<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"> </script> <script type="text/javascript"> $(document).ready(function() { $('div.accordionButton').click(function() { $('div.accordionContent').slideUp('normal'); $(this).next().slideDown('normal'); }); $("div.accordionContent").hide(); }); </script> <style type="text/css"> .accordionButton { font-size: 16px; background-color: #004d91; color: white; padding-left: 20px; padding-top: 5px; padding-bottom: 5px; border: 1px solid white; cursor:pointer; } .accordionButton :hover{ font-size: 16px; background-color: #004d91; color: #e2c192; padding-left: 20px; padding-top: 5px; padding-bottom: 5px; border: 1px solid white; cursor:pointer; } #wrapper { background-color: #dbe8fd; } #invited{ font-size: 16px; margin-top: 5px; margin-left: 35px; font-weight: bold; } #by { margin-left: 35px; font-size: 14px; font-weight: bold; } #discussant { margin-left: 35px; font-size: 14px; } #abstract { margin-left: 50px; margin-top: 20px; font-size: 12px; text-align: justify; padding-right: 20px; line-height: 150%; } #bio { margin-left: 50px; margin-top: 20px; font-size: 12px; text-align: justify; padding-right: 20px; line-height: 150%; } </style> This seminar is organized for the Center of Doctoral Studies in Business (CDSB) in cooperation with the Area of Operations and Information Systems. Visiting researchers present their latest research. The seminar takes place at: 12:30 - 13:30, in Room SN 169 - Röchling Hörsaal (former O 169) Schneckenhof Nord The preliminary schedule is given below:
07.03.2012 Prof. Arun Rai
Prof. Arun Rai
on invitation of Prof. Mädche
Discussant: tba
Abstract How can Physicians’ Appraisals of IT-enabled Process Innovation Be Influenced?

Medical accidents, adverse drug events, and process inefficiencies in healthcare service delivery have been traced to the order management process through which clinicians coordinate their work. Computerized Provider Order Entry (CPOE) is an IT-enabled process innovation targeted toward inpatient hospital care, which aims to coordinate the flow of clinical orders among doctors, nurses, pharmacists and lab technicians. While CPOE has been found to reduce order turnaround times and has been touted as having the capability of reducing medical errors and improving quality, only about 8% of U.S. hospitals have adopted it. Moreover, over half the physicians at hospitals adopting CPOE report not using the system.

There are several reasons why physicians may be reluctant to embrace CPOE. First, using CPOE can be time consuming compared to paper-based systems. Second, off-the-shelf CPOE systems may have usability issues or may not be sufficiently flexible. Third, CPOE systems necessitate changes to work processes, affect teamwork in the hospital by shifting work among clinicians, and may be perceived as weakening physicians’ autonomy. As with any complex IT system that affects work processes, there are both benefits (in terms of process improvement) and switching costs (in terms of work process transitions) associated with moving to CPOE. Ultimately, the perceived usefulness of CPOE among potential adopters will depend upon the perceived benefits outweighing the switching costs. Given that the rate of adoption for CPOE at both the macro-level (hospitals) and micro-level (providers) has been lower than expected, it is important to understand how both perceived costs and benefits influence physicians’ perceptions regarding the usefulness of CPOE.

The hospital context in which CPOE must be implemented, as well as the asymmetric cost/benefit profile it carries, pose unique and special challenges. Unlike some organizations with a strong command and control structure, managing health care professionals in hospital settings has been compared to conducting an orchestra. While past IS studies have identified important factors that affect the adoption and use of systems, there is a gap in our understanding concerning the factors that promote or inhibit individual adoption by professionals working as part of a service delivery team in this type of organization.

