Trade flows using texas 254 counties data sets
Download
1 / 19

TRADE FLOWS USING TEXAS 254 COUNTIES DATA SETS - PowerPoint PPT Presentation


  • 58 Views
  • Uploaded on

TRADE FLOWS USING TEXAS 254 COUNTIES DATA SETS. Hyunkyung Jung GIS Term Project November 29 th , 2001. INTRODUCTIONS. Modeling long-run transportation demands has been developed for Effect of the interactions between activities in regional economies

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'TRADE FLOWS USING TEXAS 254 COUNTIES DATA SETS' - sally


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Trade flows using texas 254 counties data sets

TRADE FLOWS USING TEXAS 254 COUNTIES DATA SETS

Hyunkyung Jung

GIS Term Project

November 29th, 2001


Introductions
INTRODUCTIONS

  • Modeling long-run transportation demands

    has been developed for

    • Effect of the interactions between activities in regional economies

    • Daily Movement of Persons and Goods which can be estimated by interaction between transportation and land use


Introductions1

Trade Flow System

INTRODUCTIONS

  • A conceptual examination

    • Land Use – Transportation Interaction Models

    • Application of random-utility-based mutli-zonal input-output (RUBMZIO) model with TEXAS counties data set


Data collections

Texas Highways & Railroads

Output dataset from Yeon-Joo Min

(UT Transportation Graduate Student)

DATA COLLECTIONS

http://www.ar.utexas.edu/planning/data/index.html#texas


Data assembly
DATA ASSEMBLY

  • Simulation data: 254 zones, 31 export zones and 14 sectors

  • Technical coefficients for each of the 5 Districts j ( )

  • Travel costs ( )

  • Foreign export demands for export zone ( )

  • Origin Choice parameters ( )


Rubmzio iterations

1: Calculate disutility

, and are initially given

2: Calculate trade of export flows

and are initially given and are an export zone

3: Calculate trade of internal flow

4: Calculate average input costs

RUBMZIO ITERATIONS




Population
POPULATION PRODUCTS


Texas highway railways and 31 export zones

FTW & DAL PRODUCTS

HOUSTON

SAN ANTONIO

TEXAS HIGHWAY & RAILWAYS AND 31 EXPORT ZONES


Empirical results
EMPIRICAL RESULTS PRODUCTS

  • The amount of trade ( ) for each sector is highly affected by the transport costs/accessibility

  • Trade volumes in this example highly favor the closest zones


Trade flows
TRADE FLOWS PRODUCTS


General trend of trade flows agriculture forestry and fisheries from austin

AMA PRODUCTS

CHS

LBB

WFS

PAR

DAL

ATL

ABL

FTW

TYL

BWD

WAC

ELP

ODA

SJT

LFK

BRY

AUS

BMT

HOU

SAT

YKM

LRD

CRP

PHR

GENERAL TREND of TRADE FLOWS-Agriculture, Forestry, and Fisheries from Austin-


Input and parameter effects
INPUT AND PARAMETER EFFECTS PRODUCTS

  • Technical Coefficient

    • Total production costs

    • Total consumption amounts

  • Foreign Export Demand

    • Overall economy’s demands

    • Trade flows


Input and parameter effects1
INPUT AND PARAMETER EFFECTS PRODUCTS

  • Transporting Cost (for interzone and export zone)

    • The amount of trade for each sector

  • Scale Parameter

    • The distribution pattern of trade


Scale parameter decrease effect agriculture forestry and fisheries from austin

AMA PRODUCTS

CHS

LBB

WFS

PAR

DAL

ATL

ABL

FTW

TYL

BWD

WAC

ELP

ODA

SJT

LFK

BRY

AUS

BMT

HOU

SAT

YKM

LRD

CRP

PHR

SCALE PARAMETER DECREASE EFFECT-Agriculture, Forestry, and Fisheries from Austin-


Conclusions
CONCLUSIONS PRODUCTS

  • Improvements to a zone’s technology significantly enhanced its trade and production levels

  • Travel cost increases limited trade interactions, while scale-parameter reductions increased interactions.

  • Increases in Export demands fed back through all levels of the trading system, spurring demand and trade flow increases everywhere.


Conclusions1
CONCLUSIONS PRODUCTS

  • RUBMZIO model

    • A valuable set of relationships to predict trade flows, location choices/production levels, and market prices

    • Assessing regional transportation, land use, technology, and trade policies


Future study
FUTURE STUDY PRODUCTS

  • Represent trade-offs between supply and demand and between transport costs and land values. 

  • Investigates the sensitivities of trade flows and other model outputs to various inputs and parameters

  • Combine the mode choice parameter and origin choice parameter and show the effect of each choice on trade flow

  • Compare a variety of related land-use/transport interaction models