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Reconfiguring the OMWESO board game: performing narratives of Buganda material culture

- Kirumira, Rose Namubiru

Authors: Kirumira, Rose Namubiru
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/146512 , vital:38532 , https://www.ru.ac.za/artsofafrica/latestnews/presentationreconfiguringtheomwesoboardgameperformingnarrativesofbug.html
Description: As a Writer in Residence in the Fine Art Department at Rhodes, she is pursuing research on the omweso board game, which she has reinterpreted in her own sculptural work in recent years. As a sculptor, Dr. Kirumira has produced exhibitions such as “Faces” (1996) and “Personalities” (2010) at Tulifanya Art Gallery in Kampala. Her strength is creating monumental sculptures, and she has produced a number of public monuments and projects such as the sculptures for the Don Bosco Vocational School Chapel, Kamuli, 1997. Working under the renowned Prof. Francis Naggenda, she made the statue of “King Ronald Mutebi” at the Buganda Parliament and the work “Family” at Mulago Hospital Kampala. She also made the two famous sculptures "Mother Uganda" and "UNDP" at the former UNDP Headquarters, and has produced monumental sculptures in Canada, Denmark and China.
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Date Issued: 2017

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Recovering AES-128 encryption keys from a Raspberry Pi

- Frieslaar, Ibraheem, Irwin, Barry V W

Authors: Frieslaar, Ibraheem , Irwin, Barry V W
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/427740 , vital:72459 , https://www.researchgate.net/profile/Ibraheem-Frieslaar/publication/320102039_Recovering_AES-128_Encryption_Keys_from_a_Raspberry_Pi/links/59ce34f1aca272b0ec1a4d96/Recovering-AES-128-Encryption-Keys-from-a-Raspberry-Pi.pdf
Description: This research is the first of its kind to perform a successful side channel analysis attack on a symmetric encryption algorithm executing on a Raspberry Pi. It is demonstrated that the AES-128 encryption algorithm of the Crypto++ library is vulnerable against the Correlation Power Analysis (CPA) attack. Furthermore, digital processing techniques such as dynamic time warping and filtering are used to recovery the full encryption key. In Addition, it is illustrated that the area above and around the CPU of the Raspberry Pi leaks out critical and secret information.
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Date Issued: 2017

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Recovering AES-128 encryption keys from a Raspberry Pi

- Frieslaar, Ibrahim, Irwin, Barry V W

Authors: Frieslaar, Ibrahim , Irwin, Barry V W
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/428383 , vital:72507 , https://www.researchgate.net/profile/Ibraheem-Frieslaar/publication/320102039_Recovering_AES-128_Encryption_Keys_from_a_Raspberry_Pi/links/59ce34f1aca272b0ec1a4d96/Recovering-AES-128-Encryption-Keys-from-a-Raspberry-Pi.pdf
Description: This research is the first of its kind to perform a successful side channel analysis attack on a symmetric encryption algorithm executing on a Raspberry Pi. It is demonstrated that the AES-128 encryption algorithm of the Crypto++ library is vulnerable against the Correlation Power Analysis (CPA) attack. Furthermore, digital processing techniques such as dynamic time warping and filtering are used to recovery the full en-cryption key. In Addition, it is illustrated that the area above and around the CPU of the Raspberry Pi leaks out critical and secret information.
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Date Issued: 2017

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Refocusing the traumatic past (an essay in two parts):

- de Jager, Maureen

Authors: de Jager, Maureen
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/147380 , vital:38631 , https://0-hdl.handle.net.wam.seals.ac.za/10520/EJC-a867f5bb0
Description: In the greater landscape of South Africa’s traumatic past, the South African War of 1899-1902 is arguably “old history”, surpassed in time and importance by more pressing traumas. Moreover, because it was usurped by Afrikaner nationalism as a myth of national origin and used to justify claims of Afrikaner sovereignty, it is also often seen as “old Afrikaner history”: at best, an episode of limited relevance to the many South Africans effectively written out of this narrative; at worst, a platform for nostalgic hankering by a conservative few.
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Date Issued: 2017

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Reimag [in] ing the village as a portrait of a nation-state in Uganda:

