Stefan Koch

Johannes Kepler University of Linz | JKU · Institute of Business Informatics - Information Engineering

In the past years we have observed enormous adoption and use of digital technologies in almost all domains of human life. In this context, researchers and practitioners have been using the term “digital transformation” (DT) to characterize phenomena related to the changes caused by increased use of digital technologies. The progression and contribu...

This study aims to conceptualise and operationalise a construct representing the individual characteristics of employees that positively influence organisational digital transformation (DT) endeavours. By identifying the central phenomena behind DT, the relevant characteristics of individual employees were identified, mapped towards established psy...

The research provides empirical evidence differentiating between market success and funding success in reward-based crowdfunding campaigns of video games and hypothesizes that the actual contribution of crowdfunding is more stemming from community support and feedback rather than funding amount. The paper uses publicly available data by combining t...

Measuring total performance of prospective alternatives in decision making (DM) needs aggregation of their noncomparable properties which often have different scales of measure. In order to address this, scale transformations and normalization are applied, but problems of validation of such additive models and interpretation of the physical sense o...

Background: This paper aims to develop an effective decision making (DM) process for ERP change or replacement. ERP in most organizations constitutes a key critical system of high complexity with many stakeholders. A major change activity for such a system therefore exposes an organization to great risks, and thus should be well organized. Method:...

Background: There is increasing pressure on organizations to undergo digital transformation. The literature provides substantial but unconsolidated knowledge of relevant factors that enable organizations to fully utilize the potential of digital technology transformations. This work revises, expands, and updates a previously published framework of...

Background: There is increasing pressure on organizations to undergo digital transformation. The literature provides substantial but unconsolidated knowledge of relevant factors that enable organizations to fully utilize the potential of digital technology transformations. This work revises, expands, and updates a previously published framework of...

Purpose The purpose of this paper is to focus on user innovation strategies and their stability in the video game industry. The main research questions addressed are whether a significant portion of video game companies employ user innovation, and how these strategies are showing signs of success and evolve over time. Design/methodology/approach F...

Die Umsetzung der Digitalisierung stellt für Organisationen momentan eine der größten Herausforderungen dar und endet oft in digitalem Aktionismus. Daher entwirft dieser Beitrag ein Vorgehensmodell, das aufgrund der durchgehenden Orientierung am Geschäftsmodell und der daraus erfolgenden systematischen Ableitung und Evaluierung von Maßnahmen die zi...

Zusammenfassung Die Umsetzung der Digitalisierung stellt für Organisationen momentan eine der größten Herausforderungen dar und endet oft in digitalem Aktionismus. Daher entwirft dieser Beitrag ein Vorgehensmodell, das aufgrund der durchgehenden Orientierung am Geschäftsmodell und der daraus erfolgenden systematischen Ableitung und Evaluierung von...

Purpose In the last years the penetration of enterprise resource planning (ERP) systems within small, medium and large organizations increased steadily. Organizations are forced to adapt their systems and perform ERP upgrades in order to react to rapidly changing business environments, technological enhancements and rising pressure of competition....

This study illustrates how different user groups perceive and evaluate the content quality of Wikipedia articles as compared to entries of a traditional encyclopedia. Therefore, an experimental set-up was used with blinded articles of different topic fields from the German Wikipedia and Brockhaus online, evaluated by experts with different backgrou...

Das Treffen von unternehmerischen Entscheidungen auf Basis großer Datenmengen, die mittels Informationssystemen strukturiert, analysiert und visualisiert werden, stellt seit Jahrzehnten ein Kernthema der Wirtschaftsinformatik dar. In diesem Fall spricht man von einer fakten- oder evidenzbasierten Entscheidung (System 2). Gleichzeitig werden in Unte...

This article focuses on critical success factors during the implementation of a business intelligence system. The existing literature was reviewed, and critical success factors were extracted. Subsequently, the critical success factors that occur in practice were collected through qualitative expert interviews that are analysed through a qualitativ...

