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Master thesis (2026) - M.A. Martinez, Aaron Ding, M.E. Warnier, H. Schreuder, J.C. van Iterson
The GSM-R network is a mission critical 2G telecom network which is tasked with ensuring the safe communication of train drivers with dispatchers across the EU. More specifically, this research explores the application of GSM-R in the Netherlands, and what threatens its future resilience, reliability, and availability. Of course, large scale critical infrastructure such as GSM-R is not one monolithic thing, and so to gain a better understanding of what these future threats are, the research is clearly divided into hardware, software, and human focuses. GSM-R is due to be replaced by FRMCS in the coming years, as the ERA has stated that GSM-R is getting to be too old of a system for the European train network to continue using. FRMCS is a 5G replacement network that aims to provide the same functionality as GSM-R, but with more modern technologies and knowledge. The problem there is that FRMCS is not yet ready for large scale deployment in the EU, so GSM-R must remain in service until then. From the beginning of the research process, it was clear that telecom applications have not previously had a transitional plan designed with a focus on the legacy system that is to be replaced. As such, this research aims to do just that. To do so, this research first looks into the basic infrastructure components that make up the GSM-R network. This is done so that an understanding can be built of what the network is made up of, so that they can be further discussed when it comes to actual failure data. While the information gathered for this part of the research does not have a large bearing on the ultimate final product, it is important to discuss the specifics of systems this large when considering future resilience threats. The research conducted in this thesis has a very large basis in established literature, as the methodologies and frameworks identified from desk research have direct applications to the task at hand in the thesis. Each sub-section of each focus also has its own different method or framework, which provides a robust means of attacking future threats as they are identified. These same frameworks and methodologies find their direct application in the data analysis conducted later on in the research. Utilizing failure and site completion data scaled from January 2020 until December 2026 for hardware, and support case data from January 2021 until December 2026 for software, trendlines were developed which roughly forecast what the future looks like for these two disciplines. These trendlines then are projected further into the future to provide an understanding of what things will look like, with some of the previously mentioned frameworks and methodologies applied to indicate how projections can change, with the proper planning. The human knowledge discipline of this research then looks into what can be expected in terms of retirees from the current workforce, in both 2035 and 2045. This data provides an indication of when the methodologies and frameworks from the literature review should be put into place, as knowledge management and retainment strategies need to be in place for the years before they are needed. To further bolster the findings from the data analysis, interviews were conducted. These interviews had a more future oriented focus than the data analysis, in the hopes of gaining personal insights that would otherwise not be attainable through historical data. The findings from all of this data indicate that remote radio heads, rectifiers, components of flexi multiradio system modules, unit mechatronics, and scrapped units are all future failures to consider which will have an ultimate impact on the resilience of hardware. In software, customer configurations, issues relating to outside interference, and issues in which a restart was necessary all take the cake for largest future considerations, while legitimate software bugs are not as common. The human focus displays how the passage of time will affect the GSM-R team headcount, and indicates that by 2045, only 22% of current staff worldwide will still be around. Of course, all of this information is quite bulky, and in the hands of project or product management, potentially too much to sift through to be quickly useful and usable in a true corporate environment, such as the one in which GSM-R operates in. For this purpose, a decision tree was designed. This decision tree is intended to provide those same project and product managers a quick solution to the problems they may be facing. The tree covers all three focuses of the research, and indicates where GSM-R should be on the trendlines determined in the data analysis. Depending on how close the trendlines are followed, potential solution areas as determined in the literature review are offered to mitigate the trendline discrepancies. Naturally, there are always more steps to take after actually making a decision to solve a problem, and as such, a secondary flow that follows the decision tree was also designed. This secondary flow covers the thought process of weighing the option to not follow the advice of the decision tree versus following it, and also indicates the deep interconnection between the human focus and everything else. No matter how well planned for and maintained the hardware and software focuses are, if there are no people around to carry out the plans, it does not matter how much effort and thought was put into planning everything else.
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Master thesis (2026) - K. Kapllani, Aaron Ding, I. Nikolic
Requirements governance in complex system migrations remains fragmented, manual, and dependent on implicit knowledge spread across heterogeneous documents and stakeholders. This thesis investigates how a document-grounded, AI-assisted workflow can support requirements governance while keeping humans in control of consequential decisions, using the railway sector's GSM-R to FRMCS transition as its case. Following Design Science Research, seven design requirements were derived and operationalised in a staged three-agent prototype with role-differentiated human checkpoints. Evaluation on official FRMCS specifications showed five requirements fully met and two partially met, while exposing how a normalisation error propagated into a spurious conflict flag. The contribution is a set of explicit workflow design requirements with documented rationale, redistributing human effort from repetitive comparison toward targeted verification and authorisation.

Repository in GitHub to perform the work in n8n: https://github.com/kristikapllani/frmcs-requirements-governance-workflow ...

An evaluation framework for potentials and challenges

The European Union’s transition towards a circular and sustainable economy has driven the introduction of the Digital Product Passport (DPP) as a regulatory tool to improve product transparency, lifecycle accountability, and environmental stewardship. For electric vehicle (EV) batteries, mandated under Regulation (EU) 2023/1542, the DPP consolidates critical lifecycle data—including state of charge, temperature, charge cycles, and safety incidents—into a standardized, accessible format. This enables compliance monitoring, facilitates reuse and recycling, and significantly contributes to EU sustainability goals. However, translating these regulatory requirements into functional, IoT-enabled systems is challenging due to the dynamic nature of battery data and the complexity in system design and the stakeholder perspective in the battery value chain.

