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26. April 2017

Christian Reintjes presents his research at Operations Research in Engineering

In March 2017, Christian Reintjes, scholar of the SME Graduate School, presented his research results on the topic „Beam structure Optimization for Additive Manufacturing“ as part of the workshop Operations Research in Engineering.


The reserach team headed by professor Dr. Ulf Lorenz (University of Siegen, institute of technology management) organised the workshop in conjunction with the Technical University of Darmstadt (special research project 805), the university of Duisburg-Essen and the department for the cooperation with medium-sized companies („Siegener Mittelstandsinstitut“).

It is the aim of technical Operations Research to establish quantitative methods for the synthesis of technical systems in engineering sciences. Mathematical optimization is well known in economics under the name of Operations Research. Technical Operations Reserach (TOR) covers much more than using mathematical modeling and solution algorithms in order to optimize technical systems. Another important subject is the evaluation of new technologies. Therefore, technology management is playing a major role in TOR. As an interdisciplinary science, TOR bridges the gap between mechanical engineering, computer science, mathematics and business studies. As a interface between science and industry, it is the aim of the workshop to build an interdisciplinary research netowrk.

The current progress in construction industry indicates that there is a huge interest to use generative design, or in general, optimization models, for developing products with highly complex geometries. It is the desire to use computational forces in form of optimization programs and to combine them with the design experience of engineers. Using both, it is possible to generate construction proposals beyond human abilities. The problem is that the conventional manufacturing techniques, like milling, turning or casting, are just not able to produce such complex structures. Arriving at this point additive manufacturing becomes important because it enables us to manufacture these extremely complex structures including undercuts or hollow spaces, provided by the optimization program.

For this reason Christian Reintjes developed and presented a linear optimization model to describe static load cases in relation to framework strucutres. By using a graph network it will be possible to reproduce the assembly space of an additive manufacturing system. The model describes any number of transmitted forces into the framework structure which are working against the forces being exerted by the assumed bearings. The model determines independently where and which capacities are needed at a particular position within the assembly space, whereas it can choose from a given quantitiy of connecting elements (e.g truss girders). The aim of the beam structure optimization for additive manufacturing is to reduce material and improve the field of lightweight construction, with the aim of saving costs overall.


Christian Reintjes B.Sc.
Universität Siegen SME Graduate School – Fast-Track PhD
E-Mail: christian.reintjes@student.uni-siegen.de

18. January 2017

Second Ring Lecture

The second ring lecture of the SME Graduate School took place on January 18th 2017. The workshop speakers included Prof. Ulf Lorenz (Technology Management), Prof. Sebastian G. Kessing (Public Economics) and Jun.-Prof. Alexander Vossen (Entrepreneurship in Context). Each professor presented the current development status of a topic of his research group. In short 30-minute presentations, the current state in SME research and relevant neighbouring fields have been introduced. Each of the presentations has been followed by a 30-minute discussion.

The opening presentation that day was held by Prof. Ulf Lorenz on Technical Operations Research (hereinafter TOR). It is the aim of TOR to establish quantitative methods for the synthesis of technical systems in engineering sciences. Mathematical optimization is well known in economics under the name of Operations Research (OR). With the example “the optimal design of a booster station” he showed that TOR covers much more than using mathematical modeling and solution algorithms in order to optimize technical systems. Another important subject is the evaluation of new technologies. Therefore, technology management is playing a major role in TOR. As an interdisciplinary science, TOR bridges the gap between mechanical engineering, computer science, mathematics and business studies.

discourse Prof. Lorenz discourse Prof. Kessing

After a short break and an inspiring discussion, Prof. Sebastian G. Kessing proceeded with two topics from the field of public economics. As a first step he presented the project local corporate taxes and start-up behaviour followed by the project pass-through of local corporate taxes for consumer prices. It was shown there are severel effects of local corporate taxes on incentives to start a busniess. An extensive data set, for a period of 13 years, was presented of purchases of fast-moving consumer goods by 30.000 households. The key question being answered was who bears the burden of taxes levied on firm profits. In this context capitalists, workers and consumer are potential contributors.

discourse Prof. Vossen

The third – and last – presentation was held by Jun.-Prof. Alexander Vossen whose scientific interests are innovation and entrepreunership for creative products. He showed users favor proposals with an atypical categorical identity, however they dislike proposals that employ an atypical narrative identity, based on a dataset of 2’705 entrepreneurial product proposals by video game developers.

Once again, the event was a complete success, since very interesting discussion circles were formed, whereby representatives from a wide range of fields could present oneself and their research results. The next ring lecture will take place on January 25th 2017.

