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- ItemOpen AccessBridge-building between the 2017 and 2018 hake RC assessment models(2018) Andrea, Ross-Gillespie; Butterworth, Doug S; Deon, Durholtz; Mike, BerghThis document builds on FISHERIES/2018/MAY/SWG-DEM/20, which summarised changes made to the hake Reference Case (RC) assessment model over the period from May 2017 to May 2018. Following the tabling of DEM/20, one further update has been made to the RC model, namely that CPUE and catch data based on species splitting algorithm Model A6b (instead of Model A6) are now being used for the RC. However, rather than re-run all the bridge-building models, the results from DEM/20 have been retained and thus compare the various “snapshots” with the RC model at that time (i.e. May 2018). Results for the most recent (July 2018) RC model using the model A6b data have been included in the tables, but not the figures, in the interests of time, given that what is more important here is to indicate impacts in relative (not necessarily absolute) terms. Note further that during the course of the workshop it became apparent that the information provided in Appendix A was not complete; hence this document has been revised to address this, with further information provided in Appendix A, and an Appendix C is now added with information from one of the workshop working papers.
- ItemMetadata onlyThe case of OpenUCT: Increasing access to UCT's research and teaching outputs(2013-06) Goodier, Sarah; Czerniewicz, LauraOpenUCT's ePoster submission to the 5th African Conference for Digital Scholarship and Curation (ADSC5), held in Durban (26 -- 28 June 2013). That the research and teaching output of universities is largely hidden is well documented. Ironically the rise of open access policies in the global north (see http://sparceurope.org/analysis-of-funder-open-access-policies-around-the-world/ for many policies requiring this) means that there is a danger of academic outputs from the global south become even more invisible and marginalised. Through the OpenUCT Initiative we worked with 16 local academics from a broad range of faculties and departments to improve their online visibility. They are unlikely to be typical of all academics as they were a self-selecting sample, all interested in and to varying extents with an existing online presence. This poster reports on our investigation into their online visibility and the extent to which their outputs were available openly. These academics were searched for on Google Scholar by name and the findings showed that of the average 7.69 relevant outputs per academic in the top ten results, only 2.94 were openly available (i.e. did not require a subscription to access the full text). It also reports on a sub set of the group who explicitly set out to improve the online visibility of their work, and the results of those efforts. In conclusion, drawing on this small study, this poster will discuss some lessons learnt regarding of the curation of academic outputs and the challenges of sharing and promoting content in the online space.
- ItemOpen AccessExploration of a safe-guard criterion for OMP2018 in the eventuality that the M. capensis CPUE and survey indices of abundance drop too low(2018) Ross-Gillespie, Andrea; Butterworth, Doug SA value is sought for the M. capensis combined CPUE and survey index of abundance J which would constitute the threshold below which additional (supra-OMP) management measures would need to be taken (probably in the form of moving the distribution of offshore trawling to deeper waters) to safeguard this resource in circumstances where its abundance had dropped too low. A simple approach suggests that a threshold value of 0.6 would be appropriate to identify and achieve some reasonable response to a recruitment failure, whilst limiting instances of responses to false positives where there was in fact no problem.
- ItemOpen AccessFirst set of robustness tests conducted for OMP2018(2018) Ross-Gillespie, Andrea; Butterworth, Doug SResults are presented for a total of ten robustness tests. The first five robustness tests investigate alternative assumptions regarding future surveys and commercial catchability. Further robustness tests involve testing alternative mortality-at-age vectors and sensitivity to data arising from different species splitting algorithms. The final robustness tests explored in this document decrease past or future carrying capacity, simulating a situation where expected recruitment fails. For all robustness tests, simulations suggest that OMP2018 is able to provide adequate management advice for the situations simulated. For robustness tests simulating predictable situations (e.g. if it were known that surveys would be discontinued in the future), the OMP needs to be re-tuned to avoid adverse impacts on TACs and/or resource status. The Appendix reports the results of three additional robustness tests concerning future surveys requested by the Panel during the course of the workshop, none of which indicated that OMP2018 would not be able to provide adequate management advice.
- ItemRestrictedThe Limits of Democratic Governance in South Africa(2015) Mattes, RobertIf, as promised by the book’s title, you are looking for a good overview of the current state of local government in South Africa, this is not the place to find it. What this book does do is provide a historical narrative of governance – or what the authors call the ‘local state’ in South Africa’s rural areas over the last three centuries. The authors take us from Dutch and British colonial-era, top down ‘prefectoralism’, to the Union government practice of using white district officers to govern rural areas in concert with co-opted or intimidated African chiefs, through to apartheid-era ‘Bantu administration’ with white officials ‘seconded’ to homeland authorities. But the real contribution of the book is the authors’ argument that the current paradigm of South African local government (democratic elections notwithstanding) retains the most important themes of previous epochs. Locked into a partnership of ‘cooperative governance’ with central government, the ultimate purpose of local government is to achieve national priorities as defined by central government, rather than to provide a site of autonomous, democratic self-government at the local level. Local government works today as it has for decades, and even centuries, as a deconcentrated form of national government service delivery and state presence at the local level, rather than a form of decentralised authority.
