Protea lepidocarpodendron
- Authors: Skead, C J (Cuthbert John)
- Date: 19uu
- Subjects: Protea lepidocarpodendron -- South Africa -- Photographs , Proteaceae -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/75327 , vital:30404
- Description: Caption: "Protea lepidocarpodendron. Right hand peg shows where Orange-breasted Sunbird inserts beak. Other show where Promerops insert bill."
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 19uu
- Subjects: Protea lepidocarpodendron -- South Africa -- Photographs , Proteaceae -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/75327 , vital:30404
- Description: Caption: "Protea lepidocarpodendron. Right hand peg shows where Orange-breasted Sunbird inserts beak. Other show where Promerops insert bill."
- Full Text: false
South Asian diasporic women's short fiction: the South African contribution
- Authors: Naidu, Samantha
- Date: 2007
- Language: English
- Type: Article , text
- Identifier: vital:26376 , http://hdl.handle.net/10962/54037 , https://orcid.org/0000-0001-9456-8657
- Description: Although Indian Women S Short Fiction Has Always Enjoyed Equal Importance And Popularity As Their Novels, Very Little Critical Attention Has Been Paid To It So Far. Indian Women S Short Fiction Seeks To Fulfil This Long Felt Need. It Puts Together Fifteen Perceptive And Analytical Articles By Scholars Across The World. The Articles, Which Are Focussed On Native Indian Writing As Well As Diasporic Short Fiction, Deal With Such Interesting Literary Issues As Construction Of Femininity, Disablement And Enablement, Bengali Heritage, Hybrid Identities, Nostalgia, Representation Of The Partition Violence, Tradition And Modernity, And Cultural Perspectivism.
- Full Text: false
- Authors: Naidu, Samantha
- Date: 2007
- Language: English
- Type: Article , text
- Identifier: vital:26376 , http://hdl.handle.net/10962/54037 , https://orcid.org/0000-0001-9456-8657
- Description: Although Indian Women S Short Fiction Has Always Enjoyed Equal Importance And Popularity As Their Novels, Very Little Critical Attention Has Been Paid To It So Far. Indian Women S Short Fiction Seeks To Fulfil This Long Felt Need. It Puts Together Fifteen Perceptive And Analytical Articles By Scholars Across The World. The Articles, Which Are Focussed On Native Indian Writing As Well As Diasporic Short Fiction, Deal With Such Interesting Literary Issues As Construction Of Femininity, Disablement And Enablement, Bengali Heritage, Hybrid Identities, Nostalgia, Representation Of The Partition Violence, Tradition And Modernity, And Cultural Perspectivism.
- Full Text: false
LCT in mixed-methods research: evolving an instrument for quantitative data
- Maton, Karl, Howard, Sarah Katherine
- Authors: Maton, Karl , Howard, Sarah Katherine
- Date: 2016
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/66479 , vital:28954
- Description: publisher version , A mantra of social science declares a fundamental divide between the quantitative and the qualitative that involves more than methods. According to this depiction, the two methodologies are intrinsically associated with a range of ontological, epistemological, political and moral stances. Each of these constellations of stances is strongly integrated, such that choice of method is held to involve a series of associated choices. Each constellation is also strongly opposed to the other, along axes labelled positivism/constructivism, scientism/humanism, conservative/critical, old/new, among others. These ‘binary constellations’ (Maton 2014b: 148-70) offer a forced choice between two tightly-knit sets of practices that are portrayed as jointly exhaustive and mutually exclusive. So widespread is this methodological binarism that many scholars ‘are left with the impression that they have to pledge allegiance to one research school of thought or the other’ (Johnson and Onwuegbuzie 2004: 14). A competing mantra disclaims this divide. Distinctions underpinning the picture of binary constellations have been regularly dissolved. Arguments that one deals with numbers, the other with words, one studies behaviour, the other reveals meanings, one is hypothetico-deductive, the other inductive, one enables generalization, the other explores singular depth, among others, have been repeatedly undermined (e.g. Hammersley 1992). Indeed, the death of the divide is frequently declared. Calls for ‘transcending’ (Salomon 1991) or ‘getting over’ (Howe 1992) the quantitative-qualitative debate and arguments for mixed-methods research (Brannen 2005; Johnson and Onwuegbuzie 2004) are recurrent. These calls highlight how the methodologies offer complementary insights