Wireless sensor networks (WSNs) include sensor nodes in which each node is able to monitor the physical area and send collected information to the base station for further analysis. The important key of WSNs is detection and coverage of target area which is provided by random deployment. This paper reviews and addresses various area detection and coverage problems in sensor network. This paper ...

INTRODUCTION The drive toward universal health coverage (UHC) is central to the post 2015 agenda, and is incorporated as a target in the new Sustainable Development Goals. However, it is recognised that an equity dimension needs to be included when progress to this goal is monitored. WHO have developed a monitoring framework which proposes a target of 80% coverage for all populations regardless...

Point coverage in wireless sensor networks is the problem of detecting some stationary or moving target points in the area of the network using as little sensor nodes as possible. This can be accomplished using different deployment strategies, rearrangement of nodes using a moving strategy, or designing a suitable schedule for making nodes on and off in such a way that in each time slice, only ...

BACKGROUND The large treatment gap for people suffering from mental disorders has led to initiatives to scale up mental health services. In order to track progress, estimates of programme coverage, and changes in coverage over time, are needed. METHODS Systematic review of mental health programme evaluations that assess coverage, measured either as the proportion of the target population in c...

A clinical target volume (CTV) to planning target volume (PTV) margin recipes was routinely used to ensure dose was actually delivered to target for all (most) patients. Currently used margin recipes were associated with only translational set-up errors in radiotherapy. However, when set-up errors extended to six-degree (6D) scope (three translational and three rotational set-up errors), margin...

This study quantified the interplay and gradient effects on GTV dose coverage for 3D CRT, dMLC IMRT, and VMAT SABR treatments for target amplitudes of 5-30 mm using 3DVH v3.1 software incorporating 4D Respiratory MotionSim (4D RMS) module. For clinically relevant motion periods (5 s), the interplay effect was small, with deviations in the minimum dose covering the target volume (D99%) of less t...

Providing field coverage is a key task in many sensor network applications. In certain scenarios, the sensor field may have coverage holes due to random initial deployment of sensors; thus, the desired level of coverage cannot be achieved. A hybrid wireless sensor network is a cost-effective solution to this problem, which is achieved by repositioning a portion of the mobile sensors in the netw...

To obtain more accurate and comprehensive information from target monitoring area in mobile wireless sensor networks (mWSN), multiple area coverage is often considered. However, it may cause coverage holes and inefficiencies in a mWSN due to sensor nodes' moving, energy loss, physical damage, errors, failures or other factors. To address this problem, a k-coverage algorithm for mobile wireless ...