References of "Roth, Tamara 50043937"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailElectricity powered by blockchain: A review with a European perspective
Roth, Tamara UL; Utz, Manuel; Baumgarte, Felix et al

in Applied Energy (2022), 325

Blockchain is no longer just a hype technology, and effective blockchain applications exist in many industries. Yet, few blockchain projects have been successful in Europe’s energy systems. To identify ... [more ▼]

Blockchain is no longer just a hype technology, and effective blockchain applications exist in many industries. Yet, few blockchain projects have been successful in Europe’s energy systems. To identify the reasons for this slow progress, we reviewed the recent energy literature regarding the use of blockchain, analyzed industry reports, and interviewed experts who have conducted blockchain projects in Europe’s energy systems. Our analysis reveals eight common use cases, their expected benefits, and the challenges encountered. We find that the expected benefits are often little more than generic hopes, largely outweighed by technological, organizational, and regulatory challenges. The identified challenges are significant and numerous, especially for peer-to-peer trading and microgrid use cases. The fact that few projects have yet provided robust evidence for profitable use suggests there is still a rocky road ahead. Moreover, many use cases appear to require more than just blockchain technology to succeed. In particular, privacy and scalability requirements often call for systems in which blockchains only take a backseat. This realization may be essential for the future use of blockchain technology in energy systems – in Europe and beyond. [less ▲]

Detailed reference viewed: 18 (4 UL)
Full Text
Peer Reviewed
See detailThe Role of Cultural Fit in the Adoption of Fashionable IT: A Blockchain Case Study
Roth, Tamara UL; Rieger, Alexander UL; Utz, Manuel et al

in Forty-Third International Conference on Information Systems (2022, October)

Investments in fashionable IT do not make organizations more successful than investments in less fashionable alternatives. Many organizations nevertheless associate with fashionable IT to signal ... [more ▼]

Investments in fashionable IT do not make organizations more successful than investments in less fashionable alternatives. Many organizations nevertheless associate with fashionable IT to signal compliance with norms of progress and rationality. These decisions can be risky as fashionable IT is often surrounded by wishful and unbalanced discourse, especially in the ‘fashion up-swing’. Engagement with fashionable IT thus requires the ability to navigate hype narratives and fit the new technology into the adopting organization. Fit needs to be established in many regards, such as political and technological. In this paper, we explore a third and so far, understudied perspective: cultural fit between the values attributed to the fashionable IT through the fashion discourse and those of the recipient organizational context. Through an inductive case study of two blockchain projects, we find that cultural fit can equally be an important determinant for successful adoption of fashionable IT. Moreover, we develop a process theory for how cultural fit can be established through a process of cultural sensemaking and dissonance reduction along two recursive pathways. Adopting organizations can change their implementation of fashionable IT systems and re-frame the narratives surrounding them to fit their organization’s cultural values. Alternatively, they can transform their local or overarching organizational culture by integrating values attributed to the fashionable IT. Overall, we contribute a much-needed organizational culture perspective to IT fashions and extend the discussions on IT cultural conflict. [less ▲]

Detailed reference viewed: 18 (0 UL)
Full Text
Peer Reviewed
See detailTransition Pathways towards Design Principles of Self-Sovereign Identity
Sedlmeir, Johannes; Huber, Jasmin; Barbereau, Tom Josua UL et al

in Forty-Third International Conference on Information Systems (2022, October)

Society’s accelerating digital transformation during the COVID-19 pandemic highlighted clearly that the Internet lacks a secure, efficient, and privacy-oriented model for identity. Self-sovereign identity ... [more ▼]

Society’s accelerating digital transformation during the COVID-19 pandemic highlighted clearly that the Internet lacks a secure, efficient, and privacy-oriented model for identity. Self-sovereign identity (SSI) aims to address core weaknesses of siloed and federated approaches to digital identity management from both users’ and service providers’ perspectives. SSI emerged as a niche concept in libertarian communities, and was initially strongly associated with blockchain technology. Later, when businesses and governments began to invest, it quickly evolved towards a mainstream concept. To investigate this evolution and its effects on SSI, we conduct design science research rooted in the theory of technological transition pathways. Our study identifies nine core design principles of SSI as deployed in relevant applications, and discusses associated competing political and socio-technical forces in this space. Our results shed light on SSI’s key characteristics, its development pathway, and tensions in the transition between regimes of digital identity management [less ▲]

