Browsing by Subject "decentralisation"

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    Metropolitan Restructuring (And More Restructuring) in South Africa
    (Wiley, 2005) Cameron, Robert
    This article analyses the evolution of metropolitan government in South Africa. During the past ten years South Africa has progressed from having no metropolitan government, to a two-tier metropolitan system and now to a single-tier metropolitan system. The ruling African National Congress (ANC) prefers single-tier metropolitan authorities as a means to, inter alia, promote redistribution of resources and services, promote strategic land-use planning and facilitate economic and social development. A single-tier system was accordingly introduced in 2000. The major thrust of this article is an examination of the process that led to the introduction of six metropolitan governments, and the theoretical debates that underpinned this decision. It also analyses new types of executive systems, forms of public participation, development and service delivery. Finally, it provides a preliminary analysis of the performance of the new metropolitan governments. The article argues that structural reform, territorial changes, development in local government and new forms of service delivery have seriously overburdened local government in the short term and have detracted from service delivery. These unitary metros have, however, been operating for less than four years and must be given time to prove themselves before an informed evaluation can be made.
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    Understanding scalability in distributed ledger technology
    (2020) Clark, Jonathan; Georg, Co-Pierre
    Distributed ledger technology (DLT) stands to benefit industries such as financial services with transparency and censorship resistance. DLT systems need to be scalable to handle mass user adoption. Mass user adoption is required to demonstrate the true value of DLT. This dissertation first analyses scalability in ethereum and EOS. Currently, ethereum 1.0 uses proof of work (PoW) and handles only 14 transactions per second (tps) compared to Visa's peak 47 000 tps. Ethereum 2.0, known as Serenity, introduces sharding, proof of stake (Casper), plasma and state channels in and effort to scale the system. EOS uses a delegated proof of stake (DPoS) protocol, where 21 super-nodes, termed ‘block producers' (BPs), facilitate consensus, bringing about significant scalability improvements (4000 tps). The trade-off is decentralisation. EOS is not sufficiently decentralised because the BPs yield significant power, but are not diverse. This dissertation conducts an empirical analysis using unsupervised machine learning to show that there is a high probability collusion is occurring between certain BPs. It then suggests possible protocol alterations such as inverse vote weighting that could curb adverse voting behaviour in DPoS. It further analyses whether universities are suitable BP's before mapping out required steps for universities to become block producers (leading to improved decentralisation in EOS)