Uphengululo lobunzululwazi-lwimi ngokweembono zale mihla kuhlalutyo ngokwesithako sosetyenziso-lwimi Bunzululwazi sakhono kuxatyangelwa ngeengcingampefumlelwano Zika-Karl Marx
- Authors: Tsako, Mbuzeli Betroot
- Date: 2017
- Subjects: Marx, Karl, -- 1818-1883 , Xhosa literature -- History and criticism Linguistics -- Research Language and languages -- Philosophy
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/21406 , vital:29512
- Description: Olu phando lujolise ekudandalaziseni ingcingane ka-Karl Marx ebizwa ngokuba yi-Marxism, nasekubetheleleni ingcamango yokuba amagama, imixholo nemiqondiso eyalekeneyo, oko kubangela ukuba iteksi ebhaliweyo ingabinantsingiselo inye ekunokuthiwa yeyona ichanekileyo. Luza kwenziwa kuqanyelwe ngale ngcingane ye-Marxism ukubhentsisa le mixholo, imiqondiso, nemixholwana neentsingiselo eziqulethwe yiyo. Uphando olu luza kwenziwa kwinoveli ezimbini ezichongiweyo zikaSaule ezizezi: Ukhozi Olumaphiko, no- Umlimandlela. Akuzi kuthelekiswa ntoni kwezi noveli koko kuza kuqwalaselwa ubuchule bombhali kuchongo magama nemiqondiso, nase kuwasebenziseni ngobuchule ukubhentsisa iintsingiselo, imixholo nemixholwana eyahlukeneyo. Umba wale mixholo, iintsingiselo awuzi kuphononongwa uwodwa koko kuza kuxoxwa ngawo uzalanisa amasolotya oncawadi anje ngophuhliso-zimo zabalinganiswa; impixano; ukudalwa koxhalabiso; ukulobolelana kwemixholo nemixholwana; intshukumo; ingxoxo; isantya; ubuzaza besimo sentlalo kwakunye nonikano-sithuba lweziganeko. Isiphumo solu phando siza kuba kukungqinelana kwemixholo nemixholwana, neentsingiselo eziqulethwe zezi noveli nale ngcingane ka- Karl Marx.
- Full Text:
- Date Issued: 2017
- Authors: Tsako, Mbuzeli Betroot
- Date: 2017
- Subjects: Marx, Karl, -- 1818-1883 , Xhosa literature -- History and criticism Linguistics -- Research Language and languages -- Philosophy
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/21406 , vital:29512
- Description: Olu phando lujolise ekudandalaziseni ingcingane ka-Karl Marx ebizwa ngokuba yi-Marxism, nasekubetheleleni ingcamango yokuba amagama, imixholo nemiqondiso eyalekeneyo, oko kubangela ukuba iteksi ebhaliweyo ingabinantsingiselo inye ekunokuthiwa yeyona ichanekileyo. Luza kwenziwa kuqanyelwe ngale ngcingane ye-Marxism ukubhentsisa le mixholo, imiqondiso, nemixholwana neentsingiselo eziqulethwe yiyo. Uphando olu luza kwenziwa kwinoveli ezimbini ezichongiweyo zikaSaule ezizezi: Ukhozi Olumaphiko, no- Umlimandlela. Akuzi kuthelekiswa ntoni kwezi noveli koko kuza kuqwalaselwa ubuchule bombhali kuchongo magama nemiqondiso, nase kuwasebenziseni ngobuchule ukubhentsisa iintsingiselo, imixholo nemixholwana eyahlukeneyo. Umba wale mixholo, iintsingiselo awuzi kuphononongwa uwodwa koko kuza kuxoxwa ngawo uzalanisa amasolotya oncawadi anje ngophuhliso-zimo zabalinganiswa; impixano; ukudalwa koxhalabiso; ukulobolelana kwemixholo nemixholwana; intshukumo; ingxoxo; isantya; ubuzaza besimo sentlalo kwakunye nonikano-sithuba lweziganeko. Isiphumo solu phando siza kuba kukungqinelana kwemixholo nemixholwana, neentsingiselo eziqulethwe zezi noveli nale ngcingane ka- Karl Marx.
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- Date Issued: 2017
Uphononongo lwesimo sabalinganiswa ngokwepragmatiki kwiincwadi ezikhethiweyo zesiXhosa
- Msizi, Nontsikelelo Jeanette
- Authors: Msizi, Nontsikelelo Jeanette
- Date: 2017
- Subjects: Xhosa literature Pragmatics , Characters and characteristics in literature
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/19641 , vital:28921
- Description: Lo msebenzi uza kujonga unxibelelwano oluthi lwenzeke phakathi kwabalinganiswa abakwiincwadi zesixhosa kusetyenziswa ithiyori yonxibelelwano kujongwe ekubonisweni isimo sabalinganiswa ngokwepragmatiki kwincwadi ezimbini zesixhosa, u"Ndixoleleni" ebhalwe ngu W.N Mbovane kwakunye nethi "Buzani kuBawo" ebhalwe ngu W.K Tamsanqa. Kukholeleka ukuba amaxesha amaninzi abantu abathetha ulwimi olunye bayakwazi ukunxibelelana kodwa bangavani ngenxa yokutyeba kwentsingiselo yentetha. Ipragmatiki yona ithi ijonge umgaqo wolwimi kwindlela abathethi bolwimi abaphumeza ngayo iincoko zabo ukuze zibe nentsingiselo efanekileyo neyamkelekileyo kubo. Unxibelelwano ludlala indima ebalulekileyo kwizinto esizenzayo nasekuziphatheni kwethu kuba ubani angaziphatha ngokwendlela axelelwa ngayo okanye ayibone komnye umntu. Ingcangane yonxibelelwano ijonge nendlela ethi umyalezo, namazwi omntu athi aveze intsingiselo xa kuthethwa ngabantu. le ngcingane ikwasebenzisa iimpawu nentsingiselo uykugqithisa umyalezo.
- Full Text:
- Date Issued: 2017
- Authors: Msizi, Nontsikelelo Jeanette
- Date: 2017
- Subjects: Xhosa literature Pragmatics , Characters and characteristics in literature
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/19641 , vital:28921
- Description: Lo msebenzi uza kujonga unxibelelwano oluthi lwenzeke phakathi kwabalinganiswa abakwiincwadi zesixhosa kusetyenziswa ithiyori yonxibelelwano kujongwe ekubonisweni isimo sabalinganiswa ngokwepragmatiki kwincwadi ezimbini zesixhosa, u"Ndixoleleni" ebhalwe ngu W.N Mbovane kwakunye nethi "Buzani kuBawo" ebhalwe ngu W.K Tamsanqa. Kukholeleka ukuba amaxesha amaninzi abantu abathetha ulwimi olunye bayakwazi ukunxibelelana kodwa bangavani ngenxa yokutyeba kwentsingiselo yentetha. Ipragmatiki yona ithi ijonge umgaqo wolwimi kwindlela abathethi bolwimi abaphumeza ngayo iincoko zabo ukuze zibe nentsingiselo efanekileyo neyamkelekileyo kubo. Unxibelelwano ludlala indima ebalulekileyo kwizinto esizenzayo nasekuziphatheni kwethu kuba ubani angaziphatha ngokwendlela axelelwa ngayo okanye ayibone komnye umntu. Ingcangane yonxibelelwano ijonge nendlela ethi umyalezo, namazwi omntu athi aveze intsingiselo xa kuthethwa ngabantu. le ngcingane ikwasebenzisa iimpawu nentsingiselo uykugqithisa umyalezo.
