Research Seminar (Management)
Research Seminar (Management)
In the Research Seminar (Management) talks are mainly held by outside speakers. BiGSEM students (Profile Management) are required to attend the seminar during the semester.
- Winter Term 2024-2025
Wednesday, October 16 2024, 14:00 in room U3-140
Prof. Dr. Rosa G. González Ramírez (Universidad de los Andes, Chile)
Analyzing the operations in a multipurpose port terminal: a case study of DPW San Antonio, Chile.Abstract:
In this talk, some results of the current collaboration with the multipurpose port terminal DPW San Antonio in Chile will be presented under the scope of a research grant that aims to provide decision support systems to aid the planning decisions of port managers. The main operations and policies for berth allocation, capacity planning, and storage space policies will be discussed, emphasizing differences with specialized terminals. Although the analysis focuses on containers, other challenges are present. We will briefly discuss some of the main disruptions the port faces and then describe the proposed mathematical models for capacity planning (or workload assignment) and the storage space allocation at the yard. Further challenges/opportunities for research extensions will also be discussed.
Thursday, November 14 2024, 14:00 in room U3-140
Prof. Dr. Stefan Helber (Institute of Production Management, Leibniz University Hannover)
Allocation of dynamic inductive charging infrastructures on airport apronsAbstract:
In the attempt to reduce the CO2 footprint of the aviation sector, airport ground vehicles such as passenger buses are increasingly being electrified, hence requiring potentially large batteries and charging stations as well as long charging downtimes. As a technological alternative to conductive charging of those vehicles, we consider the dynamic inductive charging technology, with which the vehicle's batteries can be charged wirelessly while the vehicle is in motion. The features of the airport aprons and their special traffic flows make this technology particularly attractive. However, if this technology were to be used, a difficult spatial allocation problem of its technical components would have to be solved. We describe this strategic planning task, develop alternative models to represent the underlying allocation problem and report numerical results on the solvability of the different modeling variants and the performance of a specific heuristic algorithm.
Wednesday, December 11 2024, 14:00 in room U3-140
Dr. Katharina Teschke (Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research and Helmholtz Institute for Functional Marine Biodiversity at the University Oldenburg)
Planning marine protected areas under the CCAMLR regime: The case of the Weddell SeaAbstract:
The Global Biodiversity Framework sets an ambitious "30×30" conservation target, aiming to protect 30% of the Earth’s land and sea through designated protected areas. However, we're still falling short, with ocean protection currently at just 8.2%. Most existing marine protected areas (MPAs) are small-scale and primarily within national jurisdictions, leaving much work to be done. In international waters, several initiatives are underway to establish large-scale MPAs, particularly in the Southern Ocean under the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR).One of these initiatives is the Weddell Sea MPA Phase 1 (WSMPA P1), initiated in 2013 and spearheaded by Germany under the EU's leadership. The WSMPA P1 aims to conserve one of the world’s last pristine marine areas, known for its vulnerable ecosystems and unique biodiversity, while also serving as a tool for enhancing the region's resilience to climate change. Over the years, the WSMPA P1 proposal has garnered "best science currently available" endorsements from the CCAMLR Scientific Committee and increasing support from CCAMLR Member States. By 2023, ten co-sponsors had backed the EU's proposal, but unanimous adoption remains elusive, with some member states opposing the need for MPAs.
In presenting the WSMPA P1 initiative, I will walk through the planning steps involved in developing an MPA in the high seas of the Southern Ocean under the CCAMLR regime. At the end of my talk, I will provide an outlook on the current situation regarding the establishment of CCAMLR MPAs and show that best scientific practices may not be sufficient to achieve the consensus and political momentum ultimately required for the designation of MPAs in the Southern Ocean.
