scholarly journals Spatial and temporal evolution characteristics of the water conservation function and its driving factors in regional lake wetlands—Two types of homogeneous lakes as examples

2021 ◽  
Vol 130 ◽  
pp. 108069
Author(s):  
Wenmin Hu ◽  
Guo Li ◽  
Zenian Li
Keyword(s):  
Water Conservation ◽  
Temporal Evolution ◽  
Driving Factors ◽  
Evolution Characteristics ◽  
Lake Wetlands

scholarly journals Connected model for opportunistic sensor network based on Katz centrality

2017 ◽  
Vol 14 (3) ◽  
pp. 735-750
Author(s):  
Jian Shu ◽  
Lei Xu ◽  
Shandong Jiang ◽  
Lingchong Meng
Keyword(s):  
Network Performance ◽  
Temporal Evolution ◽  
Network Connectivity ◽  
Important Indicator ◽  
Time Graph ◽  
Evolution Characteristics ◽  
Connectivity Model ◽  
Katz Centrality ◽  
Connectivity Degree ◽  
Computing Method

Connectivity is an important indicator of network performance. But the opportunistic sensor networks (OSNs) have temporal evolution characteristics, which are hard to modelled with traditional graphs. After analyzing the characteristics of OSNs, this paper constructs OSNs connectivity model based on time graph theory. The overall connectivity degree of the network is defined, and is used to estimate actual network connectivity. We also propose a computing method that uses the adjacency matrix of each snapshot. The simulation results show that network connectivity degree can reflect the overall connectivity of OSNs, which provide a basis for improving the OSNs performance.

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