In multi-hop wireless sensor networks that are characterized by many-to-one (convergecast) traffic patterns, problems related to energy imbalance among sensors often appear. When the transmission range is fixed for nodes throughout the network, the amount of traffic that sensors are required to forward increases dramatically as the distance to the data sink becomes smaller. Thus, sensors closes...

Moving the sink node is an effective solution for improving the lifetime of wireless sensor networks (WSN). Different methods in the literature schedule sink movements and determine sink stay points. This paper provides another insight to the sink mobility problem in WSNs by incorporating node-load parameters into a matrix and using this matrix to determine which sink site to visit in each roun...

Gibberellins (GAs) are plant growth regulators that are known to stimulate physiological responses in plants and alter the source–sink metabolism through their effect on photosynthesis and sink formation. GAs promote fructose-1,6-biphosphatase and sucrose phosphate synthase and stimulate phloem loading. Photosynthate translocation from source to the developing sink is a major contributing facto...

We propose a learning-based approach to efficiently forward data to a mobile sink in a wireless sensor network. Specifically we assume a push application where the mobile sink does not initiate the query. Furthermore, the sink moves in a randomized pattern within the sensor field. In the presented scheme, Moles (nodes that sense the sink) learn the sink’s movement pattern over time and statisti...

junction uncoupling with carbenoxolone (25 mol/L) increased focal activity (2.18 1.43 versus 1.33 1.46 PVCs per injection, P<0.05), which further supports source-sink balance as a critical mediator of Ca -induced PVCs. Conclusions: These data provide the first experimental demonstration that localized -adrenergic receptor stimulation produces spatiotemporal synchronization of sarcoplasmic retic...

This paper demonstrates the advantages of using controlled mobility in wireless sensor networks (WSNs) for increasing their lifetime, i.e., the period of time the network is able to provide its intended functionalities. More specifically, for WSNs that comprise a large number of statically placed sensor nodes transmitting data to a collection point (the sink), we show that by controlling the si...

Routing protocols play crucial role in determining performance parameters such as packet delivery fraction, end to end (end 2 end) delay, packet loss etc. of any ad hoc communication network. In this paper the performance of DSDV protocol in sensor network of randomly distributed static nodes with mobile source and sink nodes is investigated for source and sink velocities 0,10,20,40 and 60 m/se...

Effect of high temperature tolerance in relation to carbon partitioning and grain sink activity was studied in ten genotypes of wheat (viz C 306, PBW 343, PBW 502, PBW 509, PBW 521, PBW 522, PBW 550, Inqalab, WL 711 and Sonalika) under normal (November, 25.6 ̊C during grain filling) and late planting conditions (December, 29.4 ̊C).

Use of mobile devices for data collection in wireless sensor networks (WSNs) has recently drawn much attention. Controlled sink mobility has been shown to be beneficial in energy conservation and lifetime prolongation. In this paper, we aim at studying the multi-hop uneven hierarchical routing protocol (MUHRP) using different mobile sink strategies. We first analyze the performance of multi-hop...