GOS Economic Model (GEM) Overview. Uses the same underlying simulation software (Stella) which was used in developing TNM Economic Model (NB-Sim) Provides a comprehensive tool for deriving estimates of GOS Net Benefits (Total Benefits - Total Costs) - for each Alternative
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Assumption: Having a large Investment in Geospatial Technology (as a % of an Agency’s IT Infrastructure) means high degree of Spatial Intelligence)
(Uses Spatial Intelligence)
Distribution for Tier 3
(On-going Use of Spatial Data)
Overall Readiness GAP
Smaller Readiness Gap
(inability to use spatial data)
Top Down Approach forAssessing Spatial Readiness
**Current Readiness - recommend that a small inter-agency team assess and rate each Tier 2 and Tier 3 agency based upon certain GOS specified criteria (i.e., Readiness Matrix)
Representative Readiness Assessment Criteria
Assessment and Scoring of individual Agencies/Depts.
Representative Spatial Readiness Index (varies by Agency and by Tier)
Representative GAP Size (varies by Agency and by Tier)
Note: Spatial Readiness Assessment should also distinguish “Early Adopters” from “Late Adopters” (as defined in the Urban Logic Value Proposition Report)
Impact on Federal Sector Primarily Through Improvements in Efficiency (Spatial Readiness) and Operations (Spatial Intelligence)
GEM Benefit Estimation
Impact on State and Local Governments Through increasing GIS Application Usage (and data access)
Provides Indirect measurement only -
below the Federal LevelGEM Comparison to TNM Economic Model (NB-SIM)
GOS Economic Model
Boundary where benefits
should accrue to both
TNM Economic Model
State and Local Governments
The Stella Modeling Tool provides a visual representation of mathematical concepts, formulas, and equations. These equations are used to run the economic simulation that has been developed for GOS. The GEM Visual Representation is a system diagram which shows stocks (where things accumulate, such as benefits and costs). There are also flows into and out of the stocks, which are represented by lines (or pipes). There are also varying rates of flow (or change) through these pipes - such as rates for increasing benefits over time.
This portion of GEM shows how budget information is represented in the model. This information is later tied to the Federal agencies BRM sub-functions.
This portion of GEM shows the various components of Spatial Readiness and how the Model handles the relationship between increasing Spatial Readiness (and Spatial Intelligence) as the Gap Size is decreased.
This portion of GEM shows the key Benefit components that are based upon improvements in federal agency efficiency and coordination, through GOS. It also provides for increasing benefits based upon improvements to agencies BRM sub-function.
This portion of GEM shows the various GOS Cost components and how costs are accumulated on an annual basis. The accumulation of costs leads to increase in GOS Percent Completion. This increased completion is, in turn, tied to the rate at which benefits accumulate on an annual basis.
Federal Agency Spatial/Non-Spatial Budgets
GOS Benefit Estimation
Spatial Readiness Estimation
Life Cycle Cost Input