List of Titles

Whatever happened to social indicators in Africa? Whatever happened indeed! A developing world perspective on the Kenneth C. Land and Alex C. Michalos report on 'Fifty years after the Social Indicators Movement'

- Moller, Valerie

Authors: Moller, Valerie
Date: 2017
Language: English
Type: Article
Identifier: vital:24531 , http://hdl.handle.net/10962/36238 , https://link.springer.com/article/10.1007/s11205-017-1555-y
Description: Africa is a latecomer to the Social Indicators Movement. The first social indicators for Third World countries were developed by outsiders and covered almost exclusively topics related to basic needs and development. In response to Kenneth Land's and Alex Michalos' historical assessment and their agenda for future 'social indicators/quality of life/well-being' research, the commentary traces how South Africa and sub-Saharan countries-with a little help from many friends who are pioneers in the movement-have succeeded in developing their own home-grown social indicators movement. Addressing some of the themes outlined in the agenda that Land and Michalos set for future research, the commentary discusses the importance of monitoring social change occurring in African society in a 'post-industrialized and much more globalized, and digitized-computerizedroboticized' era: How will new values and nom1s impact on the quality of life of future generations of African people?
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Date Issued: 2017

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The emergence of the South African farm crime novel : socio-historical crimes, personal crimes, and the figure of the dog

- Naidu, Samantha

Authors: Naidu, Samantha
Date: 2016
Language: English
Type: Article
Identifier: vital:26325 , http://hdl.handle.net/10962/53776 , https://www.ajol.info/index.php/eia/article/view/142930 , https://orcid.org/0000-0001-9456-8657
Description: Crime fiction is an established and popular literary genre in South Africa that has gained international recognition and acclaim. The genre continues to expand and develop in terms of thematic concerns and experiments in form. One such notable development is the farm crime novel, which extends the tradition of the South African plaasroman. Recent texts, such as Elaine Proctor’s The Savage Hour and Karin Brynard’s Weeping Waters, quite deliberately set their respective murder mysteries on remote farms, and both novels particularise details of farm life. This article argues that the main concerns of the farm crime novel are, on one level, socio-historical – that is, the crimes perpetrated are the result of relationships to the land, land claims and land re-distribution, and the complex, evolving relationship between landowner and labourer. On another level, true to the conventions of crime fiction, the farm crime novel also explores interpersonal or intimate relationships that result in crimes of passion. Of particular interest is the observation that common to both thematic levels is a profound rendering of the link between human-animal relations and human-human relations. Drawing on Karla Armbruster’s work on the cultural significance of narratives about dogs and the need for more just and ethical relationships with animals, the article then demonstrates how this rendering occurs, often, through the figure of the dog. To conclude, some comments are offered on the position of the farm crime novel in a post-apartheid literary landscape
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Date Issued: 2016

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Lipophilic M(α,α′-OC5H11)8phthalocyanines (M = H2 and Ni(II)): synthesis, electronic structure, and their utility for highly efficient carbonyl reductions

- Jiang, Yu, Li, Minzhi, Liang, Xu, Mack, John, Wildervanck, Martijn, Nyokong, Tebello, Qin, Mingfeng, Zhu, Weihua

Authors: Jiang, Yu , Li, Minzhi , Liang, Xu , Mack, John , Wildervanck, Martijn , Nyokong, Tebello , Qin, Mingfeng , Zhu, Weihua
Date: 2015-10-07
Subjects: Dalton Transactions (2015), 44, 18237-18246, doi:10.1039/c5dt03256c
Language: English
Type: Article
Identifier: vital:7282 , http://hdl.handle.net/10962/d1020322
Description: A lipophilic and electron-rich phthalocyanine (α,α′-n-OC5H11)8-H2Pc and its nickel(II) complex (α,α′-n-OC5H11)8-Ni(II)Pc have been synthesized and characterized. Detailed analyses of the electronic structure were carried out by spectroscopy, electrochemistry, spectroelectrochemistry, and TD-DFT calculations. A series of experiments demonstrate that the (α,α′-n-OC5H11)8-Ni(II)Pc complex can be used as a catalyst for highly efficient carbonyl reductions. , Original publication is available at http://dx.doi.org/10.1039/C5DT03256C
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Corrole–BODIPY conjugates: enhancing the fluorescence and phosphorescence of the corrole complex via efficient through bond energy transfer