This study delivers a decision-support framework to address these challenges. The framework’s two core tools—an evaluation matrix for systematic comparison of IoT architecture capabilities against DPP requirements, and a trade-off table revealing key design interdependencies—equip stakeholders with practical instruments for early-stage system planning. Validation through eleven expert interviews from academia and industry confirmed the framework’s regulatory alignment, technical soundness, and adaptability across organizational contexts. Experts highlighted the value of the trade-off table in surfacing tensions such as edge–cloud processing balance, latency constraints, and cost–complexity trade-offs, and stressed the importance of lifecycle data updates, sensing accuracy, and stakeholder-specific access control. Their feedback directly informed refinements, resulting in a more intuitive, context-aware, and versatile toolset. The refined framework can be used by OEMs, solution providers, and policymakers to design, assess, and optimize IoT-enabled DPP systems that balance compliance, performance, and operational feasibility. ...

Approximate Computing for Vehicular Edge AI

Doctoral thesis (2025) - D. Katare, Marijn Janssen, Aaron Ding
System developers and automotive manufacturers have proposed and used advanced driver assistance systems to enable the deployment of next-generation applications in connected vehicles, such as cooperative perception and vehicle-to-everything communication, while addressing autonomy-related challenges. The example deployment of these applications and systems, including proof-of-concept levels, generally depends on vehicle sensor suites, communication units, large-scale memory systems, and high-performance computing (HPC) units, which are together responsible for sensing the vehicle's environment, efficient data processing, and application deployment using machine learning models or rule-based algorithms. These models and algorithms are generally computationally complex as they process sensed and transformed data using statistical algorithms and deep learning models, such as those using convolutional operations and attention mechanisms, for tasks including decision-making, actuation, system analysis, environment sensing, monitoring, and infotainment applications. The computational complexity of these algorithms and models further increases upon scaling, primarily due to high data volumes, which also requires deep convolutions or similar operations for data processing. These operations require high-performance computing units to meet the application's operational and performance requirements, including latency, throughput, and accuracy.

Generally, the AI models used in connected vehicle applications are designed with a prime focus on model performance metrics; however, their high energy consumption and resulting carbon footprints are often overlooked. Recent studies have shown that the computing requirements for autonomous and connected vehicles can themselves become a significant component of overall energy consumption. For example, large-scale deployment of on-board AI across a global vehicle fleet could generate carbon emissions comparable to those of today's entire data center infrastructure. The computing hardware inside autonomous and connected vehicles can consume hundreds to over a thousand watts when running multiple perception and decision models simultaneously. Since these vehicles are battery-powered, this computing energy directly reduces driving range and increases operational cost. At fleet scale, this translates into a substantial carbon footprint, even when vehicles are electric. Therefore, energy efficiency is a primary design requirement, not only for sustainability but also for maintaining vehicle usability, battery longevity, and cost-efficiency. This thesis addresses the disparity between the strong research focus on model accuracy and the limited focus on energy usage by developing and evaluating an energy-aware adaptive framework for AI-driven vehicular services, such as non-safety-critical perception and high-definition mapping applications. The framework achieves energy and runtime improvements through energy-aware training, resource allocation, and adaptive deployment of computationally intensive models.

Previous research has proposed developing energy-efficient solutions in the hardware and software domains. For example, hardware-related energy-efficient solutions include transitioning from high-end graphical processing units to specialized AI accelerators and integrated circuits, which can process neural networks and related operations more efficiently. Similarly, architectural shifts and software-level solutions include transitioning from the centralized computing approach to dedicated edge computing and tiny machine learning solutions. However, the research scope remains within hardware-software co-design and optimization. By specifically targeting software-level optimizations, this thesis explores approximate computing (AxC) as a mechanism to utilize the error resilience of AI models in the perception and latency-tolerant applications of the vehicle-edge computing ecosystem. By balancing a trade-off between quality of experience and energy efficiency, AxC provides opportunities to reduce on-board energy demands and resulting carbon footprints of vehicle and edge devices while maintaining acceptable application performance levels. To explore and optimize the trade-off between model performance and energy consumption for connected autonomous vehicle applications, the following research questions are addressed:

1) What are the requirements for enabling energy efficiency in data-intensive vehicular services?

2) Which components can enable task deployments energy-efficiently and collaboratively in vehicle-edge-cloud computing?

3) How can energy-efficient components be integrated into an energy-aware adaptive software framework?

4) Can the framework effectively balance the trade-off between energy efficiency and performance in vehicle-edge-cloud computing scenarios?

Building upon existing research and knowledge on energy-efficient computing, this thesis addresses the above-mentioned questions. By addressing (RQ1), this research identifies the technical and operational requirements to enable and integrate energy efficiency into data-intensive vehicular services. These functional requirements include performing high-level computations with minimal energy use and efficiently processing large data streams on edge devices. Secondly, to design and develop energy-saving components (RQ2), the thesis proposes software-level approximation schemes combined with variational inference for both training-time and post-training model optimization and acceleration. Third, contributing to (RQ2) and (RQ3), the research explores ML model partitioning and computing resource allocation mechanisms to utilize the distributed and heterogeneous nature of the vehicle-edge-cloud environment for distributed training and inference. These explorations aim to meet service-level objective deployment using lookup table-based mechanisms. Addressing (RQ3) and (RQ4), the thesis integrates these components into an energy-aware adaptive software framework. This framework provides optimized model training and deployment strategies for distributed training and inference on heterogeneous computing resources, while effectively balancing the trade-off between energy efficiency and on-device application performance.

