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Dun, H. (author), Tiberius, C.C.J.M. (author), Diouf, C.E.V. (author), Janssen, G.J.M. (author)Terrestrial positioning systems are being investigated as the complement to the global navigation satellite systems (GNSS), to provide precise and reliable positioning services in a GNSS-challenged environment. In this paper, we present the positioning performance of a ground-based positioning system, in which a multiband OFDM burst is used...conference paper 2021
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Kleiman, F. (author), Janssen, M.F.W.H.A. (author), Meijer, Sebastiaan (author)The adoption of open data policy-making by governments is limited due to different types of constraints. Civil servants are reluctant to open their data to the public for many reasons. The lack of knowledge of benefits that can be produced by the release of data and the overestimation of risks and operational complexity seems to decrease...conference paper 2021
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Luthfi, A. (author), Janssen, M.F.W.H.A. (author)Stakeholders can have different views on the opening of data, and conflicts may arise between them. Several causes of disputes may arise during the decision-making process due to the diverse objectives, interests, and needs among the stakeholders that perceive their desires. Yet, no stakeholder taxonomy exists to guide this decision-making...conference paper 2021
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Di Staso, D. (author), Kleiman, F. (author), Crompvoets, Joep (author), Janssen, M.F.W.H.A. (author)The implementation of open data policies requires the efforts of many public employees across different levels of government, who may be unaware of the benefits and risks of open data. Serious games have demonstrated potential for training in a professional environment. For this research, a collaborative digital serious game about open data...conference paper 2021
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Wouters, Stijn (author), Janssen, M.F.W.H.A. (author), Crompvoets, Joep (author)Different actor roles in inter-organizational digital public services are often neither understood nor acknowledged. This can result in challenges regarding the proper design and result in a lack of adoption of these services. In the literature, there exist various taxonomies outlining roles such as users, consumers or co-creators, although...conference paper 2021
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Kazaz, T. (author), Janssen, G.J.M. (author), van der Veen, A.J. (author)The multipath radio channel is considered to have a non-bandlimited channel impulse response. Therefore, it is challenging to achieve high resolution time-delay (TD) estimation of multipath components (MPCs) from bandlimited observations of communication signals. It this paper, we consider the problem of multiband channel sampling and TD...conference paper 2020
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Kazaz, T. (author), Coutino, Mario (author), Janssen, G.J.M. (author), van der Veen, A.J. (author)In this paper, we focus on the problem of blind joint calibration of multiband transceivers and time-delay (TD) estimation of multipath channels. We show that this problem can be formulated as a particular case of covariance matching. Although this problem is severely ill-posed, prior information about radio-frequency chain distortions and...conference paper 2020
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Janssen, Suzanne (author), Fu, A. (author), Cvetkovic, M. (author), Palensky, P. (author)The rapid growth of rooftop solar, and on the rise technologies such as electric vehicles and heat pumps, is leading to congestion problems in low voltage distribution networks. If not dealt with, the congestion will prevent the installation of further units limiting the pace of the energy transition. Energy Storage Systems (ESS) are often seen...conference paper 2020
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Dun, H. (author), Tiberius, C.C.J.M. (author), Diouf, C.E.V. (author), Janssen, G.J.M. (author)Time-based ranging accuracy is inversely proportional to the signal bandwidth. A larger the signal bandwidth leads to a higher accuracy of time delay estimation, but more complex hardware is needed. Alternatively, we explore the idea of using multiple narrow signal bands (e.g., 10 MHz of each) to create a large virtual signal bandwidth, which...conference paper 2020
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Pinheiro Junior, Luiz (author), Alexandra Cunha, Maria (author), Janssen, M.F.W.H.A. (author), Matheus, R. (author)There are large varieties of governmental organizations using clouds in different ways. The purpose of this article is to explore and classify the types of public organizations using cloud computing. This will help to improve our understanding of cloud adoption and use by governments. For this, a systematic review of literature on cloud...conference paper 2020
