@book{DrummScheuermannWeidner2024, author = {Drumm, Christian and Scheuermann, Bernd and Weidner, Stefan}, title = {Introduction to SAP S/4HANA® : The official companion book based on model company Global Bike-for learning, teaching, and training}, publisher = {Espresso Tutorials}, address = {Gleichen}, isbn = {9783960122685}, pages = {619 Seiten}, year = {2024}, abstract = {This easy-to-understand introduction to SAP S/4HANA guides you through the central processes in sales, purchasing and procurement, finance, production, and warehouse management using the model company Global Bike. Familiarize yourself with the basics of business administration, the relevant organizational data, master data, and transactional data, as well as a selection of core business processes in SAP. Using practical examples and tutorials, you will soon become an SAP S/4HANA professional! Tutorials and exercises for beginners, advanced users, and experts make it easy for you to practice your new knowledge. The prerequisite for this book is access to an SAP S/4HANA client with Global Bike version 4.1. - Business fundamentals and processes in the SAP system - Sales, purchasing and procurement, production, finance, and warehouse management - Tutorials at different qualification levels, exercises, and recap of case studies - Includes extensive download material for students, lecturers, and professors}, language = {en} } @article{BruksleChwallekKrastina2023, author = {Bruksle, Ieva and Chwallek, Constanze and Krastina, Anzelika}, title = {Strengthening sustainability in entrepreneurship education - implications for shifting entrepreneurial thinking towards sustainability at universities}, series = {ACTA PROSPERITATIS}, volume = {14}, journal = {ACTA PROSPERITATIS}, number = {1}, publisher = {Sciendo}, issn = {1691-6077}, doi = {10.37804/1691-6077-2023-14-37-48}, pages = {37 -- 48}, year = {2023}, abstract = {By developing innovative solutions to social and environmental problems, sustainable ventures carry greatpotential. Entrepreneurship which focuses especially on new venture creation can be developed through education anduniversities, in particular, are called upon to provide an impetus for social change. But social innovations are associatedwith certain hurdles, which are related to the multi-dimensionality, i.e. the tension between creating social,environmental and economic value and dealing with a multiplicity of stakeholders. The already complex field ofentrepreneurship education has to face these challenges. This paper, therefore, aims to identify starting points for theintegration of sustainability into entrepreneurship education. To pursue this goal experiences from three differentproject initiatives between the partner universities: Lapland University of Applied Sciences, FH Aachen University ofApplied Sciences and Turiba University are reflected and findings are systematically condensed into recommendationsfor education on sustainable entrepreneurship.}, language = {en} } @inproceedings{KohlFreyerKraemeretal.2023, author = {Kohl, Philipp and Freyer, Nils and Kr{\"a}mer, Yoka and Werth, Henri and Wolf, Steffen and Kraft, Bodo and Meinecke, Matthias and Z{\"u}ndorf, Albert}, title = {ALE: a simulation-based active learning evaluation framework for the parameter-driven comparison of query strategies for NLP}, series = {Deep Learning Theory and Applications. DeLTA 2023. Communications in Computer and Information Science}, booktitle = {Deep Learning Theory and Applications. DeLTA 2023. Communications in Computer and Information Science}, editor = {Conte, Donatello and Fred, Ana and Gusikhin, Oleg and Sansone, Carlo}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-39058-6 (Print)}, doi = {978-3-031-39059-3}, pages = {235 -- 253}, year = {2023}, abstract = {Supervised machine learning and deep learning require a large amount of labeled data, which data scientists obtain in a manual, and time-consuming annotation process. To mitigate this challenge, Active Learning (AL) proposes promising data points to annotators they annotate next instead of a subsequent or random sample. This method is supposed to save annotation effort while maintaining model performance. However, practitioners face many AL strategies for different tasks and need an empirical basis to choose between them. Surveys categorize AL strategies into taxonomies without performance indications. Presentations of novel AL strategies compare the performance to a small subset of strategies. Our contribution addresses the empirical basis by introducing a reproducible active learning evaluation (ALE) framework for the comparative evaluation of AL strategies in NLP. The framework allows the implementation of AL strategies with low effort and a fair data-driven comparison through defining and tracking experiment parameters (e.g., initial dataset size, number of data points per query step, and the budget). ALE helps practitioners to make more informed decisions, and researchers can focus on developing new, effective AL strategies and deriving best practices for specific use cases. With best practices, practitioners can lower their annotation costs. We present a case study to illustrate how to use the framework.}, language = {en} } @inproceedings{FreyerThewesMeinecke2023, author = {Freyer, Nils and Thewes, Dustin and Meinecke, Matthias}, title = {GUIDO: a hybrid approach to guideline discovery \& ordering from natural language texts}, series = {Proceedings of the 12th International Conference on Data Science, Technology and Applications DATA - Volume 1}, booktitle = {Proceedings of the 12th International Conference on Data Science, Technology and Applications DATA - Volume 1}, editor = {Gusikhin, Oleg and Hammoudi, Slimane and Cuzzocrea, Alfredo}, isbn = {978-989-758-664-4}, issn = {2184-285X}, doi = {10.5220/0012084400003541}, pages = {335 -- 342}, year = {2023}, abstract = {Extracting workflow nets from textual descriptions can be used to simplify guidelines or formalize textual descriptions of formal processes like business processes and algorithms. The task of manually extracting processes, however, requires domain expertise and effort. While automatic process model extraction is desirable, annotating texts with formalized process models is expensive. Therefore, there are only a few machine-learning-based extraction approaches. Rule-based approaches, in turn, require domain specificity to work well and can rarely distinguish relevant and irrelevant information in textual descriptions. In this paper, we present GUIDO, a hybrid approach to the process model extraction task that first, classifies sentences regarding their relevance to the process model, using a BERT-based sentence classifier, and second, extracts a process model from the sentences classified as relevant, using dependency parsing. The presented approach achieves significantly better resul ts than a pure rule-based approach. GUIDO achieves an average behavioral similarity score of 0.93. Still, in comparison to purely machine-learning-based approaches, the annotation costs stay low.