Fachbereich Wirtschaftswissenschaften
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Verbraucherpolitik
(2023)
In recent years, eXtended Reality (XR) technology like Augmented Reality and Virtual Reality became both technically feasible as well as affordable which lead to a drastic demand of professionally designed and developed applications. However, this demand combined with a rapid pace of innovation revealed a lack of design tool support for professional interaction designers as well as a knowledge gap regarding their approaches and needs. To address this gap, this thesis engages with the work of professional XR interaction designers in a qualitative research into XR interaction design approach. Therefore, this thesis applies two complementary lenses stemming from scientific design and social practice theory discourses to observe, describe, analyze, and understand professional XR interaction designers' challenges and approaches with a focus on application prototyping.
The Peren Theorem
(2024)
The Peren-Clement Index
(2024)
Network Analysis Method
(2024)
Dynamic Programming
(2024)
Heuristic Methods
(2024)
Sequencing Problems
(2024)
Queueing Theory
(2024)
Linear Optimization
(2024)
The Decision Tree Procedure
(2024)
The art of nudging
(2023)
Do simple and subtle changes in the living and study environment improve the eating behaviour of students in an educational setting? This dissertation provides a not-so-simple answer to this simple question based on the outcomes of four studies that explore the effects and design of artwork nudges (specifically the artwork of Alberto Giacometti) on the eating behaviour of students by applying different research designs. Study 1 explores the effects of a Giacometti-like nudge (a more contemporary version of the original nudge) regarding the dietary behaviour of high school students in a controlled setting. Study 2 applies different artwork nudges within a virtual vignette setting to measure their effects on virtual meal choices made. Also, the degree to which individuals were aware of the nudge’s presence is included as an influential factor in nudge effectiveness. Study 3 assesses the susceptibility to nudges as measured with a questionnaire. Susceptibility to nudges is defined as nudgeability. Study 4 assesses the effects of the original Giacometti nudge in a real-world university cafeteria setting. Specifically, the immediate and sustained effects of the original Giacometti nudge on students’ meal purchases in the university cafeteria are considered. In addition, the role of awareness of the nudge’s presence as well as the acceptance of this specific nudge are discussed. The conclusion is drawn that the original Giacometti nudge should only be applied in an educational setting to improve healthy eating behaviour if the intended target groups and environment meet certain conditions. Artwork nudges in general should be applied only after rigorous testing of various types of different nudges and more research reflecting healthy eating in its entirety.
Statistik im Fokus
(2023)
Liebe Leserinnen und Leser!
(2023)
Dieses Buch beleuchtet den Online-Lebensmittelhandel in Deutschland aus Anbieter- und Kundenperspektive, leitet Zukunftsprognosen ab und zeigt Konsequenzen für Handel und Hersteller. Trotz des Aufwinds während der Corona-Pandemie bewegen sich die Umsätze im Online-Handel mit Lebensmitteln noch auf relativ niedrigem Niveau; die Entwicklung verläuft jedoch turbulent und wird kontrovers diskutiert. Dieses Buch beschreibt den Status quo und regt zu Diskussionen an. Es bietet eine systematische Analyse einschlägiger Studien sowie aktuelle Erkenntnisse auf Basis qualitativer Interviews mit Experten aus Handel, Industrie und Wissenschaft. (Verlagsangaben)
Smart heating systems are one of the core components of smart homes. A large portion of domestic energy consumption is derived from HVAC (heating, ventilation and air conditioning) systems, making them a relevant topic of the efforts to support an energy transition in private housing. For that reason, the technology has attracted attention both from the academic and the industry communities. User interfaces of smart heating systems have evolved from simple adjusting knobs to advanced data visualization interfaces, that allow for more advanced setting such as time tables and status information. With the advent of AI, we are interested in exploring how the interfaces will be evolving to build the connection between user needs and underlying AI system. Hence, this paper is targeted to provide early design implications towards an AI-based user interface for smart heating systems.
AI systems pose unknown challenges for designers, policymakers, and users which aggravates the assessment of potential harms and outcomes. Although understanding risks is a requirement for building trust in technology, users are often excluded from legal assessments and explanations of AI hazards. To address this issue we conducted three focus groups with 18 participants in total and discussed the European proposal for a legal framework for AI. Based on this, we aim to build a (conceptual) model that guides policymakers, designers, and researchers in understanding users’ risk perception of AI systems. In this paper, we provide selected examples based on our preliminary results. Moreover, we argue for the benefits of such a perspective.
