| 2021 | Book publication: Nahrungsergänzung im Selbstversuch |
| 2020 | Article publication: Does vitamin D protect against Covid-19? |
| 2018 | Book publication: Zucker - Tödliche Versuchung |
| 2011 - 2018 | Member of the board of eBuch eG (2017: 850 bookstores with external sales of approx. € 200 million, eBuch central warehouse sales approx. € 120 million) |
| 2007 | Development of the market research tool POSIS© for media control |
Press conference on POSIS© at Popkomm 2007 with (from right) Prof. Schuster, Dean of Computer Science at Heidelberg University of Applied Sciences, Ulrike Altig and Ralph Kienle, media control, hidden: Moderator Mike Timm, LB:
| 2006 | Market & Customer: The "new" bookstore (Börsenblatt 20/2006) | 2005 | Concept & development of the web based POS system BELAMI (2007: >90 installations) |
| 2004 - 2007 | Start, organisation and support of the ANABEL central warehouse of eBuch e.G. (2007: >230 connected book stores, external sales € >44 million) |
| 2002 - 2004 | Projecting and development of the reference model ANABEL |
| May/June
2002 & May 2006 |
Analysis and Critique of the PISA study
(PISA 2002
&
PISA reloaded
2006) published among others in SPIEGEL ONLINE |
| 2000-2001 | Development and setup of representative market research with real POS-Daten (Retail panel "Buch" of media control / Industry monitor BUCH of BÖV) |
| 2000 | Founded the fast-growing booksellers' cooperative eBuch eG, General agent, from 2011 on the board of directors. |
| 1998 | Co-development of internet store system with connection to POS/MMS in stationary book retailing (>100 installations) |
| 1994 | First statistical study on the supply capability of the four German book wholesalers, published in the industry magazine BuchMarkt |
| Since 1991 | Development of a POS/MMS for bookstores (TANGO, >>120 installations) |
| 1989 - 1995 | Various DB and PPS projects, e.g. for Mannesmann-Rexroth (int. pricing for pneumatic pumps), DuPont de Nemours (CAD management), Dornier etc. |
| End 1989 | Self-employed system consultant in Heidelberg |
| 1988 - 1989 | Executive assistent at ADI Software
GmbH, Karlsruhe. Project Manager LIMS (Development of a Laboratory Information System for BASF) |
| 1986 - 1988 | Commercial employee at JACOM, Heidelberg |
| 1982 - 1986 | Research assistant at the Institute of Sociology (EDP station, Prof. Schleth) |
| 1980 - 1986 | Study of sociology and politics at the University of Heidelberg |
| 1980 - 1981 | Study "Heating with heat pumps, oil, gas and electricity" commissioned by IFEU (SPIEGEL Online: Tinkerers in the Green) and the Stiftung Mittlere Technologie |
| 1977 | Co-founding of the Institute for Energy and Environmental Research (IFEU) in Heidelberg |
| 1976 - 1980 | Study of physics/mathematics (University of Heidelberg) |