2025
Dr. Niklas Kronemeyer
Dr. Niklas Kronemeyer completed his doctoral studies in January 2025 on the topic "Recycling as a key element in the future battery industry: Analysis of eco-nomic and environmental balance, global strategies and challenges for the industry". Supervisor was Prof. Dr. Jens Leker.2024
Dr. Anja Overwien
Dr. Anja Overwien completed her doctoral studies in November 2024 on the topic "How to promote student entrepreneurship". Supervisor was Prof. Dr. Jens Leker.Dr. Karla Gehde
Dr. Karla Gehde completed her doctoral studies in November 2024 on the topic "Digital business models in healthcare - essays on digital ventures in Germany". Supervisor was Prof. Dr. Jens Leker.Dr. Florian Frieden
Dr. Florian Frieden completed his doctoral studies in September 2024 on the topic "Optimizing the sustainable transformation in energy-intensive industries". Supervisor was Prof. Dr. Jens Leker.Dr. Janine Heck
Dr. Janine Heck completed her doctoral studies in August 2024 on the topic o"Transition towards a climate-neutral chemical industry". Supervisor was Prof. Dr. Jens Leker.Dr. Jannis Wesselkämper
Dr. Jannis Wesselkämper completed his doctoral studies in August 2024 on the topic "A circular economy for electric vehicle batteries - an assessment of supply chain strategies and business modals". Supervisor was Prof. Dr. Stephan von Delft.2023
Dr. Anton Block
Dr. Anton Block completed his doctoral studies in November 2023 on the topic "Investigating the dynamics of technological change: patent analysis in the battery industry". Supervisor was Prof. Dr. Jens Leker.Dr. Moritz Gutsch
Dr. Moritz Gutsch completed his doctoral studies in November 2023 on the topic "Co-assessment of costs and environmental impacts for low and negative carbon dioxide technologies". Supervisor was Prof. Dr. Jens Leker.2022
Dr. Ruth Herrmann
Dr. Ruth Herrmann completed her doctoral studies in March 2022 on the topic "From Micro to Macro - Harmonizing the lndividual Perspective of lnnovation Management". Supervisor was Prof. Dr. Jens Leker.Dr. Magdalena Kohut
Dr. Magdalena Kohut completed her doctoral studies in February 2022 on the topic "The role of R&D-intensive start-ups during collaborations in the context of open innovation". Supervisor was Prof. Dr. Jens Leker.Dr. Christiane Haschka Fortes
Dr. Christiane Haschka Fortes completed her doctoral studies in January 2022 on the topic "New Product Development Projects: understanding decision-making in context of speed". Supervisor was Prof. Dr. Jens Leker.Dr. Lukas Mauler
Dr. Lukas Mauler completed his doctoral studies in January 2022on "Strategies towards a decarbonised and battery-powered future: battery technologies, cost potentials and their implications for cost-effective technology selection". Supervisor was Prof. Dr. Jens Leker.2021
Dr. Matthew Greenwood
Dr. Matthew Greenwood completed his doctoral studies in November 2021 on the topic "Strategic Assessment of Lithium Ion Battery Technologies - Methods and Case Studies of Cost, Supply and Development of State-of-the-Art Lithium Ion Battery Cell Components". Supervisor was Prof. Dr. Jens Leker.Dr. Marcel Ahlfänger
Dr. Marcel Ahlfänger completed his doctoral studies on the topic "Managing Tensions in Open Innovation - An Empirical Analysis" in November 2021. Supervisor was Prof. Dr. Jens Leker.Dr. Marius Chofor Asaba
Dr. Marius Chofor Asaba completed his doctoral studies in July 2021 on "Promoting sustainable development of the lithium-ion battery: an analysis of certain aspects of the supply chain". Supervisor was Prof. Dr. Jens Leker.Dr. Tim Smolnik
Dr. Tim Smolnik completed his doctoral studies in May 2021 on "Value-creating effects of spin-offs - A cross-perspective analysis with a special focus on the chemical-pharmaceutical industry". Supervisor was Prof. Dr. Jens Leker.Dr. Thorsten Bergmann
