goseconomicmodel(gem)overview-資料下載頁
2024-09-29 21:07本頁面
【導讀】GOSEconomicModel(GEM)Overview. Benefits(TotalBenefits-TotalCosts)-foreachAlternative. Proposition:. Process. GOS. theGOSLCCAnalysis. GOSMilestones-SubmissionoftheBY’06Exhibit300. Intelligence. resources. SpatialReadiness. Preparation. setofcriteria. agency. ReadinessMatrix). TopDownApproachfor. Sp. ati. al. Re. ad. ine. ss. Inadequate. (inabilitytouse. spatialdata). Low. (Requiredfor. GOSCompliance). High. (UsesSpatial. Intelligence). Tier1Tier2Tier3. Essential. (On-goingUseof. SpatialData). AgencyX. Agency’sITInfrastructure)meanshigh
【正文】 irectly to States and local governments through their partnership with GOS and improvements in discovery and better access to spatial data ?Apportionment of GOS Benefit Estimates to State and local levels would require a special study (., a tailored run of GEM for a subset of agencies and BRM subfunctions) Comparison to TNM Economic Model Cont’d ?TNM Economic Model was designed to do the following: simulate the number of users (across all US counties) estimate the extent of [gis] application innovation and diffusion estimate the changes in benefits (NB) of implementing spatial data applications ?TNM Economic Model sought to measure the impact (NB) of there being a National Map versus an environment in which there is no National Map. Comparison to TNM Economic Model Cont’d ?TNM Economic Model Benefits: Value of TNM Data in helping to reduce the costs to generate, populate, or operate spatial databases Value of improving the oute of projects because of better information ?TNM Economic Model defined 3 Tiers of Applications: Tier 1 (5% of all counties) represents sophisticated GIS applications (., plex geospatial statistics and formal optimization modeling) Tier 2 (30% of al counties) represents applications which use digital spatial data to perform functions such as plex route planning or locational analysis Tier 3 (65% of all counties) represent basic applications, including paper mapping and simple overlay analysis in a GIS The GEM Visual Representation (A Brief Synopsis) 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. GEM Model Visual Components – Federal Budget Input This portion of GEM shows how budget information is represented in the model. This information is later tied to the Federal agencies BRM subfunctions. GEM Model Visual Components Spatial Readiness This portion of GEM shows the various ponents of Spatial Readiness and how the Model handles the relationship between increasing Spatial Readiness (and Spatial Intelligence) as the Gap Size is decreased. GEM Model Visual Components Benefit Estimation This portion of GEM shows the key Benefit ponents 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 subfunction. GEM Model Visual Components Cost Elements This portion of GEM shows the various GOS Cost ponents and how costs are accumulated on an annual basis. The accumulation of costs leads to increase in GOS Percent Completion. This increased pletion is, in turn, tied to the rate at which benefits accumulate on an annual basis. GEM The Complete Picture Spatial Readiness Estimation Life Cycle Cost Input Federal Agency Spatial/NonSpatial Budgets GOS Benefit Estimation
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