Dr. Samuel de Haas

CV  Grants  Presentations  Teaching   

CURRENT RESEARCH INTERESTS

• Web Scraping & Data Mining in IO
• Empirical IO
• Theoretical IO
• Simulation and Heuristic Optimization (esp. in MATLAB)

Academic Employment Experience

01/2019 - present: Justus-Liebig-University, Giessen, Germany (Postdoctoral researcher) 

10/2014 - 01/2019: Justus-Liebig-University, Giessen, Germany (Graduate Research Assistant, PhD student)

10/2011 - 09/2014: Justus-Liebig-University, Giessen, Germany (Teaching Assistant)

Education

10/2014 - 01/2019: Justus-Liebig-University, Giessen, Germany

     Dr. rer. pol. - "Five Essays on Economics and Statistics"

     PhD-studies in economics (Industrial Organization, Competition Policy, Econometrics)

 

10/2012 - 09/2014: Justus-Liebig-University, Giessen, Germany

 

     M.Sc. - "Investments in Rivals' Stake, Partial Cross Ownership and Collusion"

     Master of Science in Economics (Industrial Organization, Regulation, Econometrics)

10/2009 - 09/2012: Justus-Liebig-University, Giessen, Germany

 

     B.A. - "Der deutsche Tankstellenmarkt: Bestandsaufnahme & Evaluierung regulatorischer Eingriffe"

     Bachelor of Arts in Economics (General Economics, Competition Policy, Econometrics)

     Award: Best in Class, 2012

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PUBLICATIONS

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Articles in Refereed Journals

• "Entry deterrence due to brand proliferation: Empirical evidence from the German interurban bus industry" De Haas, S., Herold, D., Schaefer J. T., International Journal of Industrial Organization, 102844, 2022.
• "Non-Controlling Minority Shareholdings and Collusion", de Haas, S. and J. Paha (2020). Review of Industrial Organization.
• "Shopping hours and entry - An empirical analysis of Aldi's opening hours", de Haas, S.; D. Herold and J. Schäfer (2019). Journal of Industry, Competition and Trade.
• "Detecting Fraudulent Interviewers by Improved Clustering Methods – The Case of Falsifications of Answers to Parts of a Questionnaire", de Haas, S. and P. Winker (2016). Journal of Official Statistics, Vol. 32, No. 3, 643-660
• "Identification of Partial Falsifications in Survey Data", de Haas, S. and P. Winker (2014). Statistical Journal of the IAOS, Vol. 30, 271-281.

 

Articles in Non-Refereed Journals

• "Pegel runter, Preise hoch – Wie der Rheinpegel die Tankstellenpreise in Hamburg beeinflusst", de Haas, S., D. Herold and J.T. Schäfer (2019). Wirtschaftsdienst, Vol. 99 (4), 296 - 298.

 

Discussion Papers 

• "Do pump prices really follow Edgeworth cycles? Evidence from the German retail fuel market", de Haas, S. (2019). MAGKS Discussion Paper, No. 13-2019.
• "Endogenous choice of minority shareholdings: Effects on product market competition", de Haas, S. (2019). MAGKS Discussion Paper, No. 12-2019.
• "Entry deterrence due to brand proliferation: Empirical evidence from the German interurban bus industry", de Haas, S.; D. Herold and J.T. Schäfer (2017). MAGKS Discussion Paper, No. 31-2017.
• "Shopping hours and entry - An empirical analysis of Aldi's opening hours", de Haas, S.; D. Herold and J. Schäfer (2017). MAGKS Discussion Paper, No. 51-2017.
• "Partial cross ownership and collusion", de Haas, S. and J. Paha (2016). MAGKS Discussion Paper, No. 32-2016.

 

Reports / Surveys

• "Barriers to Cross-Border Entry into Retail Energy Markets", de Haas, S. and Götz, G. with E-Bridge (2014). Report for ACER Market Monitoring Report 2014.

Book Reviews

• Die Marktintegration der Stromerzeugung aus erneuerbaren Energien (Arbeitspapier-Version). de Haas, S. and Götz, G (2014). Jahrbücher für Nationalökonomie und Statistik, Vol. 234/6, 829-831.

 

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PRESENTATIONS

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Conference Presentations

2017   EARIE Annual Conference, Maastricht (Shopping hours and entry & Endogenous Choice of Minority Shareholdings and Collusion)

2017   MaCCI Annual Conference, Mannheim (Shopping hours and entry)

2016   EARIE Annual Conference, Lisbon (Partial Cross Ownership and Collusion)

2016   MaCCI Annual Conference, Mannheim (Endogenous Choice of Minority Shareholdings and Collusion)

2015   MaCCI Annual Conference, Mannheim (Partial Cross Ownership and Collusion)

2014   ESA/RN 21, Mannheim (Identification of Partial Falsifications in Survey Data)

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TEACHING

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Lectures

• Introduction to Economics (2018-present, THM Friedberg)
• Web Scraping, Data Mining and Empirical Methods (2017-present, JLU Giessen)

 

Class / Tutorials

• Web Scraping, Data Mining and Empirical Methods (2017-present, JLU Giessen)
• Economics of Innovation (2015-present, JLU Gießen)
• Principles of Microeconomics (2012-present, JLU Giessen)
• Introduction to Industrial Organization and Competition Policy (2012-14, JLU Giessen)

 

Seminars

• Big Data and Empirical Methods in IO (2019, JLU Giessen)
• Big Data and Empirical Methods in IO (2018, JLU Giessen)
• Competition and Consumer Protection (2017, JLU Giessen)
• Current Questions about Competition Policy and Regulation (2016, JLU Giessen)
• Economic Developments in the German Energy Sector (2015, JLU Giessen)

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