This thesis utilizes the design science methodology, adapting principles from the Information Systems Research Framework (design-as-a-search-process). This approach ensures research rigor to develop artefacts based on the application domain and existing theoretical knowledge. Further within the process, it adds design knowledge to the existing knowledge base of the application domain. As the development cycle of the research methodology includes tests and experiments, the effectiveness of the developed artefacts can be seen through test and experimental evaluation. Applying the proposed software approximation schemes, model partitioning, resource allocation, and adaptive deployment strategies on the state-of-the-art models shows up to 40% improvements in energy saving for less than 7% quality or model performance degradation when compared to the full precision and central computing methods. Software approximation schemes include the design of approximate multipliers, probabilistic approximation mechanisms, approximating convolutional, and fully connected layers for CNNs/DNNs. For the next-generation and memory/compute-intensive vision transformer models, this work proposes software-level approximation schemes based on variational inference, combined with post-training quantization and quantization-aware training, which show up to 35% improvements in energy efficiency for 6-8% quality loss. As the backbone of these next-generation vision models also includes multi-precision operands such as 8-bit, 16-bit, and 32-bit in layers and channels, the research also explores the advantage of mixed-precision operation to facilitate a balanced trade-off between models' energy usage and accuracy.

This research is among the first to investigate energy-aware requirements for application deployment beyond the traditional approach that generally focuses on cloud-based offloading mechanisms and model compression in the context of connected vehicle services and systems. The evaluation of the energy-aware framework on the popular edge devices shows the contribution of the thesis within the scope of distributed model computing using edge AI and sustainable computing practices. The research is set within the area of tiny machine learning and green AI principles. Future research can further develop adaptive algorithms that dynamically optimize energy use in real-time and investigate predictive models under varying conditions. Additionally, exploring the integration of Approximate Computing with emerging technologies like neuromorphic computing can improve processing efficiency in vehicular systems. ...
Doctoral thesis (2025) - R. Sulastri, Marijn Janssen, Aaron Ding
Despite the recent expansion of digital lending platforms in developing countries, marginalized segments still face challenges in accessing credit. Many borrowers are excluded due to the absence of formal financial histories or insufficient profiles. Existing research primarily focuses on improving model accuracy and ensuring profitability rather than addressing inclusion. Hence, more inclusive digital lending systems are needed. Inclusion in this study refers to “the equitable access, distribution, and utilization of financial resources, ensuring that all societal segments, particularly underserved populations, can participate meaningfully in lending systems.” This definition emphasizes removing systemic challenges and fostering empowerment by enabling individuals to make informed decisions.... ...
Master thesis (2024) - Y. Ren, Aaron Ding, J. Zatarain Salazar, M. Westberg
Recent advancements in artificial intelligence (AI), particularly in deep learning, have significantly enhanced AI capabilities but have also led to more complex and less interpretable algorithms. This research addresses the challenge of Explainable AI (XAI) by focusing on enhancing the interpretability of AI decisions through the use of Explainable User Interfaces (XUI). The study identifies two primary knowledge gaps: the predominance of XAI research targeting technically skilled users, neglecting the end-user who often lacks technical expertise, and the insufficient exploration of user-centric design principles in real-world XUI applications.

The research adopts the Design Science Research Method (DSRM) to develop an XUI tailored for the FOKUS project, which uses Electrocardiogram (ECG) data to detect myocardial infarctions. The study emphasises the strategic application of interactive design principles such as complementary naturalness, flexibility in explanation methods, and responsiveness through progressive disclosure to improve the system’s interpretability. Notably, sensitivity to context and mind, though not initially implemented, emerged as a critical design principle from the analysis and was subsequently positioned at the pinnacle of a restructured pyramid model of design principles.

Key findings highlight the effectiveness of the selected design principles in enhancing interpretability and underscore the importance of involving stakeholders early in the development process to align the XAI and XUI with end-user needs. The research proposes a structured design approach framework for XUI, involving sequential phases from pre-XAI to XUI design, to systematically integrate user feedback and improve the design iteratively. The proposed framework restructured pyramid model of the design principles aim to guide future developments in XAI and XUI, enhancing their practical application and effectiveness in various contexts.
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Master thesis (2023) - J.M. Dannenberg, Aaron Ding, Ben Wagner
This master's thesis addresses a common problem of the adoption of IT automation; the nonoptimal use of the technology due to ineffective managerial communication. It searches for a solution by using the Design Science Research methodology to create a design artifact in the form of a managerial communication framework. This framework provides values to all stakeholders in the IT automation adoption process; the managerial level, the employees, and the technology provider. It improves managerial communication during the adoption process and identifies actionable guidelines for managers.

Narrowing down the scope of the thesis to the adoption of Robotic Process Automation (RPA) within the recruitment industry allows the research to be manageable within the constraints of a master's thesis. A literature review is used to investigate the knowledge base of the topic of the thesis. Additionally, semi-structured interviews with managers and employees are used as a means of collecting data from the environment. Combining these inputs, this research designs a model that explains the role of managerial communication in the effective adoption of IT automation. The model consists of four main components: managerial communication, motivation & vision, impact awareness, and the effective adoption of IT automation. It explains the constructs that were found relevant in this process and how they relate to each other. Several root constructs are used as a basis to create actionable guidelines to facilitate an effective adoption process. Together with the explanatory model, these guidelines form the managerial communication framework. The main goal of the framework is to bridge the gap between the manager's and the employee's views on the nature of the change. This study finds that managers often view the change as a process optimization, whereas employees view it as an organizational change. The managerial communication framework allows to identify these differences and act upon them.

