Power efficient multicast routing is one of the key issues in the field of mobile ad hoc networks. Multicasting is a term which refers to delivering data packets to a group of mobile nodes from an intended source. Quality of Service enlarges the support level of predictable performance for network systems. This research work focuses on design and development strategy of QoS aware power efficien...

We present a network architecture, DTNLite, for reliable message delivery in sensor networks facing problems of high mobility, frequent disconnections and unreliable nodes . It is based on the DTN( Delay Tolerant Networking) architecture and its main features are asynchronous message delivery combined with custody transfer on an overlay network on sensor motes. We present an implementation of t...

This paper considers the acknowledgment procedure used to assure the delivery of packets on the radio interface of General Packet Radio Service (GPRS), where GPRS system is a new GSM service. It is currently being standardized for GSM Phase 2+ and provides packet switched data services over GSM network resources. This paper gives a rapid description of the GPRS radio interface, and its sublayer...

In Mobile Ad hoc Network, path between source and destination node changes too frequently due to unpredictable behavior and movement of mobile nodes. The data delivery to the intended destination becomes very challenging. The paths exist between source and destination node may be various types. Data delivery may be done with single or multiple paths. Single path sometimes not guaranteed about d...

The effects of two alternative sources of food delivery on the key-peck responding of pigeons were examined. Pecking was maintained by a variable-interval 3-min schedule. In the presence of this schedule in different conditions, either a variable-time 3-min schedule delivering food independently of responding or an equivalent schedule that required a minimum 2-s pause between a key peck and foo...

Delay-tolerant networks have the great potential to connecting devices and regions of the world that are being presently under-served by current networks. A challenge for Delay Tolerant Networks is to determine the routes through the network without having an end to end connection at any given instant of time. In DTN the routing of packets is done using store-carry-forward mechanism. In this pa...

Chemistry as an unconventional computing medium presently lacks a systematic approach to gather, store, and sort data over time. To build more complicated systems in chemistries, the ability to look at data in the past would be a valuable tool to perform complex calculations. In this paper we present the first implementation of a chemical delay line providing information storage in a chemistry ...