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- Date Issued: 2017
Uphononongo ngokobunzululwazi bume-ntlalo befuthe lasentshona kule mihla kwiincwadi zedrama: ekaqangule esihloko sithi “amaza” nekatamsanqa ethi “buzani kubawo.”
- Authors: Somkebe, Pindo Cynthia
- Date: 2017
- Subjects: Xhosa drama -- Criticism and interpretation Xhosa literature
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/20844 , vital:29406
- Description: Umba wokuguquka kwamaxesha nefuthe laseNtshona kudale uqhankqalazo, ungquzulwano novukelwano oludale unxunguphalo phakathi komzali nomntwana wakhe. Olu phando lugxile kakhulu kwincwadi kaTamsanqa ethi ‘Buzani kubawo’ nekaQangule ethi ‘Amaza’. Kuyafumaniseka ukuba ungquzulwano kwezi Drama zimbini lwenziwe kukudibana kwenkcubeko yaseNtshona neyemveli, zangquzulana. Abalinganiswa bamacala omabini baye banezinye iingqondo ezingahambelaniyo nelinye icala. Abalinganiswa abaziintloko bezi Drama zombini (ulutsha) bakholelwa kwinkcubeko yaseNtshona, babe abazali babo bona bekholelwa kwinkcubeko yemveli. Naxa abantu benkcubeko yemveli babeqhubeka nenkcubeko yabo yemveli, babengayithandi inkcubeko yaseNtshona eyamkelwe ngabantwana babo, ebenza ukuba bayijongele phantsi inkcubeko yabo yemveli. Apha ndizama ukuveza ukuguquka kwamaxesha ngenxa yefuthe laseNtshona okudale uqhankqalazo, ungquzulwano novukelwano phakathi komzali nomntwana nendlela oku kudala ngayo iyantlukwano ekuhlaleni naphakathi kwesizwe siphela. Oku kuza kwenziwa ngokuthi kuphononongwe nzulu ezi ncwadi zimbini zeDrama nendlela aba babhali abawudalance ngayo lo mcimbi wolu qhankqalazo. Ezinye izinto endiza kuziveza ziindlela zokuthetha ezithi zisetyenziswe ngabalinganiswa. Oku kwenziwa ngokuthi kugxeleshwe kakhulu kumagama nesigama esisetyenziswe ngaba babhali ukuzama ukuphuhlisa umxholo wabo. Unobangela wolu ngquzulwano kukuba abantu abadala abakholelwa kwinkcubeko yemveli bafuna ukuqweqwedisa abantwana abakholelwa kwinkcubeko yaseNtshona ukuba mabatshate ngenkani nabantu abangabathandiyo, nto leyo edale isiphelo esingekho sihle nokuphalala kwegazi kwezi Drama zimbini. Ngokuthe ngqo, ngokokucinga kwam, inkcubeko yaseAfrika ibonakala ikhuthaza ukuba ootata babenamalungelo angentla kwawoomama abashiyeka bona becinezelekile. Intwazana enguThobeka kuBuzani kubawo noNamhla kuAmaza bavezwe njengamaxhoba engcinezelo yamadoda xa bezibona sele begaxeleka emitshatweni namadoda abangawathandiyo. UThobeka utshatiswa noGugulethu angamaziyo ngenkani kuBuzani kubawo kanti uNamhla yena utshatiswa noSidima angamfuniyo, yena ezifunela uLizo wakhe kuAmaza. UThobeka uzibona ethobela abazali bakhe ngokuhamba aye eMthatha kuGugulethu ongamfuniyo kanti uyokuzibulalisa ngale ndoda kunye nabantwana athi ngabakhe. UNamhla kwelinye icala uthandana noLizo amthandayo ngoku angumfazi kaSidima, utshata noSidima ngomsesane abesele ewunikwe nguLizo. Unesibindi sokungenisa uLizo entangeni engekatshati kanti nangoku sele etshatile akayekanga ukungenisa uLizo apha kwaSidima. Apha ndiza kuveza uluvo lweengcali malunga neenkcubeko ezahlukileyo, unobangela wolu ngquzulwano neendlela ezinokwenziwa ukuthintela oku kungquzulana kule mihla siphila kuyo. Ukuqukumbela, isiphelo esibi sabalinganiswa senziwe kukunganyamezelani kwabantu abadala nabantwana benyanzelwa ngenkcubeko yemveli abangayifuniyo. Kuyinyaniso kona ukuba ngenxa yeenguqulelo ezininzi ezenzekileyo kweli, nezithe zalitshintsha ngokupheleleyo eli lizwe, uphando olutsha ngale miba lunganegalelo elikhulu. Ngoko ke, esi sifundo sigxile ekuphandeni nzulu ngendlela ephuhliswe ngayo le miba kwezi ncwadi zeDrama zimbini. Ababhali beethiyori ezahlukileyo ezisetyenziswe ekuhlalutyeni kolu phando benze kwakwazeka ukuchaza ngale miba yongquzulwano ngokunxulumene noncwadi. Inkcubeko ibonakala ingunozala nonobangela wendlela ubuni nongquzulwano obuthatyathwa ngayo ngabantu kwiintlanga zonke.
