Volume 2, Issue 7, July 2012


Miniaturized Band Pass Filter using Interdigital Capacitor for C-band [Download Paper]

Sanjeev Maheshwari, Arvind Kumar Pandey and Piush Kumar Singh

Abstract—The paper describes the design and development of compact band pass filter using intergital capacitor. The simulated result of band pass filter using interdigital capacitor with shorted stub shows good response for 3.42 to 6.87 GHz .The corresponding lumped equivalent and transmission-line equivalent circuits are provided for circuit design purpose. Compared with the classical band pass filters, the proposed filter is of a relatively simple in size and compact configuration. The filter has attractive features of wide bandwidth and high rejection ratio. The designed filter can be used at input of uplink and downlink of satellite communication. 

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An ICT Based SCADA-NET Simulator System for Teaching and Learning in the Nigerian Universities [Download Paper]

Ndunagu Juliana Ngozi

Abstract - Innovations in technology are bound to influence the way Universities teach and students learn. Nigerian Universities are faced with the challenge of producing graduates with competencies and skills to equip them to compete in today’s knowledge economy. This paper is geared towards introducing an ICT-based SCADA-NET (Supervisory Control And Data Acquisition-Network) simulator for teaching and learning in Nigerian Universities. The four components of the new technique are –(i) Sensors, (ii) Remote Telemetry Units (RTUs), (iii) SCADA master units, (iv) The Communications Network. The Components are integrated depending on the area of application. It was concluded that if the new technique is embraced by the Nigerian Government and the Components acquired by each University, learning will be interesting, students will relax and feel natural with the training, teaching becomes much easier, teaching efficiency is increased, there will be reduction in teaching cost because less time is dissipated. Nigeria graduates will globally be employable in any part of the World.

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Diffusion of Cybercrime in the Nigerian Cash-Less Economy: Using Double Level Authentication [Download Paper]

Ndunagu Juliana Ngozi and Okunade Oluwasogo Adekunle

Abstract—The Central Bank of Nigeria (CBN) Policy on the Nigerian Cash-less economy is aimed at reducing the high usage of cash, moderate the cost of cash management and encourage the use of electronic payment channels. This paper is geared towards designing a double level authentication (password and biometric authentication) for a credit card user in order to reduce the number of credit card frauds in the e-payments channels. A flowchart was designed and an algorithm was used to describe the steps of the process. The basic authentication (password) has three chances of trial, while the biometric (fingerprint) has only one chance of trial since fingerprint is unique to each individual and do not change over time. The double-level authentication will require some modifications in both the software and hardware of the existing devices, thereby; demanding the manufacturers of devices to include biometric (fingerprint scanning) structure in all their new products for fraud free e- transactions. It is recommended that every transaction should go through double confirmation before a user will have a successful e-transaction.