Browsing by Author "Hasan S"

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    A Novel Weighted Clustering Algorithm Supported by a Distributed Architecture for D2D Enabled Content-Centric Networks
    (MDPI (Basel, Switzerland), 25/09/2020) Aslam S; Alam F; Hasan S; Rashid M
    Next generation cellular systems need efficient content-distribution schemes. Content-sharing via Device-to-Device (D2D) clustered networks has emerged as a popular approach for alleviating the burden on the cellular network. In this article, we utilize Content-Centric Networking and Network Virtualization to propose a distributed architecture, that supports efficient content delivery. We propose to use clustering at the user level for content-distribution. A weighted multifactor clustering algorithm is proposed for grouping the D2D User Equipment (DUEs) sharing a common interest. The proposed algorithm is evaluated in terms of energy efficiency, area spectral efficiency, and throughput. The effect of the number of clusters on these performance parameters is also discussed. The proposed algorithm has been further modified to allow for a tradeoff between fairness and other performance parameters. A comprehensive simulation study demonstrates that the proposed clustering algorithm is more flexible and outperforms several classical and state-of-the-art algorithms.
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    Proximity to healthcare centres and service use: The case of Community Clinics in Bangladesh
    (John Wiley and Sons Ltd on behalf of European Bank for Reconstruction and Development, 2023-07) Hasan S; Akter T; Jahan M; Dewan A
    We investigate how distance from healthcare centres affects service utilization for women and children. Relying on five rounds of recent nationally representative demographic and health survey data from Bangladesh, our logistic regression analyses reveal that proximity to healthcare centres barely affects the utilization of healthcare services for women and children, even in rural areas. Interestingly, this indicates that the government's preferred Community Clinics have not significantly contributed to the country's uptake of healthcare services. The low-service utilization may result from their poor standard at the local health centres indicating that improving the service quality can help Bangladesh raise the uptake of healthcare services.