for research and demonstrate that eschewing either methodology on principle is unnecessarily renouncing potential explanatory power. However, the call to mixed-methods research remains more breached than honoured. Methodological monotheism remains dominant – studies of education and society typically adopt either quantitative or qualitative methods. As we shall discuss, the former is typically associated with the influence of psychology and the latter is often claimed as emblematic of sociology. Studies utilizing the sociological frameworks on which Legitimation Code Theory (LCT) builds have echoed this pattern by overwhelmingly adopting qualitative methods. Accordingly, Part I of this volume begins by exploring how LCT concepts can be enacted in qualitative research (Chapter 2). However, LCT is not limited to one methodology and a growing body of mixed-methods research is engaging with both qualitative and quantitative data. In this chapter we illustrate how this research works and the gains it offers. For resolutely qualitative researchers, the prospect of reading anything quantitative, even in mixed-methods research, may be unenticing. However, it would be a mistake to pass over this chapter, for several reasons. First, we offer insights into research practice that might surprise such scholars. As Bourdieu argued, ‘methodological indictments are too often no more than a disguised way of making a virtue out of necessity, of feigning to dismiss, to ignore in an active way, what one is ignorant of in fact’ (Bourdieu and Wacquant 1992: 226). Our aim is to contribute towards removing this reason for one-sidedness. We show, for example, how quantitative methods confound their common portrayal as neat, straightforward and procedural; they are complex and involved and require craft work and judgement. Our focus is, therefore, more practical than metaphysical. We shall not enter seemingly endless debates over whether the ‘quantitative-qualitative divide’ refers to paradigms, epistemologies or methods and whether these are complementary or incommensurable. Rather, we discuss the development of an instrument for enacting LCT concepts in quantitative methods and ground this account in real examples of mixed-methods research. Specifically, we trace the evolution of an instrument for embedding specialization codes within questionnaires through its creation for research into school music and then its development within studies of educational technology. Given that mathematics can be off-putting to the noviciate, we minimize discussion of statistics and explain measures in lay terms. Second, this is much more than a story of quantitative methods. The evolution of the instrument both shaped qualitative methods and was shaped by the data they generated, offering insights into how qualitative research can more fully engage with LCT. Its development also involved intimate dialogue with theory that shed fresh light on LCT itself, making explicit the ‘gaze’ embodied by the framework (Chapter 1, this volume). We shall highlight wider lessons learned about the craft of enacting LCT in research, lessons of direct relevance for studies using any methods. Third, we shall illustrate the explanatory power offered by using quantitative and qualitative methods together, such as providing a robust basis for detailed findings, identifying wider-scale trends typically inaccessible to qualitative methods that provide a context for their data, and facilitating knowledge-building through greater replicability across contexts and over time. For example, the technology studies built directly on the music studies to cumulatively develop the instrument and generated probably the largest data set in code sociology: 97,386 responses (83,937 student and 13,449 staff surveys) on the organizing principles of academic subjects, alongside 20 in-depth qualitative case studies of secondary schools. This offers a foundation of substantial breadth and depth for making claims about knowledge practices across the disciplinary map and a firm basis on which future research into disciplinary differences can build. Moreover, the quantitative instrument itself can be adopted or adapted in new studies, further enabling cumulative knowledge-building. Given these substantive, methodological and theoretical gains, it is perhaps surprising there exists any temptation to skip past discussion of mixed-methods research. This reflects the methodological character of the fields in which LCT emerged. We thus begin by briefly illustrating how the sociological frameworks on which the theory builds have become distanced from quantitative methods.