}, language = {en} } @inproceedings{EggertWeber2023, author = {Eggert, Mathias and Weber, Jannik}, title = {What drives the purchase decision in Instagram stores?}, series = {ECIS 2023 Research Papers}, booktitle = {ECIS 2023 Research Papers}, pages = {1 -- 17}, year = {2023}, abstract = {The popularity of social media and particularly Instagram grows steadily. People use the different platforms to share pictures as well as videos and to communicate with friends. The potential of social media platforms is also being used for marketing purposes and for selling products. While for Facebook and other online social media platforms the purchase decision factors are investigated several times, Instagram stores remain mainly unattended so far. The present research work closes this gap and sheds light into decisive factors for purchasing products offered in Instagram stores. A theoretical research model, which contains selected constructs that are assumed to have a significant influence on Instagram user´s purchase intention, is developed. The hypotheses are evaluated by applying structural equation modelling on survey data containing 127 relevant participants. The results of the study reveal that 'trust', 'personal recommendation', and 'usability' significantly influences user's buying intention in Instagram stores.}, language = {en} } @article{EggertKling2023, author = {Eggert, Mathias and Kling, Rene}, title = {How to distribute charging requests of electronic vehicles? A reservation-based approach}, series = {International Journal of Intelligent Transportation Systems Research}, volume = {21}, journal = {International Journal of Intelligent Transportation Systems Research}, number = {2023}, publisher = {Springer}, address = {Berlin, Heidelberg, New York}, issn = {1868-8659}, doi = {10.1007/s13177-023-00367-z}, pages = {437 -- 460}, year = {2023}, abstract = {The number of electronic vehicles increase steadily while the space for extending the charging infrastructure is limited. In particular in urban areas, where parking spaces in attractive areas are famous, opportunities to setup new charging stations is very limited. This leads to an overload of some very attractive charging stations and an underutilization of less attractive ones. Against this background, the paper at hand presents the design of an e-vehicle reservation system that aims at distributing the utilization of the charging infrastructure, particularly in urban areas. By applying a design science approach, the requirements for a reservation-based utilization approach are elicited and a model for a suitable distribution approach and its instantiation are developed. The artefact is evaluated by simulating the distribution effects based on data of real charging station utilizations.}, language = {en} } @incollection{EggertZaehlWolfetal.2023, author = {Eggert, Mathias and Z{\"a}hl, Philipp M. and Wolf, Martin R. and Haase, Martin}, title = {Applying leaderboards for quality improvement in software development projects}, series = {Software Engineering for Games in Serious Contexts}, booktitle = {Software Engineering for Games in Serious Contexts}, editor = {Cooper, Kendra M.L. and Bucchiarone, Antonio}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-33337-8 (Print)}, doi = {10.1007/978-3-031-33338-5_11}, pages = {243 -- 263}, year = {2023}, abstract = {Software development projects often fail because of insufficient code quality. It is now well documented that the task of testing software, for example, is perceived as uninteresting and rather boring, leading to poor software quality and major challenges to software development companies. One promising approach to increase the motivation for considering software quality is the use of gamification. Initial research works already investigated the effects of gamification on software developers and come to promising. Nevertheless, a lack of results from field experiments exists, which motivates the chapter at hand. By conducting a gamification experiment with five student software projects and by interviewing the project members, the chapter provides insights into the changing programming behavior of information systems students when confronted with a leaderboard. The results reveal a motivational effect as well as a reduction of code smells.}, language = {en} } @incollection{FreyerKempt2023, author = {Freyer, Nils and Kempt, Hendrik}, title = {AI-DSS in healthcare and their power over health-insecure collectives}, series = {Justice in global health}, booktitle = {Justice in global health}, editor = {Bhakuni, Himani and Miotto, Lucas}, publisher = {Routledge}, address = {London}, isbn = {9781003399933}, doi = {10.4324/9781003399933-4}, pages = {38 -- 55}, year = {2023}, abstract = {AI-based systems are nearing ubiquity not only in everyday low-stakes activities but also in medical procedures. To protect patients and physicians alike, explainability requirements have been proposed for the operation of AI-based decision support systems (AI-DSS), which adds hurdles to the productive use of AI in clinical contexts. This raises two questions: Who decides these requirements? And how should access to AI-DSS be provided to communities that reject these standards (particularly when such communities are expert-scarce)? This chapter investigates a dilemma that emerges from the implementation of global AI governance. While rejecting global AI governance limits the ability to help communities in need, global AI governance risks undermining and subjecting health-insecure communities to the force of the neo-colonial world order. For this, this chapter first surveys the current landscape of AI governance and introduces the approach of relational egalitarianism as key to (global health) justice. To discuss the two horns of the referred dilemma, the core power imbalances faced by health-insecure collectives (HICs) are examined. The chapter argues that only strong demands of a dual strategy towards health-secure collectives can both remedy the immediate needs of HICs and enable them to become healthcare independent.