- Full Text:
- Date Issued: 2017
- Authors: Somkebe, Pindo Cynthia
- Date: 2017
- Subjects: Xhosa drama -- Criticism and interpretation Xhosa literature
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/20844 , vital:29406
- Description: Umba wokuguquka kwamaxesha nefuthe laseNtshona kudale uqhankqalazo, ungquzulwano novukelwano oludale unxunguphalo phakathi komzali nomntwana wakhe. Olu phando lugxile kakhulu kwincwadi kaTamsanqa ethi ‘Buzani kubawo’ nekaQangule ethi ‘Amaza’. Kuyafumaniseka ukuba ungquzulwano kwezi Drama zimbini lwenziwe kukudibana kwenkcubeko yaseNtshona neyemveli, zangquzulana. Abalinganiswa bamacala omabini baye banezinye iingqondo ezingahambelaniyo nelinye icala. Abalinganiswa abaziintloko bezi Drama zombini (ulutsha) bakholelwa kwinkcubeko yaseNtshona, babe abazali babo bona bekholelwa kwinkcubeko yemveli. Naxa abantu benkcubeko yemveli babeqhubeka nenkcubeko yabo yemveli, babengayithandi inkcubeko yaseNtshona eyamkelwe ngabantwana babo, ebenza ukuba bayijongele phantsi inkcubeko yabo yemveli. Apha ndizama ukuveza ukuguquka kwamaxesha ngenxa yefuthe laseNtshona okudale uqhankqalazo, ungquzulwano novukelwano phakathi komzali nomntwana nendlela oku kudala ngayo iyantlukwano ekuhlaleni naphakathi kwesizwe siphela. Oku kuza kwenziwa ngokuthi kuphononongwe nzulu ezi ncwadi zimbini zeDrama nendlela aba babhali abawudalance ngayo lo mcimbi wolu qhankqalazo. Ezinye izinto endiza kuziveza ziindlela zokuthetha ezithi zisetyenziswe ngabalinganiswa. Oku kwenziwa ngokuthi kugxeleshwe kakhulu kumagama nesigama esisetyenziswe ngaba babhali ukuzama ukuphuhlisa umxholo wabo. Unobangela wolu ngquzulwano kukuba abantu abadala abakholelwa kwinkcubeko yemveli bafuna ukuqweqwedisa abantwana abakholelwa kwinkcubeko yaseNtshona ukuba mabatshate ngenkani nabantu abangabathandiyo, nto leyo edale isiphelo esingekho sihle nokuphalala kwegazi kwezi Drama zimbini. Ngokuthe ngqo, ngokokucinga kwam, inkcubeko yaseAfrika ibonakala ikhuthaza ukuba ootata babenamalungelo angentla kwawoomama abashiyeka bona becinezelekile. Intwazana enguThobeka kuBuzani kubawo noNamhla kuAmaza bavezwe njengamaxhoba engcinezelo yamadoda xa bezibona sele begaxeleka emitshatweni namadoda abangawathandiyo. UThobeka utshatiswa noGugulethu angamaziyo ngenkani kuBuzani kubawo kanti uNamhla yena utshatiswa noSidima angamfuniyo, yena ezifunela uLizo wakhe kuAmaza. UThobeka uzibona ethobela abazali bakhe ngokuhamba aye eMthatha kuGugulethu ongamfuniyo kanti uyokuzibulalisa ngale ndoda kunye nabantwana athi ngabakhe. UNamhla kwelinye icala uthandana noLizo amthandayo ngoku angumfazi kaSidima, utshata noSidima ngomsesane abesele ewunikwe nguLizo. Unesibindi sokungenisa uLizo entangeni engekatshati kanti nangoku sele etshatile akayekanga ukungenisa uLizo apha kwaSidima. Apha ndiza kuveza uluvo lweengcali malunga neenkcubeko ezahlukileyo, unobangela wolu ngquzulwano neendlela ezinokwenziwa ukuthintela oku kungquzulana kule mihla siphila kuyo. Ukuqukumbela, isiphelo esibi sabalinganiswa senziwe kukunganyamezelani kwabantu abadala nabantwana benyanzelwa ngenkcubeko yemveli abangayifuniyo. Kuyinyaniso kona ukuba ngenxa yeenguqulelo ezininzi ezenzekileyo kweli, nezithe zalitshintsha ngokupheleleyo eli lizwe, uphando olutsha ngale miba lunganegalelo elikhulu. Ngoko ke, esi sifundo sigxile ekuphandeni nzulu ngendlela ephuhliswe ngayo le miba kwezi ncwadi zeDrama zimbini. Ababhali beethiyori ezahlukileyo ezisetyenziswe ekuhlalutyeni kolu phando benze kwakwazeka ukuchaza ngale miba yongquzulwano ngokunxulumene noncwadi. Inkcubeko ibonakala ingunozala nonobangela wendlela ubuni nongquzulwano obuthatyathwa ngayo ngabantu kwiintlanga zonke.
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- Date Issued: 2017
Uphononongo nzulu lokusetyenziswa kweenkumbulo nokulibala ngabalinganiswa kwiincwadi ezikhethiweyo zesiXhosa
- Authors: Notshe, Lwandlekazi
- Date: 2017
- Subjects: Xhosa literature Xhosa drama -- Criticism and interpretation
- Language: English
- Type: Thesis , Doctoral , MBA
- Identifier: http://hdl.handle.net/10948/20087 , vital:29105
- Description: Olu phando luza kuphendla ukusetyenziswa kweenkumbulo nokulibala ngabalinganiswa kwiincwadi ezichongiweyo zesiXhosa. Apha kuvezwa ukuba iinkumbulo zinika umkhombandlela womakwenziwe. Kuza kugocwagocwa ezi ncwadi zilandelayo: Ingalo ngokubhalwe ngu-K.S. Bongela Elundini loThukela ngokubhalwe ngu-J.J.R. Jolobe Ukuqhawuka kwembeleko ngokubhalwe ngu-D.M. Jongilanga Ingqumbo yeminyanya ngokubhalwe ngu-A.C. Jordan Bhota Nonceba ibhalwe ngu-B.B. Mafuya UMakhwekhwetha ngokubhalwe ngu-R.F. Mcimeli Umqol’ uphandle ngokubhalwe ngu-M.A.P. Ngani Umkhonto kaTshiwo ngokubhalwe ngu-M.A.P. Ngani Unyana womntu ngokubhalwe ngu- N.Saule Vuleka mhlaba ngokubhalwe nguN. Saule Imijelo yegazi ngokubhalwe ngu-Z.S. Zotwana Apha kwezi ncwadi kuza kuhlutywa ukuba ukukhumbula nokulibala luyasetyenziswa ngabantu abantetho isisiXhosa nokuba wonke umntu unazo iinkumbulo, ingaba ziinkumbulo ezimnandi okanye ezinxunguphalisayo. Isahluko sokuqala salo msebenzi siza kunika amagqabantshintshi ngolu phando. Esi sahluko siqulathe: - Ingabula-zigcawu - Iinjongo zophando - Imibuzo ekhokelele ekwenziweni kolu phando - Indlela yokwenza olu phando - Ukubaluleka kolu phando - Okuthethwa zezinye iingcali ngeenkumbulo nokulibala - Ingcaciso magama Isahluko sesibini siqulathe iingcingane yeenkumbulo, ingcingane yobume bengqondo kwakunye nengcingane yokuqonda. Kukwajongwe abasunguli bezi ngcingane nemisebenzi yabo. Isahluko sesithathu siqwalasele iinkumbulo nempembelelo yazo kwinkcubeko nasentlalweni kwiincwadi ezichongiweyo. Isahluko sesine sijonge iinkumbulo zembali yepolitiki eMzantsi Afrika. Isahluko sesihlanu sicubungula iinkumbulo nokulibala kwezomthetho. Isahluko sesithandathu nesisesokugqibela - sishwankathela iziphumo zophando kukwanikwa nezindululo.
