Repository for Gravity Field Modeling and Recovery using Machine Learning Methods
Streamline transportation planning with the Gravity Model's Python implementation. This repository offers a comprehensive README, user-friendly Python script, and practical examples, making it straightforward for users to implement and adapt the model to their specific urban planning scenarios.
A performance-effective program for gravity field calculation for layered ellipsoidal density model.
The implementation of the Small Bodies Geophysical Analysis Tool (SBGAT)
Stochastic model of invasive zebra/quagga mussel spread as facilitated by boat traffic, built for QGIS
This project implements a gravity accelerator using Verilog and Vivado. It simulates the physics of gravitational acceleration, calculating velocity and position over time within a digital circuit environment. The project includes testbenches and waveform analysis to ensure accurate simulation and performance.
This script estimates a gravity model of international trade based on a setting file.
A package for downloading data from the UN Comtrade Database
Data and code for the paper 'Understanding China’s urban system evolution from web search index data'
A Gravity Model Analysis of High Speed Rail (HSR) Routes in North America
Soukhov A, Páez A, Higgins CD, Mohamed M (2023) Introducing spatial availability, a singly-constrained measure of competitive accessibility. PLOS ONE 18(1): e0278468. https://doi.org/10.1371/journal.pone.0278468
R & STATA code for (1) PPML gravity model (IV generation), (2) panel fixed effect regression (1st stage regression), and (3) local projection method
Estimating value added adjusted gravity models to explain the relationship between preferential trade agreements and global value chain participation. Robustness of models are checked using a specification curve analysis.
A QGIS plugin for spatial analysis
Report for the National Board of Trade Sweden evaluating the impact of the EU-Ukraine free trade agreement on trade flows using a gravity model.
Templates and data for teaching a workshop on spatial interaction modelling using `R`.
Masters Final Year Project - Analysing Transaction Flow in Kiva.org- UCL 2017/18
Discrete Unification Theory
Scientific publication analyzing the impact of business travel costs on trade using Soviet airspace liberalization as a natural experiment.
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