- Full Text: false
- Authors: Maton, Karl , Howard, Sarah Katherine
- Date: 2016
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/66479 , vital:28954
- Description: publisher version , A mantra of social science declares a fundamental divide between the quantitative and the qualitative that involves more than methods. According to this depiction, the two methodologies are intrinsically associated with a range of ontological, epistemological, political and moral stances. Each of these constellations of stances is strongly integrated, such that choice of method is held to involve a series of associated choices. Each constellation is also strongly opposed to the other, along axes labelled positivism/constructivism, scientism/humanism, conservative/critical, old/new, among others. These ‘binary constellations’ (Maton 2014b: 148-70) offer a forced choice between two tightly-knit sets of practices that are portrayed as jointly exhaustive and mutually exclusive. So widespread is this methodological binarism that many scholars ‘are left with the impression that they have to pledge allegiance to one research school of thought or the other’ (Johnson and Onwuegbuzie 2004: 14). A competing mantra disclaims this divide. Distinctions underpinning the picture of binary constellations have been regularly dissolved. Arguments that one deals with numbers, the other with words, one studies behaviour, the other reveals meanings, one is hypothetico-deductive, the other inductive, one enables generalization, the other explores singular depth, among others, have been repeatedly undermined (e.g. Hammersley 1992). Indeed, the death of the divide is frequently declared. Calls for ‘transcending’ (Salomon 1991) or ‘getting over’ (Howe 1992) the quantitative-qualitative debate and arguments for mixed-methods research (Brannen 2005; Johnson and Onwuegbuzie 2004) are recurrent. These calls highlight how the methodologies offer complementary insights for research and demonstrate that eschewing either methodology on principle is unnecessarily renouncing potential explanatory power. However, the call to mixed-methods research remains more breached than honoured. Methodological monotheism remains dominant – studies of education and society typically adopt either quantitative or qualitative methods. As we shall discuss, the former is typically associated with the influence of psychology and the latter is often claimed as emblematic of sociology. Studies utilizing the sociological frameworks on which Legitimation Code Theory (LCT) builds have echoed this pattern by overwhelmingly adopting qualitative methods. Accordingly, Part I of this volume begins by exploring how LCT concepts can be enacted in qualitative research (Chapter 2). However, LCT is not limited to one methodology and a growing body of mixed-methods research is engaging with both qualitative and quantitative data. In this chapter we illustrate how this research works and the gains it offers. For resolutely qualitative researchers, the prospect of reading anything quantitative, even in mixed-methods research, may be unenticing. However, it would be a mistake to pass over this chapter, for several reasons. First, we offer insights into research practice that might surprise such scholars. As Bourdieu argued, ‘methodological indictments are too often no more than a disguised way of making a virtue out of necessity, of feigning to dismiss, to ignore in an active way, what one is ignorant of in fact’ (Bourdieu and Wacquant 1992: 226). Our aim is to contribute towards removing this reason for one-sidedness. We show, for example, how quantitative methods confound their common portrayal as neat, straightforward and procedural; they are complex and involved and require craft work and judgement. Our focus is, therefore, more practical than metaphysical. We shall not enter seemingly endless debates over whether the ‘quantitative-qualitative divide’ refers to paradigms, epistemologies or methods and whether these are complementary or incommensurable. Rather, we discuss the development of an instrument for enacting LCT concepts in quantitative methods and ground this account in real examples of mixed-methods research. Specifically, we trace the evolution of an instrument for embedding specialization codes within questionnaires through its creation for research into school music and then its development within studies of educational technology. Given that mathematics can be off-putting to the noviciate, we minimize discussion of statistics and explain measures in lay terms. Second, this is much more than a story of quantitative methods. The evolution of the instrument both shaped qualitative methods and was shaped by the data they generated, offering insights into how qualitative research can more fully engage with LCT. Its development also involved intimate dialogue with theory that shed fresh light on LCT itself, making explicit the ‘gaze’ embodied by the framework (Chapter 1, this volume). We shall highlight wider lessons learned about the craft of enacting LCT in research, lessons of direct relevance for studies using any methods. Third, we shall illustrate the explanatory power offered by using quantitative and qualitative methods together, such as providing a robust basis for detailed findings, identifying wider-scale trends typically inaccessible to qualitative methods that provide a context for their data, and facilitating knowledge-building through greater replicability across contexts and over time. For example, the technology studies built directly on the music studies to cumulatively develop the instrument and generated probably the largest data set in code sociology: 97,386 responses (83,937 student and 13,449 staff surveys) on the organizing principles of academic subjects, alongside 20 in-depth qualitative case studies of secondary schools. This offers a foundation of substantial breadth and depth for making claims about knowledge practices across the disciplinary map and a firm basis on which future research into disciplinary differences can build. Moreover, the quantitative instrument itself can be adopted or adapted in new studies, further enabling cumulative knowledge-building. Given these substantive, methodological and theoretical gains, it is perhaps surprising there exists any temptation to skip past discussion of mixed-methods research. This reflects the methodological character of the fields in which LCT emerged. We thus begin by briefly illustrating how the sociological frameworks on which the theory builds have become distanced from quantitative methods.