This study not only designs the communication framework, but also evaluates its defined objectives with several experts. The results of these evaluation interviews demonstrate the validity and usability of the research conducted and the design artifact. Future research can extend the framework to other domains & technologies and tailor it to specific problem cases. Furthermore, the framework can be researched and evaluated in practice by conducting a case study. ...
Master thesis (2023) - N. Biermann, Aaron Ding, Gijsbert Korevaar
The metaverse is one of the most disruptive technologies to evolve from the digital transformation. While the potential use cases of creating an immersive virtual world are numerous, the vision of an industrial metaverse is only recently emerging as a concept from the technology. In the automotive sector, manufacturers are starting to use simulation, digital twin technology and Building Information Modelling (BIM) to build virtual factories in an industrial metaverse. The benefits of this innovation are believed to significantly boost production flexibility and efficiency, which is why manufacturers set up data-driven digital platforms to enable an industrial metaverse that interconnects multiple actors. How-ever, technical barriers still hamper the implementation of such platforms whose dependence on flawless data grows with the number of use cases for an industrial metaverse. Accordingly, quality insufficiencies of spatial data and the absence of automatic quality assessments to identify these insufficiencies are one of the most decisive barriers to a widespread adoption of industrial metaverse applications. This thesis examines this problem and investigates how data quality insufficiencies in an industrial metaverse en-vironment can be identified and overcome at the example of an automotive manufacturer that uses the Nvidia Omniverse digital platform to create virtual factory models. A design science approach is pursued to create an extension to the Omniverse software that identifies the most critical data quality insufficien-cies, derives key performance indicators (KPIs) and proposes preventive measures to induce a sustained data quality improvement. Thereby, this thesis lays the groundwork for future research emerging around the concept of an industrial metaverse and the remaining obstacles of digital platforms to enable its applications. The pursued DSRM approach to overcome such barriers is capable to serve as guidance for future research projects that pave the way for a gradual enablement of further industrial metaverse use cases in other industries. ...

A Multidisciplinary Analysis of the Next-Generation Vehicular Communication Network

Master thesis (2023) - L. Balzasch, Aaron Ding, I. Nikolic, D. Katare
Yearly, 20.000 fatalities are recorded in road accidents on European roads alone. This situation is far more severe (1.3 million humans) when the global scope of road accidents is considered. Thus, Policymakers are initiating policy programs to overcome this challenge by enhancing safety and maximizing the associated positive economic impact. The EU committed to minimizing fatalities by 50% by 2030 and to be net zero long-term by 2050.

To achieve this, vehicular communication networks (VCN) can play a crucial role. It is anticipated that the connectivity and communication of vehicles with their environment contribute to these goals by enabling safety functionalities or improving the traffic flow. Hereby, it is crucial to understand that this communication requires an infrastructure that assists the vehicles and ensures data transmission and operation. However, due to the European size and heterogeneity of the member states, realizing a vehicular communication network on a large scale requires increased coordination and collaboration efforts. Currently, no vehicular communication network has been introduced working EU-wide. Hence, this resembles a potential for future road improvement. To realize this, decision-makers must understand the complex properties and system interrelationships of such a large-scale infrastructure project so that a common VCN can be designed to ensure interoperability and robust functionalities across the EU. This work contributes to the aforementioned challenge by addressing the following research question:

What are fundamental socio-technical factors to consider in a future European vehicular communication network design?

A mixed approach that combines Peffer´s design science research framework and system engineering methodology is used to synthesize the contributions. By this, a vehicular communication network mission, stakeholder, and system analysis are presented in this work. Further novel and scientific sound requirements and stakeholder insights are synthesized by systematically reviewing 57 articles and interviewing 15 experts from the institutional, scientific, and industry domains. In this context, a stakeholder classification for vehicular communication networks, a 4-layer stakeholder complexity model, and a system requirement structure from a system perspective are proposed to contribute to the VCN understanding and future design attempts. Further, the reflection of the socio-technical interrelations between the technical and social VCN subsystems are subjects of this work.

The conclusion is that the reflection on socio-technical system properties plays a critical role in vehicular communication network design. Further, a future vehicular communication network consists of a magnitude of stakeholders with high interest and power; thus, designers must understand the characteristic of their co-evolutionary cooperative development. Hence, a multidisciplinary understanding and approach are critical for designers. Furthermore, the geographical segregation of designing and decision-making in a future vehicular communication network is identified, and certain goals/issues should be addressed in the respective layer. Another major conclusion is that the VCN discussion is determined more by social and socio-technical conditions, such as stakeholder cooperation/coordination and interoperability, than by technical feasibility.
These findings result in three main research contributions, which are summarized as follows:

- A 4-layer stakeholder complexity model contributing to the understanding of VCN development is contributed.
- An approach of integrating the socio-technical system perspective on the complex, large-scale infrastructure VCN project is contributed. This focuses on the processes and requirements between social and technical subsystems, addressing the integration of heterogeneous stakeholder interests.
- A comparison is made between scientific focus, stakeholder needs and objectives, and expert insights, highlighting the mismatch and alignment of requirements. This contributes valuable insights for adjustment and further research in the VCN community.

Further methodological contributions can be concluded:
- The design science research approach is aligned with systems engineering iso standards and methodology.
- The design science research framework is used as an approach to address the complexity of VCN systems. This novel perspective helps VCN stakeholders design solutions for their field problems.

The results have implications for designing stakeholders in a VCN. Based on the analysis, it is recommended that policymakers identify and extend common objectives with the industry to establish public-private business cases. Further, vehicle manufacturers should participate and embrace the transition to a vehicular communication network by cooperating strongly with stakeholders. In addition, implementing the relevant technologies to communicate with the heterogeneous infrastructure is suggested to shape future infrastructure connectivity development. Lastly, the lack of socio-technical reflection in scientific literature is identified. Hence, scholars should elaborate on the interactions and interrelationships between the social and technical subsystems in future work. ...

The development of a framework to assess how interpretable Explainable Artificial Intelligence is for laypeople

Master thesis (2023) - D.A. Lensen, Aaron Ding, M.E. Warnier, M. Westberg
Explainable AI (XAI) systems are rapidly gaining significance. While frameworks for XAI interpretability for experts abound, metrics for laypeople’s comprehension are absent. This study addresses this gap by investigating interpretability factors from both developer and layperson perspectives. The core research question is: "How can XAI developers assess to what extent XAI is interpretable for laypeople?".

