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Raftopoulou, M. (author)Following the trend of previous years, the number of devices, and hence the traffic in cellular networks is increasing. Moreover, new applications with stringent requirements are envisioned. Examples of such applications include collaborative learning and coverage extension with drones. To accommodate the traffic with its respective Quality of...doctoral thesis 2024
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Zatarain Salazar, J. (author), Kwakkel, J.H. (author), Witvliet, Mark (author)Evolutionary Multi-Objective Direct Policy Search (EMODPS) is a prominent framework for designing control policies in multi-purpose environmental systems, combining direct policy search with multi-objective evolutionary algorithms (MOEAs) to identify Pareto approximate control policies. While EMODPS is effective, the choice of functions...journal article 2024
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Aslan, F.A. (author), Iosifidis, G. (author), Ayala-Romero, Jose A. (author), Garcia-Saavedra, Andres (author), Costa-Perez, Xavier (author)O-RAN systems and their deployment in virtualized general-purpose computing platforms (O-Cloud) constitute a paradigm shift expected to bring unprecedented performance gains. However, these architectures raise new implementation challenges and threaten to worsen the already-high energy consumption of mobile networks. This paper presents first...journal article 2024
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Zografou, I. (author), Galanaki, E. (author), Pachos-Fokialis, N. (author), Deligianni, I. (author)Purpose: Previous literature has identified human resources as a key source of competitive advantage in organizations of all sizes. However, Small and Medium-sized Enterprises (SMEs) face difficulty in comprehensively implementing all recommended Human Resource Management (HRM) functions. In this study, we shed light on the field of HRM in...journal article 2024
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Mukhopadhyay, Atri (author), Iosifidis, G. (author), Ruffini, Marco (author)The development of Multi-access edge computing (MEC) has resulted from the requirement for supporting next generation mobile services, which need high capacity, high reliability and low latency. The key issue in such MEC architectures is to decide which edge nodes will be employed for serving the needs of the different end users. Here, we...journal article 2022
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Svenningsson, P.O. (author), Fioranelli, F. (author), Yarovoy, Alexander (author), Martone, Anthony F. (author)In this article, a statistical model of human motion as observed by a network of radar sensors is presented where knowledge on the position and heading of the target provides information on the observation conditions of each sensor node. Sequences of motions are estimated from measurements of instantaneous Doppler frequency, which captures...journal article 2022
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Raja, A.A. (author), Grammatico, S. (author)In this article, we consider a sequence of transferable utility coalitional games, where the actual coalitional values are unknown but vary within known bounds. As a solution to the resulting family of games, we formalize the notion of 'robust core.' Our main contribution is to design two distributed algorithms, namely 1) distributed payoff...journal article 2022
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Svenningsson, P.O. (author), Kruse, N.C. (author), Fioranelli, F. (author), Yarovoy, Alexander (author)Cognitive radar frameworks rely on the ability to quantify and reason on future uncertainty, which allows for the selection of an optimal decision policy. These methods require that the uncertainty estimates provided by the underlying statistical model are well-calibrated, i.e. consistent with true uncertainty. In this work, the utilization of...conference paper 2022
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Dreef, H. J. (author), Shi, S. (author), Cheng, X. (author), Donkers, M. C.F. (author), Van den Hof, P. M.J. (author)Identifiability of linear dynamic networks requires the presence of a sufficient number of external excitation signals. The problem of allocating a minimal number of external signals for guaranteeing generic network identifiability in the full measurement case has been recently addressed in the literature. Here we will extend that work by...journal article 2022
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Vande Putte, H.J.M. (author), Jylhä, T.E. (author)Purpose: Since corporate real estate management (CREM) emerged in the 1990s, it has been modelled in many ways. The Delft model views the corporate real estate management function as a coordinator of four distinct accommodation perspectives. Although the model has been used in education and practice for years, there is no consensus on its...journal article 2022
