No abstract

The need for multimethods is preeminent in the domain of object-oriented programming. However, multimethods are far from universally acknowledged. Commonly used languages - C++, Java & C# - are single dispatching languages. In this paper, we demonstrate the alternatives for multimethods in such languages. The techniques discussed, in this paper, include double dispatching (a well known technique), technique of message dispatching using RTTI (explored in detail by us in this paper), and reflection (a feature provided by some compilers). We implement these techniques for C++, Java and C# languages and discuss issues associated with encapsulating multimethods in single dispatch languages. We also compare techniques in terms of their efficiency, ease of (re)use and type safety.

-Steganography is the technique of hiding secret message in a cover medium in such a way that only the sender and the intended recipient knows the existence of communication. DNA due to its immense storage capacity and high randomness is used now in the field of steganography. Though many algorithms have been developed for hiding the data, DNA sequences based data encryption seems to be a promising strategy for fulfilling the current information security needs. Audio steganography is concerned with hiding information in a cover (host) audio signal in an imperceptible way. In this paper, various techniques using DNA Sequences and audio files for data hiding is discussed for secure data transmission and reception.

No abstract

MANET is self organizing, decentralized and dynamic network. In which participating nodes can move anywhere. The nodes can be host or router anytime 1 . Mobile ad hoc network is decentralized network so if one node is participating as router for particular time but if that node leave network then it is very difficult to transfer data packets. The main feature of MANET network of self organizing capability of node has advantage and disadvantage as well. By this it is easy to maintain network and convert topology but at same time we need to tolerate data transfer. The MANET is also used for big network and internet but there is no smart objects like IoT which can share information machine to machine. Now rapidly increase internet users worldwide to access global information and technology 2 .IoT is basically used to converge applications and services to open global business opportunities which can use I-GVC (Information-driven Global Value Chain) for efficient productivity.