- Kakande, Angelo

Authors: Kakande, Angelo
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/145642 , vital:38454 , https://doi.org/10.1162/AFAR_a_00343
Description: In this article I reexamine the ways in which certain contemporary artists based in Uganda problematize the narrative that the ruling National Resistance Movement (the NRM) party is the party of the rural poor (Cheeseman, Lynch, and Willis 2016) in their work while using it as a metaphor to inform their visual expression. I focus on the contest between tradition (imagined as a village) and modernity (imagined as a modern state), as well as the dilemma such a contest causes for a contemporary artist. Cornelius Adepegba (1995) argues that this dilemma influenced the African novel. Agreeing with Adepegba, Freeborn Odiboh (2009) observes that the same dilemma has shaped African visual artists, such as Abayomi Barber, and formal art education institutions like the Barber School in Nigeria; Odiboh then assesses the historical context in which this dilemma evolved as African nationalists struggled to forge postcolonial states based on a national consciousness amid competing ethnic, religious, and ideological interests.
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Date Issued: 2017

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Reimagining our missing histories: Eria Nsubuga SANE and Sikhumbuzo Makandula in conversational partnership

- Makandula, Sikhumbuzo, Nsubuga, Eria

Authors: Makandula, Sikhumbuzo , Nsubuga, Eria
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/145620 , vital:38452 , https://0-doi.org.wam.seals.ac.za/10.1162/AFAR_a_00345
Description: While an interview could be described as a view among, between, betwixt, or in the midst of two subjects—from s'entrevoir (see each other); entre (between) and vue (view)—many interviews in art history are hierarchical not only in the sense of an interviewer “authoring” the material received from the respondent, but also in the sense of the theorist or writer shaping the ideas of the practitioner. As discussed in the First Word, “Situating Africa,” there is a tendency for writers in the “north” to theorize the professional practice of artists in the “south,” developing what Gordon Lewis (2006) refers to as a geography of reason. In their book Qualitative Interviewing: The Art of Hearing Data, Herbert J. Rubin and Irene S. Rubin (2012:7) develop the term “conversational partnership” to describe two or more participants who play an active role in shaping content as they cocreate meaning. This conversational partnership between two artists—one based in Uganda and the other based in South Africa—developed out of the publishing workshop at Rhodes University in June 2016, which aimed to approach the creation of knowledge from the perspective of “sideways learning” (see “Reaching Sideways, Writing Our Ways” in this issue). —Ruth Simbao.
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Date Issued: 2017

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Relative features of the principal and secondary luminescence lifetimes in quartz

- Chithambo, Makaiko L, Ogundare, F O

Authors: Chithambo, Makaiko L , Ogundare, F O
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/125821 , vital:35820 , https://doi.10.1002/pssc.200673721
Description: Quartz is a common natural mineral with properties that make it amenable for application in radiation dosimetry using luminescence methods [1]. The luminescence properties of quartz including its sensitivity and luminescence lifetimes undergo notable changes when the quartz is annealed, and in particular, near its phase inversion temperatures of 573 and 867 oC [2, 3]. The physical processes leading up to the emission of luminescence in quartz may be investigated using time-resolved optical stimulation. The aim of this method is to separate in time the stimulation and emission of luminescence to enable measurement of time-resolved luminescence spectra which may be resolved into associated lifetimes, defined in this sense as the delay between stimulation and emission of luminescence [4, 5]. A number of such studies show that annealing defines the detailed distribution of lifetimes with measurement temperature as well as the irradiation-dependent characteristics of the lifetimes [3, 6]. In particular, it was noted [3] that spectra measured at certain temperatures could be accurately resolved into more than one component, a scenario that pointed to the possibility of involvement of multiple luminescence centers in the emission of luminescence from quartz. The aim of this work is to build on the findings described, specifically to study the influence of measurement temperature and irradiation on the principal and subsidiary luminescence lifetimes in natural quartz.
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Date Issued: 2017

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Reproductive justice in context: South African and Zimbabwean women’s narratives of their abortion decision

