EBS Universität für Wirtschaft und Recht
  • Wiesbaden, Wiesbaden, Germany
Recent publications
The rise of the sharing economy represents a disruption for incumbent organizations, institutional regimes, and society at large, causing multiple actor groups to engage in institutional work to create, maintain, and disrupt institutions. While research has provided insights into the ways in which individual actors engage in institutional work, we still lack an understanding of the dynamics between actor groups and the institutional work battles they wage in the context of the emerging sharing economy. Drawing on an in-depth analysis of the discursive institutional work during the rise of Uber and Airbnb, as represented in the news media, we first provide new insights into which actors groups engage in institutional work and which rhetoric they utilize. We inductively distill 15 discursive strategies of institutional work related to seven institutional discourses. Moreover, enfolding extant literature, we derive a taxonomy of institutional work battles and introduce the concept of cross-countering—defined as efforts to weaken, oppose, or nullify opposing discursive institutional work. Altogether, our work provides novel insights on institutional work in the sharing economy, highlights the contested nature of institutional discourses and formalizes when such contestation fosters or hinders institutional change.
Smart technologies promise to enhance customer experience to new levels in next-generation retail stores. Offline retailers increasingly employ technology-enabled personalization (TEP) strategies to digitally enhance in-store customer experience. To send personalized messages to in-store customers, retailers can choose from two types of smart devices: customer-owned smartphones or retailer-owned immersive screens. Although these smart devices may largely determine customers’ experiences in future retail, research rarely addresses device-related determinants of the effectiveness of personalized messages in stores. Building on assemblage theory, the authors consider the role of these devices in influencing customer experience and eventually consumer shopping behavior. Through two experiments and a mediated moderation analysis, they investigate the interplay of personalized content and device technology in customers’ response to TEP. The results illustrate that consumers react differently to message content depending on the device through which it is conveyed; that is, personalized (standardized) messages are more effective on customer-owned smartphones (retailer-owned screens) because they become integrated into (remain separate from) the customer's extended self. Relational customer experiences, or the extent to which a customer feels positively connected to store assemblages, mediate the effect on shopping behavior. To build TEP strategies, retailers should therefore use smart devices integrated into customers’ extended selves.
We study a single-period multi-product inventory allocation problem with full downward substitution and monotone cost differences. The cost structure with monotone differences is more general than the additive cost structure usually assumed in literature. Using the notion of Monge sequences, we identify conditions under which the problem can be solved efficiently using greedy allocation. For problems that do not meet these conditions, we develop an efficient algorithm that solves the problem to optimality. For this specific problem, our algorithm has substantially lower computational complexity than existing efficient algorithms for the more general transportation problem; we numerically confirm this superior computational efficiency and illustrate the importance of using efficient algorithms at the allocation stage of the inventory management problem.
A testing principle is introduced that allows to combine evidence from N potentially correlated samples. It builds on a (weighted) sum of entities from the individual samples, which is fed into a self-normalizing variance ratio type statistic. Due to self-normalization the (autoco)variances within each sample as well as the cross-covariances between the samples melt into one scaling parameter that cancels from the ratios asymptotically. Tests constructed from this principle are hence robust with respect to cross-dependence without having to estimate any nuisance parameters. The weighting and the entities from the individual samples depend on the testing problem at hand. Two cases are discussed in detail. The first one are tests of restrictions on a parameter vector (e. g. testing restrictions on expected values), while the second one focusses on time series: panel integration tests (unit root as well as stationarity tests). The validity of the asymptotic theory in finite samples is established by means of simulation evidence.
Scholars have identified that interviewers prefer applicants who are both emotionally restrained and exuberant. To reconcile these inconsistent results, we investigated how the magnitude of applicants' expressed enthusiasm influences interviewer perceptions of job suitability. In two experimental studies with recruiters in China, we show that expressing intense as opposed to mild enthusiasm reduces applicants' chances to be perceived as suitable for the job (Study 1). We further demonstrate that expressions of intense enthusiasm do not always undermine their perceived job suitability but can also lead to a positive interview outcome. We find that the negative consequences of intense enthusiasm are explained by interviewer perceptions of decreased appropriateness, whereas the positive consequences are driven by interviewer perceptions of the applicant's attraction to the organization (PAAO; Study 2). We also report how interviewer trait information processing motivation (IPM) influences the way applicants expressing intense enthusiasm are evaluated. Only interviewers with low trait IPM interpret applicants' intense enthusiasm as less appropriate. We propose to incorporate the social signaling character of emotions in future theorizing and research on nonverbal communication in job interviews.