}, language = {en} } @article{EmhardtJarodzkaBrandGruweletal.2022, author = {Emhardt, Selina N. and Jarodzka, Halszka and Brand-Gruwel, Saskia and Drumm, Christian and Niehorster, Diederick C. and van Gog, Tamara}, title = {What is my teacher talking about? Effects of displaying the teacher's gaze and mouse cursor cues in video lectures on students' learning}, series = {Journal of Cognitive Psychology}, journal = {Journal of Cognitive Psychology}, publisher = {Routledge, Taylor \& Francis Group}, address = {Abingdon}, issn = {2044-5911}, doi = {10.1080/20445911.2022.2080831}, pages = {1 -- 19}, year = {2022}, abstract = {Eye movement modelling examples (EMME) are instructional videos that display a teacher's eye movements as "gaze cursor" (e.g. a moving dot) superimposed on the learning task. This study investigated if previous findings on the beneficial effects of EMME would extend to online lecture videos and compared the effects of displaying the teacher's gaze cursor with displaying the more traditional mouse cursor as a tool to guide learners' attention. Novices (N = 124) studied a pre-recorded video lecture on how to model business processes in a 2 (mouse cursor absent/present) × 2 (gaze cursor absent/present) between-subjects design. Unexpectedly, we did not find significant effects of the presence of gaze or mouse cursors on mental effort and learning. However, participants who watched videos with the gaze cursor found it easier to follow the teacher. Overall, participants responded positively to the gaze cursor, especially when the mouse cursor was not displayed in the video.}, language = {en} } @inproceedings{EggertDyong2022, author = {Eggert, Mathias and Dyong, Julian}, title = {Applying process mining in small and medium sized IT enterprises - challenges and guidelines}, series = {International Conference on Business Process Management (BPM 2022)}, booktitle = {International Conference on Business Process Management (BPM 2022)}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-16103-2}, doi = {10.1007/978-3-031-16103-2_11}, pages = {125 -- 142}, year = {2022}, abstract = {Process mining gets more and more attention even outside large enterprises and can be a major benefit for small and medium sized enterprises (SMEs) to gain competitive advantages. Applying process mining is challenging, particularly for SMEs because they have less resources and process maturity. So far, IS researchers analyzed process mining challenges with a focus on larger companies. This paper investigates the application of process mining by means of a case study and sheds light into the particular challenges of an IT SME. The results reveal 13 SME process mining challenges and seven guidelines to address them. In this way, the paper contributes to the understanding of process mining application in SME and shows similarities and differences to larger companies.}, language = {en} } @inproceedings{ZaehlBiewendtWolfetal.2022, author = {Z{\"a}hl, Philipp M. and Biewendt, Marcel and Wolf, Martin and Eggert, Mathias}, title = {Requirements for Competence Developing Games in the Environment of SE Competence Development}, series = {Angewandte Forschung in der Wirtschaftsinformatik 2022}, booktitle = {Angewandte Forschung in der Wirtschaftsinformatik 2022}, publisher = {GITO}, address = {Berlin}, isbn = {978-3-95545-409-8}, doi = {10.30844/AKWI_2022_05}, pages = {73 -- 88}, year = {2022}, abstract = {Many of today's factors make software development more and more complex, such as time pressure, new technologies, IT security risks, et cetera. Thus, a good preparation of current as well as future software developers in terms of a good software engineering education becomes progressively important. As current research shows, Competence Developing Games (CDGs) and Serious Games can offer a potential solution. This paper identifies the necessary requirements for CDGs to be conducive in principle, but especially in software engineering (SE) education. For this purpose, the current state of research was summarized in the context of a literature review. Afterwards, some of the identified requirements as well as some additional requirements were evaluated by a survey in terms of subjective relevance.}, language = {en} } @inproceedings{EggertKriska2022, author = {Eggert, Mathias and Kriska, Melina}, title = {Gamification for software development processes - relevant affordances and design principles}, series = {Proceedings of the 55th Hawaii International Conference on System Sciences}, booktitle = {Proceedings of the 55th Hawaii International Conference on System Sciences}, publisher = {HICSS Publishing}, address = {Honolulu}, isbn = {978-0-9981331-5-7}, doi = {10.24251/HICSS.2022.200}, pages = {1614 -- 1623}, year = {2022}, abstract = {A Gamified Information System (GIS) implements game concepts and elements, such as affordances and game design principles to motivate people. Based on the idea to develop a GIS to increase the motivation of software developers to perform software quality tasks, the research work at hand aims at investigating relevant requirements from that target group. Therefore, 14 interviews with software development experts are conducted and analyzed. According to the results, software developers prefer the affordances points, narrative storytelling in a multiplayer and a round-based setting. Furthermore, six design principles for the development of a GIS are derived.}, language = {en} } @article{MuellerSeginWeigandetal.2022, author = {Mueller, Tobias and Segin, Alexander and Weigand, Christoph and Schmitt, Robert H.}, title = {Feature selection for measurement models}, series = {International journal of quality \& reliability management}, journal = {International journal of quality \& reliability management}, number = {Vol. ahead-of-print, No. ahead-of-print.}, publisher = {Emerald Group Publishing Limited}, address = {Bingley}, issn = {0265-671X}, doi = {10.1108/IJQRM-07-2021-0245}, year = {2022}, abstract = {Purpose In the determination of the measurement uncertainty, the GUM procedure requires the building of a measurement model that establishes a functional relationship between the measurand and all influencing quantities. Since the effort of modelling as well as quantifying the measurement uncertainties depend on the number of influencing quantities considered, the aim of this study is to determine relevant influencing quantities and to remove irrelevant ones from the dataset. Design/methodology/approach In this work, it was investigated whether the effort of modelling for the determination of measurement uncertainty can be reduced by the use of feature selection (FS) methods. For this purpose, 9 different FS methods were tested on 16 artificial test datasets, whose properties (number of data points, number of features, complexity, features with low influence and redundant features) were varied via a design of experiments. Findings Based on a success metric, the stability, universality and complexity of the method, two FS methods could be identified that reliably identify relevant and irrelevant influencing quantities for a measurement model. Originality/value For the first time, FS methods were applied to datasets with properties of classical measurement processes. The simulation-based results serve as a basis for further research in the field of FS for measurement models. The identified algorithms will be applied to real measurement processes in the future.