Prof. Dr. Ulrich Seidenberg (pens.)
seidenberg@bwl.wiwi.uni-siegen.de
Prof. Seidenberg retired on March 1, 2022.
Courses will no longer be offered, but selected research activities will continue.
Further information about Prof. Dr. Ulrich Seidenberg can be found below:

Publications
- Schenkelberg, K./Seidenberg, U./Ansari, F.: A Simulation-based Process Model for Analyzing Impact of Maintenance on Profitability, 25th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA), Vienna, Austria, 2020, pp. 805-812
- Schenkelberg, K./Seidenberg, U./Ansari, F.: Supervised Machine Learning for Knowledge-Based Analysis of Maintenance Impact on Profitability, IFAC-PapersOnLine, Vol. 53, Issue 2, 2020, pp. 10651-10657
- Khobreh, M./Ansari, F./Seidenberg, U.: A Knowledge-Based Approach for Linking Workforce Experience and Labor Productivity in Smart Factory Industry 4.0, in: Bichler-Ripfel, H./Kragulj, F. (Eds.): Building Future Competences - Challenges and Opportunities for Skilled Crafts and Trades in the Knowledge Economy, Vol. 2, Vienna 2020, pp. 17-35 (ISBN 978-3-7089-2014-6)
- An earlier version of this article has been published as a conference paper: Khobreh, M./Ansari, F./Seidenberg, U.: Applying Job-Know Ontology towards Linking Workforce Experience and Labor Productivity in Smart Factory Industry 4.0, in: Tome, E./Kragulj, F. (Eds.): Proceedings of the International Conference Theory and Applications in the Knowledge Economy TAKE 2019 - Vienna, Austria, July 3-5 2019, 2019, pp. 706-722.
- Schenkelberg, K./Seidenberg, U./Ansari, F.: Analyzing the impact of maintenance on profitability using dynamic bayesian networks, in: Teti, R./D'Addona, D. M. (Eds.): Procedia CIRP - 13th CIRP Conference on Intelligent Computation in Manufacturing Engineering, 17-19 July 2019, Gulf of Naples, Italy, Vol. 88 (2020), pp. 42-47
- Seidenberg, U.: Fehler, Fehlerkulturen und Qualität, in: DIAGONAL zum Thema: Fehler, Zeitschrift der University of Siegen, H. 40 (2019), pp. 11-35, ISBN 9783847109983 (Print), 9783847009986 (eBook)
- Ansari, F./Khobreh, M./Seidenberg, U./Sihn, W.: A problem-solving ontology for human-centered cyber physical production systems, CIRP Journal of Manufacturing Science and Technology, Vol. 22 (2018), pp. 91-106
- Seidenberg, U./Ansari, F.: Qualitätsmanagement in der additiven Fertigung - Herausforderungen und Handlungsempfehlungen, in: Leupold, A./Glossner, S. (eds.): 3D Printing - Recht, Wirtschaft und Technik des industriellen 3D-Drucks, Munich 2017, pp. 159-213, ISBN 978-3-406-70751-3
- Ansari, F./Schenkelberg, K./Seidenberg, U./Fathi, M.: Problem-Solving in the Digital World: Synoptic Formalism, Incrementalism, and Heuristics, Encyclopedia of Computer Science and Technology, 2nd Edition, Ed.: Laplante, P. A., CRC Press, Taylor & Francis: New York 2017, ISBN 978-1-4822-0819-1 (Print), 978-1-4822-0822-1 (eBook)
- Ansari, F./Seidenberg, U.: A Portfolio for Optimal Collaboration of Human and Cyber Physical Production Systems in Problem-Solving, Proceedings of the 13th International Conference on Cognition and Exploratory Learning in Digital Age (CELDA 2016), Mannheim, October 28-30, International Association for Development of the Information Society, pp. 311-315, 2016
- Ansari, F./Seidenberg, U./Stock, A./Vogel, M.: Cost Controlling of Wind Energy Plants using Maintenance Process Modeling, 21st IEEE International Conference on Emerging Technologies and Factory Automation (IEEE ETFA 2016), Berlin, September 6-9, 2016
- Ansari, F./Fathi, M./Seidenberg, U.: Problem-Solving Approaches in Maintenance Cost Management: A Literature Review, Journal of Quality in Maintenance Engineering, Vol. 22, Iss. 4, pp. 334-352, 2016
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Blohm, H./Beer, T./Seidenberg, U./Silber, H.: Produktionswirtschaft, 5th ed., Herne 2016, textbook, 647 p., Verlag Neue Wirtschafts-Briefe, (ISBN 978-3-482-63025-5)
From the contents:
- Introduction to production economics
- Production and cost theory basics
- The productive factors
- The production process
- The product
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Locations and production structures
New features in the fifth edition include a separate section on the much-discussed topic of "Industry 4.0". In addition, the book has been updated and expanded due to numerous legal changes. These include, for example, the Circular Economy Act and other relevant environmental regulations such as the Renewable Energy Sources Act.
