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Li, Z. (author)
Current Li-ion batteries dominate the market but face great challenges with respect to safety, cost and the higher energy and power densit requirements of electrical vehicles and stationary energy storage. Relevant for mobile electrical transport, Li-O2 batteries in theory offer the highest specific energy among all the lithium electrochemical...
doctoral thesis 2019
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Li, Q. (author)
In a propeller propulsion system, due to the torque working on the propeller, a rotational motion of the fluid is generated. This rotational motion, expressed as a swirl component in the slipstream, does not result in any useful propulsive power, but causes a decrease in propeller efficiency. By recovering the momentum in the crosswise direction...
doctoral thesis 2019
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Li, Y. (author)
Safety management systems (SMSs) have gained importance since the 1970s and changed focus from individual management activities to more systematic frameworks. The methods, techniques and tools used in them also became more and more sophisticated. However, from the perspectives of the researcher, company, auditor, government and (safety...
doctoral thesis 2019
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Li, J. (author)
With the growth of global population, the big cities become increasingly crowded. It is not rare to see large crowds in public transportations and events with masses of visitors, such as music festivals and football matches. The question “How to deal with crowds” is receiving attention, both from academia and practical crowd management.<br/>This...
doctoral thesis 2019
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Li, W. (author)
Crystallization-based chiral resolution techniques was born when Pasteur discovered the chirality of tartaric acid and manually separated its two enantiopure crystals by his tweezers. Ever since then, these techniques have been in constant development, mainly due to the needs from the pharmaceutical and food industries. In the past decades,...
doctoral thesis 2018
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Li, X. (author)
Since 1978, urban redevelopment in China has resulted in large-scale neighbourhood demolition and forced residential relocation, which can severely disrupt established people-place interactions in the demolished neighbourhoods. Urban redevelopment in China has also been criticized by the public and scholars, because the position of the residents...
doctoral thesis 2018
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Li, Q. (author)
With the springing up of freeform architectures, the key problem to structural engineers is to generate structural forms with high structural efficiency subject to the architectural space constraints during the conceptual design process. In this research, a theoretical framework for Structural Morphology has been proposed, that provides an...
doctoral thesis 2018
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Li, K. (author)
To assess durability of cement-based materials, permeability is commonly considered as an important indicator. It is defined as the rate of movement of an agent (liquid or gas) through the porous medium under an applied pressure. Although permeability can be directly measured in laboratories, these experimental tests generally require...
doctoral thesis 2017
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Li, Y. (author)
Highway embankments, river dykes and sea dykes usually have a uniform cross-section and extend for a long distance in the third dimension. These long soil structures are generally characterised by spatially varying soil properties, i.e. soil heterogeneity. Slope stability failures of these structures may have significant economic and societal...
doctoral thesis 2017
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Li, S. (author)
Seaports are crucial nodes in international trade and transport. Some of the cargoes arriving at seaports are transshipped to other ports, while others are transported to inland destinations. Every time an inland container vessel enters the port, it calls at many different terminals spread over the port area. Two coordination problems exist in...
doctoral thesis 2016
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Li, C. (author)
doctoral thesis 2016
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Li, Y. (author)
As a significant phenomenon in meteorology, fog has attracted more and more concern from the scientific community, because of its impacts on visibility in air- and road-transportation. E.g., at airports, the frequency of aircrafts taking off and landing has to be reduced during heavy fogs, because in conditions of low visibility the pilots need...
doctoral thesis 2016
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Li, X. (author)
The geo-graphical location at which an image or video was taken is a key piece of multimedia information. Such geo-information has become an indispensable component of systems enabling personalized and context-aware multimedia services. The research reported in this thesis investigates how to automatically derive geo-information from multimedia...
doctoral thesis 2016
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Li, Y. (author)
doctoral thesis 2016
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Li, L. (author)
doctoral thesis 2016
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Li, W. (author)
This thesis carried out two major investigations on how the geographical information generated by users in social media can be used to model and predict human behaviours. The first investigation regards the mobility patterns of social media users, which utilizes the relations between geographical information and other sources of information, e.g...
doctoral thesis 2016
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Li, J. (author)
Orthotropic steel decks are widely utilized in long span bridges, movable bridges and shorter span road and rail bridges due to their favourable properties. These properties are low deadweight, large plastic reserves in case of overload and aesthetic advantages. Nowadays, more than 1000 orthotropic steel deck bridges (OSDBs) have been built in...
doctoral thesis 2015
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Li, Y. (author)
This thesis describes the theory, design and implementation of levelcrossing ADCs and their system integration. The goal of this work is to explore methods at both the circuit level and the system level to improve the energy efficiency of LC-ADCs and integrate LC-ADCs in biomedical readout systems. Two single-bit capacitive LC-ADCs and an ECG...
doctoral thesis 2015
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Li, X. (author)
In this dissertation, we focus on exploiting superconvergence for discontinuous Galerkin methods and constructing a superconvergence extraction technique, in particular, Smoothness-Increasing Accuracy-Conserving (SIAC) filtering. The SIAC filtering technique is based on the superconvergence property of discontinuous Galerkin methods and aims to...
doctoral thesis 2015
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Li, Z. (author)
Crohn’s disease (CD) is a chronic inflammatory bowel disease (IBD) that affects millions of people in Europe alone. It is important to accurately assess the disease severity in a safe and non-invasive manner in order to improve the treatment of patients with CD. Furthermore, the ideal assessment must be objective, reproducible, quantitative and...
doctoral thesis 2015
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