- Chen, Wei, Zhang, Jianfeng, Mack, John, Kubheka, Gugu Patience, Nyokong, Tebello, Shen, Zhen, Wei Chen

Authors: Chen, Wei , Zhang, Jianfeng , Mack, John , Kubheka, Gugu Patience , Nyokong, Tebello , Shen, Zhen , Wei Chen
Date: 2015-06-08
Subjects: RSC Advances (2015), 5, 50962-50967, doi:10.1039/C5RA07250F
Language: English
Type: Article
Identifier: vital:7268 , http://hdl.handle.net/10962/d1020277
Description: New corrole–BODIPY conjugates have been synthesized in high yield under mild conditions. Upon excitation at the absorption maximum of the BODIPY antenna chromophore, the fluorescence intensity of the free base corrole–BODIPY conjugate increases by ca. 300%, and significant phosphorescence intensity is observed for the iridium(III) complex of the conjugate, while almost no phosphorescence is observed for the parent iridium(III) corrole, due to through-bond energy transfer from the BODIPY antenna-chromophore to the corrole core. , Original publication is available at http://dx.doi.org/10.1039/c5ra07250f , Arbortext Advanced Print Publisher 9.1.510/W Unicode , Acrobat Distiller 8.1.0 (Windows); modified using iText� 5.3.3 �2000-2012 1T3XT BVBA (AGPL-version)
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A discourse of disconnect : young people from the Eastern Cape talk about the failure of adult communications to provide habitable sexual subject positions

- Jearey-Graham, Nicola, Macleod, Catriona I

Authors: Jearey-Graham, Nicola , Macleod, Catriona I
Date: 2015
Language: English
Type: Article
Identifier: vital:6308 , http://hdl.handle.net/10962/d1018864 , http://0-hdl.handle.net.wam.seals.ac.za/10520/EJC171669
Description: Face-to-face adult communication with young people about sexuality is, for the most part, assigned to two main groups of people: educators tasked with teaching schoolbased sexuality education that is provided as part of the compulsory Life Orientation (LO) learning area, and parents. In this paper, we report on a study conducted with Further Education and Training College students in an Eastern Cape town. Using a discursive psychology lens, we analysed data from, first, a written question on what participants remember being taught about sexuality in LO classes and, second, focus group discussions held with mixed and same-sex groups. Discussions were structured around the sexualities of high school learners and the LO sexuality education that participants received at high school. We highlight participants’ common deployment of a ‘discourse of disconnect’ in their talk. In this discourse, the messages of ‘risk’ and ‘responsibility’ contained in adult face-to-face communications, by both parents and LO teachers, are depicted as being delivered through inadequate or nonrelational styles of communication, and as largely irrelevant to participants’ lives. Neither of these sources of communication was seen as understanding the realities of youth sexualities or as creating habitable or performable sexual subject positions. The dominance of this ‘discourse of disconnect’ has implications for how sexuality education and parent communication interventions are conducted.
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Date Issued: 2015

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Anton and Vale van der Merwe: reinterpreting Afro-Oriental studio ceramics traditions in South Africa

- Steele, John

Authors: Steele, John
Date: 2015
Language: English
Type: text , Article
Identifier: http://hdl.handle.net/11260/968 , vital:30077
Description: Growing awareness of ancient Chinese Song and Yuan ceramics, amongst other Oriental traditions, by people with western connections such as Bernard Leach and Michael Cardew, in conjunction with influences from Japanese associates such as Soyetsu Yanagi, Kenkichi Tomimoto, and Shoji Hamada, (De Waal 1997, Harrod 2012, Kikuchi 1977, Leach 1976) has had many consequences. It spread a consciousness idealizing self-sufficient pottery studios where potters were in touch with all aspects of creating utilityware, largely from local materials for local use. Out of this emerged an Anglo-Oriental studio ceramic philosophy of form and practice, associated mainly with hand-made high temperature reduction fired ceramics. These ideas spread to South Africa in the late 1950s, and by the early 1960s local studios were being established along these lines. This studio ceramics movement grew exponentially in South Africa, initiating a phase of Afro-Oriental ceramics that remains a powerful way of life and visual arts influence. This paper seeks to explore aspects of Afro- Oriental studio ceramics in South Africa, with particular reference to the Leach/Hamada/Cardew to Rabinowitz, and Van der Merwe lineage.
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Date Issued: 2015

