Welcome to Journal of Theoretical and Applied Information Technology

Author:

Seifedine Kadry, Wassim Hassan

Source:

Journal of Theoretical and Applied Information Technology          pp 111-118,  2008       

Abstract

The basic reasons we care about information systems security are that some of our information needs to be protected against unauthorized disclosure for legal and competitive reasons; all of the information we store and refer to must be protected against accidental or deliberate modification and must be available in a timely fashion. We must also establish and maintain the authenticity (correct attribution) of documents we create, send and receive. Finally, the if poor security practices allow damage to our systems, we may be subject to criminal or civil legal proceedings; if our negligence allows third parties to be harmed via our compromised systems, there may be even more severe legal problems. Another issue that is emerging in e-commerce is that good security can finally be seen as part of the market development strategy. Consumers have expressed widespread concerns over privacy and the safety of their data; companies with strong security can leverage their investment to increase the pool of willing buyers and to increase their market share. We no longer have to look at security purely as loss avoidance: in today’s marketplace good security becomes a competitive advantage that can contribute directly to revenue figures and the bottom line. Networks today run mission-critical business services that need protection from both external and internal threats. In this paper we proposed a secure design and implementation of a network and system using Windows environment. Reviews of latest product with an application to an enterprise with worldwide branches are given.

Author:

Ashim Raj Singla

Source:

Journal of Theoretical and Applied Information Technology          pp 119-131, 2008       

Abstract

Abstract ERP Systems are the most integrated information systems that cut across various organizations as well as various functional areas. It has been observed that ERP systems prove to be a failure either in the design or its implementation. A number of reasons contribute in the success or failure of an ERP systems. Success or failure of ERP system can be estimated on the basis of impact of ERP on that organization. In this paper an attempt has been made to study the impact of ERP systems in mid-sized Indian public sector organizations. For this study, two public sector companies namely PUNCOM and PTL located in northern India have been selected. Based on the model used to study ERP impact and thus the findings, various recommendations have been put forward to suggest a strategy so as to mitigate and manage such successful implementation.

Author:

Mona M. El-Ghoneimy

Source:

Journal of Theoretical and Applied Information Technology          pp  132-139, 2008       

Abstract

Digital watermarking is a method through which we can authenticate images, videos and even texts. Watermarking functions are not only authentication, but also protection for such documents against malicious intentions to change such documents or even claim the rights of such documents. In this paper two watermarking algorithms are simulated. The first algorithm is based on the Discrete Cosine Transform (DCT)(in the frequency domain) and the second algorithm is based on the least significant bit (LSB)replacement (in the spatial domain). The results are shown and compared under different kinds of attacks.

Author:

  Anis Ismail, Mohammad Hajjar, Haissam Hajjar

Source:

Journal of Theoretical and Applied Information Technology          pp 140-148 ,  2008       

Abstract

One of the trends we have been observing for some time now is the blurring of divisional lines between different types of malware. Classifying a newly discovered 'creature' as a virus, a worm, a Trojan or a security exploit becomes more difficult and anti-virus researchers spend a significant amount of their time discussing the proper classification of new viruses and Trojans. Depending on the point of view, very often, the same program may be perceived as a Remote Administration Tool (RAT) allowing a potentially malicious user to remotely control the system. A Remote Administration Tool is a remote control software that when installed on a computer it allows a remote computer to take control of it. With remote control software you can work on a remote computer exactly as if you were right there at its keyboard. With fast, reliable, easy-to-use pc from remote control software, it lets you save hours of running up and down stairs between computers. Remote control software allows you to take control of another PC on a LAN, WAN or dial-up connection so you see the remote computer's screen on your monitor and all your mouse movements and keystrokes are directly transferred to the remote machine. Remote control software provides fast secure access to remote PC’s on Windows platforms. Hackers and malware sometimes install these types of software on a computer in order to take control of them remotely. Many remote administrator tools exist in the market and it is difficult to choose what you need. As you are an IT support, you need to choose the software which leads your IT skills. After you determine how much you want to manage remotely, the next step is to select the tools and supporting components you need to accomplish your remote management tasks. Our paper entails evaluating many remote control software which help you to select the remote administrator tools.

Author:

 Dr.S.S.Riaz Ahamed.

Source:

Journal of Theoretical and Applied Information Technology          pp 149-153 ,  2008       

Abstract

Computer and network security are challenging topics among executives and managers of computer corporations. Internet security is the practice of protecting and preserving private resources and information on the Internet. Even discussing security policies may seem to create a potential liability. As a result, enterprise management teams are often not aware of the many advances and innovations in Internet and intranet security technology. Without this knowledge, corporations are not able to take full advantage of the benefits and capabilities of the network.

Author:

Dr.S.S.Riaz Ahamed

Source:

Journal of Theoretical and Applied Information Technology          pp 154-159 ,  2008       

Abstract

Code Division Multiple Access (CDMA) has gained widespread international acceptance by cellular radio system operators as an upgrade that will dramatically increase both their system capacity and the service quality. CDMA is a "spread spectrum" technology, allowing many users to occupy the same time and frequency allocations in a given band/space. As its name implies, CDMA (Code Division Multiple Access) assigns unique codes to each communication to differentiate it from others in the same spectrum. In a world of finite spectrum resources, CDMA enables many more people to share the airwaves at the same time than do alternative technologies. The core principle of spread spectrum is the use of noise-like carrier waves, and, as the name implies, bandwidths much wider than that required for simple point-to-point communication at the same data rate.

Author:

 Abdelaziz A. Abdelaziz and Hanan A. Kamal

Source:

Journal of Theoretical and Applied Information Technology          pp 160-169 ,  2008       

Abstract

This paper introduces a new application of genetic algorithm (GA) in dynamic sector synthesis of antenna array for mobile base transceiver station (BTS). The basic objective is to have narrow beam widths in heavy handoff areas and wider beam widths in areas with low traffic density. By predefining the beam widths and thus the beams of each sector, optimal sectoring can be achieved using GA at different time of the day as traffic changes. The proposed algorithm consists of the simple GA with new adaptive mutation mechanism. When compared with simple GA, the proposed algorithm shows faster convergence. The results obtained are more stable and having higher fitness.

Author:

S.Senthilkumar

Source:

Journal of Theoretical and Applied Information Technology          pp 170-177 ,  2008       

Abstract

The goal of this paper is focused on developing an efficient design strategy for simulating CNN arrays and hole-filling is implemented using RK step multistep methods to improve the performance of the image or handwritten character recognition. This approach is carried out by analyzing the important features of the hole-filler template and the dynamic process of CNN using well knownr RK step multistep methods to obtain a set of inequalities satisfying its output characteristics as well as the parameter range of the hole-filler template. Simulation results and comparison have also been presented to show the efficiency of the Numerical Integration Algorithms. In this article, the use of new improved fourth and fifth order linear and nonlinear Runge-Kutta methods in starting procedures for the well known RK step multistep methods is adapted to yield greater accuracy compared with using the standard fourth order Runge-kutta method in the application to problems involving discontinuities and severe gradients where the stepsize is frequently changed.