@inproceedings{13456, author = {{Eggert, Andreas and Boehm, Eva and Akalan, Rodi and Gebauer, Heiko}}, title = {{{Service Growth by Acquisition – An Event Study}}}, year = {{2019}}, } @article{13457, author = {{Eggert, Andreas and Steinhoff, Lena and Witte, Carina}}, journal = {{Journal of Marketing}}, title = {{{Gift Purchases as Catalysts for Strengthening Customer–Brand Relationships}}}, year = {{2019}}, } @article{10103, abstract = {{We investigate the demographic characteristics, trading patterns, and performance of 465.926 brokerage accounts with respect to cryptocurrency trading. We find that cryptocurrency trading became increasingly popular across individuals of all different groups of age, gender, and trading patterns. Yet, men are more likely to engage in cryptocurrency trading, trade more frequently, and more speculative, respectively. As a result, men realize lower returns. Furthermore, we find that investors vary their trading patterns across different asset classes.}}, author = {{Hasso, Tim and Pelster, Matthias and Breitmayer, Bastian}}, journal = {{Journal of Behavioral and Experimental Finance}}, keywords = {{Cryptocurrencies Bitcoin Trading Investor returns Demographics}}, pages = {{64--74}}, publisher = {{Elsevier}}, title = {{{Who trades cryptocurrencies, how do they trade it, and how do they perform? Evidence from brokerage accounts}}}, doi = {{10.1016/j.jbef.2019.04.009}}, volume = {{23}}, year = {{2019}}, } @article{10279, abstract = {{Are cryptocurrency traders driven by a desire to invest in a new asset class to diversify their portfolio or are they merely seeking to increase their levels of risk? To answer this question, we use individual-level brokerage data and study their behavior in stock trading around the time they engage in their first cryptocurrency trade. We find that when engaging in cryptocurrency trading investors simultaneously increase their risk-seeking behavior in stock trading as they increase their trading intensity and use of leverage. The increase in risk-seeking in stocks is particularly pronounced when volatility in cryptocurrency returns is low, suggesting that their overall behavior is driven by excitement-seeking. }}, author = {{Pelster, Matthias and Breitmayer, Bastian and Hasso, Tim}}, issn = {{0165-1765}}, journal = {{Economics Letters}}, keywords = {{cryptocurrencies, bitcoin, investor, risk-seeking}}, pages = {{98--100}}, title = {{{Are cryptocurrency traders pioneers or just risk-seekers? evidence from brokerage accounts}}}, doi = {{10.1016/j.econlet.2019.06.013}}, volume = {{182}}, year = {{2019}}, } @phdthesis{10290, author = {{Gutt, Dominik}}, title = {{{Essays on Drivers and Economic Outcomes of Online-Reviews}}}, doi = {{10.17619/UNIPB/1-688}}, year = {{2019}}, } @techreport{10332, abstract = {{We analyze the incentives for retail bundling and the welfare effects of retail bundling in a decentralized distribution channel with two retailers and two monopolistic manufacturers. One manufacturer exclusively sells his good to one retailer, whereas the other manufacturer sells his good to both retailers. Thus, one retailer is a monopolist for one product but competes with the other retailer in the second product market. The two-product retailer has the option to bundle his goods or to sell them separately. We find that bundling aggravates the double marginalization problem for the bundling retailer. Nevertheless, when the retailers compete in prices, bundling can be more profitable than separate selling for the retailer as bundling softens the retail competition. The ultimate outcome depends on the manufacturers’ marginal costs. Given retail quantity competition, however, bundling is in no case the retailer’s best strategy. Furthermore, we show that profitable bundling reduces consumer and producer surplus in the equilibrium.}}, author = {{Heinzel, Joachim Maria Josef}}, keywords = {{retail bundling, leverage theory, double marginalization}}, publisher = {{CIE Working Paper Series}}, title = {{{Bundling in a Distribution Channel with Retail Competition}}}, year = {{2019}}, } @inproceedings{13585, author = {{Bohn, Nicolai and Kundisch, Dennis}}, booktitle = {{Proceedings of the 40th International Conference on Information Systems (ICIS)}}, location = {{Munich, Germany}}, title = {{{All Things Considered? – Technology Design Decision-making Characteristics in Digital Startups}}}, year = {{2019}}, } @inproceedings{13586, author = {{Seutter, Janina and Neumann, Jürgen}}, booktitle = {{Proceedings of the 40th International Conference on Information Systems (ICIS)}}, location = {{Munich, Germany}}, title = {{{Head over Feels? Differences in Online Rating Behavior for Utilitarian and Hedonic Service Aspects}}}, year = {{2019}}, } @inproceedings{13587, author = {{Gutt, Dominik and Neumann, Jürgen and Jabr, W. and Kundisch, Dennis}}, booktitle = {{Proceedings of the 40th International Conference on Information Systems (ICIS)}}, location = {{Munich, Germany}}, title = {{{The App Updating Conundrum: Implications of Platform’s Rating Resetting on Developers’ Behavior}}}, year = {{2019}}, } @article{13809, author = {{Kremer, H.