Now showing items 1-6 of 6

    • Breach-Free Sleep-Wakeup Scheduling for Barrier Coverage with Heterogeneous Wireless Sensors 

      Zhang, Z.; Wu, Weili; Yuan, Jing; Du, Dingzhu
      Barrier Coverage plays a vital role in wireless sensor networks. Research on barrier coverage has mainly focused on the lifetime maximization and the critical conditions to achieve k-Barrier Coverage under various sensing ...
    • Maximisation of the Number of β-View Covered Targets in Visual Sensor Networks 

      Guo, L.; Li, D.; Wang, Y.; Zhang, Z.; Tong, Guangmo; Wu, Weili; Du, Dingzhu (Inderscience Enterprises Ltd., 2019-03-24)
      In some applications using visual sensor networks (VSNs), the facing directions of targets are bounded. Therefore existing full-view coverage (all the facing directions of a target constitutes a disk) is not necessary. We ...
    • Maximisation of the Number of β-View Covered Targets in Visual Sensor Networks 

      Guo, Ling; Li, Deying; Wang, Yongcai; Zhang, Zhao; Tong, Guangmo; Wu, Weili; Du, Dingzhu (Inderscience Enterprises Ltd, 2019-04-01)
      In some applications using visual sensor networks (VSNs), the facing directions of targets are bounded. Therefore existing full-view coverage (all the facing directions of a target constitutes a disk) is not necessary. We ...
    • Quality of Barrier Cover with Wireless Sensors 

      Wu, Weili; Zhang, Zhao; Gao, Chuangen; Du, Hai; Wang, Hua; Du, Dingzhu (Inderscience Enterprises Ltd, 2019-04-01)
      A set of wireless sensors is called a barrier cover if they can monitor the boundary of an area so that an intruder cannot enter the area without being found by any sensor. The quality of a barrier cover is the shortest ...
    • Set Function Optimization 

      Wu, Weili; Zhang, Z.; Du, Dingzhu (Operations Research Society of China, 2018-12-17)
      This article is an introduction to recent development of optimization theory on set functions, the nonsubmodular optimization, which contains two interesting results, DS (difference of submodular) functions decomposition ...
    • A Zig-Zag Approach for Competitive Group Testing 

      Cheng, Yongxi; Du, Dingzhu; Xu, Yinfeng
      In many fault-detection problems, we want to identify defective items from a set of n items using the minimum number of tests. Group testing is a scenario in which each test is on a subset of items and determines whether ...