M.Sc. Isabel Wiemer

 

CV:

Since 2021

Research Assistant at the Chair of General Business Administration and Production Management, University of Duisburg-Essen

2019 - 2021

Master study Management at the Ruhr-University Bochum

Thesis topic: Optimized service locations with consideration of demand uncertainty

2017 - 2018

Semester abroad at the Universidad de Oviedo

2015 - 2019

Bachelor studies in Management and Economics at the Ruhr-University Bochum

Topic of the final thesis: Optimal configuration of scheduling systems on a tactical level

Research Stay

BCAM: Basque Center for Applied Mathematics, Combinatorial Optimization, 29.01.-23.02.2024, Bilbao, Biskaia, Spain

Publications

    2025

    Journal articles

  • Zacharopoulos, Leon; Wiemer, Isabel; Sprecher, Marten; Geldermann, Jutta
    Carbon Footprint of Alloyed Crude Steel in Germany : Focusing the Influence of Different Alloying Recipes
    In: Journal of Sustainable Metallurgy, Vol. 11, 2025, Nr. 3, pp. 2393 – 2410
    DOI (Open Access)

    • Reports

  • Wiemer, Isabel; Geldermann, Jutta; Walther, Grit
    Operations Research (OR) for Sustainability: Energy, Mobility, Industry : Abschlussbericht
    Duisburg, Essen, 2025
    DOI, Online Full Text (Open Access)

    • 2024

    Book chapters / Proceedings papers

  • Wiemer, Isabel; Geldermann, Jutta
    Analyse der geografischen Herausforderungen der Stadt Duisburg für die Standortplanung des Rettungsdienstes
    In: Next Chapter in Mobility: Technische und betriebswirtschaftliche Aspekte / 15. Wissenschaftsforum Mobilität, 11.05.2023, Duisburg / Proff, Heike (Eds.). Wiesbaden: Springer Gabler, 2024, pp. 117 – 132
    DOI

    • 2023

    Journal articles

  • Geldermann, Jutta; Zacharopoulos, Leon; Wiemer, Isabel; Sprecher, Marten
    Erstellung eines Carbon Footprint für Produkte für die Stahlherstellung in Deutschland
    In: Der Betrieb, 2023, Nr. 39, pp. 2257 – 2266
    Online Full Text
  • Grot, Matthias; Kugai, Simon; Degen, Lukas; Wiemer, Isabel; Werners, Brigitte; Weltermann, Birgitta M.
    Small Changes in Patient Arrival and Consultation Times Have Large Effects on Patients’ Waiting Times : Simulation Analyses for Primary Care
    In: International Journal of Environmental Research and Public Health = IJERPH, Vol. 20, 2023, Nr. 3, 1767
    DOI (Open Access)

Presentations


Wiemer, I.; Geldermann, J. (2026), (Vortrag):
Ensuring Fair Access in Emergency Medical Services: A Bi Objective Covering Location Model, German-Dutch Meeting on Health Care Management - GOR AG HCM Workshop, Enschede, Netherlands, 2026.

Wiemer, I.; Geldermann, J. (2026), (Vortrag):
From OR Models to Practice: Improving Decision-Support for Duisburg’s Emergency Medical Service, 85. VHB Tagung, Göttingen, 2026.

Wiemer, I.; Geldermann, J. (2026), (Vortrag):
Optimizing Coverage under Capacity Limits: Balancing Ambulance Busyness by Integrating Bound Constraints, The 24th Conference of the International Federation of Operational Research Societies - IFORS 2026, Wien, Austria, 2026.

Wiemer, I.; Geldermann, J. (2025), (Vortrag):
Enhancing Fairness in Emergency Medical Services: Single- and Bi-Objective Model Formulations, International Conference on Operations Research 2025, 2025.

Wiemer, I.; Geldermann, J. (2025), (Vortrag):
Enhancing Fairness in Emergency Medical Service: Single- and Bi-Objective Model Formulations, 30th Meeting of EURO Working Group on Locational Analysis, Jerez de la Frontera, Spain, 2025.

Wiemer, I.; Geldermann, J. (2024), (Vortrag):
Modeling Emergency Medical Service Locations under Consideration of Uncertainty and Fairness – Case Study for the City of Duisburg, Germany, Forschungsaufenthalt am Basque Centre for Applied Mathematics (BCAM), Bilbao, 2024.

Wiemer, I.; Geldermann, J. (2024), (Vortrag):
Modeling Fairness in Covering Problems of Emergency Medical Service Location Planning, 33rd European Conference on Operational Research, Copenhagen, 2024.

Wiemer, I.; Geldermann, J. (2024), (Vortrag):
Analyse der Standortplanung des Rettungsdienstes in Duisburg mit Hilfe von Methoden des Operations Research, 16. Wissenschaftsforum Mobilität, 2024.

Wiemer, I.; Geldermann, J. (2024), (Vortrag):
A Bi-Objective Covering Location Model for Improving Fairness in Emergency Medical Service Systems, International Conference on Operations Research, 2024.

Wiemer, I. (2024), (Vortrag):
Planificación de la localización de ambulancias en problemas de cobertura: Modelización equitativa, Gastvortrag im Kurs: Programación Matemática, Grado de Matemáticas, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Duisburg/Bilbao, 2024.

Wiemer, I.; Pohl, E.; Geldermann, J. (2023), (Vortrag):
Open Educational Resources for Teaching Operations Research for Sustainability, International Conference on Operations Research - OR, Hamburg, 2023.

Wiemer, I.; Geldermann, J. (2023), (Vortrag):
Analyse der geografischen Herausforderungen der Stadt Duisburg für die Standortplanung des Rettungsdienstes, 15. Wissenschaftsforum Mobilität, Duisburg, 2023.

Wiemer, I.; Geldermann, J. (2023), (Vortrag):
Analyzing the Challenges of Planning the Emergency Medical Service Locations for the Metropolitan Region Ruhr, International Symposium on Locational Decisions (ISOLDE) XVI, Kaiserslautern und Baden-Baden, 2023.

Wiemer, I.; Grot, M.; Werners, B. (2022), (Vortrag):
Evaluation of Emergency Medical Service Location Models using different Performance Criteria, EURO Summer Institute on Location Science, Edinburgh, 2022.

Wiemer, I.; Grot, M.; Werners, B. (2022), (Vortrag):
Evaluation of EMS Location Models using Response Time Distribution Functions and (Conditional) Value at Risk, OR 2022 Annual Conference of the Operations Research Society of Germany, Karlsruhe, 2022.