- Full Text: false
A survey of South African crime fiction : critical analysis and publishing history
- Authors: Naidu, Samantha
- Date: 2017
- Language: English
- Type: Book , text
- Identifier: vital:26344 , http://hdl.handle.net/10962/53878 , https://www.isbs.com/products/9781869143558 , https://orcid.org/0000-0001-9456-8657
- Description: Is crime fiction the new 'political novel' in South Africa? Why did the apartheid censors disapprove of crime fiction more than any other genre? Crime fiction continues to be a burgeoning literary category in post-apartheid South Africa, with more new authors, titles and themes emerging every year. This book is the first comprehensive survey of South African crime fiction. It provides an overview of this phenomenally successful literary category, and places it within its wider social and historical context. The authors specialise in both literary studies and print culture, and this combination informs a critical analysis and publishing history of South African crime fiction from the nineteenth century to the present day. The book provides a literary lineage while considering different genres and sub-genres, as well as specific themes such as gender and eco-criticism. The inclusion of a detailed bibliography of crime fiction since the 1890s makes A Survey of South African Crime Fiction an indispensable teaching and study aid
- Full Text: false
- Authors: Naidu, Samantha
- Date: 2017
- Language: English
- Type: Book , text
- Identifier: vital:26344 , http://hdl.handle.net/10962/53878 , https://www.isbs.com/products/9781869143558 , https://orcid.org/0000-0001-9456-8657
- Description: Is crime fiction the new 'political novel' in South Africa? Why did the apartheid censors disapprove of crime fiction more than any other genre? Crime fiction continues to be a burgeoning literary category in post-apartheid South Africa, with more new authors, titles and themes emerging every year. This book is the first comprehensive survey of South African crime fiction. It provides an overview of this phenomenally successful literary category, and places it within its wider social and historical context. The authors specialise in both literary studies and print culture, and this combination informs a critical analysis and publishing history of South African crime fiction from the nineteenth century to the present day. The book provides a literary lineage while considering different genres and sub-genres, as well as specific themes such as gender and eco-criticism. The inclusion of a detailed bibliography of crime fiction since the 1890s makes A Survey of South African Crime Fiction an indispensable teaching and study aid
- Full Text: false
Debating about power
- Authors: Thomas, Cornelius
- Date: 2015
- Type: Image
- Identifier: vital:8049 , http://hdl.handle.net/10962/d1020545
- Description: On Wednesday, 21 October 2015, Rhodes University closed in solidarity with the higher education sector as students and staff embarked on nationwide protest action against the shortage of funding in the South African higher education sector. #FeesMustFall is a national student led protest movement that began in mid-October 2015 in response to proposed increases in fees at South African universities. These images depict the peaceful march and illustrate the extent of solidarity among staff, students and community members who joined in support of the protest.
- Full Text: false
- Authors: Thomas, Cornelius
- Date: 2015
- Type: Image
- Identifier: vital:8049 , http://hdl.handle.net/10962/d1020545
- Description: On Wednesday, 21 October 2015, Rhodes University closed in solidarity with the higher education sector as students and staff embarked on nationwide protest action against the shortage of funding in the South African higher education sector. #FeesMustFall is a national student led protest movement that began in mid-October 2015 in response to proposed increases in fees at South African universities. These images depict the peaceful march and illustrate the extent of solidarity among staff, students and community members who joined in support of the protest.
- Full Text: false
Forest recession
- Authors: Skead, C J (Cuthbert John)
- Date: 1961-06
- Subjects: Trees -- South Africa -- Photographs , Deforestation -- South Africa , Tree ferns -- South Africa -- Photographs , Aloe arborescens -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/65527 , vital:28806
- Description: Caption "TW 10. Tree ferns (left) with Aloe arborescens in back to left, and natural forest at back. Ferns and aloes side by side where forest ought to be! June 1961.”
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 1961-06
- Subjects: Trees -- South Africa -- Photographs , Deforestation -- South Africa , Tree ferns -- South Africa -- Photographs , Aloe arborescens -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/65527 , vital:28806
- Description: Caption "TW 10. Tree ferns (left) with Aloe arborescens in back to left, and natural forest at back. Ferns and aloes side by side where forest ought to be! June 1961.”
