3D Topology-Preserving Segmentation with Compound Multi-Slice Representation

Author(s):  
Jiaqi Yang ◽  
Xiaoling Hu ◽  
Chao Chen ◽  
Chialing Tsai
Keyword(s):  
Author(s):  
Sneha Singh ◽  
Manisha Bharti

Underwater wireless sensor networks (UWSNs) contains many components such as vehicles and sensors that are deployed for cooperative monitoring and data collection tasks in a particular acoustic environment various nodes and ground-based stations use these networks interactively. Presently, UWSNs face the problems and obstacles regarding limited bandwidth, high propagation delay, 3D topology, media access control, routing, resource utilization, and power constraints. The research community has developed different methodologies over the past few decades to address these issues and challenges; but, due to complex characteristics of the underwater environment, some of them are still open to research. The main drawback of the traditional approach is the lack of direct interaction between different ends, recorded information can never be accessed during any mission, and data recorded will be lost in the event of any failure.


Sensors ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 156 ◽  
Author(s):  
Wenbo Zhang ◽  
Jing Wang ◽  
Guangjie Han ◽  
Xinyue Zhang ◽  
Yongxin Feng

3D topology control in underwater sensor networks is of great significance to ensuring reliable and efficient operation of the network. In this paper, by analyzing the characteristics of an underwater sensor network, we take the cube as the basic unit to perform 3D partition of the monitoring area, define the 3D partition unit and basic cluster structure of the underwater sensor network, and arrange rotating temporary control nodes in the cluster. Then, a cluster sleep-wake scheduling algorithm is proposed that compares the remaining node energy. It selects the node with the largest remaining energy as the working node, and the remaining nodes complete the transition of dormancy and waiting states as long as they reach the preset dormancy time. The node state settings of this phase are completed by the temporary control node. Temporary control nodes selecting and sleep-wake scheduling are used in the algorithm through 3D topology control, which reduces energy consumption and guarantees maximum sensing coverage of the entire network and the connection rate of active nodes. Simulation results further verify the effectiveness of the proposed algorithm.


Author(s):  
Lars H. Frandsen ◽  
Yuriy Elesin ◽  
Ole Sigmund ◽  
Jakob S. Jensen ◽  
Kresten Yvind
Keyword(s):  

2020 ◽  
Vol 178 ◽  
pp. 115540
Author(s):  
Sicheng Sun ◽  
Piotr Liebersbach ◽  
Xiaoping Qian

2013 ◽  
Vol 303-306 ◽  
pp. 2671-2674 ◽  
Author(s):  
Wei Ye Tao ◽  
Lai You Wang ◽  
Guo Quan Huang ◽  
Hua Ying Zhou ◽  
Man Luo

Compared to other topological indices, molecular connectivity index has good structural selectivity and correlation.According to the molecule’s 2D and 3D topology file, we conducted research on the mol2 format file to consider how to convert the ASCII file into the adjacency matrix. Based on the adjacency matrix, we analyzed the relevant algorithm to calculate the molecules’ molecular connectivity index through adjacency matrix. As a molecular descriptor, the molecular connectivity index can be used in QSAR.


2008 ◽  
Vol 361 (14-15) ◽  
pp. 3957-3962 ◽  
Author(s):  
Dawid Pinkowicz ◽  
Robert Podgajny ◽  
Wojciech Nitek ◽  
Magdalena Makarewicz ◽  
Mariusz Czapla ◽  
...  
Keyword(s):  

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