Dr. Thorsten Bergmann completed his doctoral studies in March 2021 on the topic of "Possibilities and limits of a start-up accelerator for the foundation and development of new companies in the process industry". Supervisor was Prof. Dr. Jens Leker.2020
Dr. Fabian Duffner
Dr. Fabian Duffner completed his doctoral studies on the topic "Cost-efficient battery manufacturing: pushing the boundaries for ecological and economic convergence" in June 2020.Dr. Thomas Hamadi
Dr. Thomas Hamadi completed his doctoral studies in January 2020 on the topic of "Identifying and exploiting innovation potential in organic and printed electronics". Supervisor was Prof. Dr. Jens Leker.2019
Dr. Marc Wentker
Dr. Marc Wentker completed his doctoral studies in November 2019 on the topic of "Technology Assessment of Lithium-Ion Batteries - A Mutlidemensional Approach to Compare Technological Potentials". Supervisor was Prof. Dr. Jens Leker.Dr. Oliver Krätzig
Dr. Oliver Krätzig completed his doctoral studies in September 2019 on the topic of "Overcoming technology transfer barriers in German battery research". Supervisor was Prof. Dr. Jens Leker.Dr. Marius Stoffels
Dr. Marius Stoffels completed his doctoral studies on "Managing digital transformation in the process industries" in July 2019. Supervisor was Prof. Dr. Jens Leker.Dr. Lukas Aaldering
Dr. Lukas Aaldering completed his doctoral studies on "Understanding Dynamic Business Environments - Data-driven approaches for high-tech industries" in June 2019. Supervisor was Prof. Dr. Jens Leker.Dr. Gerrit Knipsel
Dr Gerrit Knispel completed his doctoral studies on the topic "How to Leverage Digital Technologies through Business Model Innovation - The Role of the Top Management Team, Dynamic Capabilities, and Enviromental Turbulence" in April 2019. Supervisor was Prof. Dr. Jens Leker.2018
Dr. Birte Golembiewski
Dr. Birte Golembiewski completed her doctoral studies in December 2018 on the topic "Determinants of and Relationships between Corporate Environmental Management, Innovation and Performance - A comprehensive study of the chemical industry". Supervisor was Prof. Dr. Jens Leker.Dr. Leonard Stuckenborg
Dr. Leonard Stuckenborg completed his doctoral studies in November 2018 on the topic "German FinTech performance - Market segmentation and empirical evidences of valuation opportunities". Supervisor was Prof. Dr. Jens Leker.Dr. Johannes Klein
Dr. Johannes Klein completed his doctoral studies in November 2018 on the topic of "Attracting professional and crowd investors through effective signalling - Evidence of success factors for FinTechs in German start-up markets". Supervisor was Prof. Dr. Jens Leker.Dr. Jan-André Pramann
Dr. Jan-André Pramann completed his doctoral studies in November 2018 on the topic of "The cash flow statement in the transition from GAS 2 to GAS 21 - empirical findings on switching behaviour". Supervisor was Prof. Dr. Jens Leker.Dr. Ménès Etingue Kum
Dr. Ménès Etingue Kum completed his doctoral studies in February 2018 on the topic "Sucess Factors of Future Orientation Practices: Value Contribution of Corporate Foresight and Organizational Agility on Performance, in the new Context of Digitization". Supervisor was Prof. Dr. Jens Leker.2017
Dr. Sebastian Eidam
Dr. Sebastian Eidam completed his doctoral studies on the topic of "Stakeholder management in the cooperative development of medicinal products" in June 2017. Supervisor was Prof. Dr. Jens Leker.Dr. Mathias Ollmann
Dr. Mathias Ollmann completed his doctoral studies in April 2017 on the topic of "Factors influencing the crisis resistance of companies - An empirical analysis of performance paths based on modern balance sheet analysis". Supervisor was Prof. Dr. Jens Leker.2016
