A Study on the Open Source Digital Library Software's: Special Reference to DSpace, EPrints and Greenstone

The richness in knowledge has changed access methods for all stake holders in retrieving key knowledge and relevant information. This paper presents a study of three open source digital library management software used to assimilate and disseminate information to world audience. The methodology followed involves online survey and study of related software documentation and associated technical manuals.Comment: 9 Pages, 3 Figures, 1 Table, "Published with International Journal of Computer Applications (IJCA)

Novel Framework for Hidden Data in the Image Page within Executable File Using Computation between Advanced Encryption Standard and Distortion Techniques

The hurried development of multimedia and internet allows for wide distribution of digital media data. It becomes much easier to edit, modify and duplicate digital information. In additional, digital document is also easy to copy and distribute, therefore it may face many threats. It became necessary to find an appropriate protection due to the significance, accuracy and sensitivity of the information. Furthermore, there is no formal method to be followed to discover a hidden data. In this paper, a new information hiding framework is presented.The proposed framework aim is implementation of framework computation between advance encryption standard (AES) and distortion technique (DT) which embeds information in image page within executable file (EXE file) to find a secure solution to cover file without change the size of cover file. The framework includes two main functions; first is the hiding of the information in the image page of EXE file, through the execution of four process (specify the cover file, specify the information file, encryption of the information, and hiding the information) and the second function is the extraction of the hiding information through three process (specify the stego file, extract the information, and decryption of the information).Comment: 6 Pages IEEE Format, International Journal of Computer Science and Information Security, IJCSIS 2009, ISSN 1947 5500, Impact Factor 0.42

Open source repositories: Implications for libraries

Software that is accepted as “Open source” should comply with 10 conditions which are itinerated in the paper. The paper subsequently describes the application of open source initiatives in the digital library context. Three open source digital library initiatives developed by the Digital Library Research Group at the Faculty of Computer Science and information Technology, University of Malaya are highlighted. These are; (a) MyManuskrip: digital library of Malay manuscripts; (b) MyAIS : Digital library of Malaysian scholarly journals and conference proceedings; and (d) DSpace@Um: a digital library of dissertations, theses and final year project reports. Other “free” systems such as EJUM: electronic journal of university of Malaya is also described to highlight the slight difference between open source and being free. The paper also describes the libraries involved in the initiatives and the changing eco-system which libraries must accept to embrace the open source culture

Improved Lower Bounds on Mutual Information Accounting for Nonlinear Signal-Noise Interaction

In fiber-optic communications, evaluation of mutual information (MI) is still an open issue due to the unavailability of an exact and mathematically tractable channel model. Traditionally, lower bounds on MI are computed by approximating the (original) channel with an auxiliary forward channel. In this paper, lower bounds are computed using an auxiliary backward channel, which has not been previously considered in the context of fiber-optic communications. Distributions obtained through two variations of the stochastic digital backpropagation (SDBP) algorithm are used as auxiliary backward channels and these bounds are compared with bounds obtained through the conventional digital backpropagation (DBP). Through simulations, higher information rates were achieved with SDBP, {which can be explained by the ability of SDBP to account for nonlinear signal--noise interactionsComment: 8 pages, 5 figures, accepted for publication in Journal of Lightwave Technolog

An Academic Approach to Digital Forensics

This is the accepted manuscript version of the following article: O. Angelopoulou, and S. Vidalis, “An academic approach to digital forensics”, Journal of Information Warfare, Vol. 13(4), 2015. The final published version is available at: https://www.jinfowar.com/journal/volume-13-issue-4/academic-approach-digital-forensics © Copyright 2017 Journal of Information Warfare. All Rights Reserved.Digital forensics as a field of study creates a number of challenges when it comes to the academic environment. The aim of this paper is to explore these challenges in relation to the learning and teaching theories. We discuss our approach and methods of educating digital forensic investigators based on the learning axioms and models, and we also present the learning environments we develop for our scholarsPeer reviewe

Open access repository for the brazilian literature on agroecology.

The Brazilian technical and scientific literature on Agroecology is plentiful, is scattered and of difficult access and the hypothesis is that the knowledge of the area was produced but is composed by a knowledge to be organized. These features are barriers and constrains for farmers to use agricultural information as well as for providers of extension services to meet information needs of farmers. In this direction there is a consensus among researchers who study the information that the adequate alternative and adopted in the entire world are the open access digital repositories. Besides taking into account all essential actions to manage technical and scientific information, the open access digital repositories contribute to better communication process of Science. This occurs because such tools create necessary conditions to researchers to have timely, quickly, easy and perpetual access to the information they need to develop their activities. Also help to disseminate the results and provide increase on citation, researcher and institution visibility. A digital repository can be institutional or by topic where the institutional manages and fosters the scientific production of the institution as a whole. Repositories by topic make evident the stage of development of a scientific community. The objective is to describe how the collection of journal and magazines articles, conference papers, documents published by NGOs, government papers, dissertations and thesis, documents on the Internet, agricultural research produced by institutes and universities, etc. will be redeem to create and manage an open access digital repository of the Brazilian bibliographic production on Agroecology host by the Organic Eprints