Detailed reference viewed: 39 (6 UL)
Full Text
Peer Reviewed
See detailUser-centricity and Public Values in eGovernment: Friend or Foe?
Weigl, Linda UL; Amard, Alexandre UL; Marxen, Hanna UL et al

in 30th European Conference on Information Systems (ECIS 2022) (2022, July)

In their delivery of services, public administrations seek to develop a ‘citizen-centric’ approach. Concomitantly, user-centricity is emerging as a widely accepted construct for Web 3.0 applications ... [more ▼]

In their delivery of services, public administrations seek to develop a ‘citizen-centric’ approach. Concomitantly, user-centricity is emerging as a widely accepted construct for Web 3.0 applications supporting the digital interaction between service providers and recipients. The digitalization of public services can positively impact important public values, such as efficiency and transparency. However, the digital divide highlights that information and communication technologies can simultaneously neglect public needs. This begs the question of whether user-centricity reflects or conflicts with public values. To answer this question, we present a systematic review of existing literature on user-centricity and public values. The contribution of this paper is an extended taxonomy of public values for user-centricity, as well as recommendations for public policy to address conflicts between public values and user-centricity. [less ▲]

Detailed reference viewed: 83 (25 UL)
Full Text
Peer Reviewed
See detailWe need a broader debate on the sustainability of blockchain
Rieger, Alexander UL; Roth, Tamara UL; Sedlmeir, Johannes UL et al

in Joule (2022), 6(6), 1137-1141

Detailed reference viewed: 28 (6 UL)
Full Text
Peer Reviewed
See detailGuiding Refugees Through European Bureaucracy: Designing a Trustworthy Mobile App for Document Management
Amard, Alexandre UL; Höß, Alexandra UL; Roth, Tamara UL et al

in Drechsler, A.; Gerber, A.; Hevner, A. (Eds.) The Transdisciplinary Reach of Design Science Research. DESRIST 2022 (2022, May 25)

After being granted asylum in European countries, refugees need to go through a multitude of administrative processes before they can participate in society. However, these processes are often challenging ... [more ▼]

After being granted asylum in European countries, refugees need to go through a multitude of administrative processes before they can participate in society. However, these processes are often challenging, as refugees struggle to understand them, lack instructions for managing paperwork, and do not possess the required language skills. Prior research emphasizes the role of information and communication technologies to simplify and enable refugee-friendly administrative processes. However, recent research and existing applications mainly focus on information retrieval and do not offer assistance for understanding official letters, completing administrative forms, and managing corresponding documents. Furthermore, refugees are often reluctant to use existing applications as they do not trust their host country’s governments and public authorities. In this research, we aim to address this functional and trust gap. We follow a design science research approach to develop a design for a refugee-centric and trustworthy mobile application that assists refugees along administrative processes. In doing so, we identify three design principles that may guide the development of such applications for refugees. [less ▲]

Detailed reference viewed: 42 (14 UL)
Full Text
Peer Reviewed
See detailFrom ambivalence to trust: Using blockchain in customer loyalty programs
Utz, Manuel; Johanning, Simon; Roth, Tamara UL et al

in International Journal of Information Management (2022)

Global initiatives on climate protection and national sustainability policies are accelerating the replacement of fossil fuels with renewable energy sources. Many electricity suppliers are engaged in ... [more ▼]

Global initiatives on climate protection and national sustainability policies are accelerating the replacement of fossil fuels with renewable energy sources. Many electricity suppliers are engaged in efforts to monetize this transition with ‘green’ services and products, such as Green Electricity Tariffs. These promise customers that their supply includes a specific share of green electricity, yet since electricity suppliers often fail to deliver on those promises, many customers have lost trust in their suppliers. Further information asymmetries may not only exacerbate this loss of trust, but also spark distrust and lead to an overall feeling of ambivalence. Eventually, ambivalent customers may feel inclined to switch suppliers. To prevent this domino effect, electricity suppliers must eliminate ambivalence by increasing customer trust and reducing customer distrust. Here, we discuss how these challenges can be met with a customer loyalty program built on blockchain technology. We developed the program following a Design Science Research approach that facilitated refinement in four iteration and evaluation cycles. Our results indicate that the developed customer loyalty program restores trust, reduces distrust, and resolves customer ambivalence by providing four features: improved customer agency, sufficient and verifiable information, appropriate levels of usability, and unobstructed data access. [less ▲]

