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Wireless sensor network (WSN) refers to a group of spatially dispersed and dedicated sensors for monitoring and recording the physical conditions of the environment and organizing the collected data at a central location. Sensor Localization is a fundamental challenge in WSN. In this paper localization is modeled as a multi dimensional optimization problem.(More)
In this paper, we present a real time remote triggered laboratory which has multi-set, multi-group of wireless sensor network experimental setup which is envisioned to provide a practical experience of designing and implementing wireless sensor networks' algorithms in both indoor and outdoor conditions. The architecture provides a remote code editing(More)
—This paper presents a remote triggered wireless sensor network (WSN) testbed used to facilitate multiuser remote access to the WSN experiments for virtual learning of wireless sensor network concepts. This testbed provides multi-set, multi-group of WSN experimental setup that is capable to provide opportunity to perform remote code editing using over the(More)
The deployment of a wireless sensor network for real-time monitoring applications encounters numerous challenges. In a typical outdoor scenario the propagation of the radio signal can be affected by several factors like the rainfall, foliage, path loss effect and fading effect. These factors can confront dynamic changes in link quality which will affect the(More)
Wireless Sensor Networks (WSNs) consist of distributed autonomous devices which sense the environmental or physical conditions cooperatively and pass the information through the network to a base station. Sensor Localization is a fundamental challenge in WSN. Location information of the node is critically important to detect an event or to route the packet(More)
PURPOSE To report the outcome of surgically managed primary angle-closure glaucoma (PACG) cases in 84 eyes at a tertiary eye hospital in South India. MATERIALS AND METHODS Retrospective analysis of medical records of 84 eyes of 81 patients with PACG, who were surgically managed over 4 years at tertiary eye hospital in South India. Data were obtained from(More)
A Wireless Sensor Network (WSN) is a group of a huge number of wireless sensor nodes which are arranged in a targeted region. The networks work properly till it is having sufficient battery power. So to optimize battery power, energy efficient routing protocols should be used. The current work involves comparing of routing protocols such as GSTEB, HEED and(More)
The nodes in wireless sensor networks (WSN) need to be deployed optimally to cover whole geographic area and the communication link between them should be optimal. During deployment the proper strategy is required to optimally deploy the sensor nodes in the area. The sensor nodes can be compared with swarms which are homogenous agents. Swarm intelligence(More)
Over the past decade, experimentation for wireless sensor network (WSN) has been widely used to enrich the learning experience of educators and learners. Our remote triggered WSN laboratory is a multi-set, multi-group, WSN experimental setup that provides an intuitive web-based interface to carry out remote experimentation as well as code editing by(More)
Wireless sensor networks are immensely used for environmental monitoring, landslide detection, disaster management etc. These networks are mostly deployed in outdoor scenarios. In a typical outdoor scenario the propagation of the radio signal can be affected by several factors like the rainfall, foliage, path loss effect and fading effect. The outdoor(More)