- Full Text:
- Date Issued: 2017
- Authors: Notshe, Lwandlekazi
- Date: 2017
- Subjects: Xhosa literature Xhosa drama -- Criticism and interpretation
- Language: English
- Type: Thesis , Doctoral , MBA
- Identifier: http://hdl.handle.net/10948/20087 , vital:29105
- Description: Olu phando luza kuphendla ukusetyenziswa kweenkumbulo nokulibala ngabalinganiswa kwiincwadi ezichongiweyo zesiXhosa. Apha kuvezwa ukuba iinkumbulo zinika umkhombandlela womakwenziwe. Kuza kugocwagocwa ezi ncwadi zilandelayo: Ingalo ngokubhalwe ngu-K.S. Bongela Elundini loThukela ngokubhalwe ngu-J.J.R. Jolobe Ukuqhawuka kwembeleko ngokubhalwe ngu-D.M. Jongilanga Ingqumbo yeminyanya ngokubhalwe ngu-A.C. Jordan Bhota Nonceba ibhalwe ngu-B.B. Mafuya UMakhwekhwetha ngokubhalwe ngu-R.F. Mcimeli Umqol’ uphandle ngokubhalwe ngu-M.A.P. Ngani Umkhonto kaTshiwo ngokubhalwe ngu-M.A.P. Ngani Unyana womntu ngokubhalwe ngu- N.Saule Vuleka mhlaba ngokubhalwe nguN. Saule Imijelo yegazi ngokubhalwe ngu-Z.S. Zotwana Apha kwezi ncwadi kuza kuhlutywa ukuba ukukhumbula nokulibala luyasetyenziswa ngabantu abantetho isisiXhosa nokuba wonke umntu unazo iinkumbulo, ingaba ziinkumbulo ezimnandi okanye ezinxunguphalisayo. Isahluko sokuqala salo msebenzi siza kunika amagqabantshintshi ngolu phando. Esi sahluko siqulathe: - Ingabula-zigcawu - Iinjongo zophando - Imibuzo ekhokelele ekwenziweni kolu phando - Indlela yokwenza olu phando - Ukubaluleka kolu phando - Okuthethwa zezinye iingcali ngeenkumbulo nokulibala - Ingcaciso magama Isahluko sesibini siqulathe iingcingane yeenkumbulo, ingcingane yobume bengqondo kwakunye nengcingane yokuqonda. Kukwajongwe abasunguli bezi ngcingane nemisebenzi yabo. Isahluko sesithathu siqwalasele iinkumbulo nempembelelo yazo kwinkcubeko nasentlalweni kwiincwadi ezichongiweyo. Isahluko sesine sijonge iinkumbulo zembali yepolitiki eMzantsi Afrika. Isahluko sesihlanu sicubungula iinkumbulo nokulibala kwezomthetho. Isahluko sesithandathu nesisesokugqibela - sishwankathela iziphumo zophando kukwanikwa nezindululo.
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- Date Issued: 2017
Urban foraging: a ubiquitous human practice overlooked by urban planners, policy, and research
- Shackleton, Charlie M, Hurley, Patrick T, Dahlberg, Annika C, Emery, Marla R, Nagendra, Harini
- Authors: Shackleton, Charlie M , Hurley, Patrick T , Dahlberg, Annika C , Emery, Marla R , Nagendra, Harini
- Date: 2017
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/60876 , vital:27848 , https://doi.org/10.3390/su9101884
- Description: Although hardly noticed or formally recognised, urban foraging by humans probably occurs in all urban settings around the world. We draw from research in India, South Africa, Sweden, and the United States to demonstrate the ubiquity and varied nature of urban foraging in different contexts. Across these different contexts, we distil seven themes that characterise and thereby advance thinking about research and the understanding of urban foraging. We show that it is widespread and occurs across a variety of urban spaces and places. The species used and the local practices vary between contexts, and are in constant flux as urban ecological and social settings change. This requires that urban foragers are knowledgeable about diverse species, harvest locations, and rights of access, and that their practices are adaptable to changing contexts. Despite its ubiquity, most cities have some forms of regulations that prohibit or discourage urban foraging. We highlight a few important exceptions that can provide prototypes and lessons for other cities regarding supportive policy frameworks and initiatives. The formulation of dynamic policy, design, and management strategies in support of urban foraging will benefit from understanding the common characteristics of foraging in cities worldwide, but also will require comprehension of the specific and dynamic contexts in which they would be implemented.
- Full Text:
- Date Issued: 2017
- Authors: Shackleton, Charlie M , Hurley, Patrick T , Dahlberg, Annika C , Emery, Marla R , Nagendra, Harini
- Date: 2017
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/60876 , vital:27848 , https://doi.org/10.3390/su9101884
- Description: Although hardly noticed or formally recognised, urban foraging by humans probably occurs in all urban settings around the world. We draw from research in India, South Africa, Sweden, and the United States to demonstrate the ubiquity and varied nature of urban foraging in different contexts. Across these different contexts, we distil seven themes that characterise and thereby advance thinking about research and the understanding of urban foraging. We show that it is widespread and occurs across a variety of urban spaces and places. The species used and the local practices vary between contexts, and are in constant flux as urban ecological and social settings change. This requires that urban foragers are knowledgeable about diverse species, harvest locations, and rights of access, and that their practices are adaptable to changing contexts. Despite its ubiquity, most cities have some forms of regulations that prohibit or discourage urban foraging. We highlight a few important exceptions that can provide prototypes and lessons for other cities regarding supportive policy frameworks and initiatives. The formulation of dynamic policy, design, and management strategies in support of urban foraging will benefit from understanding the common characteristics of foraging in cities worldwide, but also will require comprehension of the specific and dynamic contexts in which they would be implemented.
- Full Text:
- Date Issued: 2017
Urban resilience determinants with specific reference to the Buffalo City Metropolitan Municipality, East London
- Authors: Ntakana, Khululekani
- Date: 2017
- Subjects: City planning -- South Africa -- East London Sustainable development -- South Africa -- East London , Regional planning -- South Africa -- East London Infrastructure (Economics) -- South Africa -- East London -- Planning
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/19495 , vital:28886
- Description: The year 1994 marked the dawn of the new democratic South Africa, bringing its own set of challenges to the country. Currently urban areas cover only one and a half percent of South Africa’s surface area. However, sixty one percent of South Africans live in urban areas. Furthermore, the average growth rate for urban areas has been consistently higher than the population growth rate during the period from 1998 to 2008. This resulted in larger towns and cities, growing at the expense of rural areas, with metropolitan areas experiencing the highest influx, followed by secondary cities. However, urban areas consume more water, food, energy, and durable goods, and have an impact far beyond the urban boundaries. This directly relates to urban decline. The rapid influx of people into urban areas that are already overcrowded with large service delivery backlogs, has led to the formation of informal settlements in exposed locations. Many of the informal dwellings in South Africa are subjected to environmental factors. The absence of basic services in overcrowded areas is linked to negative health outcomes and enhanced environmental degradation. This study is a critical review of a phenomenon named urban resilience. The report seeks to highlight the current status in cities and the transformation that cities need to undergo to enable them to become the cities of tomorrow. Indeed, “sustainable future cities and human settlements begin today”. The paper raises arguments on urban resilience by different theorists, philosophers, academics and scholars. The study proceeds to unpack the urban resilience determinants. Furthermore, the challenges cites will experience in responding to rapid urbanisation and their denial attitude to informal settlement and environmental degradation, which include how cities respond to climate change, are under investigation . The purpose of the study is to share the theoretical framework relative to the urban resilience determinants, with the intention to solicit criticism on gaps and blind spots. This is done with specific reference to Buffalo City Municipality. This study aims to contribute to the goals of municipalities by improving understanding of the drivers of urban resilience. This will, in turn, enable a city system to withstand and recover quickly from multiple and diverse shocks and stresses, and improve its performance over time. However, this study was conducted within a qualitative paradigm. The study followed a non-probability sampling technique. Categories of data sources were identified based on their probability to hold information that is crucial to the study. For each category, this study followed a 50 + 1 rule for sampling size when the population of the data sources were identified and access gained. he statistical software (SPSS) supported by a qualified statistician was used to analyse data qualitatively in attempt to answer the research question.