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Applications of social media and web 2.0 for research support in selected African academic institutions

- Owusu-Ansah, Christopher M, Gontshi, Vuyokazi, Mutibwa, Lois, Ukwoma, Scholarstica

Authors: Owusu-Ansah, Christopher M , Gontshi, Vuyokazi , Mutibwa, Lois , Ukwoma, Scholarstica
Date: 2015
Subjects: Social networks , Web 2.0. , Research -- Study and teaching
Language: English
Type: Article
Identifier: vital:6996 , http://hdl.handle.net/10962/d1018520
Description: This study examined the use of Social Media/Web 2.0 for research support and it is guided by three objectives namely: a) to ascertain the uses of social media in academic institutions; b) to identify the challenges associated with social media use for research purposes and c) to provide experiences of social media application in selected African academic institutions. The study makes use of literature analysis in combination with personal and professional work experiences on the use of social media from librarians in four different countries. Institutional experiences of the four librarians showed that it is only Rhodes University Library that uses social media in its library, which is as a result of a formal social media strategy. For the other three universities, University of Education, Winneba Library in Ghana, Makerere University Library in Uganda and the University of Nigeria Library, the use of social media is not encouraging. They use it mostly for communication and interaction with colleagues. It was also discovered that there is no social media strategy available in these university libraries. Based on these findings, the study recommended the implementation of a social media strategy, appointment of social media librarians in these libraries, and continuing professional development of librarians to keep abreast with current trends. Web 2.0/Social Media is a new technology offering new options for African academic librarians in their research support role
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Date Issued: 2015

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Celebrating libraries in 20 years of democracy : an overview of library and information services in South Africa

- Satgoor, Ujala

Authors: Satgoor, Ujala
Date: 2015
Subjects: Libraries , Library administration -- South Africa , Information services -- South Africa , Public libraries -- South Africa , Library science -- South Africa
Language: English
Type: Article
Identifier: vital:6997 , http://hdl.handle.net/10962/d1019841 , ISSN ISSN: 0340-0352 , http://journals.sagepub.com/doi/10.1177/0340035215585100
Description: Since the establishment of the first public library in 1818, the South African library and information services landscape has also been a reflection of the socio-political order and developments in the country. This article presents an historical perspective as well as an overview of libraries in South Africa since 1994, the context within which libraries function, library governance and legislative framework, government funding for redress, library technologies, library and information services education and the professional association. The article further highlights the importance of libraries in meeting the goals of the national development agenda towards entrenching a strong democracy and an educated and informed nation , Original publication is available at: http://dx.doi.org/10.1177/0340035215585100
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Date Issued: 2015

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Comparative photophysicochemical behavior of nanoconjugates of indium tetracarboxyphenoxy phthalocyanines covalently linked to CdTe/ZnSe/ZnO quantum dots

- Oluwole, David O, Nyokong, Tebello

Authors: Oluwole, David O , Nyokong, Tebello
Date: 2015
Language: English
Type: text , Article
Identifier: vital:7294 , http://hdl.handle.net/10962/d1020357 , http://dx.doi.org/10.1016/j.jphotochem.2015.07.009
Description: This work reports on the photophysicochemical behavior of different nanoconjugates of core/shell/shell (GSH-CdTe/ZnSe/ZnO), core/shell (GSH-CdTe/ZnSe) and core (GSH-CdTe) (quantum dots QDs) with indium tetracarboxyphenoxy phthalocyanines ((OH)InTCPPc) in dimethylsulfoxide. The fluorescence quantum yields (Φf) and lifetimes (τf, in brackets) of QDs ranged from 0.20 (13.9 ns) to 0.42 (25.6 ns). The highest Φf value was obtained for GSH-CdTe/ZnSe/ZnO (4.5) while the least was observed in GSH-CdTe/ZnSe/ZnO (7.6), the numbers in brackets refer to the sizes. For (OH)InTCPPc alone a Φf and τf values of 0.02 and 2.43 ns, respectively were obtained. In the nanoconjugates, pivotal decrease in the Φf and τf of the QDs were observed with increase in the triplet and singlet oxygen quantum yields of (OH)InTCPPc. , Original publication is available at http://dx.doi.org/10.1016/j.jphotochem.2015.07.009
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Date Issued: 2015