}, language = {en} } @article{KemptFreyerNagel2022, author = {Kempt, Hendrik and Freyer, Nils and Nagel, Saskia K.}, title = {Justice and the normative standards of explainability in healthcare}, series = {Philosophy \& Technology}, volume = {35}, journal = {Philosophy \& Technology}, number = {Article number: 100}, publisher = {Springer Nature}, address = {Berlin}, doi = {10.1007/s13347-022-00598-0}, pages = {1 -- 19}, year = {2022}, abstract = {Providing healthcare services frequently involves cognitively demanding tasks, including diagnoses and analyses as well as complex decisions about treatments and therapy. From a global perspective, ethically significant inequalities exist between regions where the expert knowledge required for these tasks is scarce or abundant. One possible strategy to diminish such inequalities and increase healthcare opportunities in expert-scarce settings is to provide healthcare solutions involving digital technologies that do not necessarily require the presence of a human expert, e.g., in the form of artificial intelligent decision-support systems (AI-DSS). Such algorithmic decision-making, however, is mostly developed in resource- and expert-abundant settings to support healthcare experts in their work. As a practical consequence, the normative standards and requirements for such algorithmic decision-making in healthcare require the technology to be at least as explainable as the decisions made by the experts themselves. The goal of providing healthcare in settings where resources and expertise are scarce might come with a normative pull to lower the normative standards of using digital technologies in order to provide at least some healthcare in the first place. We scrutinize this tendency to lower standards in particular settings from a normative perspective, distinguish between different types of absolute and relative, local and global standards of explainability, and conclude by defending an ambitious and practicable standard of local relative explainability.}, language = {en} } @inproceedings{SchulteEggert2021, author = {Schulte, Maximilian and Eggert, Mathias}, title = {Predicting hourly bitcoin prices based on long short-term memory neural networks}, series = {Proceedings of the International Conference on Wirtschaftsinformatik (WI) 2021}, booktitle = {Proceedings of the International Conference on Wirtschaftsinformatik (WI) 2021}, pages = {16 Seiten}, year = {2021}, abstract = {Bitcoin is a cryptocurrency and is considered a high-risk asset class whose price changes are difficult to predict. Current research focusses on daily price movements with a limited number of predictors. The paper at hand aims at identifying measurable indicators for Bitcoin price movement s and the development of a suitable forecasting model for hourly changes. The paper provides three research contributions. First, a set of significant indicators for predicting the Bitcoin price is identified. Second, the results of a trained Long Short-term Memory (LSTM) neural network that predicts price changes on an hourly basis is presented and compared with other algorithms. Third, the results foster discussions of the applicability of neural nets for stock price predictions. In total, 47 input features for a period of over 10 months could be retrieved to train a neural net that predicts the Bitcoin price movements with an error rate of 3.52 \%.}, language = {en} } @article{BerneckerBoyerGathmann2021, author = {Bernecker, Andreas and Boyer, Pierre C. and Gathmann, Christina}, title = {The Role of Electoral Incentives for Policy Innovation: Evidence from the US Welfare Reform}, series = {American Economic Journal: Economic Policy}, volume = {13}, journal = {American Economic Journal: Economic Policy}, number = {2}, publisher = {American Economic Association}, address = {Nashville, Tenn.}, issn = {1945-774X}, doi = {10.1257/pol.20190690}, pages = {26 -- 57}, year = {2021}, language = {en} } @incollection{DiekmannEggert2021, author = {Diekmann, Julian and Eggert, Mathias}, title = {Is a Progressive Web App an Alternative for Native App Development?}, series = {3. Wissenschaftsforum: Digitale Transformation (WiFo21) (Lecture Notes in Informatics ; P-319)}, booktitle = {3. Wissenschaftsforum: Digitale Transformation (WiFo21) (Lecture Notes in Informatics ; P-319)}, publisher = {Gesellschaft f{\"u}r Informatik}, address = {Darmstadt}, isbn = {978-3-88579-713-5}, pages = {35 -- 48}, year = {2021}, abstract = {The existence of several mobile operating systems, such as Android and iOS, is a challenge for developers because the individual platforms are not compatible with each other and require separate app developments. For this reason, cross-platform approaches have become popular but lack in cloning the native behavior of the different operating systems. Out of the plenty cross-platform approaches, the progressive web app (PWA) approach is perceived as promising but needs further investigation. Therefore, the paper at hand aims at investigating whether PWAs are a suitable alternative for native apps by developing a PWA clone of an existing app. Two surveys are conducted in which potential users test and evaluate the PWA prototype with regard to its usability. The survey results indicate that PWAs have great potential, but cannot be treated as a general alternative to native apps. For guiding developers when and how to use PWAs, four design guidelines for the development of PWA-based apps are derived based on the results.}, language = {en} } @inproceedings{EggertStanke2020, author = {Eggert, Mathias and Stanke, Max-Alexander}, title = {Adoption of Integrated Voice Assistants in Health Care- Requirements and Design Guidelines}, series = {15th International Conference on Wirtschaftsinformatik, March 08-11, 2020 Potsdam, Germany}, booktitle = {15th International Conference on Wirtschaftsinformatik, March 08-11, 2020 Potsdam, Germany}, doi = {10.30844/wi_2020_k2-eggert}, pages = {1 -- 16}, year = {2020}, language = {en} } @article{EmhardtJarodzkaBrandGruweletal.2020, author = {Emhardt, Selina and Jarodzka, Halszka and Brand-Gruwel, Saskia and Drumm, Christian and Gog, Tamara van}, title = {Introducing eye movement modeling examples for programming education and the role of teacher's didactic guidance}, series = {ETRA '20 Short Papers: ACM Symposium on Eye Tracking Research and Applications}, journal = {ETRA '20 Short Papers: ACM Symposium on Eye Tracking Research and Applications}, number = {Art. 52}, publisher = {ACM}, address = {New York}, doi = {10.1145/3379156.3391978}, pages = {1 -- 4}, year = {2020}, abstract = {In this article, we introduce how eye-tracking technology might become a promising tool to teach programming skills, such as debugging with 'Eye Movement Modeling Examples' (EMME). EMME are tutorial videos that visualize an expert's (e.g., a programming teacher's) eye movements during task performance to guide students' attention, e.g., as a moving dot or circle. We first introduce the general idea behind the EMME method and present studies that showed first promising results regarding the benefits of EMME to support programming education. However, we argue that the instructional design of EMME varies notably across them, as evidence-based guidelines on how to create effective EMME are often lacking. As an example, we present our ongoing research on the effects of different ways to instruct the EMME model prior to video creation. Finally, we highlight open questions for future investigations that could help improving the design of EMME for (programming) education.