- Ansari, F./Fathi, M./Seidenberg, U.: Combining Synoptic and Incremental Approaches for Improving Problem-Solving in Maintenance Planning, Monitoring and Controlling, in: Proceedings of 9th Interdisciplinary Workshop On Intangibles, Intellectual Capital And Extra-Financial Information, European Institute for Advanced Studies in Management (EIASM), Copenhagen, Denmark, September 26-27, 2013, (ISSN 2295-1679)
- Seidenberg, U.: Characteristics and application conditions of incremental management approaches, Siegen 2012, Discussion paper, 55 p. In this discussion paper, the incremental management approaches strategy of uncoordinated small steps (Braybrooke/Lindblom), logical incrementalism (Quinn), piecemeal technology (Popper) and Kaizen (Imai) are presented, comparatively analyzed and contrasted with the synoptic problem-solving model. On the basis of a typology of problem situations and the distinction between degenerative and progressive problem shifts, the way to a general assignment of problem situations to suitable problem-solving models is shown.
- Ansari, F./Fathi, M./Seidenberg, U.: Developing an Algebraic Model for Administrating Preventive Maintenance Cost of Production Machines, in: Proceedings of 4th World Conference on Production & Operations Management and the 19th Annual EurOMA Conference, University of Amsterdam 2012
- Ansari, F./Fathi, M./Seidenberg, U.: Integration of Knowledge Management in Preventive Maintenance Cost Controlling Using Performance Indicators, Chicago: CGPublisher 2012
- Ansari, F./Fathi, M./Seidenberg, U.: Evolution of Intelligent Quality Management Process Based on Using Performance Quality Indicators, in: Maier, R. (ed.): 6th Conference on Professional Knowledge Management - From Knowledge to Action, Bonn 2011, pp. 149-160, (ISBN 978-3-88579-276-5)
- Blohm, H./Beer, T./Seidenberg, U./Silber, H.: Produktionswirtschaft, 4th ed., Herne 2008, textbook, 635 p., Verlag Neue Wirtschafts-Briefe, (ISBN 978-3-482-63024-8)
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Seidenberg, U.: Produktions- und Kostentheorie - Eine Einführung anhand von Schaubildern, Aachen 2004, script, 154 p., Mainz Verlag, (ISBN 3-86130-392-2). The reader is familiarized with the basics of production and cost theory by means of diagrams. The overviews and graphical representations are intended to create an organizational grid and simplify access to the subject matter, which is often perceived as unwieldy. Due to its condensed presentation, the script is also particularly suitable as a revision course for exam preparation.
Table of contents:
Part A
1 Subject of production and cost theory
1.1 Basic concepts
1.2 System of productive factors
1.3 Object of knowledge and modeling
1.4 Typology of production
1.5 Production management goals
2. basic production and cost theoretical relationships
2.1 Fundamentals of production theory
2.2 Fundamentals of cost theory
3. production and cost theory statements based on the Leontief production function
3.1 Illustration of the Leontief production function using an example (one-product case with two input factors)
3.2 Leontief production function for multi-stage production (example)
3.3 Parts lists, gozintographs and matrices as alternative forms of representation of product structures
4. production and cost theoretical statements on the basis of the Gutenberg production function (type B production function)
4.1 Representation of the Gutenberg production function
4.2 Forms of adjustment
5 Other production and cost functions
5.1 Yield-law production and cost function (type A production function)
5.2 The Cobb-Douglas production function as an example of a neoclassical production function
Part B: Exercises
- Seidenberg, U.: An extended model of customer integration, Siegen 2003, working paper, 40 pp. This working paper presents an extended model of customer integration based on a dualistic view of the transformational and interaction-related aspects of service processes. Further essential features of the model are a three-phase structure in a pre-, final- and post-combination as well as the introduction of a multi-stage interaction between supplier and customer as a sequence of elementary cycles.