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Deposition of CdS, CdS/ZnSe and CdS/ZnSe/ZnS shells around CdSeTe alloyed core quantum dots: effects on optical properties

- Adegoke, Oluwasesan, Nyokong, Tebello, Forbes, Patricia B C

Authors: Adegoke, Oluwasesan , Nyokong, Tebello , Forbes, Patricia B C
Date: 2015
Language: English
Type: Article
Identifier: vital:7289 , http://hdl.handle.net/10962/d1020342
Description: In this work, we synthesized water-soluble L-cysteine-capped alloyed CdSeTe core quantum dots (QDs) and investigated the structural and optical properties of deposition of each of CdS, CdS/ZnSe and CdS/ZnSe/ZnS shell layers. Photophysical results showed that the overcoating of a CdS shell around the alloyed CdSeTe core [quantum yield (QY) = 8.4%] resulted in effective confinement of the radiative exciton with an improved QY value of 93.5%. Subsequent deposition of a ZnSe shell around the CdSeTe/CdS surface decreased the QY value to 24.7%, but an increase in the QY value of up to 49.5% was observed when a ZnS shell was overcoated around the CdSeTe/CdS/ZnSe surface. QDs with shell layers showed improved stability relative to the core. Data obtained from time-resolved fluorescence measurements provided useful insight into variations in the photophysical properties of the QDs upon the formation of each shell layer. Our study suggests that the formation of CdSeTe/CdS core/shell QDs meets the requirements of quality QDs in terms of high photoluminescence QY and stability, hence further deposition of additional shells are not necessary in improving the optical properties of the core/shell QDs. Copyright © 2015 John Wiley & Sons, Ltd. , Original publication is available at http://dx.doi.org/10.1002/bio.3013
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Date Issued: 2015

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Insecticidal activities and chemical composition of the essential oil from Tarchonanthus camphoratus (L.), leaves against Sitophilus zeamais Motschulsky, and Sitophilus oryzae (L.)

- Nanyonga, Sarah K, Opoku, Andy R, Lewu, Francis B, Oyedeji, Adebola O

Authors: Nanyonga, Sarah K , Opoku, Andy R , Lewu, Francis B , Oyedeji, Adebola O
Date: 2015
Language: English
Type: text , Article
Identifier: http://hdl.handle.net/11260/711 , vital:29660
Description: The essential oil of Tarchonanthus camphoratus dry leaves growing in Kwa-Zulu Natal, South Africa was obtained by hydrodistillation and evaluated for its repellent effect, contact and fumigation toxicity against both Sitophilus zeamais and Sarocladium oryzae. Chemical composition of the essential oil was analysed by gas chromatography mass spectrometry (GC/MS). The study revealed that the essential oil of T. camphoratus had no contact and fumigation toxicity against stored insect pests, S. zeamais and S. oryzae. The oil, however, showed good repellent activity of over 50% after 24 h for all the concentrations used on both S. zeamais and S. oryzae. A total of 27 compounds accounting for 73% of the total oil composition were identified of which sesquiterpene hydrocarbons, (59.18%), were the most dominant. These results suggest that the essential oil of T. camphoratus could be considered a potential control agent of stored grain pests as a repellent.
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Date Issued: 2015

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Life orientation sexuality education in South Africa: gendered norms, justice and transformation