Dr. Hauke Simon
Dr. Hauke Simon completed his doctoral studies in October 2016 on the topic "Data-driven discovery of growth fields - Evaluating opportunities in collaboration and new product development". Supervisor was Prof. Dr. Jens Leker.Dr. Hangzi Zhu
Dr. Hangzi Zhu completed her doctoral studies in Feburary 2016 on the topic "Crowdsourcing in the Front End of Innovation - Empirical Evidence from the Chemical Industry". Supervisor was Prof. Dr. Jens Leker.2015
Dr. Nicole Dürr (née vom Stein)
Dr. Nicole Dürr (nèe vom Stein) completed her doctoral studies in December 2015 on the topic of "Technological distance in collaborative research projects - their calculation, perception and interactions". Supervisor was Prof. Dr. Jens Leker.Dr. Xiaoheng Yu
Dr. Xiaoheng Yu completed her doctoral studies in November 2015 on the topic of "Identification and analysis of technological competitiveness based on patent information - a comparative study between Germany and China using the example of electromobility". Supervisor was Prof. Dr. Jens Leker.Dr. David Sonius
Dr. David Sonius completed his doctoral studies in November 2015 on the topic "Dynamics of corporate crises: An empirical study on the reaction of credit institutions and crisis companies in the run-up to the manifest crisis stage". Supervisor was Prof. Dr. Jens Leker.Dr. David Elvers
Dr. David Elvers completed his doctoral studies in October 2015 on the topic "Cooperation in New Product Development - A Value Chain Oriented Approach". Supervisor was Prof. Dr. Jens Leker.Dr. Chie hoon Song
Dr. Chie hoon Song completed his doctoral studies in March 2015 on the topic "Early detection of converging technologies". Supervisor was Prof. Dr. Jens Leker.2014
Dr. Gerrit Böhm
Dr. Gerrit Böhm completed his doctoral studies in November 2014 on the topic "Development of business model-specific balance sheet rating models - performance enhancement through balance sheet homogenisation". Supervisor was Prof. Dr. Jens Leker.Dr. Carsten Gelhard
Dr. Carsten Gelhard completed his doctoral studies in October 2014 on the topic "A Backward and Forward Consideration of the External Value Co-Creation Process: Performance Implications in the Short- and Long-term". Supervisor was Prof. Dr. Jens Leker.Prof. Dr. Stephan von Delft
Prof. Dr. Stephan von Delft completed his doctoral studies in October 2014 on "An Integrative Perspective on Generic Business Model Design Themes: The Linkage between Strategic Orientation and Dynamic Capabilities". Supervisor was Prof. Dr. Jens Leker.Dr. Nina Preschitschek
Dr. Nina Preschitschek completed her doctoral studies in October 2014 on the topic "Effects of raw material change on existing technology, market and industry boundaries". Supervisor was Prof. Dr. Jens Leker.Dr. Julia Elbert (née Schwarzlose)
Dr. Julia Elbert completed her doctoral studies in October 2014 on the topic of "Teams in New Business Development - Increasing Team Performance through Ambidextry". Supervisor was Prof. Dr. Jens Leker.Dr. Manuel Bauer
Dr. Manuel Bauer completed his doctoral studies in March 2014 on the topic of "Managing a portfolio of innovation capabilities - A systems approach in and for the Chemical Industry". Supervisor was Prof. Dr. Jens Leker.Dr. Jan Henrik Wosnitza
Dr. Jan Henrik Wosnitza completed his doctoral studies on the topic "Analysis of log-periodic power law patterns in time series related to credit risk" in March 2014. Supervisor was Prof. Dr. Jens Leker.2013
Dr. Bernd Galler
Dr. Bernd Galler completed his doctoral studies in July 2013 on the topic of "Scarce Data based Credit Risk Assessment - Evaluating Missing Data Methods in PD-estimation by Logistic Regression". Supervisor was Prof. Dr. Jens Leker.Dr. Nathalie Sick