- Full Text:
- Date Issued: 2017
- Authors: Ntakana, Khululekani
- Date: 2017
- Subjects: City planning -- South Africa -- East London Sustainable development -- South Africa -- East London , Regional planning -- South Africa -- East London Infrastructure (Economics) -- South Africa -- East London -- Planning
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/19495 , vital:28886
- Description: The year 1994 marked the dawn of the new democratic South Africa, bringing its own set of challenges to the country. Currently urban areas cover only one and a half percent of South Africa’s surface area. However, sixty one percent of South Africans live in urban areas. Furthermore, the average growth rate for urban areas has been consistently higher than the population growth rate during the period from 1998 to 2008. This resulted in larger towns and cities, growing at the expense of rural areas, with metropolitan areas experiencing the highest influx, followed by secondary cities. However, urban areas consume more water, food, energy, and durable goods, and have an impact far beyond the urban boundaries. This directly relates to urban decline. The rapid influx of people into urban areas that are already overcrowded with large service delivery backlogs, has led to the formation of informal settlements in exposed locations. Many of the informal dwellings in South Africa are subjected to environmental factors. The absence of basic services in overcrowded areas is linked to negative health outcomes and enhanced environmental degradation. This study is a critical review of a phenomenon named urban resilience. The report seeks to highlight the current status in cities and the transformation that cities need to undergo to enable them to become the cities of tomorrow. Indeed, “sustainable future cities and human settlements begin today”. The paper raises arguments on urban resilience by different theorists, philosophers, academics and scholars. The study proceeds to unpack the urban resilience determinants. Furthermore, the challenges cites will experience in responding to rapid urbanisation and their denial attitude to informal settlement and environmental degradation, which include how cities respond to climate change, are under investigation . The purpose of the study is to share the theoretical framework relative to the urban resilience determinants, with the intention to solicit criticism on gaps and blind spots. This is done with specific reference to Buffalo City Municipality. This study aims to contribute to the goals of municipalities by improving understanding of the drivers of urban resilience. This will, in turn, enable a city system to withstand and recover quickly from multiple and diverse shocks and stresses, and improve its performance over time. However, this study was conducted within a qualitative paradigm. The study followed a non-probability sampling technique. Categories of data sources were identified based on their probability to hold information that is crucial to the study. For each category, this study followed a 50 + 1 rule for sampling size when the population of the data sources were identified and access gained. he statistical software (SPSS) supported by a qualified statistician was used to analyse data qualitatively in attempt to answer the research question.
- Full Text:
- Date Issued: 2017
Use of fungicides for the management of Uromycladium acaciae in Acacia mearnsii plantations, South Africa
- Authors: Payn, Richard Guy
- Date: 2017
- Subjects: Fungicides -- South Africa Acacia mearnsii -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/20500 , vital:29299
- Description: South Africa has ca. 110 000 ha planted to Acacia mearnsii with 85% of the revenue from the species obtained from the timber, and 15% from the bark. Since its detection in 2013, wattle rust (recently identified as Uromycladium acaciae) has spread throughout the black wattle plantation area in KwaZulu-Natal, and from 2015 it was recorded in southern Mpumalanga. The pathogen affects trees of all age classes, causing a reduction in growth, as well as mortality with severe infection. Research has been initiated to determine a number of strategies for the management of the pathogen. These strategies include understanding wattle rust biology and epidemiology, planting tolerant or resistant black wattle, the testing and use of fungicide for management, and remote sensing and process based modelling to assess black wattle loss and high risk areas. These, with the outcomes from this research, will be combined into an overall Integrated Pest Management plan. Of the various strategies, the management of wattle rust with the use of fungicides is important, not only as it will have the potential to reduce the negative impacts of wattle rust, but it will also provide an interim solution until the other research areas provide alternative solutions. To address the current lack of fungicides available (and knowledge around their application) for the management of wattle rust, a series of trials were implemented to screen fungicides for their potential use, extend periods between the re-application of fungicide (if possible), the linking of symptoms to Disease Expression to aid with the timing of application, and the cost:benefits associated with fungicide use. Prior to the initiation of research into managing wattle rust, no fungicides were registered in South Africa for the control of wattle rust. In October / November 2014, three A. mearnsii trials were initiated in the KwaZulu-Natal Midlands and SE Mpumulanga where fungicides were tested at varying rates for the control of wattle rust. Wattle rust had a significant and negative impact on tree growth, irrespective of site and/or previous infection. All fungicides tested and at all the rates applied, proved effective for control. For the most effective control of wattle rust, fungicides should be applied as a preventative, rather than corrective measure. In October 2015 a trial was initiated in southern KwaZulu-Natal to determine the effectiveness of varied application schedules and adjuvants of fungicides for the management of wattle rust. Two trials had initially been initiated but one had to be abandoned due to browsing damage. Wattle rust had a significant impact upon Groundline Diameter and Biomass Index but not Height. All of the adjuvants used and application schedules were effective in managing wattle rust. The most effective fungicide application used will therefore be based upon cost and in a manner that will reduce the likelihood of acquired resistance developing in wattle rust populations. The timing of fungicide application is necessary for optimal use of these fungicides. Fungicide applications could potentially be linked to the emergence of different wattle rust symptoms to optimize fungicide use. Wattle rust symptoms were analysed from the untreated control plots of two trials, one in the KwaZulu-Natal midlands and one in southern KwaZulu-Natal, to determine whether wattle rust Disease expression could be linked to black wattle tree growth. Regression trees were used for the analysis, as linear and multiple regression techniques would be unsuitable for the data. Regression trees were overfitted and attempts at testing the robustness of the model by cross-validation were unsuccessful. No individual symptom emerged as a significant predictor of tree growth, indicating that fungicide application should take place with the onset of any of the wattle rust symptoms tested. The results from six trials testing the use of fungicides for managing wattle rust were compared to assess costs associated with fungicide use. Relative growth for Biomass Index was compared to untreated controls to obtain comparisons within and between sites. Costs versus benefit were compared using a two-way table to determine the most optimum treatment. The largest portion of treatment costs was attributed to the cost of fungicide. No single treatment was found to be optimal for the recommended rate of application. The use of adjuvants increased the cost of treatment, without additional benefit in growth. Control of wattle rust is beneficial, although costly if over-applied. Rotation-end data is required to determine whether fungicide use is economical for managing wattle rust over an extended period of time. As a limited number of fungicides, from a limited number of fungicide groups were screened, the screening of additional fungicides from different fungicide groups will provide an additional selection of fungicides. If these are used in combination or alternation, the likelihood of acquired resistance developing among wattle rust populations will be reduced. Linking fungicide applications with wattle rust epidemiological and climatic data will aid in optimal use of fungicides, by timing applications to coincide with epidemiological and climatic cues. Rotation end research comparing final yield on fungicide treated versus untreated black wattle is needed to fully understand the economics of fungicide use. This will also aid in the understanding of the impact of wattle rust on tree age.