Brand management has been moving towards making use of multiple channels in order to engage customers, especially through social media, and sustain a more intense experience around the brand instead of depending merely on advertising. This paper will investigate the effectiveness of social media marketing activities on brand value through compariso...

Objectives: The purpose of this paper is to examine entrepreneurial as well as intrapreneurial potential of IT students, as they by their education are prime possible future technopreneurs and technology intrapreneurs. Literature review: Entrepreneurial intentions of students are a well-established research field. Nevertheless empirical work in th...

Purpose This paper analyzes influences on the adoption of an application launched by some airlines and independent providers, called ‘social seating’, which is based on user -profiles systems like from or similar to social networks. These applications have not been widely successful, and therefore constitute an interesting exception within the are...

This study provides insights into the success of smartphone applications (apps) based on the chosen business model and version release strategy, and relates these variables to the motivations of their third-party innovators in the smartphone OS market. The analysis is based on a questionnaire focusing on motivational factors and demographics of dev...

The OpenACS community framework is a mature software toolkit for developing online community platforms. Originally invented at a university, it has prospered due to a high commercial demand and major investments, and subsequently settled as an open source project. In this chapter, the authors extend a previous analysis of the evolution of this soft...

Communication apps can be a major factor in a digital strategy based on being a data and communication hub, and therefore understanding their diffusion and growth is of high importance. In this paper, we provide a list of factors and concepts that drive their growth, but can also be used to differentiate between apps, in order to understand why som...

This research conceptualizes and measures Social Media Adoption (SMA) of companies with a process-based approach and explains its antecedents of micro and macro environment, size, and ownership, as well as its consequence of intention to increase resources dedicated to Social Media (SM). Based on data from 310 Turkish Small and Medium Enterprises (...

The focus of this paper is the impact of user innovations on the success of video games. Through the use of secondary data sources, a dataset of 204 video games and their expert and user ratings, user innovation and distribution platform support, as well as the number of available user innovations, is constructed and analyzed. The results highlight...

This article presents a qualitative study of business incubators in Turkey and their contribution to the success of technology start-ups. Through in-depth interviews, we define the concept of start-up success and identify the factors associated with effective incubation from the perspectives of incubator tenants and incubator managers. Our longitud...

In this research, we investigated the predictive powers of I-deals and job crafting on key employee outcomes (in-role work performance, citizenship behaviors directed at organization and co-workers, affective commitment and intentions to stay). In doing so, we also compared the explanatory degree of job crafting and I-deals on these outcomes. We us...

Purpose – This paper aims to report findings from an exploratory empirical study focusing on an application of mass customization in financial services. Based on the study of configurations and usage data, the authors evaluate a series of hypotheses relating to the interplay of adoption and usage by customers. Design/methodology/approach – The stu...

Brand management has been moving towards making use of multiple channels in order to engage customers, especially through social media, and sustain a more intense experience around the brand instead of depending merely on advertising. This paper will investigate the effectiveness of social media marketing activities on brand value through compariso...

Context The ecosystems surrounding current smartphones operating systems, especially the application markets, provide significant value for customers and therefore possibilities for provider differentiation. Why do independent application developers and innovators join these ecosystems, and which factors influence their choice between different pla...

In this research, we attempted to test the predictive power of job crafting and I-deals as employee proactive behaviors over team and individual level performance. Moreover, we also tested for the mediation of team resilience in the relationship between employee proactive behaviors and performance outcomes at both team and individual levels. We rec...

This article provides an empirical examination of the Turkish software industry to understand how its current profile, managerial practices and perceptions are shaped by the context of an emerging economy and its cultural background. In comparison to a developed economy with a very different culture, Austria, employees, know-how, and access to new...

The amount of customisation to an enterprise resource planning (ERP) system has always been a major concern in the context of the implementation. This article focuses on the phase of maintenance and presents an empirical study about the relationship between the amount of customising and the resulting support effort. We establish a structural equati...

In this paper, we will discuss the existence and form of open source community processes, whether they differ between projects, and whether they have any implications on both micro and macro level. We will take a look at how different processes can impact the work and the resulting quality within projects, as well as on macro or project level outco...

