Bryan Galarza

Bryan Galarza

Postdoctoral Researcher at the University of Antwerp. Operations Research Specialist.

Sitemap

A list of all the posts and pages found on the site. For you robots out there, there is an XML version available for digesting as well.

Pages

Posts

Future Blog Post

less than 1 minute read

Published:

This post will show up by default. To disable scheduling of future posts, edit config.yml and set future: false.

Blog Post number 4

less than 1 minute read

Published:

This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.

Blog Post number 3

less than 1 minute read

Published:

This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.

Blog Post number 2

less than 1 minute read

Published:

This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.

Blog Post number 1

less than 1 minute read

Published:

This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.

portfolio

An integrated inventory and routing problem

Published:

A home-care distributor had to decide whether to keep delivering in-house or outsource, and from which of two depots. A periodic inventory and routing model over a 12-week cycle, with service level verified by Monte Carlo.

Method and time study at Van Hool

Published:

A complete method and time study of a workstation at Van Hool: critically studying how the work is actually done, measuring it by direct time study and work sampling, and designing an optimized standard work method with a defensible standard time.

Supply chain audit at Milliken Europe

Published:

An audit of Milliken Europe’s chemical division in Ghent against the seven principles of supply chain management, with a chapter on variability and three concrete changes to propose.

Designing a system for parts picking and line supply

Published:

Designing a greenfield plant for a manufacturer of 21,000 electric golf carts a year: takt time and line balancing for a high-customization line, a kitting supermarket for parts supply, the facility layout, and a discrete-event simulation to check the whole thing holds together.

Packaging optimization at Atlas Copco

Published:

Documenting the existing packaging policy for Atlas Copco’s AIRnet and piping components, then optimizing it with a mixed-integer model and metaheuristics, with the aim of halving annual distribution and storage costs.

Optimizing police patrol routes for unpredictability

Published:

Planning daily routes for the mobile unit of the Belgian police, where the objective is not just to cover the beat but to keep the route unpredictable, so that patterns cannot be learned and exploited.

Assigning students to schools under capacity and priority rules

Published:

A school choice assignment problem for a real district: place 8,500 students across 86 schools within capacity while honouring ranked preferences, a protected share of places for priority students, and the rule that children with relatives at a school get preference there.

School bus routing for students with special needs

Published:

A capacitated school bus routing problem with accessibility constraints, solved on real De Lijn data for the municipalities of Diest and Gavere. A good illustration of how a hard routing problem looks once mobility constraints are added.

A unifying framework for demand-responsive public bus systems

Published:

A systematic review that classifies every demand-responsive public bus system in the literature by its degree of responsiveness, and shows how few semi-flexible many-to-one systems have been studied in the real-time setting.

AI-powered dispatching for non-emergency medical transport

Published:

A VLAIO-funded development project delivering an automatic dispatching module for non-emergency medical transport, which builds and continuously re-optimises the daily trip schedule and crew assignments, with human dispatchers always in the loop.

publications

A large neighborhood search algorithm to optimize a demand-responsive feeder service

Published in Transportation Research Part C: Emerging Technologies, 2021

This paper proposes a large neighborhood search algorithm to optimize a demand-responsive feeder service, balancing efficiency and passenger convenience.

Recommended citation: Galarza Montenegro, et al. (2021). "A large neighborhood search algorithm to optimize a demand-responsive feeder service." Transportation Research Part C: Emerging Technologies, 127, 103102. https://doi.org/10.1016/j.trc.2021.103102
Download Paper

A survey on demand-responsive public bus systems

Published in Transportation Research Part C: Emerging Technologies, 2022

This paper presents a comprehensive survey on demand-responsive public bus systems, reviewing models, algorithms, and practical applications. This was a joint work with other researchers as well.

Recommended citation: Vansteenwegen, et al. (2022). "A survey on demand-responsive public bus systems." Transportation Research Part C: Emerging Technologies, 137, 103573. https://doi.org/10.1016/j.trc.2022.103573
Download Paper

talks

KU Leuven CIB Internal Seminars

Published:

Invited to present at the KU Leuven CIB (Centre for Industrial Management / Traffic & Infrastructure) internal research seminar on multiple occasions (2019, 2021, and 2022). The talk focused on semi-flexible bus services, discussing models and optimization approaches for demand-responsive transit systems with both mandatory and optional stops.

CORE UC Louvain Seminar

Published:

I was invited to give a seminar at the CORE research group in UC Louvain. I talked about an applied research project where I was the lead on.

teaching

Teaching experience 1

Undergraduate course, University 1, Department, 2014

This is a description of a teaching experience. You can use markdown like any other post.

Teaching experience 2

Workshop, University 1, Department, 2015

This is a description of a teaching experience. You can use markdown like any other post.