- Full Text:
- Date Issued: 2017
- Authors: Payn, Richard Guy
- Date: 2017
- Subjects: Fungicides -- South Africa Acacia mearnsii -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/20500 , vital:29299
- Description: South Africa has ca. 110 000 ha planted to Acacia mearnsii with 85% of the revenue from the species obtained from the timber, and 15% from the bark. Since its detection in 2013, wattle rust (recently identified as Uromycladium acaciae) has spread throughout the black wattle plantation area in KwaZulu-Natal, and from 2015 it was recorded in southern Mpumalanga. The pathogen affects trees of all age classes, causing a reduction in growth, as well as mortality with severe infection. Research has been initiated to determine a number of strategies for the management of the pathogen. These strategies include understanding wattle rust biology and epidemiology, planting tolerant or resistant black wattle, the testing and use of fungicide for management, and remote sensing and process based modelling to assess black wattle loss and high risk areas. These, with the outcomes from this research, will be combined into an overall Integrated Pest Management plan. Of the various strategies, the management of wattle rust with the use of fungicides is important, not only as it will have the potential to reduce the negative impacts of wattle rust, but it will also provide an interim solution until the other research areas provide alternative solutions. To address the current lack of fungicides available (and knowledge around their application) for the management of wattle rust, a series of trials were implemented to screen fungicides for their potential use, extend periods between the re-application of fungicide (if possible), the linking of symptoms to Disease Expression to aid with the timing of application, and the cost:benefits associated with fungicide use. Prior to the initiation of research into managing wattle rust, no fungicides were registered in South Africa for the control of wattle rust. In October / November 2014, three A. mearnsii trials were initiated in the KwaZulu-Natal Midlands and SE Mpumulanga where fungicides were tested at varying rates for the control of wattle rust. Wattle rust had a significant and negative impact on tree growth, irrespective of site and/or previous infection. All fungicides tested and at all the rates applied, proved effective for control. For the most effective control of wattle rust, fungicides should be applied as a preventative, rather than corrective measure. In October 2015 a trial was initiated in southern KwaZulu-Natal to determine the effectiveness of varied application schedules and adjuvants of fungicides for the management of wattle rust. Two trials had initially been initiated but one had to be abandoned due to browsing damage. Wattle rust had a significant impact upon Groundline Diameter and Biomass Index but not Height. All of the adjuvants used and application schedules were effective in managing wattle rust. The most effective fungicide application used will therefore be based upon cost and in a manner that will reduce the likelihood of acquired resistance developing in wattle rust populations. The timing of fungicide application is necessary for optimal use of these fungicides. Fungicide applications could potentially be linked to the emergence of different wattle rust symptoms to optimize fungicide use. Wattle rust symptoms were analysed from the untreated control plots of two trials, one in the KwaZulu-Natal midlands and one in southern KwaZulu-Natal, to determine whether wattle rust Disease expression could be linked to black wattle tree growth. Regression trees were used for the analysis, as linear and multiple regression techniques would be unsuitable for the data. Regression trees were overfitted and attempts at testing the robustness of the model by cross-validation were unsuccessful. No individual symptom emerged as a significant predictor of tree growth, indicating that fungicide application should take place with the onset of any of the wattle rust symptoms tested. The results from six trials testing the use of fungicides for managing wattle rust were compared to assess costs associated with fungicide use. Relative growth for Biomass Index was compared to untreated controls to obtain comparisons within and between sites. Costs versus benefit were compared using a two-way table to determine the most optimum treatment. The largest portion of treatment costs was attributed to the cost of fungicide. No single treatment was found to be optimal for the recommended rate of application. The use of adjuvants increased the cost of treatment, without additional benefit in growth. Control of wattle rust is beneficial, although costly if over-applied. Rotation-end data is required to determine whether fungicide use is economical for managing wattle rust over an extended period of time. As a limited number of fungicides, from a limited number of fungicide groups were screened, the screening of additional fungicides from different fungicide groups will provide an additional selection of fungicides. If these are used in combination or alternation, the likelihood of acquired resistance developing among wattle rust populations will be reduced. Linking fungicide applications with wattle rust epidemiological and climatic data will aid in optimal use of fungicides, by timing applications to coincide with epidemiological and climatic cues. Rotation end research comparing final yield on fungicide treated versus untreated black wattle is needed to fully understand the economics of fungicide use. This will also aid in the understanding of the impact of wattle rust on tree age.
- Full Text:
- Date Issued: 2017
User experience guidelines for mobile natural user interfaces: a case study of physically disabled users
- Authors: Jacobs, Gershwin
- Date: 2017
- Subjects: User interfaces (Computer systems) Human-computer interaction , Mobile computing Augmented reality
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/17547 , vital:28377
- Description: Motor impaired people are faced with many challenges, one being the of lack integration into certain spheres of society. Access to information is seen as a major issue for the motor impaired since most forms of interaction or interactive devices are not suited to the needs of motor impaired people. People with motor impairments, like the rest of the population, are increasingly using mobile phones. As a result of the current devices and methods used for interaction with content on mobile phones, various factors prohibit a pleasant experience for users with motor impairments. To counter these factors, this study recognizes the need to implement better suited methods of interaction and navigation to improve accessibility, usability and user experience for motor impaired users. The objective of the study was to gain an understanding of the nature of motor impairments and the challenges that this group of people face when using mobile phones. Once this was determined, a solution to address this problem was found in the form of natural user interfaces. In order to gain a better understanding of this technology, various forms of NUIs and the benefits thereof were studied by the researcher in order to determine how this technology can be implemented to meet the needs of motor impaired people. To test theory, the Samsung Galaxy s5 was selected as the NUI device for the study. It must be noted that this study started in the year 2013 and the Galaxy S5 was the latest device claiming to improve interaction for disabled people at the time. This device was used in a case study that made use of various data collection methods, including participant interviews. Various motor impaired participants were requested to perform predefined tasks on the device, along with the completion of a set of user experience questionnaires. Based on the results of the study, it was found that interaction with mobile phones is an issue for people with motor impairments and that alternative methods of interaction need to be implemented. These results contributed to the final output of this study, namely a set of user experience guidelines for the design of mobile human computer interaction for motor impaired users.