- Chiweshe, Malvern T, Mavuso, Jabulile M-J J, Macleod, Catriona I

Authors: Chiweshe, Malvern T , Mavuso, Jabulile M-J J , Macleod, Catriona I
Date: 2017
Subjects: To be catalogued
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/444371 , vital:74223 , xlink:href="https://doi.org/10.1177/0959353517699234"
Description: The abortion decision-making process is embedded within overlapping power relations. Using a post-colonial feminist framework, we analyse South African and Zimbabwean women’s narratives regarding their abortion decision. As neighbouring countries, South Africa and Zimbabwe provide a useful counterpoint as they have common and differing social histories and very different abortion legislation. In our analysis, we unpick transversal commonalities and divergences in the discursive resources deployed by the women in their narratives in the two sites. Commonalities included the women feeling compelled to justify their abortion decision in the interactive interview space, an absence of a reproductive rights discourse, and the deployment of relationship embedded discourses in the justificatory work performed by the women. The ‘‘conjugalisation of reproduction’’, ‘‘imperative of good mothering’’, and ‘‘unstable partner relationships’’ discourses featured across both sites but the manner in which these were deployed differed. These discursive resources allowed the women to position themselves as making responsible decisions. The Zimbabwean women spoke of shame and hiding, a discursive resource that was explicitly absent in the South African women’s accounts. We conclude by arguing that our post-colonial feminist approach allows for a contextualised reproductive justice stance to abortion decision-making that identifies both transnational and context-specific power relations.
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Date Issued: 2017

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Resisting the desire for the unambiguous: productive gaps in researcher, teacher and student interpretations of a number story task

- Graven, Mellony, Coles, Alf

Authors: Graven, Mellony , Coles, Alf
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/69673 , vital:29564 , https://DOI: 10.1007/s11858-017-0863-7
Description: This article offers reflections on task design in the context of a Grade R (reception year) in-service numeracy project in South Africa. The research explores under what conditions, and for what learning purpose, a task designed by someone else may be recast and how varying given task specifications may support or inhibit learning, as a result of that recasting. This question is situated within a two-pronged task design challenge as to emerging gaps between the task designer’s intentions and teacher’s actions and secondly between the teachers’ intentions and students’ actions. Through analysing two teachers and their respective Grade R students’ interpretations of a worksheet task, provided to teachers in the project, we illuminate the way explicit constraints, in the form of task specifications, can be both enabling and constraining of learning. In so doing we recast this ‘double gap’ as enabling productive learning spaces for teacher educators, teachers and students.
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Date Issued: 2017

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Riding the waves: Journalism education in post-apartheid South Africa

- Garman, Anthea, van der Merwe, Mia

Authors: Garman, Anthea , van der Merwe, Mia
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/158405 , vital:40181 , https://0-doi.org.wam.seals.ac.za/10.1177/1077695817720679
Description: Since 1994, South African journalism education has undergone waves of introspection about curricula and methods of teaching as educators respond to the challenging realities of the post-apartheid environment. The most recent challenge to journalism educators is the student protests which started at the end of 2015, questioning the high costs of education and demanding “decolonization” of curricula. The traditional alignment with media companies has also been upended as the drastic contraction of newsrooms removes the promise of jobs upon graduation and the swiftly shifting digital terrain rearranges the financial basis of all journalism. These factors introduce a dynamism and uncertainty into South African journalism that educators are compelled to respond to with imagination and principle.
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Date Issued: 2017

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Role of structural bioinformatics in drug discovery by computational SNP analysis: analyzing variation at the protein level

- Brown, David K, Tastan Bishop, Özlem

Authors: Brown, David K , Tastan Bishop, Özlem
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/125921 , vital:35832 , https://doi.10.1016/j.gheart.2017.01.009
Description: With the completion of the human genome project at the beginning of the 21st century, the biological sciences entered an unprecedented age of data generation, and made its first steps toward an era of personalized medicine. This abundance of sequence data has led to the proliferation of numerous sequence-based techniques for associating variation with disease, such as genome-wide association studies and candidate gene association studies. However, these statistical methods do not provide an understanding of the functional effects of variation. Structure-based drug discovery and design is increasingly incorporating structural bioinformatics techniques to model and analyze protein targets, perform large scale virtual screening to identify hit to lead compounds, and simulate molecular interactions. These techniques are fast, cost-effective, and complement existing experimental techniques such as high throughput sequencing. In this paper, we discuss the contributions of structural bioinformatics to drug discovery, focusing particularly on the analysis of nonsynonymous single nucleotide polymorphisms. We conclude by suggesting a protocol for future analyses of the structural effects of nonsynonymous single nucleotide polymorphisms on proteins and protein complexes.
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Date Issued: 2017

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Seasonal population dynamics and energy consumption by waterbirds in a small temperate estuary