}, language = {en} } @inproceedings{EggertEdelbauer2020, author = {Eggert, Mathias and Edelbauer, Thomas Rudolf}, title = {Gamified Information Systems for Assisted Living Facilities - Relevant Design Guidelines, Affordances and Adoption Barriers}, series = {15th International Conference on Wirtschaftsinformatik, March 08-11, 2020 Potsdam, Germany}, booktitle = {15th International Conference on Wirtschaftsinformatik, March 08-11, 2020 Potsdam, Germany}, doi = {10.30844/wi_2020_f3-eggert}, pages = {1 -- 16}, year = {2020}, language = {en} } @article{DrummEmhardtKoketal.2020, author = {Drumm, Christian and Emhardt, Selina N. and Kok, Ellen M. and Jarodzka, Halzka and Brand-Gruwel, Saskia and van Gog, Tamara}, title = {How Experts Adapt Their Gaze Behavior When Modeling a Task to Novices}, series = {Cognitive science}, volume = {44}, journal = {Cognitive science}, number = {9}, publisher = {Wiley}, address = {Weinheim}, issn = {1551-6709}, doi = {10.1111/cogs.12893}, pages = {26}, year = {2020}, abstract = {Domain experts regularly teach novice students how to perform a task. This often requires them to adjust their behavior to the less knowledgeable audience and, hence, to behave in a more didactic manner. Eye movement modeling examples (EMMEs) are a contemporary educational tool for displaying experts' (natural or didactic) problem-solving behavior as well as their eye movements to learners. While research on expert-novice communication mainly focused on experts' changes in explicit, verbal communication behavior, it is as yet unclear whether and how exactly experts adjust their nonverbal behavior. This study first investigated whether and how experts change their eye movements and mouse clicks (that are displayed in EMMEs) when they perform a task naturally versus teach a task didactically. Programming experts and novices initially debugged short computer codes in a natural manner. We first characterized experts' natural problem-solving behavior by contrasting it with that of novices. Then, we explored the changes in experts' behavior when being subsequently instructed to model their task solution didactically. Experts became more similar to novices on measures associated with experts' automatized processes (i.e., shorter fixation durations, fewer transitions between code and output per click on the run button when behaving didactically). This adaptation might make it easier for novices to follow or imitate the expert behavior. In contrast, experts became less similar to novices for measures associated with more strategic behavior (i.e., code reading linearity, clicks on run button) when behaving didactically.}, language = {en} } @incollection{GollandOhrtmann2020, author = {Golland, Alexander and Ohrtmann, Jan-Peter}, title = {Video surveillance: The supervisory authorities' view andrecent case law}, series = {Turning Point in Data Protection Law}, booktitle = {Turning Point in Data Protection Law}, publisher = {Nomos}, address = {Baden-Baden}, isbn = {978-3-8487-6909-4}, doi = {10.5771/9783748921561-175}, pages = {175 -- 178}, year = {2020}, language = {en} } @incollection{Golland2020, author = {Golland, Alexander}, title = {Struggling with users' consent: Economic approach to solve the issue of coupling}, series = {Turning Point in Data Protection Law}, booktitle = {Turning Point in Data Protection Law}, publisher = {Nomos}, address = {Baden-Baden}, isbn = {978-3-8487-6909-4}, doi = {10.5771/9783748921561-121}, pages = {121 -- 126}, year = {2020}, language = {en} } @article{EggertAlberts2020, author = {Eggert, Mathias and Alberts, Jens}, title = {Frontiers of business intelligence and analytics 3.0: a taxonomy-based literature review and research agenda}, series = {Business Research}, volume = {2020}, journal = {Business Research}, number = {13}, publisher = {Springer}, address = {Heidelberg}, issn = {2198-2627}, doi = {10.1007/s40685-020-00108-y}, pages = {685 -- 739}, year = {2020}, abstract = {Researching the field of business intelligence and analytics (BI \& A) has a long tradition within information systems research. Thereby, in each decade the rapid development of technologies opened new room for investigation. Since the early 1950s, the collection and analysis of structured data were the focus of interest, followed by unstructured data since the early 1990s. The third wave of BI \& A comprises unstructured and sensor data of mobile devices. The article at hand aims at drawing a comprehensive overview of the status quo in relevant BI \& A research of the current decade, focusing on the third wave of BI \& A. By this means, the paper's contribution is fourfold. First, a systematically developed taxonomy for BI \& A 3.0 research, containing seven dimensions and 40 characteristics, is presented. Second, the results of a structured literature review containing 75 full research papers are analyzed by applying the developed taxonomy. The analysis provides an overview on the status quo of BI \& A 3.0. Third, the results foster discussions on the predicted and observed developments in BI \& A research of the past decade. Fourth, research gaps of the third wave of BI \& A research are disclosed and concluded in a research agenda.}, language = {en} } @incollection{Eggert2019, author = {Eggert, Mathias}, title = {Big Data Research - How to Structure the Changes of the Past Decade?}, series = {The Art of Structuring}, booktitle = {The Art of Structuring}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-06234-7}, doi = {10.1007/978-3-030-06234-7_26}, pages = {271 -- 281}, year = {2019}, abstract = {In the past decade, many IS researchers focused on researching the phenomenon of Big Data. At the same time, the relevance of data protection gets more attention than ever before. In particular, since the enactment of the European General Data Protection Regulation in May 2018 Information Systems research should provide answers for protecting personal data. The article at hand presents a structuring framework for Big Data research outcome and the consideration of data protection. IS Researchers might use the framework in order to structure Big Data literature and to identify research gaps that should be addressed in the future.