Wireless sensor networks (WSNs) have been applied to many applications since emerging.
Among them, one of the most important applications is Sensor Data Collections, where …

Fault tolerance is one of the most important wireless sensor networks requirements. It
ensures that the network continues to function correctly even when some components fail. In …

In wireless sensor networks (WSNs) nodes often operate unattended in a collaborative
manner to perform some tasks. In many applications, the network is deployed in harsh …

Existing work on placing additional relay nodes in wireless sensor networks to improve
network connectivity typically assumes homogeneous wireless sensor nodes with an …

Depth from Focus (DFF) and Depth from Defocus (DFD) methods are theoretically unified
with the geometric triangulation principle. Fundamentally, the depth sensitivities of DFF and …

We consider the problem of deploying or repairing a sensor network to guarantee a
specified level of multi-path connectivity (k-connectivity) between all nodes. Such a …

Wireless communication between sensors allows the formation of flexible sensor networks,
which can be deployed rapidly over wide or inaccessible areas. However, the need to …

One approach to prolong the lifetime of a wireless sensor network (WSN) is to deploy some
relay nodes to communicate with the sensor nodes, other relay nodes, and the base …

Wireless sensor network (WSN) applications, especially those serving in inhospitable
environments such as battlefield reconnaissance, are susceptible to large-scale damage …

In wireless sensor networks, relay node placement has been proposed to improve energy
efficiency. In this paper, we study two-tiered constrained relay node placement problems …