- ItemOpen AccessList of possible robustness tests for the 2018 OMP review(2018) Ross-Gillespie, Andrea; Butterworth, Doug SThis document provides an overview of past hake OMP robustness tests suggestions (sometimes with associated motivation) from various sources, and goes on to propose an order of priority for addressing them. The order is suggested more as a basis to initiate discussions than one with firm preferences.
- ItemMetadata onlyMAMI: An R-package for model selection and model averaging after multiple imputation(2015-09-07) Schomaker, MichaelThe package performs model selection/averaging on multiply imputed datasets and combines the resulting estimates. The package also provides access to less frequently used model averaging techniques and offers integrated bootstrap estimation.
- ItemOpen AccessProjection results for OMP2018, as well as other CMPs tested(2018) Andrea, Ross-Gillespie; Butterworth, Doug SPerformance statistics are contrasted for seven hake CMPs: three options for the b control parameters crossed with two options for the cap on the TAC, and further a no cap option for the b+5% option. Despite a higher average catch, the no cap option seems undesirable because of poor lower 5%ile depletion and high AAV values. Instances of low 5%ile depletion values for M. capensis are shown to be linked to three likely less plausible OMs amongst the nine OMs that make up the Reference Set. However, in those cases, with the 2017 starting M. capensis spawning biomasses below BMSY, the CMPs would seem to secure a recovery towards BMSY. Based on these results, the DAFF DWG decided to propose the b+5% option with a cap of 160 000t on the annual TAC.
- ItemRestrictedReview: Cities of Gold, Townships of Coal: Essays on South Africa's new urban crisis(Cambridge University Press, 2002) Butler, AnthonyOne of South Africa’s most prolific writer’s o urban development, Patrick Bond has collected together fourteen of his essays on urban and housing policy failure over the first five years of ANC rule. Bond and his assorted co-authors’ reflections on the ‘heroic struggle over urban liberalism’ – and their self-conception as spokespersons for the oppressed – in addition provide a window on to the soul of what Bond describes as South Africa’s ‘radical petit-bourgeois intelligentsia’.
- ItemRestrictedReview: The Anatomy of Contemporary South Africa(2005-12) Butler, AnthonyIn 1995, eminent social scientist Mark Orkin described the apartheid-era Human Sciences Research Council (HSRC) as an instrument of the National Party and a vehicle for the 'racialisation' of social scientific research.3 The HSRC continues to reflect the priorities of government, albeit now defined in terms of poverty reduction, rural development, job creation and improved service delivery. The HSRC is a statutory body, reporting annually to a national parliament that allocates its core funding, and securing much of its substantial contract income from government departments. This highly politicised environment, however, seems to have done nothing to curtail the independence of mind of the volumes' editors, based in the council's democracy and governance research programme. Contributors address themselves to policies rather than to personalities, to be sure, and there is an ostentatious registering at every turn of just how far the country has come since 1994. However, it is the seriousness of contributors' engagement with government priorities and initiatives that gives their critical appraisals genuine bite, and makes them valuable reading for policy-makers and practitioners, and not just for scholars.
- ItemOpen AccessSecond set of robustness tests conducted for OMP2018(2018) Ross-Gillespie, Andrea; Butterworth, Doug SResults are provided for a further 24 robustness tests for OMP2018. All tests have been conducted for the RC OM, and most do not have an appreciable impact on the assessment and projection results. The tests with the biggest impact were increasing or decreasing the proportion of the total fishing mortality in the offshore catch on M. paradoxus, adjusting the weights of the ALK and CAL data in the negative log-likelihood, accounting for discards and adjusting the ageing assumptions. None of these robustness tests, however, suggest serious concerns for the conservation of the hake resource when managed under OMP-2018.
- ItemOpen AccessSpecification and Conditioning of the Hake OMP2018 Reference Set models(2018) Andrea, Ross-Gillespie; Butterworth, Doug S"Specification and Conditioning of the Hake OMP2018 Reference Set models" is work that has been presented at MARAM International Workshop (IWS) 2018.
- ItemMetadata onlyUCT Accents(2018-06-29) Bangeni, Abongwe; Hutchings, Cathy; Madiba, Mbulungeni; McKinney, Carolyn; Rycroft, AlanDuring 2015, students and staff at UCT drew attention to a wide range of forms of discrimination, including racist and sexist practices experienced across the institution. One of the issues include prejudice on individuals accents when communicating in English. This short video is expressing the findings of the investigation on the issues of accents at UCT presented in a report by Glynnis Lloyd.