Improvements in hardware, communication technology and database have led to the explosion of multimedia information repositories. In order to provide the quality of information retrieval and the quality of services, it is necessary to consider both retrieval techniques and database architecture. This paper presents the project named VLSHDS-Very Large Scale Hypermedia Delivery System. The qualit...

introduction: with the increasing role of the internet as one of the most important sources of information on the one hand, and the enhancement of its usability on the other, it is necessary for web designers and developers to be familiar with the criteria that make a website usable. therefore, this paper aimed to provide knowledge about the interactivity, changeability , and non-textual conten...

e-mail has become an important means of electronic communication but the viability of its usage is marred by Unsolicited Bulk e-mail (UBE) messages. UBE consists of many types like pornographic, virus infected and 'cry-for-help' messages as well as fake and fraudulent offers for jobs, winnings and medicines. UBE poses technical and socio-economic challenges to usage of e-mails. To meet this cha...

Denoising filters are useful for reducing noise; however, they often blur and smear the edges and boundaries, which are necessary for segmenting or locating the objects. In order to overcome above problem, many filters with contrast enhancement capability have been developed, and they have wide applications in related fields. Recently, researchers found that the traditional criteria, such as me...

This paper presents a methodology for the enhancement of a hypertext version of a textbook. The enhancement over the textual version of the textbook is achieved by automatically inserting links between text excerpt of the textbook and item in the subject index produced by the author of the textbook. These links enable accessing parts of the textbook that have not been speci cally indexed by the...