We draw on the literatures on IS implementation, services innovation, and healthcare operations to theorize how physicians’ perceptions of process improvement and switching costs affect physicians’ perceived usefulness of CPOE as the process innovation progresses through pre-implementation, implementation and post-implementation stages. We also theorize how two organizational mechanisms –transition support and social influence – influence physicians’ perceived process improvement and switching costs through these stages. We conducted a longitudinal field study of a CPOE implementation at a large hospital system in the Southeastern United States to test our model and hypotheses. Our data were collected in three waves – pre-implementation (n= 230); 3-month post-implementation (n = 272) and 6-month post-implementation (n= 186), enabling us to examine the changes in key relationships that influence physicians’ perceptions of CPOE usefulness over time. Our findings provide compelling theoretical and practical insights on managing IT-enabled innovation for healthcare service delivery and, more generally, IT-enabled service operations.
Short Bio Arun Rai is Regents’ Professor of the University System of Georgia and Harkins Chair of Information Systems at the Robinson College of Business at Georgia State University. He has held visiting appointments at universities in Germany, France, Hong Kong, and Australia. He co-founded the Robinson College of Business’ Center for Process Innovation, an interdisciplinary research center that promotes industry-university partnerships. He was appointed Regents’ Professor in 2006 by the Board of Regents of the University System of Georgia for outstanding contributions in research, teaching, and service. He was named Fellow of the Association for Information Systems in 2010 in recognition of his outstanding contributions in research, teaching, and service to the Information Systems discipline.    

For over 20 years, Arun’s research has examined how organizations can leverage information technologies in their strategies, inter-organizational relationships, and processes, and how systems can be successfully developed and implemented. He has collaborated with major organizations across sectors (e.g., IT, healthcare, automotives, financial services, government) on research projects, and his studies have been sponsored by organizations as well as by thought leadership forums and government agencies. He has published over 85 articles in journals such as ISR, MISQ, Management Science, JMIS, JAIS, and Journal of Operations Management.

Arun has developed and taught courses related to IT and strategy, supply chain management, technology and innovation, theory development and research methods at the master’s and doctoral levels. He has chaired 24 doctoral dissertations and served as committee member on another thirty. He has also developed and delivered executive education programs for major organizations and has consulted with C-level executives in various sectors on IT-enabled transformation at their organizations. He has served as Senior Editor and Associate Editor for several leading journals (e.g., ISR, MISQ, Management Science, JAIS, JMIS) and has also been involved in a variety of other service roles (e.g., panelist for NSF, track chair, counselor at consortia for doctoral students and junior faculty).

Arun can be reached at arunrai@gsu.edu and his website is at arunrai.us.
14.03.2012 Prof. Schmidt
Prof. Schmidt
on invitation of Prof. Becker
Discussant: Mr. David Geiger
Abstract Beyond Ubicomp - Computing is Changing the Way we Live

Over the last 20 years ubiquitous computing has become reality. Phones, household appliances, TVs, and cars have essentially become computers. Many of them are networked and offer specific capabilities for human-computer interaction. Computing technologies become an integral part of our life and they shape more and more how we perceive the world and how we interact with each other. By creating ubiquitous computing technologies we essentially have the means to change the way people live and hence the stakes are high! Developing ubiquitous computing systems raises again many engineering challenges, that we regarded as solved for traditional computing systems. We have to fundamentally re-think all steps in the design and development process – from requirements engineering, to computer and system architecture, to concepts for iterative design, to implementation, and deployment. In the talk, the technology trends that enable a new generation of computing systems will be highlighted. Examples of interactive ubiquitous computing will be discussed to outline key challenges in engineering computing systems for 21st century. Furthermore an outlook of upcoming modalities and user interface concepts is presented. The talk concludes with a vision that takes social networks to an extreme and suggests computing systems that enable perception and interaction without temporal and spatial boundaries. With this example the fundamental tension between what is feasible and what is desirable is raised.
Short Bio Albrecht Schmidt is a professor for Human Computer Interaction at the University of Stuttgart. Previously he was a Professor at the University of Duisburg-Essen and had a joined position between the University of Bonn and the Fraunhofer Institute for Intelligent Analysis and Information Systems (IAIS). He studied computer science in Ulm and Manchester and received a PhD from the Lancaster University in the UK in 2003. His research interest is in human computer interaction beyond the desktop, including user interfaces for mobile devices and cars. Albrecht published well over 100 refereed archival publications and his work is widely cited. He is co-founder of the ACM conference on Tangible and Embedded Interaction (TEI) and initiated the conference on Automotive User Interfaces (auto-ui.org). He is an area editor of the IEEE Pervasive Computing Magazine and edits a column on invisible Computing in the IEEE Computer Magazine.

