Browsing by Subject "impact"
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- ItemOpen AccessChallenges with measures used for assessing research impact in higher education institutions(2024) Mfengu, Andiswa; Raju, JayaInternationally, there has been a push for the prioritisation of research impact beyond its scholarly contribution. Traditionally, research impact assessments have focused on academic impact and quantitative measures, at the expense of researchers for whom research impact cannot be quantified. Bibliometric indicators and other quantitative measures are still the most widely used method for evaluating research impact because these measures are easy to use and provide a quick solution for evaluators. Conversely, metric indicators fail to capture important dimensions of high-quality research. Hence, in this study, we explored challenges with metric indicators. We adopted a case study of the University of Cape Town and used document analysis, a questionnaire survey to collect data from academics and researchers, as well as semi-structured interviews with a sample of academic and research staff. The findings highlight common challenges with quantitative measures, such as bias and discipline coverage, and the ability of measures to drive researchers’ behaviour in another direction. We propose the adoption of responsible research metrics and assessment in South African higher education institutions for more inclusive and equitable research impact assessments. Significance: • The study highlights the importance of understanding the challenges and influence of current measures used for assessing research impact in higher education institutions. • There is a need for higher education leaders, policymakers and funders to advocate and support responsible metrics. • Higher education leaders, funders and policymakers need to collaborate at the national level to initiate and support research assessment reform.
- ItemOpen AccessCharacterisation of Glass Fibre Polypropylene and GFPP based Fibre Metal Laminates at high strain rates(2011-12) Govender, Reuben Ashley; Langdon, Genevieive; Nurick, GeraldFibre reinforced polymers (FRP) are finding increasing use in structures subjected to high rate loading such as blast or impact. Proper design of such structures requires thorough characterisation of the material behaviour over a range of loading rates from quasi-static to impact. This thesis investigated the quasi-static and impact response of Glass Fibre Polypropylene (GFPP) in compression, bending and delamination. The bending and delamination response of Fibre Metal Laminates (FMLs) based on GFPP and aluminium was also investigated at quasi-static and impact rates. High strain rate (5x10^2 to 10^3 /s) compression tests were conducted on GFPP using a compressive Split Hopkinson Pressure Bar (SHPB) and a Direct Impact Hopkinson Pressure Bar (DIHPB), in the through-thickness and in-plane directions. In both loading directions, the peak stress of GFPP increased linearly with the logarithm of strain rate. For in-plane loading, the failure modes were dominated by localised fibre buckling and kink bands, leading to delamination. The through thickness loading produced macroscopic shear and spreading failure modes. However, both of these failure modes are linked to in-ply fibre failures, due to through thickness compression causing transverse tensile strain. Previous studies of similar materials have not explicitly stated the link between through thickness compression and fibre failure associated with transverse tensile strain. A novel test rig was developed for Three Point bend testing at impact rates. The specimen was supported at the outer points on a rigid impacter and accelerated towards a single output Hopkinson Pressure Bar (HPB), which impacted the specimen at its midspan. Previous impact bend test rigs based on HPBs were limited to testing specimens with deflections to failure up to approximately 1mm, whereas the rig implemented herein measured deflections up to approximately 10 mm. This configuration permits the output HPB to be chosen purely on the magnitude of the expected impact force, which resulted in superior force resolution to configurations used in other studies. The HPB Impact Bend rig was used to test GFPP and aluminium-GFPP FML specimens, at impact velocities ranging from 5 to 12 m/s. The flexural strength of GFPP increased with strain rate, while the flexural response of the FML specimens was relatively insensitive to strain rate. v Several candidate delamination test geometries were investigated at quasi-static displacement rates (1 mm/min), and the Single Leg Bend (SLB) test was identified as suitable for adaptation to higher rate testing. Single Leg Bend delamination tests of both GFPP and FML specimens were performed using the HPB Impact Bend rig, at impact velocities of 6 to 8 m=s. The shape of the force displacement response for the high rate testswas markedly different from the quasi-static tests, for both the GFPP and FML specimens. Finite element (FE) simulation of the quasi-static and impact rate SLB tests on GFPP indicated that the difference was probably due to the interaction of flexural vibrations and stress waves in the specimen and the impacter cross member. The experimental results and FE analysis suggest that the delamination fracture toughness of GFPP decreases slightly as strain rate increases. High rate delamination tests on FML specimens resulted in unstable crack growth.
