Faculty of Technology

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Browsing Faculty of Technology by Author "Adagunodo, Emmanuel Rotimi"

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    A Computer Simulation Model of Optimum Sized Tractor Selection for Agricultural Mechanization
    (Obafemi Awolowo University, 1985) Adagunodo, Emmanuel Rotimi; Jaiyesimi, S. B.; Mensah, E. K.
    A computer simulation model for the selection of optimum-sized tractors based upon the durability and minimum cost analysis of the tractor has been developed. There is the need to optimize tractor sizes so as to minimize the cost and increase the productivity of farm mechanization process. The optimal replacement period and reliability of the tractor are considered in this study with respect to the volume of utilization of such tractor. A procedure for determining tractor optimum size through the replacement period and reliability analysis is presented in the study. The results of the study establish that two tractor models - David Brown 995 and 990 - of 62 and 58 horsepower respectively are recommended for the two categories of tractor owners and users involved in the study. DB 995 has been considered adequate for the private commercial farmers who cultivate between (30-40) hectares of land and DB 990 is recommended as the optimum machine for the government-owned tractor hiring units. The results of the work show further that a few policy implications may arise from changes in the two important quantities - maintenance and purchase costs of the tractor. A low maintenance and high purchase costs lead to extended replacement period and high durability. On the other hand, high maintenance and cheap purchase price of the tractor result in shortened replacement period and low durability for the tractor. The need to stop any subsidies on tractor purchase price and provide subsidized maintenance and repairs and also establish more government-owned tractor hiring units is stressed in the study.
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    An Empirical Model for Information Retrieval System Evaluation: The User's perspective
    (Computer Engineering and Intelligent Systems, 2011-01) Akhigbe, Bernard Ijesunor; Afolabi, Babajide; Adagunodo, Emmanuel Rotimi
    The aspect of time has become an issue since computers were introduced into management studies and thus highlights the need for efficient paradigm that will enable easy access to information, with much ease. But this is not the case yet, since finding the desired search engine and learning how to use them for this purpose is still time consuming. The continued dominance of measures for use in the system-centered aspect of IR evaluation, which is weak for use in user-centered IR system evaluation process, remains a challenge. Therefore the purpose of this study is to present usable measures through using an empirical from user’s perspective for use in the evaluation of IR system. The survey method, a robust multivariate mathematical model and the factor analytic method were experimented upon. Results showed that the model presented is promising concerning the challenges highlighted. Therefore user’s own knowledge, experience and searching abilities could be harnessed and implicated in IR design and evaluation. This study therefore serves as a test bed and guide to studies in this area, which results could contribute immensely to the overall improvement of the system. However, more data and a larger sample size are required to verify the proposed model in future, with other extraction techniques.
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    Theory, Practice and Policy: An Inquiry into the Uptake of HCI Practices in the Software Industry of a Developing Country
    (INTERNATIONAL JOURNAL OF HUMAN–COMPUTER INTERACTION, 2016-05) Loizides, Fernando; Da Rosa, Isaias Barreto; Ogunyemi, Abiodun Afolayan; David Lamas; Adagunodo, Emmanuel Rotimi
    Withalmostfour decadesofexistenceasa community, human–computerinteraction(HCI) practice has yet to diffuseinto a large rangeof softwareindustries globally.A reviewof existing literaturesuggeststhatthe diffusion of HCI practices in software organizations lacks theoretical guidance. Although many studies have tried to facilitate HCI uptake by the software industry, there are scarce studies that consider HCI practices as innovations that software organizations could or should adopt. Furthermore, there appears to be a lack of structure in the facilitation of HCI methodological development within the specialized emerging regions field such as Sub-Saharan Africa. In order to address this gap, an exploratory investigation regarding the state of uptake of HCI practices in Nigeria is conducted. The aim of this article is to improve our understanding regarding the state of HCI uptake in developing countries and the challenges prevailing. The findings show that HCI practice still remains within its infancy stage in most software companies. Universities are also lacking the required knowledge transfer of HCI to the students, and in effect themselves contributing to the lack of HCI skills in industry. Furthermore, government policies are in need of refinement and end-users’ involvement in software development is not prioritized