- Summer Term 2024
Tuesday, June 18, starting at 2pm, in U3-140
Ralf Wagner
Professor of Sustainable Marketing, School of Economics and Management, University of KasselTitle: Intra-Brand Image Confusion – Confusional Effects of Assortment Width and Product Differentiation
Abstract: This presentation introduces the concept of intra-brand image confusion (IBIC) covering its components and consequences. Complementing the conceptualization empirical evidence from the automotive industry and the market for smart phones will be presented. Explorative factor analyses were conducted in order to assess the components of IBIC. Structural equation modeling reveals the extent and consequences of IBIC. Multiple regressions were conducted to further explore non-linear response at the sub-domain and higher-order construct level. The results confirm and solidify previous results on the relevance of the construct of IBIC. This study supports the relevance of intra-brand image confusion’s three components. A novel contribution arises from the fact that customers with a moderate involvement level are more confused than people with lower involvement levels. A U-shaped response indicates that lower involved prospective customers are at higher risk of a confusion by too broad assortments. Brand managers are well advised to pay strong attention to the structure of an assortment and to sub-brands to prevent the occurrence of an IBIC.
The talk will be on-site in U3-140. In addition, it is planned to stream the talk via Zoom. Participation should be possible by using the following credentials: https://uni-bielefeld.zoom-x.de/j/66353636480?pwd=ajlYUGh0MWxLTXcvUUVXQWVldElJdz09 (Meeting-ID: 663 5363 6480, Passwort: 305532).
Wednesday, May 23 2024, 2-3 pm in room U3-140
Prof. Dr. Winfried Steiner
Institut für Wirtschaftswissenschaft – Abteilung für BWL und Marketing Technische Universität ClausthalTitle: Deriving optimal pricing policies from store-level sales data
Abstract: We combine nonparametric price response modeling and dynamic pricing. In particular, we model sales response for fast-moving consumer goods sold by a physical retailer using a Bayesian semiparametric approach and incorporate the price of the previous period as well as further time-dependent covariates. All nonlinear effects including the one-period lagged price dynamics are modeled via P-splines, and embedding the semiparametric model into a Hierarchical Bayesian framework enables the estimation of nonlinear heterogeneous (i.e., store-specific) immediate and lagged price effects. The nonlinear heterogeneous model specification is used for price optimization and allows the derivation of optimal price paths of brands for individual stores of retailers. In an empirical study, we demonstrate that our proposed model can provide higher expected profits compared to competing benchmark models, while at the same time not seriously suffering from boundary problems for optimized prices and sales quantities. Optimal pricing policies for brands are determined by a discrete dynamic programming algorithm.
Wednesday, May 15 2024, 14:00-15:30 in room U3-140
Prof. Dr. Paul Schrader, Direktor des Instituts für das Recht intelligenter Techniksysteme (RiT) an der Fakultät für Rechtswissenschaften
"Rechtliche Rahmenbedingungen bzw. deren Entwicklung im Kontext von Smart Products / Smart Services"- Winter Term 2023-2024
Information on dates and presenters will be announced later.
Prof. Peter Limbach organizes the seminar in this semester.
