Dr. Alexander Herzog

Career

Education

• 1999-2004 Studies of Mathematics at the TU Clausthal.
• 2008 doctorate to Dr. rer. nat.

University activity

• 2002-2003 Assistant researcher at the Institute of Mathematics at the TU Clausthal.
• Since 2004 research associate at the Institute of Mathematics in the research group "Stochastic Models in Engineering".
• Since 2009 research associate at the Simulation Science Center of the TU Clausthal.
• Since 2013 managing director of the Simulation Science Center Clausthal-Göttingen.

Industrial projects

• 2006-2007 Project with Arcor AG on demand analysis and optimization of call centers.
• 2007-2008 Project with Lufthansa AG on punctuality optimization of flight schedules.
• 2012 Project with Siemens AG on total airport management.
• 2012-2013 Training "Statistics with Excel" for Telekom AG.
• 2014-2018 Project with Salzgitter Flachstahl GmbH to optimize surface inspection in strip steel production.
• 2017-2020 Project with AG der Dillinger Hüttenwerke on modeling, stochastic simulation and optimization of production processes in heavy plate production.

Honorary activities

• Since 2008 member of the jury of the state competition Jugend forscht in Lower Saxony.

Competences

• Event-oriented stochastic simulation (see Callcenter Simulator and SimOps)
• Markov chains and continued fractions
• Queueing theory (see Queueing Calculator)
• Time series analysis
• Application development (especially in Java, Delphi and php/Javascript)

Accompanied lectures

• Algebra I (WS 2002/2003; Dr. Elsholtz)
• Algebra II (SS 2003; Dr. Elsholtz)
• Analysis II (SS 2004; Prof. Kairies)
• Analysis III (WS 2004/2005; Prof. Kairies)
• Proseminar Analysis (WS 2004/2005; Prof. Kairies)
• Stochastics I (WS 2004/2005; Prof. Hanschke)
• Stochastics II (SS 2005; Prof. Hanschke)
• Correspondence course Practical Statistics (SS 2005; Prof. Hanschke)
• Stochastics III (WS 2005/2006; Dr. Mederer)
• Hauptseminar Stochastik - Queueing Theory (WS 2005/2006; Prof. Hanschke)
• Stochastics IV (SS 2006; Prof. Hanschke)
• Engineering Statistics II (SS 2006; Prof. Hanschke)
• Stochastics I (WS 2006/2007; Prof. Hanschke)
• Stochastics II (SS 2007; Prof. Hanschke)
• Stochastics III (winter term 2007/2008; Prof. Hanschke)
• Stochastics IV (SS 2008; Prof. Hanschke)
• Distance course Engineering Statistics (SS 2008; Prof. Hanschke)

Lectures given

• Stochastic Modeling and Simulation (WS 2008/2009)
• Block lecture Statistics with Excel (WS 2012/2013)
• Mathematics for Business Administration and Chemistry II (SS 2013)

Supervised theses

• C. Grothjohann: "Outsourcing strategies for call centers" (Diploma thesis, 2007)
• T. Gröger: "Queuing systems with group arrivals, group conditions and heterogeneous customers" (Diploma thesis, 2007)
• F. Schink: "Value Based Departure Sequencing" (bachelor thesis, 2012)
• F. Schink: "Revision of defect classification of surface inspection systems by downstream cluster analysis (ROCA)"(Master thesis, 2014).
• S. Rodler: "Systematic serial defect detection in the context of post-evaluation of surface inspection results"(Bachelor thesis, 2014).

Participation in the preparation of the following lecture notes

• Stochastics I (Prof. Hanschke)
• Stochastics II (Prof. Hanschke)
• Stochastics III (Prof. Hanschke)
• Analysis I-III (Prof. Mertins)
• Topology (Prof. Mertins)
• Functional Analysis (Prof. Mertins)
• Operator Theory (Prof. Mertins)
• Algebra I&II (Prof. Klotz)
• Algebra I&II (Dr. Elsholtz)

Projects of the Institute

• Project ELAN (E-Learning Academic Network): Development of the online script system and implementation of the online scripts for Stochastics I to III.
• Development and administration of the homepage of the Institute of Applied Stochastics and Operations Research and of the working group Stochastic Models in Engineering Sciences
• Stud.IP: Administration of the learning management platform Stud.IP for the Institute of Mathematics and the Institute of Applied Stochastics and Operations Research (until 2009)

• Member of the editorial team"Studieren in Clausthal" (especially coordination of the Bachelor-Master transition possibilities at the TU Clausthal)
• Collaboration in the further development of the homepage and web services of the TU Clausthal(central web pages, campus map, mobile web pages, search function and others)

Bridge course in mathematics for economists

Authors: Walter Purkert, Alexander Herzog Published: Springer, 2022

ISBN (e-book): 978-3-658-36742-8 ISBN (softcover): 978-3-658-36741-1

• 2008/10/28: Spiegel Online: "How we could all store faster".
• Quarter 1/2011: iQ Journal (VDI Braunschweiger Bezirksverein): "Applied mathematics at the TU Clausthal" (author).
• 6/25/26/2012: Nürnberger Nachrichten: "When nothing moves forward" (German)
• 8/1/2012: Kölner Stadt-Anzeiger: "Why queues make us so angry"
• 8/19/2012: Rheinpfalz am Sonntag: "I was there first!"
• 7.10.2012: Sonntag Aktuell: "Conjuring up is no use"