Dr. Nathalie Sick completed her doctoral studies in June 2013 on the topic of "Diffusion of Renewable Energy Technologies - An Empirical Analysis with Special Consideration of Commodity Prices". Supervisor was Prof. Dr. Jens Leker.Dr. Markus Weiß
Dr. Markus Weiß completed his doctoral studies in January 2013 on the topic of "Risk factors in the tax consulting profession - an empirical analysis". Supervisor was Prof. Dr. Jens Leker.2012
Dr. Christos Lecou
Dr. Christos Lecou completed his doctoral studies in July 2012 on the topic of "Promoting ideas in the early phase of the innovation process, continuation and break-up decisions in the front end". Supervisor was Prof. Dr. Jens Leker.Dr. Steffen Kanzler
Dr. Steffen Kanzler completed his doctoral studies in June 2012 on the topic of "Nanotechnology research between Chinese and German scientists - network effects in R&D cooperation". Supervisor was Prof. Dr. Jens Leker.Dr. Martin Kirchner
Dr. Martin Kirchner completed his doctoral studies in March 2012 on the topic of "The Corporate Sustainability Map - An Approach to Measuring Corporate Sustainability Performance". Supervisor was Prof. Dr. Jens Leker.Dr. Sebastian Kortmann
Dr. Sebastian Kortmann completed his doctoral studies on the topic "The relationship between organizational structure and organizational ambidexterity: a comparison between manufacturing and service firms" in January 2012. Supervisor was Prof. Dr. Jens Leker.2011
Dr. David Große Kathöfer
Dr. David Große Kathöfer completed his doctoral studies on "The Not-Invented-Here Syndrome in Science - Relevance, Causes, Consequences" in November 2011. Supervisor was Prof. Dr. Jens Leker.Dr. Paul Markus Konrad
Dr. Paul Markus Konrad completed his doctoral studies in November 2011 on "The Calibration of Rating Models Estimation on the Probability of Default based on Advanced Pattern Classification Methods". Supervisor was Prof. Dr. Jens Leker.Prof. Dr. Andreas Del. Re (née Fischer)
Prof. Dr. Andreas Del Re (née Fischer) completed his doctoral studies in June 2011 on the topic of "Development of a cross-national balance sheet rating model - An empirical study based on German and Italian annual financial statements". Supervisor was Prof. Dr. Jens Leker.Dr. Irina Tiemann
Dr. Irina Tiemann completed her doctoral studies on "Supplier Management in New Product Development" in July 2011. Supervsior was Prof. Dr. Jens Leker.2010
Dr. Clive-Steven Curran
Dr. Clive-Steven Curran completed his PhD in September 2010 on "The Anticipation of Converging Industries: A Concept Applied to Nutraceuticals and Functional Foods". Supervisor was Prof. Dr. Jens Leker.2009
Dr. Benjamin Niedergassel
Dr. Benjamin Niedergassel completed his doctoral studies in November 2009 on "Knowledge Sharing in Collaborative R&D Projects". Supervisor was Prof. Dr. Jens Leker.Dr. Verena Thiemann (née Holtorf)
Dr. Verena Thiemann (née Holtorf) completed her doctoral studies in November 2009 on the topic of "Teams in the Front End - Increasing Entrepreneurial Behaviour through Structured Teams". Supervisor was Prof. Dr. Jens Leker.Dr. Jan-Henning Trustorff
Dr. Jan-Henning Trustorff completed his doctoral studies in November 2009 on the topic of "The Use of Support Vector Machines for the Creditworthiness Assessment of Companies". Supervisor was Prof. Dr. Jens Leker.Prof. Dr. Uwe Kehrel
Prof. Dr. Uwe Kehrel completed his doctoral studies in April 2009 on the topic of "Controlling in clinical research - an empirical analysis of science-initiated clinical trials". Supervisor was Prof. Dr. Jens Leker.Dr. Danyang Liu
Dr. Danyang Liu completed her doctoral studies in January 2009 on the topic of "Success factors of internal networks in the chemical industry". Supervisor was Prof. Dr. Jens Leker.2008