- Full Text: false
Salix mucronata - Cape willow
- Authors: Skead, C J (Cuthbert John)
- Date: 1960-07-10
- Subjects: Salix mucronata- South Africa -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/118327 , vital:34621
- Description: Caption "Cape Willows in winter foliage. Line drift. Keiskamma River. 10-07-1960.”
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 1960-07-10
- Subjects: Salix mucronata- South Africa -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/118327 , vital:34621
- Description: Caption "Cape Willows in winter foliage. Line drift. Keiskamma River. 10-07-1960.”
- Full Text: false
Ptaeroxylon obliquum - Sneezewood
- Authors: Skead, C J (Cuthbert John)
- Date: 1958
- Subjects: Ptaeroxylon obliquum -- South Africa -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , notes
- Identifier: http://hdl.handle.net/10962/120321 , vital:34878
- Description: Caption "C. J. Skead's notes. Ptaeroxylon obliquum. 1958."
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 1958
- Subjects: Ptaeroxylon obliquum -- South Africa -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , notes
- Identifier: http://hdl.handle.net/10962/120321 , vital:34878
- Description: Caption "C. J. Skead's notes. Ptaeroxylon obliquum. 1958."
- Full Text: false
Leonotis leonurus flowers, King William's Town
- Authors: Skead, C J (Cuthbert John)
- Date: 1963-05
- Subjects: Leonotis leonurus -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/75540 , vital:30429
- Description: Caption: "Leonotis leonurus flowers, King Williams Town. May 1963."
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 1963-05
- Subjects: Leonotis leonurus -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/75540 , vital:30429
- Description: Caption: "Leonotis leonurus flowers, King Williams Town. May 1963."
- Full Text: false
Forest recession - Nqantos area, Upper Kubusie
- Authors: Skead, C J (Cuthbert John)
- Date: 1959
- Subjects: Nqantosi area, Upper Kubusie, Stutterheim (South Africa) -- Photographs , Trees -- South Africa -- Photographs , Deforestation -- South Africa -- Stutterheim -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/65750 , vital:28834
- Description: Caption "TW 2. Black Ironwood, left foreground left standing by receding forest at Nqantos area, Upper Kubusie, Stutterheim. 1959.”
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 1959
- Subjects: Nqantosi area, Upper Kubusie, Stutterheim (South Africa) -- Photographs , Trees -- South Africa -- Photographs , Deforestation -- South Africa -- Stutterheim -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/65750 , vital:28834
- Description: Caption "TW 2. Black Ironwood, left foreground left standing by receding forest at Nqantos area, Upper Kubusie, Stutterheim. 1959.”
- Full Text: false
Plant adaptation - Giants Castle Reserve
- Authors: Skead, C J (Cuthbert John)
- Date: 1956
- Subjects: Drakensberg (South Africa) -- Photographs , Giants Castle Reserve, Drakensberg (South Africa) -- Photographs , Skead, Christine -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/65791 , vital:28838
- Description: Caption: “Giants Castel reserve, Drakensberg. Vegetation growing on top of a large boulder. 1956. C. J. Skead. Christine Skead in picture.”
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 1956
- Subjects: Drakensberg (South Africa) -- Photographs , Giants Castle Reserve, Drakensberg (South Africa) -- Photographs , Skead, Christine -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/65791 , vital:28838
- Description: Caption: “Giants Castel reserve, Drakensberg. Vegetation growing on top of a large boulder. 1956. C. J. Skead. Christine Skead in picture.”
- Full Text: false
Thorn tree canopy - King Williams Town
- Authors: Skead, C J (Cuthbert John)
- Date: 1959
- Subjects: Acacia karroo -- South Africa -- King William's Town -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/72057 , vital:29992
- Description: Caption "Thorntree canopy. King Wms Town. 1959.”
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 1959
- Subjects: Acacia karroo -- South Africa -- King William's Town -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/72057 , vital:29992
- Description: Caption "Thorntree canopy. King Wms Town. 1959.”
- Full Text: false
Pinus radiata - Pinus insignis - Pine
- Authors: Skead, C J (Cuthbert John)
- Date: 19uu
- Subjects: Pinus radiata -- Pinus insignis -- South Africa -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/120962 , vital:34958
- Description: Caption "Arum in the forest stream."