}, language = {en} } @inproceedings{Eggert2019, author = {Eggert, Mathias}, title = {Understanding the acceptance of smart home-based insurances}, series = {Proceedings of the 27th European Conference on Information Systems (ECIS), Stockholm \& Uppsala, Sweden, June 8-14, 2019}, booktitle = {Proceedings of the 27th European Conference on Information Systems (ECIS), Stockholm \& Uppsala, Sweden, June 8-14, 2019}, isbn = {978-1-7336325-0-8}, pages = {1 -- 15}, year = {2019}, language = {en} } @incollection{ErnhardtDrummvanGogetal.2019, author = {Ernhardt, Selina and Drumm, Christian and van Gog, Tamara and Brand-Gruwel, Saskia and Jarodzka, Halszka}, title = {Through the eyes of a programmer : a research project on how to foster programming education with eye-tracking technology}, series = {Tagungsband zur 32. AKWI-Jahrestagung vom 15.09.2019 bis 18.09.2019 an der Fachhochschule f{\"u}r Angewandte Wissenschaften Aachen}, booktitle = {Tagungsband zur 32. AKWI-Jahrestagung vom 15.09.2019 bis 18.09.2019 an der Fachhochschule f{\"u}r Angewandte Wissenschaften Aachen}, publisher = {Mana-Buch}, address = {Heide}, isbn = {978-3-944330-62-4}, pages = {42 -- 47}, year = {2019}, language = {en} } @article{BerneckerKlierSternetal.2018, author = {Bernecker, Andreas and Klier, Julia and Stern, Sebastian and Thiel, Lea}, title = {Sustaining high performance beyond public-sector pilot projects.}, number = {September 2018}, organization = {McKinsey\&Company}, year = {2018}, language = {en} } @techreport{BerneckerBoyerGathmann2018, type = {Working Paper}, author = {Bernecker, Andreas and Boyer, Pierre and Gathmann, Christina}, title = {The Role of Electoral Incentives for Policy Innovation: Evidence from the US Welfare Reform}, series = {CESifo Working Paper}, journal = {CESifo Working Paper}, number = {No. 6964}, organization = {CESifo Group Munich}, issn = {ISSN 2364-1428 (electronic version)}, pages = {60}, year = {2018}, language = {en} } @incollection{KrollLudwigs2017, author = {Kroll-Ludwigs, Kathrin}, title = {Names of individuals}, series = {European Encyclopedia of Private International Law}, booktitle = {European Encyclopedia of Private International Law}, publisher = {Edward Elgar Publishing}, address = {Cheltenham, UK}, isbn = {9781782547228}, year = {2017}, language = {en} } @incollection{KrollLudwigs2017, author = {Kroll-Ludwigs, Kathrin}, title = {Small Claims Regulation}, series = {European Encyclopedia of Private International Law}, booktitle = {European Encyclopedia of Private International Law}, publisher = {Edward Elgar Publishing}, address = {Cheltenham, UK}, isbn = {9781782547228}, year = {2017}, language = {en} } @inproceedings{FredebeulKrein2016, author = {Fredebeul-Krein, Markus}, title = {Towards trade facilitation via regulatory convergence: An analysis of the TTIP chapter on Electronic Communications}, series = {Regional ITS Conference of the International Telecommunications Society. Cambridge, United Kingdom, 7-9 September 2016}, booktitle = {Regional ITS Conference of the International Telecommunications Society. Cambridge, United Kingdom, 7-9 September 2016}, pages = {29 Seiten}, year = {2016}, abstract = {To give the exchange of goods and services between the European Union (EU) and the United States (U.S.) new momentum the two parties are currently negotiating the transatlantic free trade agreement Transatlantic Trade and Investment Partnership (TTIP). The aim is to create the largest free trade area in the world. The agreement, once entered into force, will oblige EU countries and the U.S. to further liberalize their markets. The negotiations on TTIP include a chapter on Electronic Communications/ Telecommunications. The challenge therein will be securing commitments for market access to Electronic Communications services. At the same time, these commitments must reflect the legitimate need for consumer protection issues. The need to reduce Electronic Communications-related non-tariff barriers to trade between the Parties is due to the fact that these markets are heavily regulated. Without transnational rules as to regulations national governments can abuse these regulations to deter the market entry by new (foreign) suppliers. Thus the free trade agreement TTIP affects in many respects regulatory provisions on and access to Electronic Communications markets. The objective of this paper is therefore to examine to what extend the regulatory principles for Electronic Communications markets envisaged under TTIP will result in trade facilitation and regulatory convergence between the EU and the U.S. As to this question the result of the analysis is that the chapter on Electronic Communications will be an important step towards facilitating trade in Electronic Communications services. At the same time some regulatory convergence will take place, but this convergence will not lead to a (full) harmonization of regulations. Rather the norm, also after TTIP negotiations will have been concluded successfully, will be mutual recognition of different regulatory regimes. Different regulations being the optimal policy response in different market settings will continue to exist. Moreover, it is very unlikely that such regulatory principles for the Electronic Communications sector are a vehicle for a race to the bottom in levels of consumer protection.}, language = {en} } @article{BeckerDelfmannDietrichetal.2016, author = {Becker, J{\"o}rg and Delfmann, Patrick and Dietrich, Hanns-Alexander and Steinhorst, Matthias and Eggert, Mathias}, title = {Business Process Compliance Checking — Applying and Evaluating a Generic Pattern Matching Approach for Conceptual Models in the Financial Sector}, series = {Information Systems Frontiers}, volume = {18}, journal = {Information Systems Frontiers}, number = {2}, publisher = {Springer}, address = {Berlin}, issn = {1572-9419}, doi = {10.1007/s10796-014-9529-y}, pages = {359 -- 405}, year = {2016}, abstract = {Given the strong increase in regulatory requirements for business processes the management of business process compliance becomes a more and more regarded field in IS research. Several methods have been developed to support compliance checking of conceptual models. However, their focus on distinct modeling languages and mostly linear (i.e., predecessor-successor related) compliance rules may hinder widespread adoption and application in practice. Furthermore, hardly any of them has been evaluated in a real-world setting. We address this issue by applying a generic pattern matching approach for conceptual models to business process compliance checking in the financial sector. It consists of a model query language, a search algorithm and a corresponding modelling tool prototype. It is (1) applicable for all graph-based conceptual modeling languages and (2) for different kinds of compliance rules. Furthermore, based on an applicability check, we (3) evaluate the approach in a financial industry project setting against its relevance for decision support of audit and compliance management tasks.