- Full Text:
- Date Issued: 2017
- Authors: Jacobs, Gershwin
- Date: 2017
- Subjects: User interfaces (Computer systems) Human-computer interaction , Mobile computing Augmented reality
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/17547 , vital:28377
- Description: Motor impaired people are faced with many challenges, one being the of lack integration into certain spheres of society. Access to information is seen as a major issue for the motor impaired since most forms of interaction or interactive devices are not suited to the needs of motor impaired people. People with motor impairments, like the rest of the population, are increasingly using mobile phones. As a result of the current devices and methods used for interaction with content on mobile phones, various factors prohibit a pleasant experience for users with motor impairments. To counter these factors, this study recognizes the need to implement better suited methods of interaction and navigation to improve accessibility, usability and user experience for motor impaired users. The objective of the study was to gain an understanding of the nature of motor impairments and the challenges that this group of people face when using mobile phones. Once this was determined, a solution to address this problem was found in the form of natural user interfaces. In order to gain a better understanding of this technology, various forms of NUIs and the benefits thereof were studied by the researcher in order to determine how this technology can be implemented to meet the needs of motor impaired people. To test theory, the Samsung Galaxy s5 was selected as the NUI device for the study. It must be noted that this study started in the year 2013 and the Galaxy S5 was the latest device claiming to improve interaction for disabled people at the time. This device was used in a case study that made use of various data collection methods, including participant interviews. Various motor impaired participants were requested to perform predefined tasks on the device, along with the completion of a set of user experience questionnaires. Based on the results of the study, it was found that interaction with mobile phones is an issue for people with motor impairments and that alternative methods of interaction need to be implemented. These results contributed to the final output of this study, namely a set of user experience guidelines for the design of mobile human computer interaction for motor impaired users.
- Full Text:
- Date Issued: 2017
Using African Languages to teach Science in higher education
- Gambushe, Wanga, Nkomo, Dion, Maseko, Pamela
- Authors: Gambushe, Wanga , Nkomo, Dion , Maseko, Pamela
- Date: 2017
- Subjects: To be catalogued
- Language: English
- Type: text , book chapter
- Identifier: http://hdl.handle.net/10962/468294 , vital:77040 , ISBN 9781776140275 , https://muse.jhu.edu/book/52741
- Description: To date, there has been no published textbook which takes into account changing sociolinguistic dynamics that have influenced South African society. Multilingualism and Intercultural Communication breaks new ground in this arena. Its scope ranges from macro-sociolinguistic questions pertaining to language policies and their implementation (or non-implementation), to micro-sociolinguistic observations of actual language-use in verbal interaction, mainly in multilingual contexts of Higher Education (HE). There is a gradual move for the study of language and culture to be taught in the context of (professional) disciplines in which they would be used, such as Journalism and African languages, Education and African languages, etc. The book caters for this growing market. Because of its multilingual nature, it caters to English and Afrikaans language speakers, as well as the Sotho and Nguni language groups. It brings together various inter-linked disciplines such as Sociolinguistics and Applied Language Studies, Media Studies and Journalism, History and Education, Social and Natural Sciences, Law, Human Language Technology, Music, Intercultural Communication and Literary Studies. The unique cross-cutting disciplinary features of the book will make it a must-have for twenty-first century South African students and scholars and those interested in applied language issues.
- Full Text:
- Date Issued: 2017
- Authors: Gambushe, Wanga , Nkomo, Dion , Maseko, Pamela
- Date: 2017
- Subjects: To be catalogued
- Language: English
- Type: text , book chapter
- Identifier: http://hdl.handle.net/10962/468294 , vital:77040 , ISBN 9781776140275 , https://muse.jhu.edu/book/52741
- Description: To date, there has been no published textbook which takes into account changing sociolinguistic dynamics that have influenced South African society. Multilingualism and Intercultural Communication breaks new ground in this arena. Its scope ranges from macro-sociolinguistic questions pertaining to language policies and their implementation (or non-implementation), to micro-sociolinguistic observations of actual language-use in verbal interaction, mainly in multilingual contexts of Higher Education (HE). There is a gradual move for the study of language and culture to be taught in the context of (professional) disciplines in which they would be used, such as Journalism and African languages, Education and African languages, etc. The book caters for this growing market. Because of its multilingual nature, it caters to English and Afrikaans language speakers, as well as the Sotho and Nguni language groups. It brings together various inter-linked disciplines such as Sociolinguistics and Applied Language Studies, Media Studies and Journalism, History and Education, Social and Natural Sciences, Law, Human Language Technology, Music, Intercultural Communication and Literary Studies. The unique cross-cutting disciplinary features of the book will make it a must-have for twenty-first century South African students and scholars and those interested in applied language issues.
- Full Text:
- Date Issued: 2017
Using computer vision to categorize tyres and estimate the number of visible tyres in tyre stockpile images
- Authors: Eastwood, Grant
- Date: 2017
- Subjects: Tires -- Specifications Tires -- Recycling , Tires -- Maintenance and repair
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/16022 , vital:28313
- Description: Pressures from environmental agencies contribute to the challenges associated with the disposal of waste tyres, particularly in South Africa. Recycling of waste tyres in South Africa is in its infancy resulting in the historically undocumented and uncontrolled existence of waste tyre stockpiles across the country. The remote and distant locations of such stockpiles typically complicate the logistics associated with the collection, transport and storage of waste tyres prior to entering the recycling process. In order to optimize the logistics associated with the collection of waste tyres from stockpiles, useful information about such stockpiles would include estimates of the types of tyres as well as the quantity of specific tyre types found in particular stockpiles. This research proposes the use of computer vision for categorizing individual tyres and estimating the number of visible tyres in tyre stockpile images to support the logistics in tyre recycling efforts. The study begins with a broad review of image processing and computer vision algorithms for categorization and counting objects in images. The bag of visual words (BoVW) model for categorization is tested on two small data sets of tread tyre images using a random sub-sampling holdout method. The categorization results are evaluated using performance metrics for multiclass classifiers, namely the average accuracy, precision, and recall. The results indicated that corner-based local feature detectors combined with speeded up robust features (SURF) descriptors in a BoVW model provide moderately accurate categorization of tyres based on tread images. Two feature extraction methods for extracting features for use in training neural networks (NNs) for tyre count estimations in tyre stockpiles are proposed. The two feature extraction methods are used to describe images in terms of feature vectors that can be used as input for NNs. The first feature extraction method uses the BoVW model with histograms of oriented gradients (HOG) features collected from overlapping sub-images to create a visual vocabulary and describe the images in terms of their visual word occurrence histogram. The second feature extraction method uses the image gradient magnitude, gradient orientation, and edge orientations of edges detected using the Canny edge detector. A concatenated histogram is constructed from individual histograms of gradient orientations and gradient magnitude. The histograms are then used to train NNs using backpropogation to approximate functions from the feature vectors describing the images to scalar count estimations. The accuracy of visible object count predictions are evaluated using NN evaluation techniques to determine the accuracy of predictions and the generalization ability of the fit model. The count estimation experiments using the two feature extraction methods for input to NNs showed that fairly accurate count estimations can be obtained and that the fit model could generalize fairly well to unseen images.
