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  • BB

  • Design matters: on the impact of compliance program design on corporate ethics

    • Authors: Sto ¨ ber, Thomas;  Advisor: -;  Participants: Kotzian, Peter; Weißenberger, Barbara E. (2019)

  • Corporate scandals led to an increased interest in improving managers’ compliance. To this end, companies implement compliance programs including codes of conduct, compliance training, and whistle-blowing as core elements. Previous research has focused on the impact of the mere existence of one or several compliance program’s elements on compliance. Compliance programs differ substantially from company to company, for instance, in how training is organized and how the code looks like. This makes direct comparisons of the results challenging. Until now, it is poorly understood if and how the design of a compliance program’s element affects compliance. This paper investigates firstly, whether codes per se are an effective coreelement of compliance programs; secondly, whether the way a...
  • BB

  • Is data envelopment analysis a suitable tool for performance measurement and benchmarking in non-production contexts?

    • Authors: Wojcik, Victoria;  Advisor: -;  Participants: Dyckhoff, Harald; Clermont, Marcel (2019)

  • After 40 years of research with thousands of application-oriented scientific papers, empirical evidence that data envelopment analysis (DEA) has really improved the practice of performance measurement and benchmarking in real-life non-production contexts is rare. The main reason for this deficit may be that DEA is founded on the concepts of production theory such as production possibility set or returns to scale. These concepts can hardly be applied to pure multiple-criteria evaluation problems, which are often attempted to be solved using DEA. This paper systematically investigates strengths and weaknesses of DEA in the exemplary case of welfare evaluation using real data on 27 countries of the European Union. We analyze and explain the differences in the results of various frequent...
  • BB

  • Can hierarchy hold back the dynamics of selfreinforcing processes? A simulation study on path dependence in hierarchies

    • Authors: Petermann, Arne;  Advisor: -;  Participants: Schreyo ¨ gg, Georg; Fu ¨ rstenau, Daniel (2019)

  • Theories of path dependence and incumbent inertia assume that self-reinforcing mechanisms lead to highly persistent and eventually inefficient institutional solutions. The resulting lock-in is likely to threaten the viability of an organization. While path dependence theory was initially developed as a market-based approach, it has more recently been transferred to institutional settings and in particular to hierarchies. Some critics doubt, however, its applicability to hierarchical organizations. The major argument states that asymmetric power structures in organizations differ significantly from symmetric coordination modes and autonomous evolutionary dynamics. Hierarchical authority is assumed to be stronger and to rule out emergent autonomous dynamics. This reasoning raises the ...
  • BB

  • Framing Microgrid Design from a Business and Information Systems Engineering Perspective

    • Authors: Sachs, Thomas;  Advisor: -;  Participants: Gru ¨ ndler, Anna; Rusic, Milos; Fridgen, Gilbert (2019)

  • Microgrids are decentralized distribution networks that integrate distributed energy resources and balance energy generation and loads locally. The introduction of microgrids can help overcome the challenges of global energy systems. Despite this potential, the information systems domain has seen limited research on microgrids. This paper synthesizes research on elements of microgrids for electric energy. Interviewed experts maintain that technological microgrid solutions have been solidly developed; nevertheless, the lack of economic and business consideration is stalling their deployment.
  • BB

  • On Regularisation Methods for Analysis of High Dimensional Data

    • Authors: Sirimongkolkasem, Tanin;  Advisor: -;  Participants: Drikvandi, Reza (2019)

  • High dimensional data are rapidly growing in many domains due to the development of technological advances which helps collect data with a large number of variables to better understand a given phenomenon of interest. Particular examples appear in genomics, fMRI data analysis, large-scale healthcare analytics, text/image analysis and astronomy. In the last two decades regularisation approaches have become the methods of choice for analysing such high dimensional data. This paper aims to study the performance of regularisation methods, including the recently proposed method called de-biased lasso, for the analysis of high dimensional data under different sparse and non-sparse situations. Our investigation concerns prediction, parameter estimation and variable selection. We particula...
  • BB

  • De and re-levering betas with risky debt

    • Authors: Marko Volker Krause;  Advisor: -;  Participants: - (2019)

  • De- and re-levering betas is important to obtain discount rates for assets that are not publicly traded. A de- and re-levering procedure is around for the case of risk-free debt. The procedure for risky debt is much less clear even under very simplifying assumptions. In this paper, I concretize and extend the procedure for deand re-levering of betas for companies with risky debt. I derive procedures for different assumptions on the taxation of a cancellation of debt (COD) and for different assumptions regarding the distribution of losses on interest and principal payments. With a tax on the COD I obtain known results. However, without taxes on a COD, the distribution of losses on interest and principal payments matters and equations differ markedly for different assumptions on the a...
  • BB

  • Nghiên cứu dòng chảy qua tràn xả lũ Tà Rục - Khánh Hòa bằng mô hình dòng rối kết hợp trộn khí

    • Authors: Lê Thị Thu Hiền;  Advisor: -;  Participants: Dương Hoài Đức; Đinh Hải Đăng; Nguyễn Đức Phú (2020)

  • Các tác giả sử dụng mô hình dòng rối kết hợp trộn khí để mô phỏng dòng chảy qua cụm công trình tràn xả lũ, hố xói, kênh hạ lưu Tà Rục - Khánh Hòa. Những phân tích chi tiết các đặc điểm thủy lực của dòng phun tương tác với dòng chảy sau tràn như vận tốc, áp suất, tính ổn định dòng chảy thông qua tỷ lệ trộn khí được chỉ ra nhằm lựa chọn góc phun hợp lý nhất của tràn này.