Immer mehr Unternehmen setzen betriebswirtschaftliche Standardsoftwarepakete wie beispielsweise SAP R/3 oder BaaN ein. Die Auswahl und die Einführung solcher Systeme stellt für die meisten Unternehmen ein strategisch wichtiges IT-Projekt dar, das mit massiven Risiken verbunden ist. Bei der Auswahl des am besten geeigneten Systems gilt es einen Grup...

This study presents preliminary findings of a longitudinal qualitative study concerning business incubators in Turkey, and their effectiveness in enhancing the success and sustainability of new software ventures. A field study was conducted to gain an in-depth understanding of incubation experiences and software start-up success. Results were combi...

Motivated by information technology evaluation problems identified in a large public sector organization, we propose how evaluation requirements can be supported by a framework combining different models andmethods from information systems evaluation theory. The article extends the content, context, process perspectives of organizational change wit...

Innovation is rapidly becoming a central driver in the marketing strategy of many service companies, while its effects on the perceived value of a service brand have yet to be determined. The purpose of this chapter is to explore how introducing an innovation affects the perceived brand equity of services in an emerging economy. The authors propose...

This study focuses on the attitudes of venture capital companies with regard to investments into open source software-based start-ups in Turkey, with a special focus on their preference for different possible business models which these start-ups could be based on. A series of in-depth qualitative interviews has been done with managers of venture c...

This paper seeks to tackle the current confusion about the constituent dimensions of IT Governance (ITG) and inconsistent operationalisation approaches inhibiting advances in research and organisational ITG practice. Through a structured literature review of ranked high-quality publications augmented by a meta-case study with five underlying projec...

This paper explores the impacts associated with different software process models on the staff. The main research question addressed is whether any process model leads to a higher satisfaction of staff, and less human resource related problems, including staff turnover or increased stress levels. This issue is empirically investigated using a set o...

In this paper we will discuss the organization of work which is found to be present in open source projects, and the implications for the expended effort as well as achieved efficiency. The paper is based on several empirical analyses of open source communities. The main method employed is mining the associated software repositories which are publi...

Introduction. In information systems literature, the Technology Acceptance Model is one of the most widely used approaches for modelling adoption behaviour, including e-commerce applications. In this paper, we propose to extend this model by adding a relationship between technology acceptance and the perceived presence of a community and its charac...

This paper explores the impacts associated with different software process models on the staff. The main research question addressed is whether any process model leads to a higher satisfaction of staff, and less human resource related problems, including staff turnover or increased stress levels. This issue is empirically investigated using a set o...

Open source software has opened up a new possibility for corporations that are currently developing software, namely developing with open source software. This can be done either using existing components and projects and build upon their results or release own projects in an early stage with free code and hope for a community to form around this p...

Thanks to the open nature of libre (free, open source) software projects, researchers have gained access to a rich set of data related to various aspects of software development. Although it is usually publicly available on the Internet, obtaining and analyzing the data in a convenient way is not an easy task, and many considerations have to be tak...

This article strives to support research and practice in the application of decision and valuation models to IT infrastructure projects in public administration. The aim is to present the elements needed to flexibly embrace evaluation structure, management and quantification methods. We sketch how different models can work together in a complementa...

ERP implementation projects have received enormous attention in the last years, due to their importance for organisations, as well as the costs and risks involved. The estimation of effort and costs associated with new projects therefore is an important topic. Unfortunately, there is still a lack of models that can cope with the special characteris...

There has been considerable discussion on the possible impacts of open source software development practices, especially in regard to the quality of the resulting software product. Recent studies have shown that analyzing data from source code repositories is an efficient way to gather information about project characteristics and programmers, show...

In this paper we explore possible benefits of communication and coordination tools in open source projects using an efficiency score derived from data envelopment analysis (DEA) as dependent variable. DEA is a general non-parametric method for efficiency comparisons without asking the user to define any relations between different factors or a prod...

Many corporate code developers are the beta testers of open source software.They continue testing until they are sure that they have a stable version to build their code on. In this respect defect predictors play a critical role to identify defective parts of the software. Performance of a defect predictor is determined by correctly finding defecti...