16.01.2024, starting at 2 pm in U3-140
The talk will be given by Tobias Bauckloh from the University of Cologne
Title: „ESG ratings and stock price informativeness“ (Environment, Social, Governance)
13.12.2023, starting at 4 pm in U3-140
The talk will be given by Dirk Sliwka, a highly regarded professor from University of Cologne:
Title: Supervisor Monitoring and Human Capital Investment – A Field Experiment (Paper mit Leonhard Grabe)
Abstract:
We study a reduction in employee monitoring in a field experiment with 2.425 employees from a large service organization. Employees are supposed to take part in regular skill assessments and have regular meetings with their supervisors to discuss their training needs. In both the treatment and control group employees are encouraged to make proposals for training measures before the meetings. Employees in the treatment group are told not to reveal the outcomes of the skill assessments and supervisors are explicitly told to focus on the suggested training proposals instead. We find that this reduction in monitoring significantly reduces assessment participation and human capital investments (trainings booked). Moreover, we find strong evidence for the role of employee’s image concerns as a driver of behavior. Post-experimental survey outcomes also show a significant reduction in employee job satisfaction, supervisor feedback, and perceived supervisor support for learning.- Summer Term 2023
03.05.2023 (2-3 pm): BiGSEM Seminar - in U3-140
Talk by Prof. Tobias Schäfers (TH OWL & Copenhagen University)
Title: To be continued… Consumer reactions to unfinished teasers for digital contentAbstract:
To preview digital content and arouse consumers’ interest, online providers often use short teasers designed in an unfinished form, such that the teaser begins a new sentence but does not finish it. The goal of such teasers is to create curiosity and trigger consumption of the advertised content. However, this research reveals that consumers’ reactions to unfinished teasers are not always positive. The results from six experimental studies show that for paid content, consumers react negatively to unfinished teasers. This effect reverses for free content, in that unfinished teasers lead to more consumption. We explain this reversal by showing that the barrier associated with paid content (i.e., payment requirement) activates consumers’ persuasion knowledge and suppresses any positive curiosity-induced effects, which does not occur when content is available for free. These findings call into question existing managerial practices and offer novel insights into the complexity of consumers’ reactions to prevalent advertising techniques in digital marketplaces.
10.05.2023 (Wednesday), 13:30-14:45 in Room U3-140
Talk by Rob Britton (Adjunct Professor of Marketing at the Georgetown University & practitioner with 22 years of experience in the airline industry)
Title: Airline Pricing and Revenue Management: How It Really Works
26.05.2023 (11-12 am): BiGSEM Seminar - online (Zoom)
Talk by Prof. Sabine Köszegi (Vienna Technical University)
Title: Algorithmic (Decision) Systems: Why Human Autonomy is at StakeThe respective Zoom link is
https://uni-bielefeld.zoom.us/j/66112377262?pwd=Q0E3QXhRZG1uTGpJQTFiWUR0QmlxUT09Abstract:
For more than 50 years, humans have been using model- and data-based support systems in decision-making with the hope that system-supported decisions are not only better, more objective, and fairer (i.e., more efficient and less biased). With data-based Artificial Intelligence systems, this hope is revived. However, the delegation of tasks and decision-making to automated decision systems is accompanied by the assignment and attribution of (social) agency to these systems. We will discuss how role perceptions, expectations, and attribution of agency may change for human actors and cause diffusion of accountability, over-trust in automated systems, and reduced autonomy and self-efficacy of human actors. We will examine how automated decision systems impact the autonomy of humans and what requirements are to be placed on automated decision systems in order to protect individuals and society.
27.06.2023 (11-12 am): BiGSEM Seminar - in U3-140
Talk by Prof. Dennis Kundisch (Paderborn University)
Title: Updating at the Expense of Demand? The Case of Platform AppsAuthors: Wael Jabr, Dominik Gutt, Jürgen Neumann, Dennis Kundisch
Abstract: For products that undergo frequent changes, online reviews about prior versions become less informative. Digital platforms hosting those products, therefore, implement governance mechanisms that ensure the continued relevancy of posted reviews. One such mechanism in the context of apps conceals the review history with each app update, ensuring that highly visible online reputational signals such as average rating and review tally are based solely on reviews relevant to the latest release. While the relevancy of the reputational signals is ensured by such a mechanism, it may have adverse and unequal effects, potentially depressing the demand of high reputation apps and providing low reputation ones an unwarranted fresh start. Our paper investigates such a governance mechanism, while it was implemented by a main platform in the app market, to study its effects on app demand and the implications of updating. Using an instrumental variable approach that exploits the release of maintenance updates in a focal app's category, our results show nuanced and partly asymmetrical impacts of app updating on future app downloads across apps in the top 500 charts. Top-ranked free "superstar apps" benefit from updating. For "non-superstar apps", paid ones take a big hit with the effect primarily driven by high-priced non-superstar apps, while free ones suffer only if their prior reputation was high, with concealing their review history after an app update. Our results help developers understand the implications of software updating and thus adjust their innovation strategies, and platforms make informed governance choices.