In the pharmaceutical industry, personalized medicine is increasingly replacing the traditional blockbuster drug concept. Personalized medicine consists of a targeted drug that is only prescribed if a companion diagnostic test detects the corresponding biomarker. This concept promises improved treatments of various diseases. However, personalized medicine also presents pharmaceutical firms with new challenges resulting from interdependencies in the drug and diagnostic test development processes. Although pharmaceutical firms generally benefit from competition among diagnostic firms, the threat of substitutes from competitors could cause diagnostic firms to step back from new product development in the first place, leading to lost revenues for the pharmaceutical firm. We consider a pharmaceutical firm that may inform two competing differentiated diagnostic firms about a drug under development, such that these firms can develop a corresponding diagnostic test. We show which diagnostic firm the pharmaceutical firm should inform first and how granting early exclusivity to a single diagnostic firm can maximize pharmaceutical profits from personalized medicine.
This study explores the discourse of social entrepreneurs and their audiences in pitch situations. Adopting a practice perspective on social entrepreneurship, we videotaped 49 pitches by social entrepreneurs at five different events in two incubators in Germany and Switzerland. Our analysis of the start-ups’ pitches and the audience’s questions and comments as well as of interview data elucidates the nuances of social and business discourse that social entrepreneurs and their audiences draw upon. Our analysis shows how many social entrepreneurs mobilize a discursive repertoire that is familiar to their business-oriented audience while others predominantly draw on a social discourse. We identify separating, mixing, and combining as key strategies that allow social entrepreneurs to dance between the two. We discuss how the intertextual reproduction of concepts, objects, and subject positions contains both enabling and constraining elements, which results in an ethical dilemma for social entrepreneurs: Should they re-package their social impact story in a business discourse to connect with their audience?
Despite an increasing scholarly interest in social enterprises, our understanding of the multifaceted nature of practice adoption in such hybrid organizations remains limited. A review of the literature on translation and practice adoption advances our understanding of the problems and challenges of social mission-driven organizations adopting managerial practices. In doing so, I suggest the translation of management practices to fit the specific context of social enterprises may not only alter the practice itself but also the beliefs of members regarding what their organization is and stands for.
W. hat keine Definitionslehre hinterlassen, auch nicht in dem schwachen Sinn des Wortes ›Lehre‹, in dem man ihm überhaupt eine solche zuschreiben kann, zu welchem Thema auch immer. Aber er hat, zu verschiedenen Zeiten, Reihen von Überlegungen angestellt, die durchaus breiteres philosophisches Interesse verdienen und, zumindest für seine eigenen Betrachtungen, auch von einigem Gewicht waren. Einige dieser Reihen beziehen sich mehr oder weniger ausdrücklich kritisch auf vorangehende, andere bringen neue Themen vor, unter anderem als Ergänzung zu schon Gesagtem.
Wenn W. sich richtig erinnert, dann war das, was ihm in seinem früheren Philosophieren »das meiste Kopfzerbrechen gemacht hat«, der »Teil der Untersuchung« »die allgemeine Form des Satzes und der Sprache betreffend « (PU 65). Die Logisch-Philosophische Abhandlung gibt als allgemeine Form des Satzes an: »Es verhält sich so und so« (TLP 4.5). Dies ist die allgemeine Form von Sätzen, die wahr oder falsch sind.
Zu den UN Sustainable Development Goals, die die Vereinten Nationen im Rahmen ihrer 2015 verabschiedeten Nachhaltigen Agenda 2030 ausgerufen haben, bekennen sich die öffentlichen Versicherer. Schon ihr Geschäftsmodell trägt zur Erreichung dieser Ziele bei – denn die Versicherer geben dem privaten und öffentlichen Leben Sicherheit, Risikoschutz und Vorsorge und sind so ein unverzichtbares Fundament wirtschaftlichen Handelns.