-Hugo and Frehe-Halliwell, Petra}}, journal = {{BWP}}, pages = {{5}}, publisher = {{Franz Steiner Verlag}}, title = {{{Entwicklungsförderliche Gestaltung von Qualifizierungsbausteinen in der dualisierten Ausbildungsvorbereitung}}}, year = {{2019}}, } @inbook{13811, author = {{Kremer, H.-Hugo and Frehe-Halliwell, Petra}}, booktitle = {{Potenzialorientierte Förderung in den Fachdidaktiken}}, editor = {{Veber, Marcel and Benölken, Ralf and Pfitzner, Michael}}, pages = {{151 -- 170}}, publisher = {{Waxmann}}, title = {{{Eine Analyse ausbildungsvorbereitender Bildungsgänge}}}, volume = {{Band 7}}, year = {{2019}}, } @article{15075, author = {{Bünnings, Christian and Schmitz, Hendrik and Tauchmann, Harald and Ziebarth, Nicolas R.}}, issn = {{0022-4367}}, journal = {{Journal of Risk and Insurance}}, number = {{2}}, pages = {{415--449}}, title = {{{The Role of Prices Relative to Supplemental Benefits and Service Quality in Health Plan Choice}}}, doi = {{10.1111/jori.12219}}, volume = {{86}}, year = {{2019}}, } @inproceedings{8538, abstract = {{This paper explores Finnish, German and Swedish older adults’ perceptions of a future welfare service with increased use of welfare technologies, specifically care robots. The issues are the rapid digitalization and development of health and welfare technology, which presently is mainly technology driven (not need or user driven), and the demographic challenge. The aim of the study was to explore older adults’ perception of the future use of welfare technology or care robots. A qualitative approach with focus group discussions was employed, followed by thematic analysis. The results are presented in four overall themes: the impact on daily life for older adults and professional caregivers, codes of practice and terms of use, dissemination of information and knowledge, and conditions for successful implementation. There were significant differences in the informants’ attitudes toward and knowledge about care robots. However, the informants’ attitudes appeared to change during the focus groups and in general, became more positive. Authentic needs, which care robots could support, refer to independence, safety and security, and the ability to manage or ease daily life or working life. The results suggest that older adults, after receiving relevant information, were open to the idea of being supported by care robots in their daily lives.}}, author = {{Johansson-Pajala, Rose-Marie and Thommes, Kirsten and Hoppe, Julia Amelie and Tuisku, Outi and Hennala, Lea and Pekkarinen, Satu and Melkas, Helinä and Gustafsson, Christine }}, booktitle = {{HCII 2019}}, editor = {{Zhou, Jia and Salvendy, Gavriel}}, isbn = {{978-3-030-22011-2}}, keywords = {{Care robots, Older adults, Implementation, Information, Perceptions, Welfare technology}}, location = {{Orlando}}, pages = {{212--227}}, publisher = {{Springer}}, title = {{{Improved Knowledge Changes the Mindset: Older Adults’ Perceptions of Care Robots}}}, doi = {{10.1007/978-3-030-22012-9_16}}, volume = {{11592}}, year = {{2019}}, } @article{4562, abstract = {{Employing main and sector-specific investment-grade CDS indices from the North American and European CDS market and performing mean-variance out-of-sample analyses for conservative and aggressive investors over the period from 2006 to 2014, this paper analyzes portfolio benefits of adding corporate CDS indices to a traditional financial portfolio consisting of stock and sovereign bond indices. As a baseline result, we initially find an increase in portfolio (downside) risk-diversification when adding CDS indices, which is observed irrespective of both CDS markets, investor-types and different sub-periods, including the global financial crisis and European sovereign debt crisis. In addition, the analysis reveals higher portfolio excess returns and performance in CDS index portfolios, however, these effects clearly differ between markets, investor-types and sub-periods. Overall, portfolio benefits of adding CDS indices mainly result from the fact that institutional investors replace sovereign bond indices rather than stock indices by CDS indices due to better risk-return characteristics. Our baseline findings remain robust under a variety of robustness checks. Results from sensitivity analyses provide further important implications for institutional investors with a strategic focus on a long-term conservative portfolio management.