In the well-known “prisoners' problem”, a representative example of steganography, two persons attempt to communicate covertly without alerting the warden. One approach to achieve this task is to embed the message in an innocent-looking cover-media. In our model, the message contents are scattered in the cover in a certain way that is based on a secret key known only to the sender and receiver....

The prisoners' problem is a typical model of steganography, in which two persons attempt to communicate covertly without alerting the warden. That is, only the receiver knows the existence of message sent by the sender. One available way to achieve this task is to embed the message in an innocuous-looking cover-media. On the other hand, for avoiding the covert communication taking place, the wa...

The delivery of user-tailored warning messages for heterogeneous user groups is a challenge rarely covered by hazard monitoring and early warning systems. While attention is mostly focused on sensor measurements and disaster prediction, warning message dissemination is often based on technical terminology and is not appropriate for the majority of interested user groups. This article describes ...

Security has become an important topic for communication systems. It is a big challenge to provide secure communication in this unique network environment. We propose a novel approach to encrypt a message using musical notes and these musical notes have to be sent by the sender to the receiver. The receiver after receiving the musical notes decrypts it and gets back the original message.

Alerting the population during crisis using available communication systems can significantly reduce the impact of emergency situations. However, the understanding of the alert and trust by recipients is influenced by the alert message content and style. It is therefore desirable that alert messages are formulated with sufficient information and in a style that eases understanding of the messag...

Background Attentional functioning plays a crucial role in task performance the daily facets of life, and impairments attention are present multitude psychiatric disorders such as Alzheimer’s, Parkinson’s, stroke, schizophrenia. The assessment has been achieved by Attention Network Test (ANT) various research which is computerized testing measure that was developed to these three networks viz. ...