New digital technologies possess the potential to transform entrepreneurial processes, such as how entrepreneurs pursue opportunities and access funding and how they learn. How entrepreneurs learn may be transformed as digital technologies provide new spaces for learning, such as online communities. Online communities can gather thousands of participants and provide entrepreneurs with new opportunities for learning that are not limited by time, space, or social class. Yet, we know little about how entrepreneurs take advantage of the new digital opportunities of learning. To remedy this, we studied a large online community of entrepreneurs on Reddit (r/startups), where we qualitatively analyzed the top-voted 100 threads from 2018 to 2019 (10,277 comments in total). By drawing on coactive vicarious learning, a theory that describes how learning is socially constructed through discursive interactions, we outline how entrepreneurial learning is socially constructed through conversations, which are taking place in different micro-learning contexts. Through identifying distinct entrepreneurial learning conversations , we build new theory on entrepreneurial learning in online communities. Our theorizing contributes to (1) the growing research on how entrepreneurial learning is socially constructed in communities, (2) the current debate on knowledge creation in online communities, and (3) the knowledge on how coactive vicarious learning unfolds in communities. Plain English Summary When entrepreneurs go online to learn, new research shows how online communities provide entrepreneurs with diverse learning spaces for developing ideas, learning new skills, and coping with the uncertainties of being an entrepreneur. Entrepreneurs increasingly use social media for doing business, but can they also use it to learn about doing business? In this article, we investigate this question by studying an online community of entrepreneurs on Reddit called r/startups, in which entrepreneurs exchange experiences and help each other with questions and issues. We show that entrepreneurial learning is taking place in five forms of learning conversations, which are situated in four learning contexts that differ from each other, from a classroom with a student–teacher dynamic, a collab space where entrepreneurs collect ideas and develop new skills and knowledge, a club context in which they challenge each other, and a care context in which they can bring their fears and uncertainties. Our findings show how entrepreneurship practitioners can make use of online communities, encouraging teaching and policy to pay more attention to how entrepreneurs work digitally.
This study explores the effect of negative news about an organization on its sustainable supply chain management (SSCM) practices. We focus on how public reports about controversial business practices motivate a company to make adjustments so that environmental and social concerns are better included in its supply chain management practices. Using agenda-setting theory, we identify managerial commitment as an important factor in transmitting external media pressure. We analyse longitudinal data, ranging from 2002 through 2014 and collected for more than 700 US-based corporations. Our findings reveal that companies significantly increase SSCM after being the subject of negative news, particularly when management commitment to environmental sustainability and social welfare is high. Our findings should encourage supply chain decision makers to consider more broadly how external stakeholders view their global supply chain operations. Our research sheds light on negative news as an external factor; previous literature used media attention as anecdotal evidence and focused more on internal company factors. We contribute to research in SSCM by studying the mediation effect. It is essential that supply chain decision makers better apprehend the importance of negative news, management commitment, and SSCM and understand their role in influencing public opinion.
We study empirically whether the allocation of discretionary grants across Spanish regions is related to the number of swing voters and loyal voters of the ruling party. We estimate the number of swing and loyal voters from survey data. When estimating the number of swing voters, we account in a novel way for the two-dimensional ideological space and multiparty competition. We find that regions with more loyal voters of the ruling party received more grants per capita. Partisan alignment of regional governments also matters over a part of the studied period since the regions where the socialist party of the central government was a member of the regional government received more grants.
In this paper, we study the bias in interest rate projections of five central banks, namely the central banks of the Czech Republic, New Zealand, Norway, Sweden, and the USA. We examine whether central bank projections are based on an asymmetric loss function and report evidence that central banks perceive an overprojection of their longer-term interest rate forecasts as twice as costly as an underprojection of the same size. We find that forecast rationality is consistent with biased interest rate projections under the assumption of an asymmetric loss function, which contributes to explaining the behavior of the examined central banks and their forecasts.
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1,166 members
Emanuel V. Towfigh
  • Chair in Public Law, Empirical Legal Research and Law & Economics
Gerold Riempp
  • Chair of Information Systems
Ulrich Hommel
  • EBS Business School, Department of Finance
Nico Rottke
  • Finance, Accounting & Real Estate
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