Social choice deals with aggregating the preferences of a number of voters into a collective preference. We will use this idea for software project effort estimation, substituting the voters by project attributes. Therefore, instead of supplying numeric values for various project attributes that are then used in regression or similar methods, a new...

There has been considerable discussion on the possible impacts of open source software development practices, especially in regard to the quality of the resulting software product. Recent studies have shown that analyzing data from source code repositories is an efficient way to gather information about project characteristics and programmers, show...

There has been considerable discussion on the possible impacts of open source software development practices, especially in regard to the quality of the resulting software product. Recent studies have shown that analyzing data from source code repositories is an efficient way to gather information about project characteristics and programmers, show...

In this chapter, we propose for the first time a method to compare the efficiency of free and open source projects, based on the data envelopment analysis (DEA) methodology. DEA offers several advantages in this context, as it is a non-parametric optimization method without any need for the user to define any relations between different factors or...

In this chapter, we argue for adopting mechanisms from the field of social choice for effort estimation. Social choice deals with aggregating the preferences of a number of individuals into a single ranking. We will use this idea, substituting these voters by different project attributes. Therefore a new project only needs to be placed into ranking...

This paper develops models for programmer participation and effort estimation in open source software projects and employs the results to assess the efficiency of open source software creation. Successful development of such models will be important for decision makers of various kinds. We propose hypotheses based on a prior case study on manpower...

In this paper, we propose to arrive at an assessment and evaluation of open source projects based on an analysis of their growth rates in several aspects. These include code base, developer number, bug reports and downloads. Based on this analysis and assessment, a well-known portfolio planning method, the BCG matrix, is employed for arriving at a...

There has been considerable discussion on the possible impacts of open source software development practices, especially in regard to the quality of the resulting software product. Recent studies have shown that analyzing data from source code repositories is an efficient way to gather information about project characteristics and programmers, show...

In this paper we will analyse sourcing decisions in the finance sector, dealing with a mature area, IT outsourcing and a relatively new field, operations outsourcing. For introducing this topic, we will first detail the current state in outsourcing of IT processes and services, using several studies already published and also a new empirical invest...

The use of ICT in the Austrian judicial system can be described as widespread. Currently, a plethora of different benchmarking studies have been published ranking different countries according to their e-government readiness or maturity, but they are inconclusive, so no results are given here. For discussion of these studies, see for example Lee, T...

In this paper, the evolution of a large sample of open source software systems will be analysed. The evolution of commercial systems has been an issue that has long been a centre of research, thus a coherent theoretical framework of software evolution has been developed and empirically tested, most notably the laws of software evolution. In explori...

In this paper, we propose to explore possible benefits of communication and coordination tools in open source projects using data envelopment analysis (DEA), a general method for efficiency comparisons. DEA offers several advantages: It is a non-parametric optimization method without any need for the user to define any relations between different f...

Research on FLOSS has relied on several different kinds of scientific evidence, such as the archives created by the FLOSS developers, versioned code repositories, mailing list messages and bug and issue tracking repositories [1]. FLOSS teams retain and make public archives of many of their activities as by-products of their open technology-supporte...

Referenzmodelle sind ein zentraler Untersuchungsgegenstand der Wirtschaftsinformatik. Ihre Entwicklung ist nicht nur wissenschaftlich reizvoll, sie stellen gleichzeitig eine wirksame Unterstützung der Praxis in Aussicht. Diesen Verheißungen zum Trotz verlief die Entwicklung und - vor allem - Verbreitung wissenschaftlich fundierter Referenzmodelle b...

In this chapter, we propose for the first time a method to compare the efficiency of free and open source projects, based on the data envelopment analysis (DEA) methodology. DEA offers several advantages in this context, as it is a non-parametric optimization method without any need for the user to define any relations between different factors or...

In this chapter, we propose for the first time a method to compare the efficiency of free and open source projects, based on the data envelopment analysis (DEA) methodology. DEA offers several advantages in this context, as it is a non-parametric optimization method without any need for the user to define any relations between different factors or...