13. December 2016

Visitors from Azerbaijan and the Topic of Peer Reviewing

The SME Graduate School met on the 13th of December for the monthly research colloquium. At our meeting three postdoctoral researchers from the Azerbaijan State University of Economics attended. One of our guests, Ragif Gasimov (PhD in Economics), opened the colloquium with a presentation about his PhD project where he will perform research on Human Resource Management in higher education institutions of Azerbaijan. Afterwards, Dr. Christian Reuter and Dr. Sohaib Hassan gave an overall view on the conduct of peer reviews. We learned that peer reviews are a method to ensure the quality of contributions, especially papers, for scientific conferences or journals and are used in cases of funding research projects. Our coordinators also informed us about the different kinds of peer reviews. For instance, an often used type is the double-blind review, whereby neither the author nor the reviewer know each other, so that an unbiased review is the result. Other types are the single-blind and open reviews. Besides we discussed pros and cons of peer reviews and their process. So it takes several months until all reviews are written and it cannot be guaranteed that the reviewers just represent their own point of view. At the end we talked about our plans for 2017. In January, our ring lecture will start with short presentations of the supervising professors and discussions afterwards. At the end of January, we will also have a workshop with Prof. Dr. David Audretsch (Indiana University).

ragifGasimov Logo_SME_3
17. November 2016

Florian Neitzert presents his research at the McKinsey/FIRM Innovation Platform

In November 2016, Florian Neitzert, scholar of the SME Graduate School, together with Professor Michael Torben Menk of University of Siegen presented their findings on the topic “Design of Capital Floors in the light of the Basel Trinity” in relation to the current developments of the Basel Accords at the McKinsey/FIRM Innovation Platform in Frankfurt am Main.


The research team headed by junior professor Dr. Michael Torben Menk, a professor of business administration and associate member of the Risk Governance Research Group in Siegen, was invited to the 25th Risk Management Innovation Platform organized by the McKinsey & Company and the Frankfurt Institute for Risk Management and Regulation (FIRM) at the stately Villa Merton (Union International Club) by Dr. Gerhard Schröck, a partner of McKinsey & Company.

Primary aim of the renowned, biannual conference is to present, develop and possibly implement innovative concepts for the current issues pertaining to bank and risk management. The interdisciplinary discussion bridges the collaboration gap between the leading decision makers of the financial industry and academia. The presentation on the “Design of Capital floors in the light of the Basel Trinity“ by the researchers focused on the revision of the minimum equity capital, which is set to be adopted in 2018. An implementation of the framework “Basel IV” in general, and therefore the disproportionately strong burden of regional institutes, would lead to a massive increase in regulatory capital requirements and hence, SME Graduate scholar Neitzert added that this would be the worst case scenario for the bank-based corporate financing of small and medium sized companies.

With their contribution, the two originally Hessian researchers joined a range of highly distinguished speakers including Dirk Jäger (Managing Director of the Federal Association of German Banks) and Dr. Tom Wilson (CRO Allianz SE), the keynote speaker who described the changing tasks of a Chief Risk Officer in the past decades and deliberated on whether this position would be more strongly impacted by regulatory influences in the future. The dinner at the end of the session presented further networking opportunities. Finally, the two researchers later thanked Dr. Gerhard Schröck, representative for all those who contributed to the event, for his invitation as well as the excellent organization and await the next Innovation Platform with interest.


Florian Neitzert B.Sc.
Universität Siegen SME Graduate School – Fast-Track PhD
E-Mail: florian.neitzert@uni-siegen.de

24. September 2016

Kick-Off Meeting of the SME Graduate School

The 23rd of September 2016 was the kick-off meeting of the Graduate School SME “Sustainable Managing Entrepreneurs” with 11 students of various fields of study at the University of Siegen. Founded in 2015 by Prof. Dr. Petra Moog and Prof. Dr. Friederike Welter, the graduate school was established to combine Master and Doctoral courses enabling highly motivated students to shorten their Ph.D. studies while maintaining the high standards and requirements necessary to achieve a doctoral title.

The first full-day workshop was used to not only introduce the students to each other and their coordinators, but also to form a team and bond together. Lead by Dr. Sohaib S. Hassan and Dr. Christian Reuter, the students were introduced to the program, opportunities and challenges which await them on their adopted career path. With 11 faculty advisors, 11 students, 2 directors, 2 coordinators and over 5 different nationalities involved, the diversity of the research fields and the variety of the combined knowledge are a promising foundation for interdisciplinary SME research. This “pool” of knowledge and the close interaction of the parties involved will also be used in the future to share information and is one of the main advantages of the program.

Kick-Off Meeting of the SME Graduate School

Each student was asked to present his field of research, his intended contribution to the graduate school and the named research stream. Feedback and guidance was given by the coordinators and the other participants of the meeting. After a communal lunch and a short photo session, the workshop continued with a creative and open discussion about the needs and offers of the coordinators and students as well as the determination of regular meetings.