Albrecht’s blog: http://albrecht-schmidt.blogspot.com/
21.03.2012 Prof. Dibbern
Prof. Dibbern
on invitation of Prof. Heinzl
Discussant: Tillmann Neben
Abstract Coevolution and Revolution in Governance Mechanisms – <br/> Insights from a Punctuated Equilibrium Model

The appropriate governance of IT activities is challenging managers and academics alike. Particularly, governance of external vendors by means of contractual and relational governance has been identified as a major determinant for IT outsourcing success. Therefore, we seek to advance our understanding of the dynamics of changes in IS outsourcing governance. More specifically, we address the following research question: In what ways and why does governance evolve over time?
Short Bio Jens Dibbern is a Professor and Co-Director of the Institute of Information Systems at the University of Bern, Switzerland. He received his Ph.D. in information systems from the University of Bayreuth and habilitated at the University of Mannheim, Germany. His research focuses on various aspects of the division of work in information systems and through information systems, such as outsourcing, offshoring, and design of collaborative systems for supporting distributed work. He has previously published in MIS Quarterly, IEEE Transactions on Engineering Management, Journal of the Association of Information Systems, Information & Management, ACM SIGMIS Database, Business & Information Systems Engineering, and others. He is on the editorial boards of MIS Quarterly and ACM SIGMIS Database.
25.04.2012 Prof. Missbauer
Prof. Missbauer
on invitation of Prof. Stolletz
Discussant: tba
Abstract Models for order release planning in production planning and control: Theoretical foundation, state of the art and unsolved problems
Short Bio Prof. Dr. Hubert Missbauer studied Business Administration at the University of Linz/Austria, majoring in Production Management and Information Systems. He received his Diploma degree in 1982 and his Doctoral degree in 1986. Topic of his "Habilitation” (post-doctoral thesis) was A new design of Manufacturing Planning and Control Systems based on the workload control concept. Currently Hubert Missbauer is Full Professor for Production and Logistics Management at the University of Innsbruck/Austria. His main research interests are planning concepts and methods of production planning and control systems and, more general, the application of quantitative methods in business.
02.05.2012 Prof. Schmidt-Thieme
Prof. Schmidt-Thieme
on invitation of Prof. Schader
Discussant: Ms Li
Abstract Recommender Systems for Social Applications

In this talk I will give an overview of recommendation problems in social applications, e.g. applications like Flickr, Delicious etc. that allow users to share and tag resources like photos, web links etc. Different from classical recommendation problems in e-commerce that involve just two types of entities, users/customers and items/products (see e.g., Schmidt-Thieme 2005), problems in social systems usually involve three (or even more) types of entities, such as user, items and tags. State-of-the-art matrix factorization models for recommender systems have to be generalized to tensor factorization models. I will esp. introduce the pairwise interaction tensor factorization model (Rendle/Schmidt-Thieme 2010), the state-of-the-art model for tag recommendation, as well as factorization machines for context-aware recommendations in general (Rendle et al. 2011). Finally, I will discuss implementations of experiments using the MyMedia Lite recommendation systems library (Gantner et al. 2011).

Readings: * Steffen Rendle, Zeno Gantner, Christoph Freudenthaler, Lars Schmidt-Thieme (2011): Fast Context-aware Recommendations with Factorization Machines, in Proceedings of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2011), Bejing, China.

* Steffen Rendle, Lars Schmidt-Thieme (2010): Pairwise Interaction Tensor Factorization for Personalized Tag Recommendation, in Proceedings of the Third ACM International Conference on Web Search and Data Mining (WSDM 2010), ACM.

