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Matušovič, Marko (author)Optimizing SQL query execution through effective cost models is a critical challenge in database management systems (DBMS). This thesis introduces a modular benchmarking system for cost models, with a pluggable architecture for both cost models and execution engines, enabling comprehensive benchmarking across various scenarios. Accompanied by a...master thesis 2024
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Yang, Yue (author)The rise of urban digital twins emphasises the critical role of representing real-world environments for decision-making and collaboration among stakeholders. This leads to an expectation of effective management and visualisation of large-scale urban data models. 3D Tiles is an open specification designed for streaming and rendering massive...master thesis 2024
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Cai, Cynthia (author)Point cloud data are gaining more importance in the Geomatics domain, with the development of modern sensing technologies like LiDAR and photogrammetry. The size of massive point clouds are growing, and the performance of traditional database solutions for its data management become insufficient. It remains a huge challenge for researchers to...master thesis 2024
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Yildiz, Hüsna (author), de Vries, Marten (author), Öztürkoglu, Emirhan (author)This thesis describes the design of a low-cost class-S power quality analyzer based on a Raspberry Pi 4. Capable of detecting power frequency, magnitude, voltage dips and swells, harmonics, and total harmonic distortion, the project consists of four main components: the communication protocol, the interface, the algorithms for power quality...bachelor thesis 2024
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de Haan, Laura (author)The frequent occurrence of catastrophic tailings dam failures underscores the urgent need to improve safety practices and minimise associated risks. This study introduces an advanced tool to evaluate the total Probability of Failure (PoF) of existing tailings dams systematically and effectively, supporting the rational prioritisation of...master thesis 2023
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de Graaf, Daan (author)Graph databases are systems to efficiently store and query large graphs. As graph databases grow in popularity, they are used to answer increasingly diverse and complex queries. However, graph databases typically have a very limited query language that cannot express arbitrary algorithms. As a result, many users treat the database as a storage...master thesis 2023
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Schutte, Marcus (author)Today's need for highly available systems leads to data partitioning and replication across multiple nodes. Providing strong transactional consistency in a distributed database requires extensive communication. For this, algorithms such as two phase commit are used. These communication algorithms add extra network latency's. For application...master thesis 2023
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Gavalas, Nikos (author)The adoption of the serverless architecture and the Function-as-a-Service model has significantly increased in recent years, with more enterprises migrating their software and hardware to the cloud. However, most applications require state management, leading to the use of external databases. To alleviate the burden of state management, there...master thesis 2023
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Qiu, Jingxuan (author)Distributed databases often struggle to fulfill their transactional isolation guarantees due to sharding and replication. As a result, the problem of checking isolation levels is consistently receiving attention from academia and industries. Transactional dependency graphs form a useful abstraction to analyze the transactions’ dependencies and...master thesis 2023
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Mbwanda, Tendai (author)Diversity in the use cases of semantic 3D city models today is unprecedented. A key enabler for this is the CityGML standard developed by the OGC to facilitate storing and exchanging these city models. Nevertheless, CityGML only provides object definitions which cater for a wide range of applications, making necessary the need to attach...master thesis 2023
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Hristov, Tsvetomir (author)Although digital watermarking has been a well-researched topic for the past decades and has seen numerous implementations for relational databases, it still lacks research for non-relational schema-less databases. In this paper, we explore proposed techniques for non-relational database watermarking and introduce an improved technique for NoSQL...bachelor thesis 2023
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Cai, Cynthia (author), Meines, Siebren (author), Poon, Chris (author), Powałka, Leon (author), Xia, Yitong (author), YAN, LAN (author)A 3D city model uses three-dimensional geometries to represent and model urban environments, in which the building model is the key feature. With the development of computer and data collection technologies, 3D city models are gaining growing capacities regarding storing rich information. This makes 3D city models more potentially useful than...student report 2022
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Sadowy-Sadowski, Tomasz (author)The concept of a spaceplane, a launch system that is a combination of an airplane and a rocket, is one of the most promising concepts of sustainable access to space. Along its trajectory, it experiences most extreme conditions with frequently opposing design requirements, making it one of the most complicated challenges in aerospace engineering....master thesis 2022
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Rodriguez, Mario (author)Using renewable energy to power a Mars habitat is a technological challenge because resources such as solar and wind are significantly weaker than on Earth. This work investigates the feasibility of using airborne wind energy (AWE) systems in combination with solar photovoltaic (PV) modules to power a Mars habitat. The Luchsinger model and the...master thesis 2022
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PANTELIOS, KONSTANTINOS (author)Today, in the urban planning, energy modelling and other fields, semantic 3D city models are used in various applications like visualization, data exploration, analysis and more. As a result, standard data practices needed to be set in order to facilitate the storage and exchange of these city models. For this purpose, the Open Geospatial...master thesis 2022
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Zijlstra, Kije (author)The goal of this research is to improve the fitness for use of the CMDB in the development phase of large infrastructure projects by identifying the information needs of the individuals. The construction industry is transiting from paper-based systems engineering to Model-Based Systems Engineering, especially in the development phase of large...master thesis 2022
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Ballega Fernandez, Hector (author)During the last decade, the proliferation of smartphones, social media and streaming services has provoked an explosion of multimedia data. This large amount of image and video sources combined with more powerful and inexpensive computational capabilities brought by the cloud computing paradigm has facilitated the rapid growth of new machine...master thesis 2021
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Li, Xiaoai (author)With the increasing demand for 3D city models in various applications, providing efficient access to 3D city models on the web has become very important and valuable. However, there is a lack of web services in which users can directly and effectively access the city objects contained in the 3D city models on the web. Another problem with web...master thesis 2021
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Stevers, Vera (author)In the Netherlands, the coastal dunes are essential to protect the country against flooding. However, the rising sea levels increase the risk of flooding along these sandy shores. Moreover, due to a combination of human and natural activities, dune erosion has increased and will continue to do so in the coming decades. Besides flood protection,...master thesis 2021
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Holla, Abhishek (author)In the Dutch government attempting to become fully circular 2050, VMRG, a Dutch Metal Façade Association, has initiated several pilot projects. Two of the most prominent ones are Cirlinq, an asset management platform for documenting building facades, and FaSA (Façade Service Applicate), a collective of stakeholders aiming to use drones and image...master thesis 2021