Comments

36 comments

  • Avatar
    eyosiyas
    thank you for your swift reply...so does this mean that the trade flow data is impacted by the scenario?? What if we have no scenario and we want to just estimate the total flow of goods and services (imports and exports) between two areas??
  • Avatar
    DougO
    The data in the noted report is the historical estimated flows for 2008 (base year data).
  • Avatar
    eyosiyas
    thank you, a lotttttttttttt !!!!!! I might have to bagg u more next week though !!!
  • Avatar
    eyosiyas
    is it also possible to get the inter-regional multipliers using MRIO model in the new version??
  • Avatar
    DougO
    No, the multiplier reports only show the single region multipliers - the MRIO impacts are calculated via iteration through the linked models. You could calculate the multipliers after the impact: Multiplier = Desired impacts to be included/Direct effect on initiating model.
  • Avatar
    eyosiyas
    1/in an MRIO, is it possible to get the Leontief inverse matrix of the multi-regional transactions table, either in access or? 2/and in MRIO, is there any way that we can know the value of imports and exports of each of the two regions to the rest of the world? thank you
  • Avatar
    DougO
    1) Sorry, no - they are calculated iteratively through the trade flow data and the single region I-O's for each of the regions. 2) To calculate the exports to the rest of the world, combine the two regions into a single model and look at the domestic + foreign imports and exports. Unlike Version two where the econometrics calculated different values for different situations, version three's trade flows are consistent combining regions or aggregating sectors.
  • Avatar
    eyosiyas
    Thank you, How about the multi-regioanl transactions table? Is it possible to access that?
  • Avatar
    DougO
    If you mean the trade flows that form the basis of the transactions, see this thread: http://implan.com/v4/index.php?option=com_kunena&func=view&catid=80&id=7615&Itemid=35#7622
  • Avatar
    Sarah Robinson
    I just built an impact model that connects two regions through an MRIO. What I would like to do is now export the trade flows and multipliers for the two areas to see how the regions impact one another. You mention in a previous post the "ImpactCommodityImportBase" in the access database; how do I access this?
  • Avatar
    DougO
    It is a table in the Access database that contains your region. It is on the appliance:\implan user data\models directory and the name of the file is xxxxx.impdb where xxxxx is the name you gave the region.
  • Avatar
    eyosiyas
    How can I access the Leontief inverse matrix of a single region IO model? Is it possible to get the transactions table ( A ) as well?
  • Avatar
    DougO
    Under Explore>Reports (tab)>Export>Structural Matrices Elements and choose your poison.
  • Avatar
    DougO
    Whenever you create a model and save to the default directory, the software creates an Access database which contains all the activity for that model. It is found in the appliance:/implan user data/models/xxxx.impdb where xxxx is the name you gave the model.
  • Avatar
    eyosiyas
    1.When shocking an MRIO using ''household income change'', the total impacts in both regions is only reflected as ''induced effect''. The direct and indirect impacts in both regions are 0. Is this because household income spending affects induced impact only or? 2. What is the difference between the values in the ''value added' section and 'output' in the 'top ten industries affected by a shock'' sorted by total value added? Thank you
  • Avatar
    DougO
    1. Theoretically spending by households/labor income is an induced effect that resulted from some industry activity. If you wish to have household spending as direct/indirect and induced, you would need to import household spending as an institution spending pattern (under Activity Options>Import). These imported institution spending patterns are not run through the SAM so you would have to remove taxes and saving externally to IMPLAN before setting the activity level - that is, the entire activity level will be run through the multipliers as disposable income. 2. Total Output = Value Added plus Intermediate Outlay. They are highly correlated so they may not sort any differently, but occasionally they will.
  • Avatar
    eyosiyas
    Is it possible to aggregate the household income categories in IMPLAN? For example, can we aggregate the current 10-15K,and 15-25K categories into 10-25k?
  • Avatar
    DougO
    Not directly through the software. If you are trying to do impact analysis, you can combine the study area data for the categories in and re-import into the software as an impact vector. ( see http://implan.com/V4/index.php?option=com_content&view=article&id=573:573&catid=237:KB20 ) Or more simply, divide the direct effect (activity level) between the 2 categories.
  • Avatar
    eyosiyas
    we are currently working the impact of direct payment programs made in region A on region A and the ripple effect on region b. Do you think that we should shock the MRIO with the gross payments or net payments i.e gross payment minus taxes, social security and medicare? Does the production function in IMPLAN automatically calculate the deductions(social security, medicare payments)? Thank you for your help
  • Avatar
    DougO
    Depends on how you enter it. If you enter as Employee Compensation (Activity Type: Labor Income) the software will remove social insurance for you before passing money to local households. If you enter as Household (Activity Type: Household Income Change) the software will remove income taxes and savings (and not social insurance). If you use Activity Options>Import>Institution Spending Patterns and choose a household, you will need to remove all taxes and savings yourself as each dollar will be treated as disposable income (all will be spent to buy goods and services).
  • Avatar
    eyosiyas
    by social insurance, u mean...social security and medicare payments right??
  • Avatar
    DougO
    yes, for Federal gov. For state and local gov it is mostly state government employee retirement system.
  • Avatar
    eyosiyas
    How does v3 IMPLAN calculates trade with the rest of the US and the world when we are working on MRIOs? And how is it different with the Version 2 method of calculation?
  • Avatar
    DougO
    Version 2 used econometrics based on a 51 state for 125 commodities MRIO - an MRIO initially created by Karen Pohlenski using a gravity model in 1977. For details see this paper: http://implan.com/V4/index.php?option=com_docman&task=doc_download&gid=186&Itemid=7 Version 3 uses a doubly constrained gravity model to create all trade flows for 3142 counties for 430 commodities. The observed values from this model are used as the trade flows in version 3. For details see this paper: http://implan.com/V4/index.php?option=com_docman&task=doc_download&gid=138&Itemid=7 Note: we are in the process of creating a new set of econometric equation based on the current trade flows. We hope to be able to apply the new equations for zip code models and for specific commodities whose supplies are changed by user edits of the study area data.
  • Avatar
    eyosiyas
    which agency provides the Oak Ridge National Labs (ORNL) county to county distance by mode of transportation, and the Commodity Flows Survey (CFS) ton-miles data by commodity that is used for the gravity model?
  • Avatar
    DougO
    The group at ORNL that provided the impedences and county to county distances is Center for Transportation Analysis. Census does the CFS (although I am thinking that ORNL may do the survey for Census).
  • Avatar
    eyosiyas
    hi again, I wanted to show my friends a demo video that you posed on your website that demonstrates the use of MRIOs on version 3. I tried to see it again yesterday but I couldnt find it online. Is it possible that you might be able to email it to me on eyosiyas.tegegne@okstate.edu or choyeyeye@gmail.com? Thanks
  • Avatar
    eyosiyas
    I m currently working on the value of domestic and international trade. On "industry by industry accounts explorer" , "II input output accounts", the NAICS code 81 is not available to see. Is there any specific reason for this?
  • Avatar
    DougO
    Even though it doesn't say so in the desciption, it is included with 61-72. Am not sure why it isn't separate. I'll check with Scott.

Please sign in to leave a comment.