- Shefer, Tamara, Macleod, Catriona I

Authors: Shefer, Tamara , Macleod, Catriona I
Date: 2015
Language: English
Type: Article
Identifier: vital:6310 , http://hdl.handle.net/10962/d1018868
Description: [From introduction] Research on sexual practices among young South Africans has proliferated in light of the national imperatives to challenge the spread of HIV/AIDS, gender-based violence and unwanted early pregnancies. It has been widely acknowledged that, in order to respond to these social problems, we need to understand the enmeshment of gender, class, age and other forms of social inequality, and how these are played out in ‘normal’ heterosexual relationships. Life Orientation (LO) sexuality education programmes have been viewed as key locations for incorporating education to challenge negative assumptions in respect of HIV/AIDS, gender-based violence and unwanted pregnancy and to promote safer, equitable and non-violent sexual practices. There is a paucity of work that interrogates the LO sexuality education programme in terms of gender norms, gender justice and gender transformation. In the handful of studies conducted on school-based sexuality education in South Africa, researchers have foregrounded a number of challenges, including the dominance of a guiding metaphor of danger and disease in the sexuality education component of LO manuals (Macleod, 2009); educators using a transmission mode of teaching to the exclusion of participation and experiential modes of learning (Rooth, 2005); educators understanding sexuality education as chiefly addressing the provision of information concerning, and prevention of, HIV/AIDS (Francis, 2011); teachers’ preference for abstinence-only education taught by means of a series of moral injunctions (Francis, 2011); and the avoidance of discussions of sexual diversity, and the endorsement of compulsory heterosexuality when same-sex relationships are mentioned (Francis, 2012). Recent research has also highlighted the variation in how teachers approach sexuality education. Francis and DePalma (2014) indicate that, while teachers may promote abstinence as the only appropriate choice for young people, they also recognise the value of teaching relationships and safe sex (aspects associated with comprehensive sexuality education). In their study, Helleve et al. (2009) report that Grades 8 and 9 LO teachers felt confident in teaching HIV and sexuality. This special issue of Perspectives in Education builds on this research by drawing together several papers that examine how LO or Life Skills sexuality programmes challenge and/or reproduce normative constructions of gender and gendered power relations. All the papers use qualitative research to locate these programmes within the complex contexts of their enactment, drawing attention to the multiple possibilities and limitations of such programmes. In the next section, we summarise the key problematics addressed in each of the papers. What curiosities drove the studies conducted by these researchers interested in gender dynamics in schools and LO or Life Skills sexuality education? Why are these curiosities important? We then highlight the key findings that emerged from these curiosities and the nuanced data collected. Finally, and most importantly in terms of the aims of this special issue, we address the ways in which a critical gender lens that facilitates gender transformation and gender justice could possibly be incorporated into LO or Life Skills sexuality programmes.
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Date Issued: 2015

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Maximum firepower: Vale van der Merwe, an emergent ceramic artist at Starways Arts, Hogsback, Eastern Cape, South Africa

- Steele, John

Authors: Steele, John
Date: 2015
Language: English
Type: text , Article
Identifier: http://hdl.handle.net/11260/979 , vital:30078
Description: Vale van der Merwe has been working as a ceramic artist for the past five years, and in that time has developed a remarkably diverse repertoire of both thrown and handbuilt works. These include rapidly thrown utilityware as well as carefully conceived sculptural works that engage with ideas rather than primarily with function. She also makes full use of opportunities offered by high-temperature woodburn firings, and despite works collapsing while being made, breaking while being carried to the kiln and slumping during firing, she has used such occasions as opportunities for learning rather than despondency. Van der Merwe is also an actively hands-on ceramic artist who engages with all levels of tasks associated with studio ceramics in a village setting, so has found herself, for example, both creating a new chimney for the kiln, and simultaneously leading discussion around concepts for new collaborative exhibitions. There is a seriousness of intent combined with infectious confidence evident in both her daily presence and ceramics, and it is hoped that she will develop her repertoire and thinkings even further in forthcoming years.
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Date Issued: 2015

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Mercaptopyridine-substituted indium, zinc, and metal-free phthalocyanines: nonlinear optical studies in solution and on polymer matrices

- Bankole, Owolabi M, Nyokong, Tebello

Authors: Bankole, Owolabi M , Nyokong, Tebello
Date: 2015
Language: English
Type: Article
Identifier: vital:7278 , http://hdl.handle.net/10962/d1020313
Description: In this article, the nonlinear optical characterizations and optical limiting properties of metal-free (2), zinc (3), and indium (4) tetra 4-(2-mercaptopyridine) phthalocyanines are discussed. Nonlinear optical properties of the samples were evaluated using Z-scan at 532 nm and 10 ns pulse in CHCl3, and doped on poly(bisphenol A carbonate) (PBC) thin films. Thin films for 2, 3, and 4 are represented as 2-PBC, 3-PBC, and 4-PBC, respectively. We observed two-photon absorption (2PA) and strong reverse saturable absorption as the dominant mechanisms at nanosecond laser excitation in solution and thin films. By virtue of the magnitude of absorption coefficients and other nonlinear optical parameters estimated in this work, sample 4 was found to exhibit strongest nonlinear optical properties followed by 3, while 2 is the weakest nonlinear absorber of the studied samples. Large third-order susceptibility (1.46 × 10−9 esu and 7.74 × 10−10 esu) and hyperpolarizability (2.13 × 10−28 and 8.37 × 10−29 esu) were estimated for 4-PBC and 3-PBC, respectively. Our studies show that these molecules are suitable candidates for practical passive optical limiters. , Original publication is available at http://dx.doi.org/10.1080/00958972.2015.1077237
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Date Issued: 2015