- Seidenberg, U.: Hans Blohm on his 80th birthday, in: Zeitschrift Interne Revision (ZIR), 35 (2000) 4, p. 174 f.
- Seidenberg, U./Stuhlert, M.: Wertanalyse zeitgemäß - Expertenbefragung zeigt Nutzen für das Qualitätsmanagement auf, in: Qualität und Zuverlässigkeit (QZ), 45 (2000) 6, pp. 764-767 and 45 (2000) 8, p. 1002
- Seidenberg, U.: Wertanalyse im reagiblen Unternehmen - Defizite und Entwicklungsperspektiven einer traditionellen Methode, in: Dangelmaier, W./Felser, W. (eds.): Das reagible Unternehmen, Paderborn 2000, pp. 351-373
(ISBN 3-931466-93-0) - Seidenberg, U./Stuhlert, M.: Kundenorientierung der Wertanalyse - Ergebnisse einer empirischen Studie, Siegen 1999, working paper, 43 pp. The working paper documents the results of an expert survey conducted between January and March 1999. As part of the written survey, 300 questionnaires were sent to experts in value analysis. A total of 70 questionnaires were returned, of which 67 could be analyzed. The results of this study provide exemplary evidence of how value analysis is used in practice. The known advantages also become clear in the application. At the same time, however, the second part of the study also reveals some deficits in terms of customer orientation. Although the value analysis work plan has sufficient interfaces and points of contact for supplementary instruments and is flexible enough for different tasks, the potential offered by value analysis does not appear to be fully exploited.
- Seidenberg, U.: Is information a production factor in its own right?, Siegen 1998, DBW-Depot 99-4-1, working paper, 38 pp. There is no question that information is essential for any kind of production. However, whether information is to be regarded as an independent production factor depends on the purposes such a factor is to serve and the resulting formal and content-related requirements that production factors and factor systems have to meet. The catalog of requirements set out in this article assumes that production factors as components of production theory models do not only have a systematization function limited to qualitative aspects of production theory analysis. Rather, factors should also support the goal of formulating quantitative input-output relationships in order to form the basis for cost-theoretical analyses. The requirements can be assigned to two groups: factor-related and factor system-related. According to the prevailing opinion, the first group includes the property of the relevant input object. However, this view cannot be followed due to the resulting difficulties, particularly in connection with the external factor of service production and the use of "evils" (e.g. waste) in production processes. An examination of the remaining factor-related requirements of homogeneity, quantifiability, price unambiguity and causa efficiens in relation to information leads to the conclusion that only the condition of causa efficiens can be regarded as fulfilled. The other three closely related requirements, which concern suitability for a quantitatively oriented analysis, are not met by an information factor due to the specific properties that characterize information. This results in two options with regard to the further development of business production and cost theory: Either one refrains from using a factor information until the measurability problems have been solved, or one weakens the requirements and thus limits oneself to qualitative models. The factor system-related requirements include the formal requirements of authenticity, completeness and freedom from overlap as well as the content-related requirements of general validity and flexibility. As the examination using the example of Gutenberg'sfactor system shows, information is implicitly and inseparably contained in several factor classes, so that a separate factor information inevitably leads to overlaps. Only previously non-integrated information input can form its own factor category information without overlapping, which is even mandatory due to the completeness criterion. These are, in particular, informational object factors and, if necessary, additional factors. Closing this (comparatively insignificant) gap in Gutenberg's factor system also supports the demand for general validity.
- Seidenberg, U.: Von Mitmenschen lernen - 12 Regeln von Karl R. Popper, lecture on the occasion of the graduation ceremony of the Department of Economics of the University of Siegen on November 5, 1998
- Seidenberg, U.: Trigger information in organizing, in: Zeitschrift Führung und Organisation (zfo), 59 (1990) 4, p. 256 - 264
- Seidenberg, U.: Auslöseinformationen im organisatorischen Gestaltungsprozeß - Voraussetzung einer flexiblen Organisation, Verlag Peter Lang, Frankfurt a. M./Bern/New York/Paris 1989, (ISBN 3-631-42058-7) The work examines on the basis of which information (triggers) organizational adaptation needs are recognized and related change or decision-making processes are or should be set in motion. Such trigger information is to be regarded as a basic prerequisite for the flexibility of the organizational system, which is dealt with in detail. In addition, the book contains a secondary analysis of empirical studies on triggering problems, the results of an empirical study by the author, a model of organizational triggering processes and an overview of instruments for obtaining and evaluating triggering information.