Abstract: This paper presents a comparative test of two protocols namely-AODV and DSR in various mobility scenarios of Vehicular Ad-hoc NETworks (VANETs). In order to make comparison three performance criterions are selected which include number of packet drop, throughput and total time taken by Ns2 to simulate the given network. To carry out the simulation process an open source simulator tool is used for this study namelyNS2. Based on the simulation results of both aforementioned protocols, the performance comparison is made and appropriate protocol is selected for individual scenario. The mobility scenarios selected on the basis of routing metrics.

• Publication Date: 09-Mar-2014
• DOI: 10.15224/978-1-63248-000-2-41
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Abstract: Since its introduction in 2009, Bitcoin, an open source, peer to peer, digital crypto currency has been growing in popularity and wide spread use. Growing attention, recognition by major financial institutions and high valued currency units (BTC) ascertains Bitcoin to a sturdy and ever increasing choice of currency. A public transaction log called the “Blockchain” keeps records of all committed transactions and Bitcoin ownership details, that is, addresses derived by cryptographic keys. Bitcoin mining, a process which results in the generation of new Bitcoins, is performed by miner operators for reception of incentives in the form of Bitcoins. This mining process is essentially operations of SHA-256 hashing of values in search of a hash digest smaller than a specific value. Once this winning hash has been discovered, a new block to Blockchain is added and BTC incentives are furnished by the Bitcoin network to the miner. This paper discusses methods of performing Bitcoin mining on non-c

• Publication Date: 09-Mar-2014
• DOI: 10.15224/978-1-63248-000-2-42
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• Downloads: 0