Applying the Design Science Research Methodology, findings from multiple literature reviews are combined to construct a preliminary XAI interpretability framework for laypeople, featuring crucial factors and their relationships, as well as associated principles. The proposed framework underwent validation through semi-structured interviews with 12 XAI experts, informing revisions and refinement of our key principles. Subsequent layperson surveys, considering a specific use case, offered insights into preferences about interpretability factors, informing further refinement.

The final theoretical framework highlights pivotal factors including simplicity, transparency, comprehensiveness, complexity, clarity, generalizability, trustworthiness, explanation fidelity, model fidelity, intentionality, relevance, affordance, coherence with prior beliefs, and actionability. Surrounding the framework are key principles emphasizing trustworthiness, relevance, simplicity, clarity, coherence, intentionality, actionability, fidelity, contextualization, and ethical considerations, serving as actionable guidelines for XAI developers and researchers.

The implications of the study are profound, offering valuable insights for advancing XAI research and system design. The refined framework and principles act as a foundation for both novice and experienced XAI developers, fostering interdisciplinary research among AI, human-computer interaction, psychology, and philosophy experts. These findings can drive the responsible adoption of AI systems across sectors like healthcare, finance, and transportation, while informing policies and regulations governing AI technologies. Our study promotes responsible AI practices, enhancing user trust and understanding, while facilitating the creation of more effective guidelines and standards. ...
Master thesis (2023) - B.J.J.J. Warringa, Aaron Ding, L.A. Tavasszy, Martijn Otten
Modern manufacturing operations rely on accurate, real time data for efficient operation and control of the production process. Many small and medium sized enterprises (SMEs) still operate with legacy assets, limiting their access to a clear data picture. This thesis research and its design solutions help SMEs gain real time insights into their manufacturing process, resulting in production efficiency gains and helping identify process improvements. These factors help manufacturing SMEs stay competitive in an ever-increasing competitive global business climate.

The primary objective was to identify the requirements for enabling real-time insights into SME manufacturing operations. Findings suggest that in-house infrastructure can facilitate the required transparency, provided it is lightweight and minimalistic. The essential factor is to transform machine-generated data into insightful metrics for relevant stakeholders. A significant aspect to consider is the human element— the adoption and commitment of employees towards the technology.

Upon analyzing the benefits, the research underscores that real-time insights lead to enhanced production efficiency. By offering an objective view into production data, SMEs can quickly identify and rectify bottlenecks. Moreover, such transparent insights improve communication within teams, empowering employees by showing the direct impact of their performance on overall production, thus boosting their morale and productivity.

The study also evaluates the key features needed to make these real-time insights actionable. Contrary to initial assumptions that a single KPI would suffice, it became evident that a more comprehensive view—incorporating metrics such as Overall Equipment Effectiveness (OEE)—was necessary. For SMEs with diverse product portfolios, additional parameters like average batch size, cycle time, and machine power-on time provide valuable context.

Lastly, the implemented design framework showcases the positive impacts of real-time insights on production. Access to objective metrics aids in performance evaluation, problem identification, and the formulation of improvement strategies. An essential feature highlighted is the predictive capability that guides resource planning, thus minimizing errors.

This research emphasizes that manufacturing SMEs with legacy assets can achieve real-time insights into their processes through cost-effective, lightweight solutions. The proposed methods and guidelines, as discussed in detail in the design section, are foundational for SMEs aiming to modernize their operations and bridge the knowledge gap in implementing real-time monitoring. By offering universal access to transparent production metrics, SMEs can optimize their processes, ensuring better efficiency and communication at all levels of operation. ...
Doctoral thesis (2023) - Wiebke Hutiri, Marijn Janssen, Aaron Ding
From smart phones to speakers and watches, Edge Al is deployed on billions of devices to process large volumes of personal data efficiently, privately and in real-time. While Edge Al applications are promising, many recent incidents of bias in Al systems caution that Edge Al too, may systematically discriminate against groups of people based on their gender, race, age, accent, nationality and other personal attributes. More so, as the physical restrictions of Edge Al, together with the complexity of its heterogeneous and decentralised operating environment pose trade-offs when deploying Al to the edge.

This thesis is motivated by the societal demand for trustworthy Al, by the propensity of Al systems to be biased, and consequently by the need to detect and mitigate bias in diverse Edge Al applications. To address this need, this thesis develops design patterns for detecting and mitigating bias in the development of Edge Al systems. The design patterns present a generalisable approach for capturing established practices to detect and mitigate bias in machine learning. They make this knowledge readily accessible to researchers and practitioners that develop Edge Al, but who have limited prior experience with detecting and mitigating bias. ...
Master thesis (2022) - D. HarĐarson, J. Rezaei, A. Ding, J.E. Bieger
The fourth industrial revolution is upon us, and entire industries are seeking to reap the benefits resulting from the use of the technologies that the revolution brings. Waste management is one of those industries. The rapid growth of the human population causes more consumer goods to be produced every day. This underlines the importance of effective and efficient waste management.

The Internet of Things (IoT) has proven to be a useful tool to increase the efficiency of waste collection and while many waste management organizations are beginning to adopt these solutions, many are struggling to fully adopt and implement the technology. It is still unclear, due to lack of research, what factors are hindering the adoption and implementation of IoT technology in these organizations and how the process can be improved. The research scope of this study was three-sided: Industry specific, organizational, and technological. The focus was set on the waste management industry, and the intra-organizational barriers that hindered the adoption and implementation process of IoT-powered fullness sensors. The core problems at hand were identifying what the intra-organizational IoT adoption barriers are, what are the most influential barriers, what mitigation strategies can be employed to mitigate these barriers and how it can all be illustrated within an IoT adoption and implementation process framework.

