The proliferation of “Things” over a network creates the Internet Things (IoT), where sensors integrate to collect data from environment long periods time. growth IoT applications will inevitably involve co-locating multiple wireless sensor networks, each serving different with, possibly, needs and constraints. Since energy is scarce in nodes equipped with non-rechargeable batteries, harvesting...

in wireless sensor networks, optimal consumptionof energy and having maximum life time are important factors. in this article attempt has been made to send the data packets with particular reliability from the beginning based on aodv protocol. in this way two new fields add to the routing packets and during routing and discovering of new routes, the lowest remained energy of nodes and route tra...

Increasing mobility and the resulting rising traffic demands cause serious problems in urban regions world-wide. Approaches to alleviate the negative effects of traffic include an improved control of traffic lights and the introduction of dynamic route guidance systems that take current conditions into account. One solution for the former aspect is Organic Traffic Control (OTC) which provides a...

by extending wireless networks and because of their different nature, some attacks appear in these networks which did not exist in wired networks. security is a serious challenge for actual implementation in wireless networks. due to lack of the fixed infrastructure and also because of security holes in routing protocols in mobile ad hoc networks, these networks are not protected against attack...

Economic firms interact via suppliers/customers interactions. These interactions define a production network. We here study the dynamics of these networks under very simple assumptions and show that they exhibit noticeable patterns of wealth and production. The main dynamical properties of this time/space organisation are studied and shown to be shared by a wide class of models. keywords: netwo...

We describe a new phenomenon in quantum cosmology: self-organised localisation. When the fundamental parameters of theory are functions scalar field subject to large fluctuations during inflation, phase transitions can act as dynamical attractors. As result, probabilistically localised around critical value and Universe finds itself at edge transition. illustrate how localisation could account ...

Achieved wireless networks since its beginning the prevalent wide due to the increasing wireless devices represented by smart phones and laptop, and the proliferation of networks coincides with the high speed and ease of use of the Internet and enjoy the delivery of various data such as video clips and games. Here's the show the congestion problem arises and represent   aim of the research is t...

Wireless sensor networks (WSNs) are used for event detection and data collection in a plethora of environmental monitoring applications. However a critical factor limits the extension of WSNs into new application areas: energy constraints. This thesis develops self-organising energy efficient data collection and dissemination protocols in order to support WSNs in event detection and data collec...