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 19uu
- Subjects: Pinus radiata -- Pinus insignis -- South Africa -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/120962 , vital:34958
- Description: Caption "Arum in the forest stream."
- Full Text: false
Phototransferred thermoluminescence and thermally-assisted optically stimulated luminescence dosimetry using α-Al2O3:C,Mg annealed at 1200°C
- Kalita, Jitumani M, Chithambo, Makaiko L
- Authors: Kalita, Jitumani M , Chithambo, Makaiko L
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/105422 , vital:32511 , https://doi.org/10.1016/j.jlumin.2018.08.085
- Description: We report phototransferred thermoluminescence (PTTL) and thermally-assisted optically stimulated luminescence (TA-OSL) of α-Al2O3:C,Mg annealed at 1200 °C. PTTL is TL measured from an irradiated phosphor after its exposure to light. The other theme of this study, TA-OSL is the additional amount of luminescence optically stimulated from a sample over and above the amount that would be measured at room temperature. A sample irradiated to 10 Gy and preheated to 230 °C at 1 °C/s followed by illumination by 470 nm blue light produced four PTTL peaks at 53, 80, 102 and 173 °C. The PTTL peaks occur at the same positions as the corresponding conventional TL peaks. Their kinetic parameters are also similar. The intensity of the PTTL peaks increased with duration of illumination to a maximum within 200 s for doses between 1 Gy and 10 Gy. The dose response of each of the PTTL peaks at 80, 102 and 173 °C is linear within 1–15 Gy. The rate of fading is low and the peaks are reproducible. When the irradiated sample is optically stimulated at temperatures between 30 °C and 300 °C, after preheating to 500 °C, the intensity of its TA-OSL goes through a peak with temperature at 200 °C. Using the rising edge of the plot, activation energy of thermal assistance for a deep electron trap was estimated as (0.21 ± 0.02) eV. The TA-OSL dose response is sublinear from 10–250 Gy and saturates thereafter. The PTTL and TA-OSL analyses signify that the concentration of deep traps in α-Al2O3:C,Mg increased after annealing at 1200 °C. As a result, the sample produced better PTTL and TA-OSL response than when annealed at lower temperature.
- Full Text: false
- Authors: Kalita, Jitumani M , Chithambo, Makaiko L
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/105422 , vital:32511 , https://doi.org/10.1016/j.jlumin.2018.08.085
- Description: We report phototransferred thermoluminescence (PTTL) and thermally-assisted optically stimulated luminescence (TA-OSL) of α-Al2O3:C,Mg annealed at 1200 °C. PTTL is TL measured from an irradiated phosphor after its exposure to light. The other theme of this study, TA-OSL is the additional amount of luminescence optically stimulated from a sample over and above the amount that would be measured at room temperature. A sample irradiated to 10 Gy and preheated to 230 °C at 1 °C/s followed by illumination by 470 nm blue light produced four PTTL peaks at 53, 80, 102 and 173 °C. The PTTL peaks occur at the same positions as the corresponding conventional TL peaks. Their kinetic parameters are also similar. The intensity of the PTTL peaks increased with duration of illumination to a maximum within 200 s for doses between 1 Gy and 10 Gy. The dose response of each of the PTTL peaks at 80, 102 and 173 °C is linear within 1–15 Gy. The rate of fading is low and the peaks are reproducible. When the irradiated sample is optically stimulated at temperatures between 30 °C and 300 °C, after preheating to 500 °C, the intensity of its TA-OSL goes through a peak with temperature at 200 °C. Using the rising edge of the plot, activation energy of thermal assistance for a deep electron trap was estimated as (0.21 ± 0.02) eV. The TA-OSL dose response is sublinear from 10–250 Gy and saturates thereafter. The PTTL and TA-OSL analyses signify that the concentration of deep traps in α-Al2O3:C,Mg increased after annealing at 1200 °C. As a result, the sample produced better PTTL and TA-OSL response than when annealed at lower temperature.
- Full Text: false
Yellowwood
- Authors: Skead, C J (Cuthbert John)
- Date: 1959-10
- Subjects: Podocarpus falcatus -- South Africa -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/117286 , vital:34498
- Description: Caption "Upper bole. Hogsback. Oct. 1959.”
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 1959-10
- Subjects: Podocarpus falcatus -- South Africa -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/117286 , vital:34498
- Description: Caption "Upper bole. Hogsback. Oct. 1959.”
