Recently, the use of the database paradigm has emerged as a feasible solution to manage data in Wireless Sensor Network (WSN) environments. Various Sensor Network Query Processors (SNQPs) implements in-network declarative query processing that provide data reduction, aggregation, logging, and auditing facilities. These SNQPs view the WSN as a distributed database over which declarative query pr...

Wireless Sensor networks (WSN) is a system collection of huge number of low cost sensor nodes spread over the geographic area in order to sense the data. This network is used to collect data and transmit the messages to base station(sink). In earlier days, WSN has been received a tremendous concentration from academic, defence and industrial services etc. Yet, they have many different constrain...

Wireless sensor network (WSN) is an infrastructure less, low cost, dynamic topology, appplication oriented, multihoping network design with small, low power, sensing wireless distributed nods. WSN designing become more complex due to characterstics of deploying nodes, security, authentication and its operation scenario. This paper presents an analytical view on WSN architecture design issues, i...

-------------------------------------------------------------------ABSTRACT--------------------------------------------------------------Wireless sensor network (WSN) is a new and fast advancing technology, which is opening up many opportunities in the field of remote sensing and data monitoring. Even though the advances in embedded systems, the energy consumption is still open issue in WSNs. R...

Designing an efficient wireless sensor network (WSN) system is considered a challenging problem due to the limited energy supply per node. In this paper, performance of several bi-objective optimization algorithms in providing energy-efficient clustering solutions that can extend lifetime nodes were investigated. Specifically, we use Moth–Flame Optimization (MFO) algorithm and Salp Swarm Algori...

Wireless sensor networks (WSNs) have enabled numerous embedded wireless applications in different areas, such as military/battle field, environmental monitoring, and intelligent building systems. They consist of a large number of nodes that need to operate normally for months to years to complete designated tasks. Due to the small dimension of a sensor node, the power supply attached to the sen...

The shadow return on capital in 75 small municipal water systems is estimated using a gamma frontier variable cost function. The estimated Social Cost of capital exceeds the shadow return by an average ratio of 4.37:1, with a median capital stock inefficiency of $70, 500 per year per system owing to overinvestment in public water supply capital. In addition, actual production costs exceed minim...