Internet energy consumption is rapidly becoming an issue due to the exponential traffic growth and the rapid expansion of communication infrastructures worldwide. We address the problem of energy-aware intra-domain traffic engineering in networks operated with a shortest path routing protocol. We consider the problem of switching off (putting in sleep mode) network elements (links and routers) ...

Next generation communication networks are moving towards autonomous wireless infrastructures, as for example, Wireless Sensor Networks (WSNs) that are capable of working unattended under dynamically changing conditions. Over the last few years, WSNs are being developed towards a large number of multimedia streaming applications, e.g., video surveillance, traffic control systems, health monitor...

Internet energy consumption is rapidly becoming an issue due to the exponential traffic growth and the rapid expansion of communication infrastructures worldwide. We address the problem of energy-aware intra-domain traffic engineering in networks operated with a shortest path routing protocol. We consider the problem of switching off (putting in sleeping mode) network elements (links and router...

Real-time applications such as phone, videoconference, multimedia streaming, are typical applications which require relatively small delay and small delay fluctuation. To meet the QoS requirements of these applications, network infrastructures should have the ability to accommodate real-time traffic. Recently, IEEE802.11 wireless LANs, fundamentally based on CSMA/CA, have been widely used as pa...

1-1 Market status of laser diodes for optical communication The recent growth of the Internet, mobile telecommunication, video on demand services, and other information-communication facilities has led to the explosion of worldwide communication traffic, leading to demand for faster and denser communication infrastructures including optical communication networks. Distributed feedback laser dio...

Vehicular ad-hoc network (VANET) is an important component of intelligent transportation systems, in which vehicles are equipped with on-board computing and communication devices which enable vehicle-to-vehicle communication. Consequently, with regard to larger communication due to the greater number of vehicles, stability of connectivity would be a challenging problem. Clustering technique as ...

the purpose of this study is to assess farmers’ attitude toward the soil conservation practices in the kushk-abad catchment basins in the province of khorasan razavi. a sample of 200 farmers was randomly selected from 1200 farmers living in kardeh catchment basin. data collection was done through a questionnaire that was administered in 2014. validity of the questionnaire was confirmed by a pan...

Context-aware systems use sensors in order to analyse their environment and to adapt their behaviour. We have designed and developed Sens-ation, an open and generic service-oriented platform, which provides powerful, yet easy-to-use, tools to software developers who want to develop context-aware, sensor-based infrastructures. The service-oriented paradigm of Sens-ation enables standardised comm...