The main research question formulated to answer these problems is: How can the adoption and implementation process of IoT-powered fullness sensors in waste management be improved? Four sub-research questions were formulated that held partial information which were needed to answer the main question.

The overarching structure of this research project follows the Design Science Research Methodology (DSRM). DSRM provides a commonly accepted approach which involves a rigorous six step activity process for creating and evaluating an IT artifact intended to solve organizational problems. This methodology was altered to fit this particular study, and thus followed five of the six steps. An analysis of literature was performed to identify the general intra-organizational innovation adoption barriers. An exploratory case study was conducted within a large waste management company in Iceland which recently decided to install IoT-powered container fullness sensors to increase the efficiency of their processes. The case study revealed, through interviews, which of the identified barriers had the most significant effect on their adoption and implementation process. Expert interviews and desk research were used to formulate strategies that organizations could employ to mitigate the most prominent barriers identified. After all the interviews had been transcribed, coded, and categorized, data triangulation was used where data from multiple different interviewees was compared and analyzed. From the results of these research efforts, a framework explaining the IoT adoption and implementation process for waste management was then designed and developed. Expert interviews were again conducted to evaluate the framework and confirm the framework’s theoretical validity, application and expected performance in terms of its set goals and objectives.

The results of this research are the identified general intra-organizational innovation adoption factors, the most influential factors affecting IoT adoption and implementation within waste management along with their proposed mitigation strategies as well as a designed IoT adoption and implementation process framework in which these strategies are incorporated. The general intra-organizational innovation adoption factors identified are: Leaders’ attitude towards change, Centralization, Complexity, Formalization, Interconnectedness, Organizational slack, Size, Culture, Degree of risk-taking, End user behavior, Strategic objectives and Uncertainty of business benefits. The following are the three most influential barriers to IoT adoption and implementation within waste management and their proposed mitigation strategies: The first barrier is Uncertainty of business benefits and its proposed mitigation strategies are: Gaining a Proof of Value (PoV) and Incremental scale-up. The second barrier is Strategic objectives and its proposed mitigation strategies is: Using information to gain a competitive advantage. The proposed mitigation strategy for the third barrier, Degree of risk-taking, is Renting with an option to buy.

The applicability of the designed framework in a real-life setting is yet to be tested. Future research could involve using the framework and applying it in an actual implementation of IoT fullness sensors in a waste management organization.
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Master thesis (2021) - A.D. Poelman, A.Y. Ding, P.H.A.J.M. van Gelder
With the advent of a smart society and an era of connectivity, there remain a numerous amount of challenges yet to be solved. One of the key IoT innovations analysed in this research is known as Unmanned Aerial Systems (UAS). UAS, or drone technologies, allow carrying out repetitive and dangerous tasks with almost no human intervention or supervision (Fernández-Caramés, Blanco-Novoa, Froiz-Míguez & Fraga-Lamas, 2019). The advent of drone utilisation in both public and civil domains has led to application areas such as realtimemonitoring and surveillance, parcel delivery, search and rescue missions (e.g. ER), remote sensing in agriculture and multiple other application domains (Valavanis & Vachtsevanos, 2015). However, the fast pacing development of interconnected devices and systems has outrun the human understanding and experience of usage, imposing challenges with regards to technical security, trust and of course privacy (Coetzee & Eksteen, 2011). Subsequently, most drones are limited to computing, storing and sharing data, making them vulnerable to adversarialattacks. A need for a more responsible adoption of drone-use exists and must be fulfilled with care. To this, a blockchain-based solution is proposed.The focus of this research is on a Dutch independent agency part of the Ministry of Agriculture, Nature and Food Quality, called the Netherlands Food and Consumer Product Safety Authority (NVWA). They have been actively using drones since 2017 and their main tasks consist of supervision, risk assessment and risk communication with the goal to protect the human and animal welfare (NVWA,n.d.). An explorative research approach was taken whereby the current bottlenecks experienced by the NVWA were identified and visualised, by means of desk research and semi-structured interviews. Subsequently, the sociotechnical effects of the use of drone detecting services by the NVWA were identified to obtain the key values for a responsible redesign. In this way, the role of the values, an understanding of the roles of institutions realizing these values, and the stakeholder engagement is understood. After identifying the open issues and conflicting values, a redesign phase began with the trade off between three mitigating security techniques.Blockchain technology is found to be the most suitable security technique in this research and fills in the ’lack of transparency’ gap which is crucial for a responsible redesign. Although it hasn’t reached full maturity and could induce undesired delays, it increases the security level of the organisation significantlyand takes into account the key values security and privacy. Moreover, the data managing method allows users to validate, maintain and synchronize the content of a transaction ledger which is replicated across the other users in the network (Tapscott & Tapscott, 2017).The solution has proven to work in existing literature and automotive contexts and is therefore generalisable in multiple on-going projects of the NVWA. Subsequently, the novel data managing method could be used as for revenue models such as digitised inspections. This indicates future growth options andpotential competitive advantages. All in all, the benefits outweigh the uncertainties of this technologyand it is believed that a blockchain based solution will be the next big step to achieve more responsible implementation of drones. ...

