Blog Archives

Shortest Path Computation: A Comparative Analysis

Current research work into establishing a performance efficiency hierarchy between Java, C++ and ArcView is described and experimentation is performed in order to statistically compare shortest path query execution time, response time and implementation issues.

Posted in my PUBLIC PRESENCE
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MFworks Tutorial

This tutorial, developed in 2002, is a showcase on network analysis in MFworks, with step by step instructions and a summary of the theory behind it.

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How to make a straight line square

Traditionally, network analysis, path finding and route planning have been the domain of graph theory and vector GIS, which is where most algorithms find their application. Contrary to such common wisdom, the research of this thesis for the Msc in GIS explores the topic of network analysis in raster GIS, using MFworks as example software.

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Fastest path problems in dynamic transportation networks

This research essay and literature review investigates some of the gateways to path finding in static and dynamic networks that are listed in present research literature. A selected set of different approaches are highlighted and set in a broader context, illustrating the various aspects of path finding in static and dynamic networks.

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Network analysis – raster versus vector – A comparison

The key to producing successful network models is in understanding the relationship between the characteristics of physical network systems and the representation of those characteristics by the elements of the network model.

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ARTICLES and PAPERS
Maritime Vulnerability
Maritime transport is a vital backbone of today's global and complex supply chains. Unfortunately, t[...]
Interpreting Resiliency
In yesterday's post on Freight Transportations Systems Resilience I mentioned Kelly Pitera and her M[...]
BOOKS and BOOK CHAPTERS
Book Review: How Nature Works
How Nature works is a fascinating book. I first heard of the late Per Bak and his sandpile theories [...]
Book Review: Supply Chain Risk Management
This excellent book by Donald Waters, Supply Chain Risk Management: Vulnerability and Resilience in [...]
REPORTS and WHITEPAPERS
Zycus and the Supply Risk Explosion
"Ten or fifteen years ago, you could not convince most procurement and supply-chain professionals to[...]
Highway Vulnerability and Criticality Assessment
Transportation vulnerability and resilience have been the focus of this blog for the past two days, [...]
from HERE and THERE
Cost-Benefit Analysis – an essay about valuation problems
This paper introduces vulnerability as an important parameter for decision-support in cost-benefit a[...]
Oslo airport shut-down...lessons learned?
Two days ago, Norway's major airport, Oslo Gardermoen (OSL) practically shut down due to weather con[...]