- Hean, Jeffrey W, Craig, Adrian J F K, Richoux, Nicole B

Authors: Hean, Jeffrey W , Craig, Adrian J F K , Richoux, Nicole B
Date: 2017
Subjects: To be catalogued
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/456305 , vital:75501 , xlink:href="https://doi.org/10.2989/00306525.2016.1230897"
Description: Simple measures of population dynamics and energy consumption can provide baseline information on the role of consumers in food webs, particularly for cryptic or highly-mobile species of waterbirds. We provide estimates of the seasonal population dynamics and energy consumption of waterbirds along the Kowie Estuary, South Africa. Ten census counts were conducted every month along the estuary from June 2013 to May 2014. Energy consumption and fresh-matter intake were calculated based on body-mass equations. Piscivorous birds dominated the waterbird assemblage during summer (up to 289 individuals), whereas non-migratory shorebirds were dominant at other times of the year. The total wet mass of prey items ingested by waterbirds ranged from 2.8 kg ha−1 during winter to 8.5 kg ha−1 during summer. The total energy consumption of waterbirds ranged from 12 543 kJ ha−1 during June to 33 104 kJ ha−1 during December. Shannon–Wiener diversity calculations revealed that the Kowie Estuary had a greater diversity of waterbirds than several other South African estuaries, but less diversity than many large European estuaries. Studies that incorporate census counts and energy consumption measures, although rudimentary, may provide valuable information on resource use by waterbirds in estuaries and may benefit conservation management schemes.
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Date Issued: 2017

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Secondary metabolites from Tetracera potatoria stem bark with anti-mycobacterial activity.

- Fomogne-Fodjo, M C Y, Ndinteh, Derek T, Olivier, Denise K, Krause, Rui W M, Kempgens, Pierre, Van Vuuren, S

Authors: Fomogne-Fodjo, M C Y , Ndinteh, Derek T , Olivier, Denise K , Krause, Rui W M , Kempgens, Pierre , Van Vuuren, S
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/125556 , vital:35795 , https://doi.org/10.1016/j.jep.2016.11.027
Description: Ethnopharmacological relevance Tetracera potatoria Afzel. Exg. Don (Dilleniaceae) is a medicinal plant used traditionally in Africa for the treatment of tuberculosis related ailments and respiratory infections. The antibacterial activity of the medium polar extracts of T. potatoria leaves and stem bark was recently reported against Mycobacterium smegmatis (MIC 25 µg/mL) and M. aurum (65 µg/mL), two fast-growing Mycobacterium strains used as model micro-organisms for the more pathogenic strain Mycobacterium tuberculosis (Fomogne-Fodjo et al., 2014). The aim of this study was consequently to isolate the compounds possibly contributing to this activity, and which may therefore be promising precursors to be used for the development of novel anti-TB drugs.
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Date Issued: 2017

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Secrets, lies and redemption:

- Boshoff, Priscilla A, Prinsloo, Jeanne

Authors: Boshoff, Priscilla A , Prinsloo, Jeanne
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/143381 , vital:38241 , DOI: 10.1080/00020184.2017.1285671
Description: Confession is a central disciplining technology deployed in the second series of Intersexions, a popular South African TV series that seeks to change sexual and social behaviours that contribute to the risk of HIV infection. The article considers the ‘edu’ part of this edutainment programme, specifically with the nature of the lessons and with the form of ‘disciplining’ the narratives presuppose for gendered and sexual subjects. Central to this critical and constructivist exploration of the gender relationships that are validated and expurgated are Foucault’s notions of discourse and confession as a technology of self. We argue that the series presents a range of different gendered and sexual subjectivities but implicitly endorses a modern subjectivity and transformation at the level of the individual.
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Date Issued: 2017

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SHA-1, SAT-solving, and CNF

- Motara, Yusuf, M, Irwin, Barry V W

Authors: Motara, Yusuf, M , Irwin, Barry V W
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/428408 , vital:72509 , https://researchspace.csir.co.za/dspace/bitstream/handle/10204/9692/Motara_19661_2017.pdf?sequence=1andisAllowed=y
Description: Finding a preimage for a SHA-1 hash is, at present, a computationally intractable problem. SAT-solvers have been useful tools for handling such problems and can often, through heuristics, generate acceptable solutions. This research examines the intersection between the SHA-1 preimage problem, the encoding of that problem for SAT-solving, and SAT-solving. The results demonstrate that SAT-solving is not yet a viable approach to take to solve the preimage problem, and also indicate that some of the intuitions about “good” problem encodings in the literature are likely to be incorrect.
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Date Issued: 2017