* Zeno Gantner, Steffen Rendle, Christoph Freudenthaler, Lars Schmidt-Thieme (2011): MyMediaLite: A Free Recommender System Library, in 5th ACM International Conference on Recommender Systems (RecSys 2011), Chicago, USA.

* Lars Schmidt-Thieme (2005): Compound Classification Models for Recommender Systems, in Proceedings of the IEEE International Conference on Data Mining (ICDM) 2005, Houston, USA.
Short Bio Prof. Dr. Dr. Lars Schmidt-Thieme is full professor leading the Information Systems and Machine Learning Lab (ISMLL) belonging to the Institute of Computer Science at University of Hildesheim, Germany.
He obtained his diploma in mathematics at the University of Heidelberg in 1999 and received his PhD at the Department of Economics and Business Engineering at the University of Karlsruhe, in 2003.
From 2003 to 2006 he was professor at the Institute for Computer Science at the University of Freiburg.
Since 2006 he is professor at University of Hildesheim.

His main research interests are Machine Learning, especially recommender systems. He has published articles in top international conference proceedings (e.g. IEEE ICDM, ACM KDD, or UAI) and journals. He is member of program committees of many renowned international conferences (e.g. ACM, KDD, SIAM SDM, ECML, and ACM Recommender Systems).
Jointly with his PhD students he won several best paper awards (WWW 2009, IEEE CSE 2010) and best student paper awards (CSEDU 2011, WSDM 2010).
16.05.2012 Prof. Weitzel (Muss leider entfallen)
Prof. Weitzel
on invitation of Prof. Veit
Muss leider entfallen
23.05.2012 Prof Rothlauf
Prof. Rothlauf
on invitation of Prof. Fleischmann
Discussant: tba
Abstract Design of Choice Experiments for Adaptive Decision-Making Analysis

The talk presents a new approach for the design of choice task experiments. It creates choice tasks with a one-to-one correspondence between a set of possible decision strategies that can be used by decision makers, and the choices they make. Thus, a decision strategy used is unambiguously deduced from an observed choice. Furthermore, the approach systematically manipulates the characteristics of choice tasks and takes into account measurement errors concerning the preferences of the decision makers. This approach can be used to generate respondent-specific choice tasks with either low or high complexity and study their influence on the use of compensatory and non-compensatory decision strategies.

The talk provides results for two measurements of context-based complexity, namely similarity and conflict, and two measurements of task-based complexity, namely the number of alternatives and the number of attributes. An increase in similarity, conflict and the number of alternatives leads to an increased use of non-compensatory strategies and a decreased use of compensatory decision strategies. Furthermore, interaction effects between similarity and conflict exist.

The proposed approach does not rely on particular decision strategies or hypotheses to be tested and is immediately applicable to a wider range of decision environments.
Short Bio
30.05.2012 Prof. Suprateek Sarker
Prof. Suprateek Sarker (Washington State University, Pullman, USA)
on invitation of Prof. Veit
Discussant: Tillmann Neben
Title: <br/>Toward an Anatomy of "Successful” Qualitative Research: A Critical Review and Some Recommendations <br/> Authors of the working paper: <br/>Suprateek Sarker, Xiao Xiao, Tanya Beaulieu Abstract The purpose of our research paper is to address the current state of qualitative research in the IS discipline. We assess the current trends and patterns of 85 qualitative research articles from four mainstream IS journals published over the period of 2001-2011. We analyze each article with respect to the research question, the way the IT artifact issue is handled, theoretical engagement, methodological aspects of data collection, data analysis, and criteria of rigor, research contribution, and presentation. Our findings are not meant to be normative per se, but do make visible the strategies of authors who have been successful in publishing in the leading mainstream journals of the discipline with no open preference for qualitative research. We also propose a set of principles that we believe can help assist authors and evaluators in further enhancing the status of qualitative research.
Short Bio Please find further information at Prof. Suprateek Sarker's website.