Browsing by Author "Adagunodo, Rotimi"

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    Open Access
    Computational Modeling of Collaborative Resources Sharing in Grid System
    (Springer Link, 2011-03) Oluwatope, Ayodeji; Iyanda, Duada; Aderounmu, Ganiyu; Adagunodo, Rotimi
    In grid computing, Grid users who submit jobs or tasks and resources providers who provide resources have different motivations when they join the Grid system. However, due to autonomy both the Grid users’ and resource providers’ objectives often conflict. This paper proposes autonomous hybrid resource management algorithm aim at optimizing the resource utilization of resources providers using “what-you-give-is-what-you-get” Service Level Agreements resource allocation policy. Utility functions are used to achieve the objectives of Grid resource and application. The algorithm was formulated as joint optimization of utilities of Grid applications and Grid resources, which combine the resource contributed, incentive score, trustworthiness and reputation score to compute resource utilization. Simulations were conducted to study the performance of the algorithm using GridSim v5.0. The simulation results revealed that the algorithm yields significantly good result because no user can consume more than what it contribute under different scenarios; hence the problem of free riding has been addressed through this algorithm. KeywordsResource scheduling–Grid System–Computational modeling
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    Open Access
    HCI Practices in the Nigerian Software Industry
    (Human-Computer Interaction, 2015-09-18) Ogunyemi, Abiodun; Lamas, David; Adagunodo, Rotimi; Da Rosa, Barreto
    In this paper we explore the state of HCI practices in the Nigeriansoftware industry. Our societies have evolved quickly into an information age,and the criticality of software and humans as components of socio-technicalsystems becomes more worthy to address. In Nigeria, the level of HCI practicesis not yet known. We understand clearly, the role of software systems andservices to strengthen information societies, and we decided to run a survey ofthe local software organizations. The results from the survey indicate some levelof HCI awareness. Therefore, we conducted some semi-structured interviews inorder to deepen our understanding of HCI practices in the industry. The resultsshow there is a knowledge limit regarding HCI practices in the industry. Wepresent a preliminary report of the results obtained from our studies of softwareorganizations in Nigeria
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    Open Access
    Modelling User-Centered Attributes: The Web Search Engine as a Case
    ( Knowledge Organization, 2015-01-26) Akhigbe, Ijesunor; Afolabi, Babajide; Adagunodo, Rotimi
    This paper modeled user-centered attributes with which First and Second-order Measurement Models (I'SoMM) were proposed using factor analysis in a quantitative evaluative procedure. There was need to relate users needs as requirements for Web Search Engines (WeSKs) in a dynamic context. This informed the motivation for formulating the FSoMM to possess baseline properties with reasonable validity and reliability. This was achieved by considering how users "seek out and use" information as useful characteristics that can suffice as users' attributes. This is because of the belief in this paper that factors modelled from users' attributes encapsulate users' needs. With the qualitative evaluative approach these factors were translated into users' requirements for WeSEs' development. Results obtained showed that both models demonstrated reasonable model fit. Therefore, users' requirements can be communicated with measurement models. As illustrated in this paper, both the qualitative and quantitative evaluative approach remain an invaluable resource in this respect. We therefore infer that WeSEs' success in the delivery of assistance to users, particularly in a dynamic context must be based, not only on the progress of technology, but also on users' requirements.