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Lemke, Florian (author), Taveter, Kuldar (author), Erlenheim, Regina (author), Pappel, Ingrid (author), Draheim, Dirk (author), Janssen, M.F.W.H.A. (author)The emergence of super-applications is a complete game changer in how future governments will deliver e-services and interact with their citizens. With respect to this, the scope of currently established e-government stage models is exhausted. Therefore, this article proposes a “provident stage” as an extension of the Layne and Lee stage...conference paper 2020
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van Donge, W. (author), Bharosa, Nitesh (author), Janssen, M.F.W.H.A. (author)Comparable to the concept of a data(-driven) enterprise, the concept of a ggovernment as data (-driven) enterprise' is gaining popularity as a data strategy. However, what it implies is unclear. The objective of this paper is to clarify the concept of the government as data (-driven) enterprise, and identify the challenges and drivers that...conference paper 2020
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Purwanto, A. (author), Zuiderwijk-van Eijk, A.M.G. (author), Janssen, M.F.W.H.A. (author)Previous research assumes that poor quality of Open Government Data (OGD), OGD portals, and the services provided for OGD may result in reduced trust of citizens in OGD. However, studies that empirically test this assumption are scarce. Using the Information Systems (IS) Success Model as a theoretical basis, this study aims to examine the...conference paper 2020
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Brous, P.A. (author), Janssen, M.F.W.H.A. (author), Krans, Rutger (author)More and more, asset management organizations are introducing data science initiatives to support predictive maintenance and anomaly detection. Asset management organizations are by nature data intensive to manage their assets like bridges, dykes, railways and roads. For this, they often implement data lakes using a variety of architectures...conference paper 2020
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Kleiman, F. (author), Meijer, Sebastiaan (author), Janssen, M.F.W.H.A. (author)The actual opening of government data is done by civil servants operating within their institutional environment. As such, the institutional environment and their behavior towards the opening of data is key to increase the quality and quantity of open data. However, few studies have analyzed the behavior of government professionals towards...conference paper 2020
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Luthfi, A. (author), Rukanova, B.D. (author), Molenhuis, Marcel (author), Janssen, M.F.W.H.A. (author), Tan, Y. (author)Open government data initiatives are part of the endeavor process of governments to show that they are accountable and transparent organizations. Opening more datasets to external data analytics providers or other government organizations holds the potential to help governments to improve their processes by promoting a better understanding and...conference paper 2020
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Hillege, Roderic H.L. (author), Lo, J.C. (author), Janssen, Christian P. (author), Romeijn, Nico (author)This paper investigates whether mental workload can be classified in an operator setting using unobtrusive psychophysiological measures. Having reliable predictions of workload using unobtrusive sensors can be useful for adaptive instructional systems, as knowledge of a trainee’s workload can then be used to provide appropriate training level...conference paper 2020
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Luthfi, A. (author), Janssen, M.F.W.H.A. (author), Crompvoets, Joep (author)Various types of stakeholders are often involved in the process of deciding to open data. However, the influence of multiple–actors on the decision-making process is ill-understood. Stakeholders play different roles and have different interests in opening and analyzing datasets. The objective of this paper is to understand the influence of...conference paper 2020
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Diouf, C.E.V. (author), Dun, H. (author), Kazaz, T. (author), Janssen, G.J.M. (author), Tiberius, C.C.J.M. (author)Global Navigation Satellite Systems (GNSS) are nowadays the most common solutions used to cope with Positioning-Navigation Timing (PNT) applications demands. GNSS are relied on in very diverse contexts and domains, yet the interest in systems such as GPS, GALILEO and Beidou is continuously increasing. However, and in particular for safety...conference paper 2020
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van Engelenburg, S.H. (author), Rukanova, B.D. (author), Hofman, Wout (author), Ubacht, J. (author), Tan, Y. (author), Janssen, M.F.W.H.A. (author)Governance requirements for systems supporting information sharing be-tween businesses and government organisations (B&G) are determined by a high variety of stakeholders with often conflicting interests. These conflict-ing interests can hamper the introduction and scaling-up of ICT-innovations that change their roles and authorities. We...conference paper 2020