Towards a portable architecture decision flow for designing a server-based payment architecture

Master thesis (2021) - V. Vissers, Y. Ding, A.F. Correlje, R. van Bergem

Research to the design for an IT architecture to enable value-based healthcare in the Netherlands

Master thesis (2021) - F. de Jonge, A.Y. Ding, A. Verbraeck
The sustainability of the Dutch healthcare system is under severe pressure with increasing expenditure, more demand for care and a shortage of healthcare professionals. In the current healthcare system, providers are rewarded for increasing volume, but not for adding value, which only exacerbates the situation. Value-based healthcare (VBHC) is a candidate framework to reform the current healthcare system into an outcome-based system. Information systems are essential for the implementation of VBHC to execute outcome and cost measurements and collaborate across the care cycle. A literature review shows that there is a knowledge gap in the scientific literature to the architectures and components for such value-enabling information systems. This thesis aims to fill that gap by identifying and designing the essential components for a value-enabling IT architecture for the Dutch healthcare system.
The Information Systems (IS) research framework of Hevner et al. (2004) is adopted to guide the research. The environmental analysis shows several deficiencies in the as-is architecture for VBHC including a lack of patient-centredness, inaccessible or unavailable data, and complex to extract and integrate data. Preliminary semi-structured interviews reveal that, besides IT barriers, there is a deeply rooted trust issue among stakeholders which hampers successful implementation of VBHC. It is found that trust is often related to transparency and can be managed. Increasing transparency in the healthcare architecture would allow for (i) continuous quality improvements, (ii) improved decision-making, (iii) positive financial stimulus and (iv) patient empowerment. The design activities aim to facilitate VBHC through integrating components that reduce or eliminate the IT barriers and increase transparency. Another round of semi-structured interviews is carried out to find the principles, requirements and components for the design. The overall design developed uses three types of environment: a Healthcare Information System (HIS) used by caregivers, a Personal Healthcare Environment (PHE) used by patients and a Quality Registration System, available to all stakeholders. The design and components are evaluated with an expert panel. The most essential components are: PHE, HIS, Quality Registry system, Clinical building blocks (Zibs), terminology standards, a data integration centre, logging and monitoring services, measurements and evaluations, auditing IT and care processes and an intermediary that stimulates improvement and collaboration. The expert panel reached a consensus that transparency in healthcare would contribute to solving some of the problems, but it will not solve the core problems that lie within the healthcare structure. There are several areas recommended for future research. First, the components should be evaluated with a broader expert panel to increase the validity. Second, the PHE is an essential component, but still in its infancy. It is recommended to further evaluate the utility for VBHC. Third, blockchain technology might enhance the design due to its inherent characteristics that offer transparency. Fourth, further research on the privacy-utility trade-off in the context of VBHC is recommended. Finally, interoperable systems rely on a shared and uniform language. It is recommended to research which standards have the highest potential to facilitate the architecture components.
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An exploratory study of the restrictions on accounting the energy consumption of training deep learning models in data centers

The impact of cultural differences on the acceptance and use of multi-sided platforms

Information technology innovation has given worldwide access to each other, to information, and to entirely new digital platforms forming new markets over the last decade. Multi-sided digital platforms are platforms that mediate between different groups of users, both buyers and sellers.
With IT the multi-sided platforms are exploiting the economic phenomenon known as network externalities, increase the users, increase the value of the platform.
However, the cultural differences between countries can make or break a successful entry into another national market. Simply copying the monolithic algorithms has not been the answer, as recently admitted by Amazon's departure from China.
This project looked at seemingly similar cultures (the Netherlands and Germany) to identify if the macro-level cultural dimensions influenced the acceptance and use of multi-sided platforms. This was examined through a survey that assessed the acceptance and use of online food delivery platforms, a prime example of multi-sided platforms.
The cultures do have significant differences, but their impact on the acceptance and use of online food delivery platforms was non-significant. The acceptance of online food delivery platforms still followed a 10-year different diffusion, but the significant differences on macro-level cultural dimensions did not relate to this acceptance.
An interesting conclusion to this project is that the countries, expecting to have similar cultures, are significantly different and the data gathered proves to be more substantial than this project could investigate. The UTAUT2-model did
show a significant acceptance and use of online food delivery platforms, which shows that the online food delivery platform has successfully expanded cross-culturally in the case of the Netherlands and Germany. ...