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van der Heijden, T.J.T. (author), Lugt, D. (author), van Nooijen, R.R.P. (author), Palensky, P. (author), Abraham, E. (author)Participation in demand response (DR) has been explored for many large energy-using assets based on day ahead electricity markets. In this manuscript, we propose the use of multiple electricity spot markets to enable price-based DR for open canal systems in the Netherlands, where many large pumping stations are used for flood mitigation and...journal article 2022
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Schöpe, M.I. (author)Recent advances in Multi-Function Radar (MFR) systems led to an increase in their degrees of freedom. As a result, modern MFR systems are capable of adjusting many parameters during runtime. An automatic adaptation of the radar system to changing situations, like weather conditions, interference, or target maneuvers, is often mentioned in the...doctoral thesis 2021
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Krul, K. (author)Why do land reforms rarely achieve their desired effects? This dissertation posits that a key to solve this question lies in a closer understanding of the specific workings of property rights. The idea is developed empirically in China’s forest sector, where one of the world’s largest land-reform undertakings in modern times was initiated under...doctoral thesis 2021
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Schöpe, M.I. (author), Driessen, J.N. (author), Yarovoy, Alexander (author)The radar resource management problem in a multitarget tracking scenario is considered. The problem is solved using a dynamic budget balancing algorithm. It models the different sensor tasks as partially observable Markov decision processes and solves them by applying a combination of Lagrangian relaxation and policy rollout. The algorithm has a...journal article 2021
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Fiddes, Sonya (author), Pepler, Acacia (author), Saunders, K.R. (author), Hope, Pandora (author)Climate scientists routinely rely on averaging over time or space to simplify complex information and to concisely communicate findings. Currently, no consistent definitions of 'warm' or 'cool' seasons for southern Australia exist, making comparisons across studies difficult. Similarly, numerous climate studies in Australia use either...journal article 2021
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van Grevenstein, W. M.U. (author), van der Linde, E. M. (author), Heetman, J. G. (author), Lange, J. F. (author), ten Cate, Th J. (author), Wauben, L.S.G.L. (author), Dekker-van Doorn, C. M. (author)Objective: Medical Crew Resource Management (CRM) training courses are designed to increase patient safety by reducing the effects of human errors. These training courses are most popular in surgery and a wide range of medical CRM training courses for surgical teams is now available. However, the effects of these CRM training courses on...journal article 2021
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van der Werk, Bas (author), Schöpe, M.I. (author), Driessen, J.N. (author)Radar Resource Management in a multi-sensor multi-target scenario is considered. A dynamic resource balancing algorithm is proposed which optimizes target task parameters assuming an underlying partially observable Markov decision process (POMDP). By applying stochastic optimization methods, such as policy rollout, the POMDP is solved non...conference paper 2021
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de Boer, Thies (author), Schöpe, M.I. (author), Driessen, J.N. (author)The radar resource management problem in a multi-target tracking scenario is considered. Partially observable Markov decision processes (POMDPs) are used to describe each tracking task. Model predictive control is applied to solve the POMDPs in a non-myopic way. As a result, the computational complexity compared to stochastic optimization...conference paper 2021
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Schöpe, M.I. (author), Driessen, J.N. (author), Yarovoy, Alexander (author)The radar resource management problem in a multitarget tracking scenario for multi-function radar is considered. To solve it, an optimal balancing of the sensor budget by applying Lagrangian relaxation and the subgradient method is proposed. In a time-invariant scenario it is shown that the proposed method will lead to balanced budgets based on...conference paper 2020
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Mianabadi, Ameneh (author), Derakhshan, Hashem (author), Davary, Kamran (author), Hasheminia, Seyed Majid (author), Hrachowitz, M. (author)Due to the effects of global climate change on duration, frequency and number of drought events, the occurrence of prolonged droughts, referred to as “megadroughts” (lasting for two decades or longer) will become more probable in the future. Thus, it is crucial for countries especially in arid and semi-arid regions of the world to develop...journal article 2020