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Li, C. (author), Wang, H. (author), Van Mieghem, P. (author)
The largest eigenvalue ? 1 of the adjacency matrix powerfully characterizes dynamic processes on networks, such as virus spread and synchronization. The minimization of the spectral radius by removing a set of links (or nodes) has been shown to be an NP-complete problem. So far, the best heuristic strategy is to remove links/nodes based on the...
conference paper
document
Li, F. (author), Wang, L.L. (author), Yuan, S.J. (author), Wang, X.S. (author)
In the present research, the relationship between the strain increment and Lode parameter was obtained by using Lode parameter and Levy-Mises equation. The quantitative relation between different strain increments was presented and the relationship between plastic deformation types and Lode parameter was demonstrated. The relations between...
journal article 2009
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Wu, Y. (author), Li, X.W. (author), Song, G.M. (author), Wang, Y.M. (author), Narita, T. (author)
Oxidation behavior of the uncoated base, Ni–Al coated and Re–Cr-Ni plus Ni–Al coated single-crystal (SC) Ni-based TMS-82+ superalloy is studied under cyclic air at 900ºC for 200 h to assess the oxidation resistance. Regardless of the coating processing, Ni–Al coating is effective in improving the oxidation resistance due to the formation of a...
journal article 2010
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Van Mieghem, P.F.A. (author), Stevanovic, D (author), Kuipers, F.A. (author), Li, C. (author), van de Bovenkamp, R. (author), Liu, D. (author), Wang, H. (author)
journal article 2011
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Wu, Y. (author), Wang, Y.M. (author), Song, G.M. (author), Li, X.W. (author)
Oxidation behavior of a Re-based diffusion barrier/Ni–Al coated single-crystal (SC) Ni-based TMS-82+ superalloy was studied to compare with those of the base and Ni–Al coated superalloys under cyclic air at 1150 °C for 200 h. The base superalloy showed a negative mass gain due to extensive oxide spallation, and the Ni–Al coated superalloy...
journal article 2011
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Van Mieghem, P. (author), Stevanovi?, D. (author), Kuipers, F. (author), Li, C. (author), Van de Bovenkamp, R. (author), Liu, D. (author), Wang, H. (author)
The decrease of the spectral radius, an important characterizer of network dynamics, by removing links is investigated. The minimization of the spectral radius by removing m links is shown to be an NP-complete problem, which suggests considering heuristic strategies. Several greedy strategies are compared, and several bounds on the decrease of...
journal article 2011
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Li, C. (author), Wang, H. (author), De Haan, W. (author), Stam, C.J. (author), Van Mieghem, P.F.A. (author)
An increasing number of network metrics have been applied in network analysis. If metric relations were known better, we could more effectively characterize networks by a small set of metrics to discover the association between network properties/metrics and network functioning. In this paper, we investigate the linear correlation coefficients...
journal article 2011
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Li, C. (author), Chen, J.H. (author), Wu, X. (author), Wang, W. (author), Van der Zwaag, S. (author)
journal article 2012
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Li, W. (author), Wang, Z.B. (author), Van Maren, D.S. (author), De Vriend, H.J. (author), Wu, B.S. (author)
conference paper 2013
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Chen, Z. (author), Xu, Z. (author), Wang, G. (author), Li, H. (author), Chen, B. (author), Zeng, X.C. (author), Tan, L. (author)
Crystalline solids are solid materials whose constituent atoms, molecules, or ions are arranged in a highly regulated fashion. Due to lack of rotational freedom in their stacking, they have been known as fragile materials. Even though some efforts have been dedicated to bind or mend defects/cracks in amorphous materials like concrete or polymers...
conference paper 2013
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Li, W. (author), De Vriend, H.J. (author), Wang, Z. (author), Van Maren, D.S. (author)
High-resolution morphological modeling of fluvial processes with complex, rapidly varying flows has been limited so far by model accuracy or computational efficiency. One of the most widely used numerical algorithms is based on the total variation diminishing method, solved by either upwind or centered approaches. An upwind scheme preserves high...
journal article 2013
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Wang, H. (author), Li, Q. (author), D'Agostino, G. (author), Havlin, S. (author), Stanley, H.E. (author), Van Mieghem, P. (author)
Most real-world networks are not isolated. In order to function fully, they are interconnected with other networks, and this interconnection influences their dynamic processes. For example, when the spread of a disease involves two species, the dynamics of the spread within each species (the contact network) differs from that of the spread...
journal article 2013
document
Li, C. (author), Wang, H. (author), Van Mieghem, P.F.A. (author)
Epidemics have so far been mostly studied in undirected networks. However, many real-world networks, such as the online social network Twitter and the world wide web, on which information, emotion, or malware spreads, are directed networks, composed of both unidirectional links and bidirectional links. We define the directionality ? as the...
journal article 2013
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Li, Hai-Tao (author), Wang, Qi-bin (author), Zong, Zhi (author), Sun, Lei (author), Liang, Hui (author)
journal article 2014
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Wang, Y. (author), Li, Q. (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author), Kotsonis, M. (author)
Swirl recovery vanes (SRVs) are a set of stationary vanes located downstream from a propeller, which may recover some of the residual swirl from the propeller, hoping for an improvement in both thrust and efficiency. The SRV concept design for a scaled version representing the Fokker 29 propeller is performed in this paper, which may give rise...
journal article 2014
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Li, W. (author), Wang, Z.B. (author), Van Maren, D.S. (author), De Vriend, H.J. (author), Wu, B.S. (author)
River floods are usually featured by a downstream flattening discharge peak whereas a downstream increasing discharge peak is observed at a rate exceeding the tributary discharge during highly silt-laden floods (hyperconcentrated floods) in China’s Yellow River. It entails a great challenge in the downstream flood defence and the underlying...
journal article 2014
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Wang, Y. (author), Chen, W. (author), Wang, H. (author), Li, R. (author)
In this paper, a steady 3D numerical study has been conducted on a 90 mm counter rotating lift fan to investigate its aerodynamic performance. The effect of axial distance between the fans and rotor speed are studied. A low thrust generation has been revealed from the simulation results due to the unfavourable working condition for the upstream...
conference paper 2014
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Li, K. (author), Huang, R. (author), Phang, S.K. (author), Lai, S. (author), Wang, F. (author), Tan, P. (author), Chen, B.M. (author), Lee, T.H. (author)
In this paper, we propose an approach to autonomously control a quadrotor micro aerial vehicle (MAV). With take-off weight of 50 g and 8-min flight endurance, the MAV platform codenamed ‘KayLion’ developed by the National University of Singapore (NUS) is able to perform autonomous flight with pre-planned path tracking. The vision-based...
conference paper 2014
document
Qu, B. (author), Li, Q. (author), Havlin, S. (author), Stanley, E. (author), Wang, H. (author)
Dynamic social opinion models have been widely studied on undirected networks, and most of them are based on spin interaction models that produce a consensus. In reality, however, many networks such as Twitter and the World Wide Web are directed and are composed of both unidirectional and bidirectional links. Moreover, from choosing a coffee...
journal article 2014
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Li, C. (author), Li, Q. (author), Van Mieghem, P.F.A. (author), Stanley, H.E. (author), Wang, H. (author)
In recent decades, a number of centrality metrics describing network properties of nodes have been proposed to rank the importance of nodes. In order to understand the correlations between centrality metrics and to approximate a high-complexity centrality metric by a strongly correlated low-complexity metric, we first study the correlation...
journal article 2015
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