When dialogues with voice assistants (VAs) fall apart, users often become confused or even frustrated. To address these issues and related privacy concerns, Amazon recently introduced a feature allowing Alexa users to inquire about why it behaved in a certain way. But how do users perceive this new feature? In this paper, we present preliminary results from research conducted as part of a three-year project involving 33 German households. This project utilized interviews, fieldwork, and co-design workshops to identify common unexpected behaviors of VAs, as well as users’ needs and expectations for explanations. Our findings show that, contrary to its intended purpose, the new feature actually exacerbates user confusion and frustration instead of clarifying Alexa's behavior. We argue that such voice interactions should be characterized as explanatory dialogs that account for VA’s unexpected behavior by providing interpretable information and prompting users to take action to improve their current and future interactions.
Project Management
(2023)
Companies are increasingly developing into dynamic and project-oriented organizations. Globalization, innovations and organizational dynamics require more and more projects, and thus a more project-oriented corporate organization and management. As a rule, managers as well as employees already work parallel to their line function in projects or completely from project to project.
At the same time, cross-company and especially international value chains lead to the cooperation of cross-departamental and intercultural teams. For this, the specialists and executives need above all knowledge and experience in project management and the corresponding concepts as well as in the special form of cooperation, team development and communication. Because the most problems in project management are not caused by project goals and methods, but by the many different problem-solving behavior and attitudes, e.g. between engineers and business people, different departments or the different country cultures. The international IT project specialist Tom DeMarco puts it in a nutshell (in Peopleware - Productive Projects and Teams: The major problems of our work are not so much technological as socio-logical in nature. In terms of content here, in contrast to traditional professional textbooks, not only the technologies are priority, but also the social and intercultural aspects of project work.
The book is aimed equally at students of all disciplines with a focus on managerial and project-related work as well as practitioners and entrepreneurs in all private business sectors as well as in NGOs, public projects or PPPs as public-private partnership.
Datenmodellierung
(2023)
Diese Formelsammlung enthält und erklärt finanzmathematische Formeln innerhalb finanzwirtschaftlicher Zusammenhänge, wie sie in den Wirtschaftswissenschaften und in der wirtschaftswissenschaftlichen Praxis fundamental notwendig sind. Das Verständnis der Formeln und deren praktische Anwendung werden durch nützliche Hilfen und verständliche Beispiele sinnvoll unterstützt, so dass der Kontext finanzmathematischer Formeln klar und erklärlich dargestellt wird. Diese Formelsammlung ist ein unverzichtbares Tool für Studierende der Wirtschaftswissenschaften, aber auch ein nützliches Nachschlagewerk für Verantwortliche aus Wirtschaft, Politik und Lehre.
Die Inhalte wurden für die 2. Auflage teilweise überarbeitet und ergänzt.
Business Process Management
(2023)
Entrepreneurial Leadership
(2022)
Start-ups und Unternehmensgründungen ebenso wie Projekt- oder Innovationsmanagement brauchen gleichermaßen neben dem einschlägigen Fachwissen und -erfahrungen Leadership-Skills als Erweiterung klassischer Managementanforderungen. Während diese prozessorientiert konkrete Ziele der strategischen oder operativen Planung umsetzen und optimieren, legt Leadership wie Entrepreneurship den Fokus auf Vision mit entsprechender Motivation zur Gründung oder Veränderung. (Verlagsangaben)
There has been a growing interest in taste research in the HCI and CSCW communities. However, the focus is more on stimulating the senses, while the socio-cultural aspects have received less attention. However, individual taste perception is mediated through social interaction and collective negotiation and is not only dependent on physical stimulation. Therefore, we study the digital mediation of taste by drawing on ethnographic research of four online wine tastings and one self-organized event. Hence, we investigated the materials, associated meanings, competences, procedures, and engagements that shaped the performative character of tasting practices. We illustrate how the tastings are built around the taste-making process and how online contexts differ in providing a more diverse and distributed environment. We then explore the implications of our findings for the further mediation of taste as a social and democratized phenomenon through online interaction.