}}, author = {{Hippert, Benjamin and Uhde, André and Wengerek, Sascha Tobias}}, journal = {{Review of Derivatives Research }}, keywords = {{Corporate credit default swap indices, Mean-variance asset allocation, Out-of-sample portfolio optimization, Portfolio risk-diversification, Portfolio performance evaluation}}, number = {{2}}, pages = {{203--259}}, title = {{{Portfolio Benefits of Adding Corporate Credit Default Swap Indices: Evidence from North America and Europe}}}, doi = {{https://doi.org/10.1007/s11147-018-9148-8}}, volume = {{22}}, year = {{2019}}, } @inproceedings{17096, abstract = {{Augmented Reality (AR) technologies have evolved rapidly over the last years, particularly with regard to user interfaces, input devices, and cameras used in mobile devices for object and gesture recognition. While early AR systems relied on pre-defined trigger images or QR code markers, modern AR applications leverage machine learning techniques to identify objects in their physical environments. So far, only few empirical studies have investigated AR's potential for supporting learning and task assistance using such marker-less AR. In order to address this research gap, we implemented an AR application (app)with the aim to analyze the effectiveness of marker-less AR applied in a mundane setting which can be used for on-the-job training and more formal educational settings. The results of our laboratory experiment show that while participants working with AR needed significantly more time to fulfill the given task, the participants who were supported by AR learned significantly more.}}, author = {{Sommerauer, Peter and Müller, Oliver and Maxim, Leonard and Østman, Nils}}, booktitle = {{International Conference on Wirtschaftsinformatik}}, title = {{{The Effect of Marker-less Augmented Reality on Task and Learning Performance}}}, year = {{2019}}, } @inproceedings{8519, author = {{Jenert, Tobias and Brahm , Taiga}}, location = {{Aachen}}, title = {{{Fostering pre-service economics teachers´ reflection on their attitudes towards the discipline}}}, year = {{2019}}, } @techreport{36004, abstract = {{Employing a unique sample of 2,849 tariff imposition announcements by and against the United States (U.S.) over the period from 2018 to 2019, this study analyzes the impact of recent tariff announcements on share prices from 859 U.S. companies. We provide evidence for negative (cumulative) average abnormal stock returns due to tariff announcements during a symmetric three-day event window. We suggest that stock market investors expect adverse impacts of tariff impositions, e.g. a decrease in the companies' future cash flows and a threat of retaliation. The negative wealth effects are observed irrespective of whether the Trump administration announces safeguard tariffs to protect domestic firms or a retaliation is declared by foreign countries. Moreover, building several subsamples, we find that the adverse impact is mostly driven by announcements involving China and is associated with a variety of sector, tariff, trade and firm characteristics. }}, author = {{Wengerek, Sascha Tobias and Uhde, André}}, keywords = {{event study, international relations, protectionism, strategic trade policy, tariffs, trade conflict}}, publisher = {{Paderborn University}}, title = {{{Share price reactions to tariff imposition announcements in the Trump era – An event study of the trade conflict}}}, year = {{2019}}, } @article{47917, abstract = {{ Companies disclosing negative aspects in sustainability reports often employ legitimation strategies to present mishaps in a favorable light. In incentivized experiments, we find that nonprofessional investors divest from companies with a negative sustainability-related incident, and that symbolic legitimation (which only evasively explains a negative incident) is not a strong enough signal to counter this divestment behavior. Even substantial legitimation (which reports on measures and behavioral change) mitigates the divestment decisions only if the company reports on concrete remediation actions in morally charged situations, such as social or environmental incidents. We elaborate these results in light of signaling and screening theory, and suggest the conceptual extension of “costly signals” to what we call “valuable signals.” We argue that valuable signals need be not only costly for the sender from an economic perspective but also perceived as appropriate by the receiver from a noneconomic perspective. }}, author = {{Hahn, Rüdiger and Reimsbach, Daniel and Kotzian, Peter and Feder, Madeleine and Weißenberger, Barbara E.}}, issn = {{0007-6503}}, journal = {{Business & Society}}, keywords = {{Social Sciences (miscellaneous), Business, Management and Accounting (miscellaneous)}}, number = {{4}}, pages = {{943--978}}, publisher = {{SAGE Publications}}, title = {{{Legitimation Strategies as Valuable Signals in Nonfinancial Reporting? Effects on Investor Decision-Making}}}, doi = {{10.1177/0007650319872495}}, volume = {{60}}, year = {{2019}}, } @article{49098, author = {{Krebs, Benjamin and Izsak, L. and Kabst, Rüdiger}}, journal = {{PERSONALquartely}}, title = {{{Corporate Entrepreneurship: HR als Treiber und Begleiter des Wandels}}}, volume = {{4}}, year = {{2019}}, } @inbook{18906, author = {{Schneider, Martin}}, booktitle = {{Handbuch Gestaltung digitaler und vernetzter Arbeitswelten}}, editor = {{Maier, Günter W. and Engels, Gregor and Steffen, Eckhard}}, isbn = {{978-3-662-52898-3}}, pages = {{303--322}}, publisher = {{Springer}}, title = {{{Personalwirtschaft}}}, year = {{2019}}, }