Dr. Michael Leßing
Dr. Michael Leßing completed his doctoral studies in December 2008 on the topic of "Technology transfer and "intra firm" diffusion of knowledge-intensive synergetic R&D process technologies using the example of computational chemistry technologies". Supervisor was Prof. Dr. Jens Leker.2007
Dr. Philipp Herzog
Dr. Philipp Herzog completed his doctoral studies on "Open and Closed Innovation: Different Cultures for different Strategies" in November 2007. Supervisor was Prof. Dr. Jens Leker.Dr. Dirk Mahlstedt
Dr. Dirk Mahlstedt completed his doctoratal studies in November 2007 on the topic of "IFRS and Balance Sheet Rating - An Empirical Study Based on First-time IFRS Users". Supervisor was Prof. Dr. Jens Leker.Dr. Martin Bade
Dr. Martin Bade successfully completed his doctoral studies on "The Balanced Scorecard as a Strategic Management Instrument for a Medical Faculty" at the Medical School of the University of Münster in March 2007.Dr. Andrea van der Velde
Dr. Andrea van der Velde completed her PhD on "Drug Rescue in Drug Discovery - Open-Market Innovation in Pharmaceutical R&D" in March 2007. Supervisor was Prof. Dr. Jens Leker.2006
Dr. Eva Pieper (née Scheffczyk)
Dr. Eva Pieper (née Scheffczyk) completed her doctoral studies in December 2006 on the topic "Investigation of legal over-indebtedness in the audit of annual financial statements in the context of the going-concern assumption". Supervisor was Prof. Dr. Jens Leker.Dr. Birgit Botterweck
Dr. Birgit Botterweck completed her thesis on "Macroeconomic Factors in Internal Rating - An Empirical Investigation into the Review of Corporate Creditworthiness" in December 2006. Supervisor was Prof. Dr. Jens Leker.Dr. Stefan Picker
Dr. Stefan Picker completed his doctoral studies in December 2006 on the topic of "Innovation and cooperation management in biotechnology - technology sourcing and the creation of new resources". Supervisor was Prof. Dr. Jens Leker.Dr. Saskia Rühmer
Dr. Saskia Rühmer completed her doctoral studies in July 2006 on the topic "Innovation cooperation in nanotechnology - from the smallest particles to value creation networks". Betreuer der Doktorarbeit war Prof. Dr. Jens Leker.2005
Dr. Franziska Isele
Dr. Franziska Isele completed her doctoral studies in October 2005 on the topic of "Success factors in process innovations in the paint sector in France, Germany and the USA". Supervisor was Prof. Dr. Jens Leker.Prof. Dr Stefanie Bröring
Prof. Dr. Stefanie Bröring completed her doctoral studies in March 2005 on the topic "The Front End of Innovation in Converging Industries: The case of Nutraceuticals and Functional Foods". Supervisor was Prof. Dr. Jens Leker.2004
Dr. Carsten Schaffer (née Vehring)
Dr. Carsten Schaffer (née Vehring) completed his doctoral studies in October 2004 on the topic of "Identifying and Evaluating Success Factors for Basic Innovations in the Chemical Industry - An Analysis Using the Polymers Polyethylenimine and Polyvinylamine as an Example". Supervisor was Prof. Dr. Jens Leker.2003
Dr. Arne Fischer
Dr. Arne Fischer completed his doctoral studies in September 2003 on the topic "Use of Qualitative Features in the Credit Rating of Corporate Clients - An Empirical Analysis Using the Example of a Bank's Internal Rating System". Supervisor was Prof. Dr. Jens Leker.Prof. Dr. Hans-Jürgen Wieben
Prof. Dr. Hans-Jürgen Wieben completed his doctoral studies in September 2003 on the topic of "Credit Rating and Risk Management: A Systematic Comparison of Two Analysis Concepts". Supervisor was Prof. Dr. Jens Leker.Dr. Nicole Hamelau
Dr. Nicole Hamelau completed her doctoral studies in July 2003 on the topic of "Competitive Analysis - An Instrument of Strategic Corporate Management". Supervisor was Prof. Dr. Jens Leker.