Diese etablierte Formelsammlung enthält und erklärt mathematische Formeln innerhalb ökonomischer Zusammenhänge, wie sie in den Wirtschaftswissenschaften und in der wirtschaftswissenschaftlichen Praxis unbedingt notwendig sind. Das Verständnis der Formeln und deren praktische Anwendung werden durch nützliche Hilfen und erklärliche Beispiele sinnvoll unterstützt, so dass der Kontext wirtschaftsmathematischer Formeln klar und verständlich dargestellt wird. Diese Formelsammlung ist ein unverzichtbares Tool für Studierende der Wirtschaftswissenschaften, aber auch ein nützliches Nachschlagewerk für Verantwortliche aus Wirtschaft, Politik und Lehre. Die Inhalte wurden für die 5. Auflage teilweise überarbeitet und ergänzt. (Verlagsangaben)
Dieses Lehrbuch schlägt die Brücke zwischen den betriebswirtschaftlich-organisatorischen Methoden und deren digitaler Umsetzung, denn Prozessmanagement heißt zunehmend Gestaltung betrieblicher Aufgaben. Neben methodischen Grundlagen bietet das Werk viele Praxisbeispiele und Übungen. Das Buch von Prof. Gadatsch gilt mittlerweile als der "aktuelle Klassiker", DAS maßgebliche Standardwerk zur IT-gestützten Gestaltung von Geschäftsprozessen. (Verlagsangaben)
Geschäftsprozess-Management
(2023)
BWL für Dummies
(2021)
Steuerlehre für Dummies
(2021)
Work-related thoughts in off-job time have been studied extensively in occupational health psychology and related fields. We provide a focused review of research on overcommitment – a component within the effort-reward imbalance model – and aim to connect this line of research to the most commonly studied aspects of work-related rumination. Drawing on this integrative review, we analyze survey data on ten facets of work-related rumination, namely (1) overcommitment, (2) psychological detachment, (3) affective rumination, (4) problem-solving pondering, (5) positive work reflection, (6) negative work reflection, (7) distraction, (8) cognitive irritation, (9) emotional irritation, and (10) inability to recover. First, we leverage exploratory factor analysis to self-report survey data from 357 employees to calibrate overcommitment items and to position overcommitment within the nomological net of work-related rumination constructs. Second, we leverage confirmatory factor analysis to self-report survey data from 388 employees to provide a more specific test of uniqueness vs. overlap among these constructs. Third, we apply relative weight analysis to quantify the unique criterion-related validity of each work-related rumination facet regarding (1) physical fatigue, (2) cognitive fatigue, (3) emotional fatigue, (4) burnout, (5) psychosomatic complaints, and (6) satisfaction with life. Our results suggest that several measures of work-related rumination (e.g., overcommitment and cognitive irritation) can be used interchangeably. Emotional irritation and affective rumination emerge as the strongest unique predictors of fatigue, burnout, psychosomatic complaints, and satisfaction with life. Our study assists researchers in making informed decisions on selecting scales for their research and paves the way for integrating research on effort-reward imbalance and work-related rumination.
IT Controlling
(2023)
IT controlling is established as a tool for controlling information technology. The job description of the IT controller has changed only moderately over a long period of time. It was mainly associated with IT budgeting, IT portfolio management, IT cost planning, accounting and controlling. However, digitalization has brought movement in goals, contents and methods. New topics such as digital strategy management, cloud controlling, data science, etc. are being discussed. The task profile is changing away from pure IT cost analysis to the management of the digitization strategy with a focus on strategic IT portfolio management. Some voices are already talking about "smart controlling" or "digital controlling".
This book presents an IT controlling concept for the digital age and explains the relevant methods in a practical way.
Angewandte Makroökonomie
(2023)
Dieses Buch zeigt konkret auf, was Geschäftsprozessmanagement ist und wie man es nutzen kann. Hierzu werden die zentralen Aspekte erklärt und praxistaugliche Tools anhand von Beispielen vorgestellt. Erleichtern Sie sich die tägliche Praxis der Analyse und Optimierung von Geschäftsprozessen! Der Inhalt Durchgängiges Fallbeispiel Überblick über praxisrelevante Modellierungsmethoden Modellierung von Prozesslandkarten, Swimlanes, BPMN- und eEPK-Diagrammen Analyse und Optimierung von Prozessen Prozesscontrolling mit Kennzahlen
Focus on what matters: improved feature selection techniques for personal thermal comfort modelling
(2022)
Occupants' personal thermal comfort (PTC) is indispensable for their well-being, physical and mental health, and work efficiency. Predicting PTC preferences in a smart home can be a prerequisite to adjusting the indoor temperature for providing a comfortable environment. In this research, we focus on identifying relevant features for predicting PTC preferences. We propose a machine learning-based predictive framework by employing supervised feature selection techniques. We apply two feature selection techniques to select the optimal sets of features to improve the thermal preference prediction performance. The experimental results on a public PTC dataset demonstrated the efficiency of the feature selection techniques that we have applied. In turn, our PTC prediction framework with feature selection techniques achieved state-of-the-art performance in terms of accuracy, Cohen's kappa, and area under the curve (AUC), outperforming conventional methods.
Konzept zum Umgang mit Prüfungsstress und Lernblockaden bei Studierenden in der Studieneingangsphase
(2021)
Professor Dr. Dietmar Fink, Inhaber des Lehrstuhls für Unternehmensberatung an der Hochschule Bonn-Rhein-Sieg und Geschäftsführender Direktor der Wissenschaftlichen Gesellschaft für Management und Beratung (WGMB) in Bonn, über den Mehrwert von Consulting-Rankings und den Sinn von Beraterprojekten bei Versicherern
Eintreten und abschalten
(2022)
Internationale Patienten
(2022)
Dienstleister
(2022)
Ethik im Medizintourismus
(2022)
Marketingmaßnahmen
(2022)
Interkulturelles Management
(2022)