Browsing by Author "Hasan S"

Now showing 1 - 3 of 3
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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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    New Zealand ethical consumption driven by universalism and personal achievement; can it also be fun?
    (Taylor and Francis Group on behalf of the Royal Society of New Zealand, 2024-10-24) Hasan S; Wooliscroft B; Ganglmair-Wooliscroft A
    Overconsumption and environmental pollution in New Zealand are leading to the depletion of its resources, threatening its ecosystem. This paper explores New Zealanders’ ethical and sustainable consumption behaviour, and the motivations and values that drive them. Seventy in-depth interviews with a variety of ethical consumers were conducted and analysed using laddering technique to uncover drivers behind ethical consumption habits. Results reflect the complexity and variety inherent in ethical consumption, and its motivations and drivers. Most ethical behaviours are environmentally focused, aimed at pollution reduction and environmental conservation. Ethical behaviours with a social focus are directed at the local or the international community. Social justice, equality and unity of nature (all sub-values of universalism) are revealed as drivers of ethical behaviours, and are complemented by personal achievement (feeling capable) and feelings of enjoyment–consuming ethically can also be ‘fun’. The complexity of the findings highlights the need for customised messaging from policymakers and businesses to increase ethical consumption behaviours in New Zealand.
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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.