Detailed reference viewed: 46 (4 UL)
Full Text
Peer Reviewed
See detailBlockchain as a driving force for federalism: A theory of cross-organizational task-technology fit
Roth, Tamara UL; Stohr, Alexander; Amend, Julia et al

in International Journal of Information Management (2022)

Detailed reference viewed: 62 (2 UL)
Full Text
Peer Reviewed
See detailLove at First Sight? A User Experience Study of Self-Sovereign Identity Wallets
Sartor, Sebastian; Sedlmeir, Johannes UL; Rieger, Alexander UL et al

in 30th European Conference on Information Systems (ECIS 2022) (2022)

Today’s systems for digital identity management exhibit critical security, efficiency, and privacy issues. A new paradigm, called Self-Sovereign Identity (SSI), addresses these shortcomings by equipping ... [more ▼]

Today’s systems for digital identity management exhibit critical security, efficiency, and privacy issues. A new paradigm, called Self-Sovereign Identity (SSI), addresses these shortcomings by equipping users with mobile wallets and empowering them to manage their digital identities. Various companies and governments back this paradigm and promote its development and diffusion. User experience often plays a subordinate role in these efforts, even though it is crucial for user satisfaction and adoption. We thus conduct a comprehensive user experience study of four prominent SSI wallets using a mixed-method approach that involves moderated and remote interviews and the User Experience Questionnaire (UEQ). We find that the examined wallets already provide a decent level of user experience, yet further improvements need to be done. In particular, the examined wallets do not make their novelty and benefits sufficiently apparent to users. Our analysis contributes to user experience research and offers guidance for SSI practitioners. [less ▲]

Detailed reference viewed: 72 (3 UL)
Full Text
Peer Reviewed
See detailWith or Without Blockchain? Towards a Decentralized, SSI-based eRoaming Architecture
Höß, Alexandra UL; Roth, Tamara UL; Sedlmeir, Johannes UL et al

in Proceedings of the 55th Hawaii International Conference on System Sciences (HICSS) (2022)

Fragmentation and limited accessibility of charging infrastructure impede the adoption of electric vehicles. To improve the availability of charging infrastructure independent of providers, eRoaming ... [more ▼]

Fragmentation and limited accessibility of charging infrastructure impede the adoption of electric vehicles. To improve the availability of charging infrastructure independent of providers, eRoaming offers a promising solution. Yet, current eRoaming systems are typically centralized, which raises concerns of market power concentration. While the use of blockchain technology can obviate such concerns, it comes with significant privacy challenges. To address these challenges, we explore a combination of blockchain with self-sovereign identity. Specifically, we apply a design science research approach, which helps us to identify requirements, derive a conceptual architecture, and deduce design principles for decentralized eRoaming and beyond. We find that blockchain may best leverage its benefits when it takes a backseat as a public registry for legal entities. Moreover, we find that the use of self-sovereign identities could improve compliance with privacy regulations, but they should not be overused. [less ▲]

Detailed reference viewed: 172 (12 UL)
Full Text
Peer Reviewed
See detailNot yet another digital identity
Rieger, Alexander UL; Roth, Tamara UL; Sedlmeir, Johannes UL et al

in Nature Human Behaviour (2021)

Detailed reference viewed: 105 (23 UL)
Full Text
Peer Reviewed
See detailThe Evolution of an Architectural Paradigm - Using Blockchain to Build a Cross-Organizational Enterprise Service Bus
Amend, Julia; Fridgen, Gilbert UL; Rieger, Alexander UL et al

in 54th Hawaii International Conference on System Sciences (HICSS), Maui, Hawaii (Virtual) (2021, April)

Cross-organizational collaboration and the exchange of process data are indispensable for many processes in federally organized governments. Conventional IT solutions, such as cross-organizational ... [more ▼]

Cross-organizational collaboration and the exchange of process data are indispensable for many processes in federally organized governments. Conventional IT solutions, such as cross-organizational workflow management systems, address these requirements through centralized process management and architectures. However, such centralization is difficult and often undesirable in federal contexts. One alternative solution that emphasizes decentralized process management and a decentralized architecture is the blockchain solution of Germany’s Federal Office for Migration and Refugees. Here, we investigate the architecture of this solution and examine how it addresses the requirements of federal contexts. We find that the solution’s architecture resembles an improvement and cross-organizational adaption of an old architectural paradigm, the enterprise service bus. [less ▲]

Detailed reference viewed: 217 (20 UL)