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Singly and Doubly N-Confused Calix [4] phyrin Organoplatinum (II) Complexes as Near-IR Triplet Sensitizers

- Pushpanandan, Poornenth, Maurya, Yogesh Kumar, Omagari, Toshihiro, Hirosawa, Ryuji, Ishida, Masatoshi, Mori, Shigeki, Yasutake, Yuhsuke, Fukatsu, Susumu, Mack, John, Nyokong, Tebello, Furuta, Hiroyuki

Authors: Pushpanandan, Poornenth , Maurya, Yogesh Kumar , Omagari, Toshihiro , Hirosawa, Ryuji , Ishida, Masatoshi , Mori, Shigeki , Yasutake, Yuhsuke , Fukatsu, Susumu , Mack, John , Nyokong, Tebello , Furuta, Hiroyuki
Date: 2017
Subjects: To be catalogued
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/233144 , vital:50061 , xlink:href="https://doi.org/10.1021/acs.inorgchem.7b02047"
Description: Organoplatinum(II) complexes of calix[4]phyrin analogues, singly N-confused calix[4]phyrin (Pt-2), and doubly N-confused calix[4]phyrin (Pt-3), were synthesized and characterized. The explicit structures of these organoplatinum(II) complexes were elucidated by single-crystal X-ray diffraction and spectroscopic studies. The introduction of N-confused pyrrole rings to the parent calix[4]phyrin scaffold was found to have profound effects on the photophysical properties, such as the bathochromic shifts of both the absorption and phosphorescence maxima. The triplet excited state properties of these platinum complexes were analyzed by DFT calculations at the B3LYP level. The organoplatinum(II) complexes derived from the deformed scaffolds can serve as potent triplet sensitizers for singlet oxygen generation under aerobic conditions.
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Date Issued: 2017

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Situating Africa: an alter-geopolitics of knowledge, or Chapungu rises

- Simbao, Ruth K

Authors: Simbao, Ruth K
Date: 2017
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/146112 , vital:38496 , https://0-doi.org.wam.seals.ac.za/10.1162/AFAR_a_00340
Description: This journal issue marks the beginning of a new partnership with African Arts as Rhodes University in Grahamstown, South Africa, joins the editorial consortium. As the National Research Foundation Chair in Geopolitics and the Arts of Africa, I will work with collaborators based largely on the African continent to produce one issue of African Arts per year. This first issue has grown out of conversations with artists, curators, and writers based in Uganda, Zimbabwe, and South Africa at a publishing workshop organized by Rhodes University, as well as an institutional collaboration with Makerere University in Uganda. It also includes a dialogue with colleagues in Tanzania, Zambia, Nigeria, Egypt, South Africa, Benin, the Democratic Republic of Congo, Zimbabwe, the US, Uganda, and Angola/Portugal. A core goal of our work is to significantly increase the participation of authors based on the African continent as a way of strengthening our discipline with a scholarly approach that takes seriously an alter-geopolitics of knowledge as a decolonial concept (Koopman 2011; Mignolo 2002).
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Date Issued: 2017

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Social Identities and Racial Integration in Historically White Universities: A Literature Review of the Experiences of Black Students

- Bazana, Sandiso, Mogotsi, Opelo P

Authors: Bazana, Sandiso , Mogotsi, Opelo P
Date: 2017
Subjects: To be catalogued
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/453760 , vital:75284 , xlink:href="https://files.eric.ed.gov/fulltext/EJ1187144.pdf"
Description: South African government has been promulgating pieces of legislation aimed at ensuring racial integration, especially in higher education, and indirectly enforcing acculturation in historically white universities. Studies have proven that institutional cultures in historically white universities alienate and exclude black students' identities. These students' sense of social identity, which includes culture, heritage, language and traditions, and consequently self-esteem and self-concept, is altered in these institutions. Research has been scant regarding the shape and form that black students' identity assumes when they get to these spaces. Using Tajfel and Turner's (1979) social identity theory and Berry's (2005) theory of acculturation, this article explores the experiences of black students in negotiating their social identities in historically white universities. Evoking Steve Biko's analysis of 'artificial integration' (1986), we hope to illustrate how the 'integration'.
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Date Issued: 2017

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