- Full Text: false
"Hey, class of '76 school is open"
- Authors: Thomas, Cornelius
- Date: 2015-10-21
- Type: Image
- Identifier: vital:7986 , http://hdl.handle.net/10962/d1020462
- Description: On Wednesday, 21 October 2015, Rhodes University closed in solidarity with the higher education sector as students and staff embarked on nationwide protest action against the shortage of funding in the South African higher education sector. #FeesMustFall is a national student led protest movement that began in mid-October 2015 in response to proposed increases in fees at South African universities. These images depict the peaceful march and illustrate the extent of solidarity among staff, students and community members who joined in support of the protest.
- Full Text: false
- Authors: Thomas, Cornelius
- Date: 2015-10-21
- Type: Image
- Identifier: vital:7986 , http://hdl.handle.net/10962/d1020462
- Description: On Wednesday, 21 October 2015, Rhodes University closed in solidarity with the higher education sector as students and staff embarked on nationwide protest action against the shortage of funding in the South African higher education sector. #FeesMustFall is a national student led protest movement that began in mid-October 2015 in response to proposed increases in fees at South African universities. These images depict the peaceful march and illustrate the extent of solidarity among staff, students and community members who joined in support of the protest.
- Full Text: false
Milkwood
- Authors: Skead, C J (Cuthbert John)
- Date: 1963-07-10
- Subjects: Sideroxylon inerme - South Africa -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , clippings
- Identifier: http://hdl.handle.net/10962/117954 , vital:34580
- Description: Caption "This battered milkwood, once much bigger, is Woodstock's Treaty Tree, under which, legend says, the 1806 armistice was signed between the British and the Dutch garrison. It is now to be protected by Cape Town municipality. E. P. Herald. 10-07-1963”
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 1963-07-10
- Subjects: Sideroxylon inerme - South Africa -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , clippings
- Identifier: http://hdl.handle.net/10962/117954 , vital:34580
- Description: Caption "This battered milkwood, once much bigger, is Woodstock's Treaty Tree, under which, legend says, the 1806 armistice was signed between the British and the Dutch garrison. It is now to be protected by Cape Town municipality. E. P. Herald. 10-07-1963”
- Full Text: false
Acacia Karoo - King Williams Town
- Authors: Skead, C J (Cuthbert John)
- Date: 1958-08
- Subjects: Acacia karroo -- South Africa -- King William's Town -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/72048 , vital:29991
- Description: Caption "Silhouette of Acacia Karoo on old golf course King Williams Town. Aug. 1958.”
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 1958-08
- Subjects: Acacia karroo -- South Africa -- King William's Town -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/72048 , vital:29991
- Description: Caption "Silhouette of Acacia Karoo on old golf course King Williams Town. Aug. 1958.”
- Full Text: false
Kaffir plum
- Authors: Skead, C J (Cuthbert John)
- Date: 19uu
- Subjects: Harpephyllum caffrum -- South Africa -- Photographs , Anacardiaceae -- South Africa -- Photographs , Meliaceae -- South Africa -- Photographs , Ekebergia capensis -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/111729 , vital:33499
- Description: Caption: "Comparison of Kaffir plum left) and Ekebergia capensis leaves and fruit."
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 19uu
- Subjects: Harpephyllum caffrum -- South Africa -- Photographs , Anacardiaceae -- South Africa -- Photographs , Meliaceae -- South Africa -- Photographs , Ekebergia capensis -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/111729 , vital:33499
- Description: Caption: "Comparison of Kaffir plum left) and Ekebergia capensis leaves and fruit."
- Full Text: false
Pinus radiata - Pinus insignis - Pine
- Authors: Skead, C J (Cuthbert John)
- Date: 19uu
- Subjects: Pinus radiata -- Pinus insignis -- South Africa -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/120992 , vital:34961
- Description: Caption "Hogsback. Outside the Hydro."
- Full Text: false
- Authors: Skead, C J (Cuthbert John)
- Date: 19uu
- Subjects: Pinus radiata -- Pinus insignis -- South Africa -- Photographs , Trees -- South Africa -- Photographs
- Language: English
- Type: mixed material , photographs , landscape photographs
- Identifier: http://hdl.handle.net/10962/120992 , vital:34961
- Description: Caption "Hogsback. Outside the Hydro."
- Full Text: false