The aim of this project is to develop a document management system that is able to deliver access
to anyone authorized anytime, anyplace on any device. The system developed makes use of rich
internet technology to replace desktop application with rich internet application. The system shares the advantage of both web application and desktop application, and removes the most disadvantages of both. The problems solved in this system includes
Absence of support
No support for a document type simply means no access to the content of the document.
Complexity of various software packages
Different document type use different software package which work in the way differ dramatically,
Which significantly reduce the usability.
Security
Virus and Spy ware hidden in the document
Maintenance
The longer the lifetime of software, more bugs will be exposed. Update and configuration on each
client can be a headache.
At the end of the project, a web based document management system is developed. The built-in
document type supports are Microsoft Word, PDF, and Postscript. This system enable user to
manage document within the web browser and without any support installed. In other word, the
only requirements are an internet connection and a web browser.
This paper proposes a mechanism called Personal Digital Library (PDL) for network based personal computers. PDL provides a new Web service paradigm. The Memex (“memory extender”) device proposed by Vannevar Bush aimed at solving the problems of "locating relevant information in published records and recording how that information is intellectually connected". Proposed as a new information infrastructure based on the Web and personal computers, PDL is a Memex-like entity enhanced with the ability to connect and interact with each other. Information like bookmarks in a PDL can be made shareable with other PDLs. A web-based memex is formed by linking PDLs together. Bookmarks are organised with other shareable information, rather than placed into a separate file. External PDLs can serve as memex to overcome storage limitation in the local computer and avoid information duplication. PDL integrates current Web and file services such as browsing, retrieving, publishing, organising and searching information. PDL applies the bookshelf metaphor for users to organise their books and personal folders. PDL also provides intelligent support during navigation. For instance, users can know which books in the PDL related to a particular topic are frequently visited. PDL also has efficient notification and subscription mechanisms for its bookmarks. PDL proposes a new type of collaboration, users can know the "traces" left by another visitor. This paper gives the details on PDL design and prototyping.
In contrast, Johnson found that adults with a clear task are more tolerant of retrieval delays than casual browsers (as cited in Johnson, 1998). Johnson and Kavanagh, however, cast some doubt on this finding when they noticed generally negative attitudes toward a lengthy download time in children, even in children deemed task-oriented (as cited in Johnson, 1998). Johnson (1998) defended his earlier findings by suggesting the possibility of a difference in adult and children's attitude toward retrieval delays. But he admitted that with so little research available in this area, it is dangerous to generalize beyond the experimental conditions of the investigations.
As early as 1945, Vannevar Bush proposed a personal information machine called Memex (memory extender) [1]. Memex later became an influential idea and by the 1980s it was hailed as the inspiration for hypertext and new ways to organise and retrieve information. To deal with the explosion of scientific information, Bush’s proposal for Memex focused on the problems of "locating relevant information in the published record and recording how that information was intellectually connected" [1]. Memex was never built. The expansion of information will be more serious as the Internet grows. Researchers have to consider the problems of "locating relevant published records in the published machines and recording how those records are intellectually connected". Today's personal computer has a huge storage and surprising speed, so it is available for use as a published machine, i.e. a server. In the near future, all computers will be network-based and server-based. This means that people can publish information and 1 Department of Electrical & Computer Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260 Fax: (65)779 1103 email:eleguans@nus.edu.sg 2 School of Computer Science and Computer Engineering,
La Trobe University, Vic. 3083, Australia allow other people to use their information resources. They can also visit any computer around the world, use the information resources inside and carry out online discussion. This paper proposes a new service paradigm for a network-based personal computer to publish, browse, search, retrieve, and organise information on the Web. To avoid duplications with file systems, this mechanism organises information collections including application programs, but adds new features to meet the needs arising from the integration with the Internet.
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