[1
]Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau
[2
]The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon,
Hong Kong
[3
]Norwegian University of Science and Technology, Norway
[4
]Sun Yat-sen University, Guangzhou, P. R. China
[5
]Lulea University of Technology, Lulea, Sweden