}, language = {en} } @article{Bernecker2016, author = {Bernecker, Andreas}, title = {Divided we reform? Evidence from US welfare policies}, series = {Journal of Public Economics}, volume = {142}, journal = {Journal of Public Economics}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0047-2727}, doi = {10.1016/j.jpubeco.2016.08.003}, pages = {24 -- 38}, year = {2016}, abstract = {Divided government is often thought of as causing legislative deadlock. I investigate the link between divided government and economic reforms using a novel data set on welfare reforms in US states between 1978 and 2010. Panel data regressions show that, under divided government, a US state is around 25\% more likely to adopt a welfare reform than under unified government. Several robustness checks confirm this counter-intuitive finding. Case study evidence suggests an explanation based on policy competition between governor, senate, and house.}, language = {en} } @article{SchneiderTran2015, author = {Schneider, Felix and Tran, Duc Hung}, title = {On the relation between the fair value option and bid-ask spreads: descriptive evidence on the recognition of credit risk changes under IFRS}, series = {Journal of Business Economics}, volume = {85}, journal = {Journal of Business Economics}, number = {9}, publisher = {Springer}, address = {Berlin}, issn = {1861-8928}, doi = {10.1007/s11573-015-0776-2}, pages = {1049 -- 1081}, year = {2015}, language = {en} } @incollection{KrollLudwigs2015, author = {Kroll-Ludwigs, Kathrin}, title = {Art. 5 Rom III-Regulation (choice of applicable law by the parties)}, series = {Rome Regulations : commentary}, booktitle = {Rome Regulations : commentary}, editor = {Calliess, Gralf-Peter}, edition = {2nd ed.}, publisher = {Wolters Kluwer}, isbn = {9789041147547}, year = {2015}, language = {en} } @incollection{KrollLudwigs2015, author = {Kroll-Ludwigs, Kathrin}, title = {Art. 7 Rome III-Regulation (formal validity)}, series = {Rome Regulations : commentary}, booktitle = {Rome Regulations : commentary}, editor = {Colliess, Gralf-Peter}, edition = {2nd ed.}, publisher = {Wolters Kluwer}, isbn = {9789041147547}, year = {2015}, language = {en} } @article{KlettkeHomburgGell2015, author = {Klettke, Tanja and Homburg, Carsten and Gell, Sebastian}, title = {How to measure analyst forecast effort}, series = {European Accounting Review}, volume = {24}, journal = {European Accounting Review}, number = {1}, publisher = {Taylor \& Francis}, address = {London}, issn = {0963-8180}, doi = {10.1080/09638180.2014.909291}, pages = {129 -- 146}, year = {2015}, abstract = {We introduce a new way to measure the forecast effort that analysts devote to their earnings forecasts by measuring the analyst's general effort for all covered firms. While the commonly applied effort measure is based on analyst behaviour for one firm, our measure considers analyst behaviour for all covered firms. Our general effort measure captures additional information about analyst effort and thus can identify accurate forecasts. We emphasise the importance of investigating analyst behaviour in a larger context and argue that analysts who generally devote substantial forecast effort are also likely to devote substantial effort to a specific firm, even if this effort might not be captured by a firm-specific measure. Empirical results reveal that analysts who devote higher general forecast effort issue more accurate forecasts. Additional investigations show that analysts' career prospects improve with higher general forecast effort. Our measure improves on existing methods as it has higher explanatory power regarding differences in forecast accuracy than the commonly applied effort measure. Additionally, it can address research questions that cannot be examined with a firm-specific measure. It provides a simple but comprehensive way to identify accurate analysts.}, language = {en} } @article{Pietsch2015, author = {Pietsch, Wolfram}, title = {Augmenting voice of the customer analysis by analysis of belief}, series = {QFD-Forum}, journal = {QFD-Forum}, number = {30}, issn = {1431-6951}, pages = {1 -- 5}, year = {2015}, language = {en} } @article{GoedhuysJanzMohnen2014, author = {Goedhuys, Micheline and Janz, Norbert and Mohnen, Pierre}, title = {Knowledge-based productivity in "low-tech" industries: evidence from firms in developing countries}, series = {Industrial and corporate change}, volume = {23}, journal = {Industrial and corporate change}, number = {1}, publisher = {Oxford University Press}, address = {Oxford}, issn = {1464-3650 (E-Journal); 0960-6491 (Print)}, doi = {10.1093/icc/dtt006}, pages = {1 -- 23}, year = {2014}, abstract = {Using firm-level data from five developing countries—Brazil, Ecuador, South Africa, Tanzania, and Bangladesh—and three industries—food processing, textiles, and the garments and leather products—this article examines the importance of various sources of knowledge for explaining productivity and formally tests whether sector- or country-specific characteristics dominate these relationships. Knowledge sources driving productivity appear mainly sector specific. Also differences in the level of development affect the effectiveness of knowledge sources. In the food processing sector, firms with higher educated managers are more productive, and in least-developed countries, additionally those with technology licenses and imported machinery and equipment. In the capital-intensive textiles sector, productivity is higher in firms that conduct R\&D. In the garments and leather products sector, higher education of the managers, licensing, and R\&D raise productivity.}, language = {en} } @article{FredebeulKreinSteingroever2014, author = {Fredebeul-Krein, Markus and Steingr{\"o}ver, Markus}, title = {Wholesale broadband access to IPTV in an NGA environment : how to deal with it from a regulatory perspective?}, series = {Telecommunications Policy}, volume = {38}, journal = {Telecommunications Policy}, number = {3}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0308-5961 (Print)}, doi = {doi:10.1016/j.telpol.2013.04.002}, pages = {264 -- 277}, year = {2014}, language = {en} } @article{Tran2014, author = {Tran, Duc Hung}, title = {Multiple corporate governance attributes and the cost of capital - Evidence from Germany}, series = {The British Accounting Review}, volume = {46}, journal = {The British Accounting Review}, number = {2}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0890-8389}, doi = {https://doi.org/10.1016/j.bar.2014.02.003}, pages = {179 -- 197}, year = {2014}, abstract = {This paper investigates the extent to which corporate governance affects the cost of debt and equity capital of German exchange-listed companies. I examine corporate governance along three dimensions: financial information quality, ownership structure and board structure. The results suggest that firms with high levels of financial transparency and bonus compensations face lower cost of equity. In addition, block ownership is negatively related to firms' cost of equity when the blockholders are other firms, managers or founding-family members. Consistent with the conjecture that agency costs increase with firm size, I find significant cost of debt effects only in the largest German companies. Here, the creditors demand lower cost of debt from firms with block ownerships held by corporations or banks. My findings demonstrate that a uniform set of governance attributes is unlikely to satisfy suppliers of debt and equity capital equally.