- ItemOpen AccessCleaner energy cooler climate: developing sustainable energy solutions for South Africa(2011) Winkler, HaraldFor South Africa, finding a policy approach which balances the increasing demand for energy with the need for sustainability, equity and climate change mitigation is a particular challenge. Energy and climate change are issues of critical importance for shaping a sustainable future, both in South Africa and globally. This book provides an innovative and strategic approach to climate policy, with local development objectives as its starting point.
- ItemOpen AccessCuration for participation: an eight-step guide to curating open scholarly content(2014) Rother, Kyle; Goodier, Sarah; Czerniewicz, Laura; Nyahodza, LenaThis Guide is for anyone who finds themselves curating scholarly and educational content at UCT, even if you don’t know that it is called curation. You may be a postgraduate student tasked to put a professor’s research output online, or you may be a communications officer whose tasks have now extended to curating content. You may be a webmaster who finds that you are asked to upload all kinds of resources. You may be employed parttime, or on an adhoc basis. You probably won’t have a qualification in digital curation or library science. You will probably have little to no experience in this type of work. But you find yourself in this position. So, what needs to be done?
- ItemOpen AccessDoes the DHET research output subsidy model penalise high-citation publication? A case study(2016) Harley, Yolande X; Huysamen, Esmari; Hlungwani, Carlette; Douglas, TaniaAbstract South African universities are awarded annual subsidy from the Department of Higher Education and Training (DHET) based on their research publication output. Journal article subsidy is based on the number of research publications in DHET-approved journals as well as the proportional contribution of authors from the university. Co-authorship with other institutions reduces the subsidy received by a university, which may be a disincentive to collaboration. Inter-institutional collaboration may affect the scientific impact of resulting publications, as indicated by the number of citations received. We analysed 812 journal articles published in 2011 by authors from the University of Cape Town’s Faculty of Health Sciences to determine if there was a significant relationship between subsidy units received and (1) citation count and (2) field-weighted citation impact. We found that subsidy units had a significant inverse relationship with both citation count (r= -0.247; CI = -0.311 – -0.182; p less than 0.0001) and field-weighted citation impact (r= -0.192; CI= -0.258 – -0.125; p less than 0.0001). These findings suggest that the annual subsidy awarded to universities for research output may inadvertently penalise high-citation publication. Revision of the funding model to address this possibility would better align DHET funding allocation with the strategic plans of the South African Department of Science and Technology, the National Research Foundation and the South African Medical Research Council, and may better support publication of greater impact research.
- ItemOpen AccessEmbedding open data practice: Developing indicators on the institutionalisation of open data practice in two African governments(2015-06) van Schalkwyk, Francois; Willmers, Michelle; Schonwetter, TobiasFinal research report of the “Embedding open data practice: Developing indicators on the institutionalisation of open data practice in two African governments” project, which formed part of the World Wide Web Foundation’s "Emerging Impacts of Open Data in Developing Countries" Phase 2 initiative. In order to address the principle question of whether open data practice is being embedded, the project undertook a comparison of government open data in South Africa and Kenya, with a particular focus on open licensing as a key indicator of openness.