In the last years an increasing number of enterprise resource planning (ERP) systems like SAP R/3, BaaN or Oracle Applications have been implemented. This implementation of the selected solution is risky and complex for individual companies, since on the one hand the software and especially the necessary manpower is relatively expensive and on the...

OpenACS is a high level community framework designed for devel-oping collaborative Internet sites. It started from a university project at MIT, got momentum from the ArsDigita Foundation, and split up into a commercial and an open source version. OpenACS has proven its durabil-ity and utility by surviving the death of its parent company (ArsDigita)...

The present contribution proposes to transfer the main principles of open source software development to a new context: conceptual modelling; an activity closely related to software development. The goal of the proposed open model approach is to collaboratively develop reference models for everyone to copy, use and refine in a public process. We br...

In diesem Artikel werden die Ergebnisse einer vergleichenden Usability-Untersuchung von Office Suites dargestellt, wobei einerseits der kommerzielle Marktführer Microsoft Office, andererseits die in dem Bereich führende Open Source Software, OpenOffice.org, miteinbezogen wurden. Insbesondere sollte die Frage geklärt werden, ob und mit welchen Probl...

The following commentary is part of First Monday's Special Issue #2: Open Source.

Durch die zunehmende Verbreitung des IT- und Geschäftsprozess-Outsourcings gewinnt das Management der Outsourcing-Beziehungen an Bedeutung. Die ausgelagerten Prozesse sind auf Grundlage eines von allen Beteiligten akzeptierten Qualitätsbegriffs durch Standards und Prozeduren zur Qualitätssicherung und -kontrolle zu begleiten. Der Beitrag zeigt anha...

In this paper we discusses in detail a possible methodology for collecting repository data on a large number of open source software projects from a single project hosting and community site. The process of data retrieval is described along with the possible metrics that can be computed and which can be used for further analyses. Example research a...

In this paper, the evolution of a large sample of open source software projects will be analysed. The evolution of commercial systems has been an issue that has long been a center of research, thus a coherent theoretical framework of software evolution has been developed and empirically tested. Therefore these results can be used to compare the sit...

This paper makes the case for adopting a risk measure from the finance sector for IS/IT project and portfolio evaluation. The proposed value-at-risk approach constitutes a well-tested approach in high-risk environments, especially banking, and reports the expected maximum loss (or worst loss) over a target horizon within a given confidence interval...

Libre (free, open source) software is one of the paradigmatic cases where heavy use of telematic tools and userdriven software development are key points. This paper proposes a methodology for measuring and analyzing remotely big libre software projects using publicly-available data from their version control repositories. By means of a tool called...

The economic justification of investments in information technology (IT) is a basic issue for IT management in private and in public-sector organisations. Usually, the expenses made for any investment are compared to the cost saved. While the costs for implementing a new system are uncertain, only a small percentage of the benefits accrues as cost...

In the last years, two movements have been widely discussed in the software development community: Agile and open source development. Both have faced some of the same criticism, and both claim some of the same benefits. This paper poses the question whether open source software development is in accordance with agile software development principles...

In this paper we report possibilities and experiences from employing Counter-Strike, a popular multi-player Internet computer game and its resulting online community in research on cooperative behaviour. Advantages from using this game include easy availability of rich data, the emphasis on team-playing, as well as numerous possibilities to change...

Immer mehr Unternehmen setzen betriebswirtschaftliche Standardsoftwarepakete wie beispielsweise SAP R/3 oder BaaN ein. Die Auswahl und die Einführung solcher Systeme stellt für die meisten Unternehmen ein strategisch wichtiges IT-Projekt dar, das mit massiven Risiken verbunden ist. Bei der Auswahl des am besten geeigneten Systems gilt es einen Grup...

This chapter introduces the ERP software acquisition process based on a rational or normative decision-making approach embedded within the wider ERP system lifecycle. It presents five hypotheses closely related to practical problems during ERP system acquisition, which were derived from a review of recent academic literature and suggestions from st...