) / Avila, Theresa (Contributor) / Field, Kenneth (Contributor) / Fry, Michael (Contributor) / Griffin, Dori (Contributor) / Kaplinski, Matt (Contributor) / Karlstrom, Karl (Contributor) / Manone, Mark (Contributor) / Oetting, Ed (Contributor) / Patterson, Tom (Contributor) / Quartaroli, Richard David (Contributor) / Runge, Peter (Contributor) / Semken, Steve (Contributor) / Smilovsky, Nikolas (Contributor) / Smith, Stephanie (Contributor) / Spindler, Rob (Contributor) / Trapido-Lurie, Barbara (Contributor) / Upchurch, Jonathan (Contributor) / Deitrick, Stephanie (Contributor) / Lemar, Shea (Contributor) / Messinger, Ellen Murray (Contributor) / Sherwood, Jill (Contributor) / Wilhelm, Karina (Contributor)
Created2019-02