Cryptography is the science of using mathematics to encrypt and decrypt data and Steganography is the art and science of hiding communication; a steganographic system thus embeds hidden content in unremarkable cover media so as not to arouse an eavesdropper"s suspicion. A novel scheme for the embedding data in images is CrypSteg in this method combined cryptography and Steganography process in one algorithm. First we encrypt the data and then embed with image with new Steganography algorithm. The method is very efficient especially when applied to those images whose pixels are scattered homogeneously and for small data. The given image is partitioned into four level blocks, and the data will be embedded into selected the four diagonal subblocks values depend upon key. This algorithm only requires fewer steps and it can embed data efficiently without discarding image. Embedding 4 bits information in a 4*4 pixel block need to change very less pixels on average. Furthermore, the quality of the produced stego-images is better than that of other methods. The quality of stego-image is greatly improved when this algorithm is used.

WWW has become the center of attraction for business transactions and hence e-commerce due to its ease of use and speed. its ability from tracking the browsing behaviour of any user to even the mouse clicks of any individual has brought the vendor and end customer closer than ever before.WWW has made it possible for vendors to advertize their products i.e. they are personalizing their product messages for individual customers at a very large scale such a phenomenon is termed as mass communication such a utility is not only applicable for e-commerce but also such personalization is aiding several web browsing activities. Any action that tailors the web experience to any individual or several users is termed as web personalization. Web personalization is that the method of customizing an internet website to the wants of specific users, taking advantage of the information noninheritable from the analysis of the user's guidance behaviour(Weblog data) in correlation with alternative data collected within the web context, namely, structure, content and user profile information. The domain of web personalization has gained importance both in the area of research and commerce. In this paper we proposed a framework of web log mining to implicit measures of user interests through Country and predicting users" future requests in WWW.

Wimax stands for worldwide interoperability for microwave access. Wimax Technology that enables ubiquitous delivery of the wireless broadband service for fixed and/or for mobile users . wimax is wireless digital communication system also known as 802.16 . which is intended for wireless " Metropolitan area networks " .The challenge for Broadband Wireless Access networks is in provides the quality of service (QoS) simultaneously to services with very different characteristics. QoS support in wireless networks is a much more difficult task than in wired networks, mainly because the characteristics of a wireless link are highly variable and unpredictable, both on a time-dependent basis and a location dependent basis. A special requirement for mobile device is ability to change the serving BS ,if there exists another BS , for example better link quality to reach of MS . we consider an interworking architecture of wireless mesh backbone and propose an effective vertical handoff scheme between 802.11 and 802.16 wireless access networks. The proposed reducing handoff signaling overhead on the wireless backbone and providing a low handoff delay to mobile nodes.While handoff a mechanism to maintain uninterrupted user communication session during a user movements from one location to another . Wimax supports for various types off handoff to maintain communication .