Towards a Sustainable Business Model

Master thesis (2020) - S. Stoccuto, Y. Ding, G. van de Kaa
Agriculture is a fundamental element of every economy. However, global issues such as climate change, land deterioration, and a continuously growing population are strongly impacting the sector. It is estimated that by 2050 the population will increase by two billion, reaching 9 billion people to be fed. In the past 34 years, researchers investigated the use of potential technologies such as Artificial Intelligence (AI), Internet of Things (IoT), Machine Learning (ML), robotics, etc. The readiness of these technologies and the positive impact that they have on the sector is proven by numerous studies. However, these technologies are still not diffused enough within common farming practices. Adoption rates are very low, as well as full understanding of the technologies from the farmers’ perspective. Without a shift towards the digitalization of farming practices, the agriculture sector could be damaged, impacting both the future of society and general economy. This is why a change in the actual regime of production is needed: from traditional agriculture to AgTech. In this work, through interviews with winegrowers and analyses of technologies proposed by vineyards start-ups, an understanding of future market development is derived. The concept of sustainability is investigated as one of the major drivers towards the change of regime. More specifically, the study has been conducted on the viticulture domain, tackling in a very context-specific manner the problems concerning this branch of the field. A set of to-be-used criteria for start-ups business model creation is derived by the main needs of the growers and the degree of technology adoption observed. The criteria, or archetypes, have been developed on the base of the Sustainable Business Model Archetypes. A new model is proposed, which is a starting point towards the shift of regime and the digitalization of the agriculture field. ...
Master thesis (2020) - Davey Nijland, Y. Ding, L.A. Tavasszy
Recent developments in technology innovations show that huge efficiency improvements can be made in the manufacturing industry. Moreover, companies that adopt the new innovations, associated with Industry 4.0, can create a huge competitive advantage. However, these rather conservative businesses are slow adopters and usually wait for proof-of-concept before actual implementation. Since this industrial revolution, Industry 4.0, is still in its infancy, more research is required to get to full adoption. Although the industry still awaits proof-of-concepts, many different case studies have been performed, and with success! These clearly exhibit the versatility of the Industry 4.0-philosophy, makingwidespread adoption just a matter of time. One of the identified reasons for this lag in adoption is the lack of clear implementation guides despite the thorough research and redundancy of technology. Due to the holistic Industry 4.0-concept, many practitioners lose sight on how and what to implement. Various researches proposed the creation of a widely applicable implementation model, but this is yet to be developed. One of the prominent issues related to creation such model is the all-encompassing nature of Industry 4.0; it includes novel innovation in supply chains, in factories, and even in the products manufactured. Since there are clear differences between these ’applications’, a generic overarching model seems unreasonable considering the immense amount of variables to consider. This thesis depicts the first ever-made implementation model specifically aimed at improving raw material supply & planning in complex manufacturing companies.Supply & planning processes are the closest connections between a manufacturers’ own operations and its closest neighbours in the supply chain; i.e. suppliers and customers. Tapping into this specific field of operations enhances the utilization of Industry 4.0 both on the supply chain and manufacturing aspects. Through answering the main question, and several subquestions, relevant information is gained that enable the construction of an implementation model. The design of such implementation model includes a step-by-step approach for practitioners of manufacturing companies, and a clear description on what to consider at each step. Creation of the artefact (i.e. implementation model) happens by explaining the research question: How can Industry 4.0 be implemented into supply and planning departments of complex manufacturing companies using an implementation framework?By means of a design science research methodology (DSRM) the Industry 4.0 supply & planning implementation framework is designed. Through 6 pre-determined steps; (i) problem identification, (ii) objective definition, (iii) design & development, (iv) demonstration, (v) evaluation, and (vii) communication, it ensured that all relevant stages are included to construct a scientific substantiate artefact. Three of these elements in particular were considered to be main constructs of the thesis report. Through the objective definition stage, qualitative research in the form of interviews and literature review imposed what had to be included in the implementation model. In the design & development stage this information was casted into a mold, thereby being the first result to the thesis’ ultimate goal. The demonstration phase was assigned to check the applicability and effectiveness of the model by putting it into practice. Altogether a significant base of information was collected, obtaining the firstconceptual implementation model for Industry 4.0. In the existing tight markets in which various manufacturers operate, the utilization of improvement technologies is high. Techniques derived from methods like Lean, Agile and Six Sigma are used on a daily basis. Because companies are familiar with the use of these models, the adoption of newer versions becomes straightforward. Consequently, the implementation model is a derivative of such method, namely the DMAIC (Define, Measure, Analyze, Improve, and Control). Since these overarching steps do not provide sufficient information for actual implementation, extra delineation is applied through a combination of the Continuous Quality Improvement model and practitioners’ experiences. Via combination of the two, a first model consisting of 11 steps (i.e. within the 5 DMAIC stages) was constructed.The implementation model starts with goal identification, in which the companies’ digital transformation (i.e. Industry 4.0-adoption) strategies are adapted to local needs. Subsequently, the business processes are investigated thoroughly. By clever modification of an existing model called RAMI (ReferenceArchitecture Model Industrie 4.0), a standardized approach for identifying the key aspects of the business processes was obtained. Using the results of this business process modelling allows to diagnose the so-called key variables that have a considerable effect on the performance of operations. The top five of these key variables provide the focus for the execution of the consecutive steps. Data and information about these 5 variables is gathered through a process of replacing paper forms by digital forms and through connection of existing Operational Technology (OT) systems with Information Technology (IT) systems. Once all the relevant data for the five variables is obtained, a data analysis follows. Examining the inconsistencies in this data pinpoint the location where data enhancement (i.e. Industry 4.0-adoption) will significantly improve the process. Defining the performance indicators then help to know the business’ existing performance and allow comparison with future results, but also help users to monitor real-time process-efficiency by means of a dashboard. According to the Key Performance Indicators (KPI’s) chosen, technology introduction can finally happen. Thirteen different enabling technologies were identified during the literature research, providing practitioners a wide portfolioof options in their Industry 4.0-implementation. Shortly after implementation follows continuous monitoring according to the aforementioned KPI’s. By carefully assessing the business process’ performance, improvement studies can be performed and actual improvement of the system can take place. In the final stage it is evaluated whether the implementation was effective and what lessons-learned should be brought to the next technology-implementation. To test whether the implementation model indeed fulfil its vows, a test run is performed at an agriculture fertilizer manufacturing facility that definitely classifies as a complex factory according to the definition of this thesis (i.e. large portfolio of products and raw materials). The first few stages were quite obvious in their execution, mainly because of the clear instructions given. Especially the modified RAMI model gave useful insights and abandoned the requirement of complete Business Process Mapping which is very time consuming. Various key variables were obtained using a quality team. Since the majority of data -for these key variables- was already available, it was only a minor effort to obtain the rest using either OT-IT merger or digital reporting. In the case study, the data analysis stage was the most demanding task in both time and extra investigation. After describing the KPI’s related to the data analysis and describing the technology introduction stage, the real version of the case studyhad come to an end due to time and resource limitations. Continuous monitoring, improvement, and evaluation were further concluded through the sense of ’modelling’, where providing examples and describing the expected outcomes served as enclosure of the first trial. Although the model was designed with extra care and the input from both the literature review and the interviews were significant, some limitations still apply. It was observed that some of the stages were not definitive enough, making the actual goal of each step rather vague. As a result, some stages could take considerably more time than necessary, diminishing the model’s effectiveness. Moreover, the power of the data analysis, as described before, was truly reliant on my experience in statistical and data analytics. Therefore, the current data analysis-description requires more attention to advance the usefulness of this stage regardless of the users’ experience. Finally, the effectiveness and generalizability of the model were only touched upon briefly and require more in-depth investigation before claiming its novelty. ...