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Nonlinear optical properties of natural laccaic acid dye studied using Z-scan technique

- Zongo, S, Sanusi, Kayode, Britton, Jonathan, Mthunzi, P, Nyokong, Tebello, Maaza, M, Sahraoui, B

Authors: Zongo, S , Sanusi, Kayode , Britton, Jonathan , Mthunzi, P , Nyokong, Tebello , Maaza, M , Sahraoui, B
Date: 2015
Language: English
Type: Article
Identifier: vital:7261 , http://hdl.handle.net/10962/d1020270
Description: We have investigated the nonlinear optical properties, including the optical limiting behaviour for five different concentrations of laccaic acid dye in solution and a thin film obtained through doping in poly (methyl methacrylate) (PMMA) polymer. The experiments were performed by using single beam Z-scan technique at 532 nm with 10 ns, 10 Hz Nd:YAG laser pulses excitation. From the open-aperture Z-scan data, we derived that the laccaic dye samples exhibit strong two photon absorption (2PA). The nonlinear refractive index was determined through the closed aperture Z-scan data. The estimated absorption coefficient β2, nonlinear refractive index n2 and second order hyperpolarizability γ were found to be of the order of 10−10 m/W, 10−9 esu and 10−32 esu, respectively. The Z-scan study reveals that the natural laccaic acid dye emerges as a promising material for third order nonlinear optical devices application. , Original publication is available at http://dx.doi.org/10.1016/j.optmat.2015.04.031
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Date Issued: 2015

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Nonlinear optical response of tetra and mono substituted zinc phthalocyanine complexes

- Fashina, Adedayo, Nyokong, Tebello

Authors: Fashina, Adedayo , Nyokong, Tebello
Date: 2015
Language: English
Type: Article
Identifier: vital:7281 , http://hdl.handle.net/10962/d1020318 , Original publication is available at http://dx.doi.org/10.1016/j.jlumin.2015.06.003
Description: The nonlinear absorption properties of 6 mono-substituted and 3 symmetric zinc phthalocyanine complexes have been studied in dimethylsulfoxide (DMSO) using 10 ns pulses at 532 nm. The non linear absorption of the complexes has been studied using the Z-scan technique. The study showed that both the singlet and triplet excited states contribute to the non linear absorption behavior. The nonlinear third-order susceptibility and second-order hyperpolarizability values of the complexes are reported. It was observed that two of the symmetric phthalocyanine complexes (5-α substituted with aminophenoxy and 9-β substituted with carboxyphenoxy) showed better and promising optical nonlinearity when compared to the other complexes studied.
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Date Issued: 2015

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Optical limiting and singlet oxygen generation properties of phosphorus triazatetrabenzcorroles

- Mkhize, Colin, Britton, Jonathan, Mack, John, Nyokong, Tebello

Authors: Mkhize, Colin , Britton, Jonathan , Mack, John , Nyokong, Tebello
Date: 2015
Language: English
Type: Article
Identifier: vital:7257 , http://hdl.handle.net/10962/d1020266
Description: Novel phosphorus triazatetrabenzcorrole (TBC) tetrasubstituted at the α- and β-positions of the peripheral fused benzene rings with t-butylphenoxy substituents have been prepared and characterized. The effect of the substituents on the electronic structures and optical properties is investigated with TD-DFT calculations and MCD spectroscopy. The optical limiting properties have been investigated to examine whether the lower symmetry that results from the direct pyrrole–pyrrole bond and hence the permanent dipole moment that is introduced result in higher safety thresholds, relative to the values that have been reported for phthalocyanines. The suitability of the compounds for singlet oxygen applications has also been examined. , Original publication is available at http://dx.doi.org/10.1142/S1088424614501065
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Date Issued: 2015

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