- ItemOpen AccessResponding to the Initial Challenge of the COVID-19 Pandemic: Analysis of International Responses and Impact in School and Higher Education(Multidisciplinary Digital Publishing Institute, 2022-02-07) Stracke, Christian M.; Burgos, Daniel; Santos-Hermosa, Gema; Bozkurt, Aras; Sharma, Ramesh Chander; Swiatek Cassafieres, Cécile; dos Santos, Andreia Inamorato; Mason, Jon; Ossiannilsson, Ebba; Shon, Jin Gon; Wan, Marian; Obiageli Agbu, Jane-Frances; Farrow, Robert; Karakaya, Özlem; Nerantzi, Chrissi; Ramírez-Montoya, María Soledad; Conole, Grainne; Cox, Glenda; Truong, ViThis paper presents and analyses solutions where open education and open science were utilised to reduce the impact of the COVID-19 pandemic on education. The COVID-19 outbreak and associated lockdowns created huge challenges in school and higher education, demanding sudden responses which aimed to sustain pedagogical quality. Responses have varied from conservative to radically innovative. Universally, the COVID-19 pandemic disrupted and shocked societies worldwide, and education systems were on the front line. The lockdowns largely stopped face-to-face and formal education in almost all countries, and in most cases, distance learning soon became the ‘new normal’. A central challenge concerned sustaining educational visions and ideals in such circumstances. To better understand the state of the art in the educational landscape, we collected case studies from 13 countries during the first year of the pandemic starting on 11 March 2020 (when the World Health Organization declared a pandemic). This paper presents summaries of the full country reports that were collected and describe lessons learned. Our overall aim was to identify good practices and recommendations from the collected case studies that can be taken forward in the future. We categorised the responses on the three generic educational levels (macro, meso and micro) and identified seven key aspects and trends that are valid for all or most countries: (1) formal education at a distance for first time; (2) similar approaches for formal education; (3) missing infrastructure and sharing open educational resources; (4) diverse teaching and learning methods and practices; (5) open education and access to open educational resources; (6) urgent need for professional development and training for teachers and (7) assessing and monitoring learning environments, teachers and students. Finally, we identified key recommendations on how open education and open science can benefit formal education in schools and universities in the future, namely, improved awareness of open educational practices, provision of ICT infrastructure, embracing and sustaining the practice of open access publications and OERs, capacity building for stakeholders and finally encouraging research and development in the area of open education and open science. We found significant evidence for the proposition that open education and open science can support both traditional face-to-face and distance learning.
- ItemOpen Access
- ItemOpen AccessThe vulnerability, impacts, adaptation and climate services advisory board (VIACS AB v1.0) contribution to CMIP6(2016) Ruane, Alex C; Teichmann, Claas; Arnell, Nigel W; Carter, Timothy R; Ebi, Kristie L; Frieler, Katja; Goodess, Clare M; Hewitson, Bruce; Horton, Radley; Kovats, R Sari; Lotze, Heike K; Mearns, Linda O; Navarra, Antonio; Ojima, Dennis S; Riahi, Keywan; Rosenzweig, Cynthia; Themessl, Matthias; Vincent, KatharineThis paper describes the motivation for the creation of the Vulnerability, Impacts, Adaptation and Climate Services (VIACS) Advisory Board for the Sixth Phase of the Coupled Model Intercomparison Project (CMIP6), its initial activities, and its plans to serve as a bridge between climate change applications experts and climate modelers. The climate change application community comprises researchers and other specialists who use climate information (alongside socioeconomic and other environmental information) to analyze vulnerability, impacts, and adaptation of natural systems and society in relation to past, ongoing, and projected future climate change. Much of this activity is directed toward the co-development of information needed by decision-makers for managing projected risks. CMIP6 provides a unique opportunity to facilitate a two-way dialog between climate modelers and VIACS experts who are looking to apply CMIP6 results for a wide array of research and climate services objectives. The VIACS Advisory Board convenes leaders of major impact sectors, international programs, and climate services to solicit community feedback that increases the applications relevance of the CMIP6-Endorsed Model Intercomparison Projects (MIPs). As an illustration of its potential, the VIACS community provided CMIP6 leadership with a list of prioritized climate model variables and MIP experiments of the greatest interest to the climate model applications community, indicating the applicability and societal relevance of climate model simulation outputs. The VIACS Advisory Board also recommended an impacts version of Obs4MIPs and indicated user needs for the gridding and processing of model output.