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    Open Access
    Systems Development of a Two-Axis Stabilised Platform to Facilitate Astronomical Observations from a Moving Base
    (2019-01-28) Hepworth, James H.; Mouton, Henrik D.
    This project aimed to design, simulate, and implement a two-axis inertially stabilised platform (ISP) for use in astronomical applications. It aimed to approximate the stabilisation of a Meade ETX-90 3.5” compound telescope at low-cost using a mechanical assembly designed to geometrically and inertially model the telescope. A set of system specifications was developed to guide design decisions and to provide an analysis framework against which the performance of the implemented system was compared. The electro-mechanical structure of the ISP was designed and manufactured, the associated electrical systems were specified and configured, an image processing script capable of detecting and locating the centre of the Moon in a camera field-of-view was written, a complete simulation model for the system was developed and used to design various classical controllers for the ISP control system. These controllers were implemented on a STM32F051 microcontroller and a user interface was written in LabVIEW to facilitate intuitive user control of the system and perform datalogging of the system runtime data.
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    Open Access
    UCT Arbitration and Dispute Resolution Unit (ADRU) Collected Paper Series
    (UCT ADRU, 2024-02) Bosman, Lise; Adams, Faadhil
    To inaugurate the ADRU Collected Papers Series, we present a compilation of the works and materials from the African Arbitration Association's 4th Annual Conference, hosted in Cape Town from 12-14 October 2023. This conference – held under the banner "International Arbitration in Africa: Transitions and New Perspectives" – provided a platform for discussing the evolving landscape of international arbitration in Africa. It focused on capturing the currents of change, challenge, and transition in the field, highlighting significant and often positive transformations in thought and practice. The Co-Editors for this inaugural volume are Lise Bosman and Courtney Kemp.
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    Open Access
    Can the wide range of resource behaviours evident across the ABFT MSE interim grid of OMS be “tamed” by the feedback control provided by a CMP?
    (ICCAT, 2020) Butterworth, Doug; Rademeyer, Rebecca
    The interim grid of OMs is used to explore the 30-year projection behaviour for catches and the status of the eastern and western ABFT stocks (expressed in terms of their abundance relative to dynamic Bmsy by the Br30 statistic) for both constant future catches and some simple “Fixed Proportion” CMPs. If current TACs continue unchanged, both stocks are rendered extinct for about 20% of the 96 OMs of the interim grid. Fortunately, however, this undesirable feature can be “tamed” through the feedback control mechanism of the CMPs, which can prevent occurrences of extinction. The trade-off between catches and final abundance across the OMs, as the control parameters of the CMPs are varied from lower to higher harvesting intensities, are illustrated. The need to focus on CMP refinement to reduce the spread of the Br30 distributions across the OMs is stressed. Priorities for future work are listed; these include the use of these CMP results to indicate which of the uncertainty axes in the current grid have the greater impacts on MP performance. The interim grid provides a useful framework to continue this work, even though (together with advice on final management objectives and desired trade-offs) it still awaits finalisation.
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    Open Access
    A Work Systems View of Unplanned Business Process Change: The Case of #feesmustfall at a South African University
    (2019) Joubert, Trevor; Seymour, Lisa
    Aim/Purpose Improving or changing business processes is one of the most important roles for Information technologies functions. Yet, most organizations struggle with planned process change and even more with unplanned change. There is little support from research as the dynamics of planned process change is understud-ied and unplanned process change is seldom researched. Background This paper describes the impact of unplanned business process change from a systems perspective. The #feesmustfall student protest movement, which be-gan in 2015, and affected Universities throughout South Africa provides the context. Methodology An interpretive abductive case study at a South African university used Steven Alter’s Work System framework to describe the unplanned business process change that occurred due to the #feesmustfall student protest movement. Contribution Theoretically, this paper demonstrates the practical use of Alter’s work system framework to analyze unplanned business process change. Practically, it de-scribes and explains the impacts of the change which may be useful to execu-tives or administrators responsible for operational systems within organizations. Findings During unplanned business process change, change management, staff training, customizable technology and strategic fluidity and focus were found to be im-portant. Unplanned business process change results in all elements of the work systems and its environment changing, even resulting in changed products and customer behavior. Impact on Society If organizations are more aware of the impacts of unplanned process change they will be better equipped to control them. Future Research Future action research studies on unplanned business process change could suggest actions for manager’s dealing with them. Keywords business process management, work system theory, systems thinking, un-planned change, #feesmustfall
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    Open Access
    Predatory publishing from the Global South perspective
    (Radical Open Access Conference, 2018-06-29) Raju, Reggie; Nyahodza, Lena; Claassen, Jill
    The publication of research outputs, in the main, has a social justice aim that is enacted by the desire of researchers to share their research findings for the betterment of society. There is a strong belief in the necessity of a symbiotic relationship between reader and researcher. This relationship is supported by the view that access to published knowledge is essential for the production of new knowledge, and new research builds on previous knowledge, establishing its validity through collective scrutiny. Traditionally, research has been made public through journals, meeting proceedings, and books produced largely by commercial publishers, and access to this research has had to be bought.