}, language = {en} } @article{Bernecker2014, author = {Bernecker, Andreas}, title = {Do politicians shirk when reelection is certain? Evidence from the German parliament}, series = {European Journal of Political Economy}, volume = {36}, journal = {European Journal of Political Economy}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0176-2680}, doi = {10.1016/j.ejpoleco.2014.07.001}, pages = {55 -- 70}, year = {2014}, abstract = {Does stiffer electoral competition reduce political shirking? For a micro-analysis of this question, I construct a new data set spanning the years 2005 to 2012 covering biographical and political information about German Members of Parliament (MPs), including their attendance rates in voting sessions. For the parliament elected in 2009, I show that indeed opposition party MPs who expect to face a close race in their district show significantly and relevantly lower absence rates in parliament beforehand. MPs of governing parties seem not to react significantly to electoral competition. These results are confirmed by an analysis of the parliament elected in 2005, by several robustness checks, and also by employing an instrumental variable strategy exploiting convenient peculiarities of the German electoral system. The study also shows how MPs elected via party lists react to different levels of electoral competition.}, language = {en} } @article{Bernecker2014, author = {Bernecker, Andreas}, title = {Divided Government and the Adoption of Economic Reforms}, series = {CESifo DICE Report - Journal for Institutional Comparison}, volume = {12}, journal = {CESifo DICE Report - Journal for Institutional Comparison}, number = {4}, publisher = {Ifo Institute for Economic Research}, address = {M{\"u}nchen}, issn = {1612-0663}, pages = {47 -- 52}, year = {2014}, language = {en} } @book{Bernecker2014, author = {Bernecker, Andreas}, title = {Essays in Empirical Political Economics}, pages = {XI, 174 S. : Ill., graph. Darst.}, year = {2014}, language = {en} } @inproceedings{FredebeulKreinSteingroever2013, author = {Fredebeul-Krein, Markus and Steingr{\"o}ver, Markus}, title = {Enhancing broadband development and internet usages for improving networks and services in APEC member economies: Bridging the digital divide}, series = {The 19th ITS Biennial Conference 2012 "Moving Forward with Future Technologies: Opening a Platform for All" 18 - 21 November 2012, Thailand}, booktitle = {The 19th ITS Biennial Conference 2012 "Moving Forward with Future Technologies: Opening a Platform for All" 18 - 21 November 2012, Thailand}, publisher = {ITS}, address = {Bangkok}, pages = {13 S.}, year = {2013}, language = {en} } @inproceedings{HerzwurmPietsch2013, author = {Herzwurm, Georg and Pietsch, Wolfram}, title = {Introduction of RePriCo'13}, series = {19th International Working Conference on Requirements Engineering: Foundation for Software Quality (REFSQ 2013) : proceedings of the REFSQ 2013 Workshops CreaRE, IWSPM, and RePriCo, the REFSQ 2013 Empirical Track (Empirical Live Experiment and Empirical Research Fair), the REFSQ 2013 Doctoral Symposium, and the REFSQ 2013 Poster Session. ICB-research report. No. 56}, booktitle = {19th International Working Conference on Requirements Engineering: Foundation for Software Quality (REFSQ 2013) : proceedings of the REFSQ 2013 Workshops CreaRE, IWSPM, and RePriCo, the REFSQ 2013 Empirical Track (Empirical Live Experiment and Empirical Research Fair), the REFSQ 2013 Doctoral Symposium, and the REFSQ 2013 Poster Session. ICB-research report. No. 56}, publisher = {Duisburg-Essen}, address = {Univ.}, issn = {ISSN 1860-2770 (Print ) ; ISSN 1866-5101 (Online)}, pages = {103 -- 105}, year = {2013}, language = {en} } @incollection{Pietsch2013, author = {Pietsch, Wolfram}, title = {A framework for strategic positioning of IT-products}, series = {Software business : from physical products to software services and solutions : 4th International Conference on Software Business, ICSOB 2013; Potsdam; Germany; 11 June 2013 through 14 June 2013. (Lecture notes in business information processing ; 150)}, booktitle = {Software business : from physical products to software services and solutions : 4th International Conference on Software Business, ICSOB 2013; Potsdam; Germany; 11 June 2013 through 14 June 2013. (Lecture notes in business information processing ; 150)}, publisher = {Springer}, address = {Berlin}, doi = {10.1007/978-3-642-39336-5_11}, pages = {102 -- 116}, year = {2013}, abstract = {IT Products are viewed and managed differently depending on the perspectives and the stage within the life cycle. A model is presented that integrates different perspectives and stages serving as an aid for the analysis of business models and focused positioning of IT-products. Four generic business models are analysed with regard to the product management function in general and the positioning field for IT-products specifically: off-the-shelf (license), license plus service, project, and system service (incl. cloud computing).}, language = {en} } @article{BeverungenEggertVoigtetal.2013, author = {Beverungen, Daniel and Eggert, Mathias and Voigt, Matthias and Rosemann, Michael}, title = {Augmenting Analytical CRM Strategies with Social BI}, series = {International Journal of Business Intelligence Research (IJBIR)}, volume = {4}, journal = {International Journal of Business Intelligence Research (IJBIR)}, number = {3}, publisher = {IGI Global}, address = {Hershey}, issn = {1947-3591}, doi = {10.4018/ijbir.2013070103}, pages = {32 -- 49}, year = {2013}, language = {en} } @article{EggertKnackstedtFleischeretal.2013, author = {Eggert, Mathias and Knackstedt, Ralf and Fleischer, Stefan and Becker, J{\"o}rg}, title = {The Potential of Configurative Reference Modeling for Business to Government Reporting - A Modeling Technique and its Evaluation}, series = {e-Service Journal}, volume = {9}, journal = {e-Service Journal}, number = {1}, publisher = {Indiana University Press}, address = {Bloomington}, issn = {1528-8234}, pages = {28 -- 59}, year = {2013}, language = {en} }