Browsing by Author "Kehinde, L.O"

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    Open Access
    Hybrid Online Labs
    (IJOE, 2012-11) Ayodele, Kayode.P; Komolafe.A, Olusola; Kehinde, L.O
    One of few limitations of remote laboratory technology is the fact that access and usability of such laboratories depend largely on the existence of favorable bandwidth conditions between the remote user and the system under test. This dependence is regrettable because some of the institutions likely to find remote laboratories attractive are also those most likely to have severe bandwidth limitations. Also, a typical remote laboratory will be completely unusable to remote students in the event of an outright network downtime. In this paper, we propose a hybrid online laboratory architecture that allows the automatic generation of accurate software models of remote laboratories. Such models can be hosted closer to the student and during periods of unfavorable bandwidth conditions, students can successfully interact with such models in lieu of the real hardware. We identify the challenges that need to be resolved for such a scheme to be useful and discuss the process by which suitable modeling bases were chosen. Finally we present and discuss data from a first test of the system and conclude that such a scheme holds considerable promise in changing the way remote laboratories are used and viewed
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    Open Access
    Proxy server experiment and the changing nature of the web
    (International journal of Electronic and Electrical Engineering, 2008-06-18) Abiona, Olatunde; Onime, Clement .E; Anjali, Tricha; Kehinde, L.O
    The use of proxy server could help provide adequate access and response time to large numbers of World Wide Web (WWW) users requesting previously accessed page. While some studies have reported performance increase due to the use of proxy servers, a study reported performance decrease associated with the use of proxy server. Due to lack of recently published scholarly article that test the performance of proxy server, we carry out an in-depth study of the behavior of a proxy server over a six month period. The result of the study showed that hit ratios of the proxy servers range between 21% to 39% and over 70% of web pages are dynamic. The study indicates the effectiveness of the proxy server and helps evaluate the tradeoff between money spent on higher bandwidth lower latency connections, versus the cost/performance of using a caching intermediary.