- Full Text:
- Date Issued: 2017
- Authors: Eastwood, Grant
- Date: 2017
- Subjects: Tires -- Specifications Tires -- Recycling , Tires -- Maintenance and repair
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/16022 , vital:28313
- Description: Pressures from environmental agencies contribute to the challenges associated with the disposal of waste tyres, particularly in South Africa. Recycling of waste tyres in South Africa is in its infancy resulting in the historically undocumented and uncontrolled existence of waste tyre stockpiles across the country. The remote and distant locations of such stockpiles typically complicate the logistics associated with the collection, transport and storage of waste tyres prior to entering the recycling process. In order to optimize the logistics associated with the collection of waste tyres from stockpiles, useful information about such stockpiles would include estimates of the types of tyres as well as the quantity of specific tyre types found in particular stockpiles. This research proposes the use of computer vision for categorizing individual tyres and estimating the number of visible tyres in tyre stockpile images to support the logistics in tyre recycling efforts. The study begins with a broad review of image processing and computer vision algorithms for categorization and counting objects in images. The bag of visual words (BoVW) model for categorization is tested on two small data sets of tread tyre images using a random sub-sampling holdout method. The categorization results are evaluated using performance metrics for multiclass classifiers, namely the average accuracy, precision, and recall. The results indicated that corner-based local feature detectors combined with speeded up robust features (SURF) descriptors in a BoVW model provide moderately accurate categorization of tyres based on tread images. Two feature extraction methods for extracting features for use in training neural networks (NNs) for tyre count estimations in tyre stockpiles are proposed. The two feature extraction methods are used to describe images in terms of feature vectors that can be used as input for NNs. The first feature extraction method uses the BoVW model with histograms of oriented gradients (HOG) features collected from overlapping sub-images to create a visual vocabulary and describe the images in terms of their visual word occurrence histogram. The second feature extraction method uses the image gradient magnitude, gradient orientation, and edge orientations of edges detected using the Canny edge detector. A concatenated histogram is constructed from individual histograms of gradient orientations and gradient magnitude. The histograms are then used to train NNs using backpropogation to approximate functions from the feature vectors describing the images to scalar count estimations. The accuracy of visible object count predictions are evaluated using NN evaluation techniques to determine the accuracy of predictions and the generalization ability of the fit model. The count estimation experiments using the two feature extraction methods for input to NNs showed that fairly accurate count estimations can be obtained and that the fit model could generalize fairly well to unseen images.
- Full Text:
- Date Issued: 2017
Using Dialectical Critical Realism in the Analysis of Career Stories in Learning Pathways Research
- Lotz-Sisitka, Heila, Ramsarup, Preesha
- Authors: Lotz-Sisitka, Heila , Ramsarup, Preesha
- Date: 2017
- Subjects: To be catalogued
- Language: English
- Type: text , bulletin
- Identifier: http://hdl.handle.net/10962/436416 , vital:73270 , ISBN bulletin , https://www.saqa.org.za/wp-content/uploads/2023/02/SAQA-Bulletin-2017-1.pdf#page=37
- Description: In this paper we expand on our earlier methodological deliberations asso-ciated with differentiation within systems, boundaries and transition mechanisms (see Paper 2 in this Bulletin). We explore the potential for using a combination of two methodological tools for our learning path-ways research, in order to address the central methodological question raised through the literature review of learning pathways research, which highlighted a macro-micro dualism this area of study (see Paper 3 in this Bulletin). In Paper 4, we seek to explore whether Bhaskar’s (1993) dialec-tical approach may help with addressing this methodological dualism. We do this through applying the dialectical method, to career stories research approaches, which are one of the foundational approaches used in learn-ing pathways research (see Paper 3 in this Bulletin). Our analysis in this paper therefore uses (a) the development of ‘career stories’ and (b) Criti-cal Realist analysis of these career stories, using Bhaskar’s (1993) dialecti-cal method which foregrounds both absence and emergence.
- Full Text:
- Date Issued: 2017
- Authors: Lotz-Sisitka, Heila , Ramsarup, Preesha
- Date: 2017
- Subjects: To be catalogued
- Language: English
- Type: text , bulletin
- Identifier: http://hdl.handle.net/10962/436416 , vital:73270 , ISBN bulletin , https://www.saqa.org.za/wp-content/uploads/2023/02/SAQA-Bulletin-2017-1.pdf#page=37
- Description: In this paper we expand on our earlier methodological deliberations asso-ciated with differentiation within systems, boundaries and transition mechanisms (see Paper 2 in this Bulletin). We explore the potential for using a combination of two methodological tools for our learning path-ways research, in order to address the central methodological question raised through the literature review of learning pathways research, which highlighted a macro-micro dualism this area of study (see Paper 3 in this Bulletin). In Paper 4, we seek to explore whether Bhaskar’s (1993) dialec-tical approach may help with addressing this methodological dualism. We do this through applying the dialectical method, to career stories research approaches, which are one of the foundational approaches used in learn-ing pathways research (see Paper 3 in this Bulletin). Our analysis in this paper therefore uses (a) the development of ‘career stories’ and (b) Criti-cal Realist analysis of these career stories, using Bhaskar’s (1993) dialecti-cal method which foregrounds both absence and emergence.
- Full Text:
- Date Issued: 2017
Using emotional intelligence interpersonal competency of empathy as a frame to combat xenophobia in schools: a case study
- Authors: Williams, Augustus
- Date: 2017
- Subjects: Teacher-student relationships , Emotional intelligence -- South Africa -- Students Education, Humanistic
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10948/13507 , vital:27214
- Description: The aim of this study was to explore how the perceptions of teachers on their emotional intelligence interpersonal competency of empathy that could be used as a frame to combat xenophobia in schools. The three objectives of this study was to explore and describe: teachers’ perceptions and experiences of xenophobic violence in schools in Port Elizabeth’s Northern Areas; teachers’ responses to xenophobic violence from the emotional intelligence interpersonal competency of empathy; and how emotional intelligence interpersonal competency of empathy could be used as a tool to combat xenophobia in schools. Foreign national learners in Port Elizabeth’s Northern Areas are subjected to xenophobic incidences by some teachers at these schools. This impacts negatively into these learners’ learning environment in these schools. It is behind this backdrop that this study sought to explore how the emotional intelligence interpersonal competency of empathy could be used by teachers as a frame to combat xenophobia in schools. The argument of this study therefore stems from the fact that teachers could use their EI interpersonal competency of empathy to combat xenophobia in their schools. Focus group and mini-focus group interviews was employed to get an explorative, descriptive and interpretive revelation, which was utilised to enhance validity and triangulation for this qualitative study.
- Full Text:
- Date Issued: 2017
- Authors: Williams, Augustus
- Date: 2017
- Subjects: Teacher-student relationships , Emotional intelligence -- South Africa -- Students Education, Humanistic
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10948/13507 , vital:27214
- Description: The aim of this study was to explore how the perceptions of teachers on their emotional intelligence interpersonal competency of empathy that could be used as a frame to combat xenophobia in schools. The three objectives of this study was to explore and describe: teachers’ perceptions and experiences of xenophobic violence in schools in Port Elizabeth’s Northern Areas; teachers’ responses to xenophobic violence from the emotional intelligence interpersonal competency of empathy; and how emotional intelligence interpersonal competency of empathy could be used as a tool to combat xenophobia in schools. Foreign national learners in Port Elizabeth’s Northern Areas are subjected to xenophobic incidences by some teachers at these schools. This impacts negatively into these learners’ learning environment in these schools. It is behind this backdrop that this study sought to explore how the emotional intelligence interpersonal competency of empathy could be used by teachers as a frame to combat xenophobia in schools. The argument of this study therefore stems from the fact that teachers could use their EI interpersonal competency of empathy to combat xenophobia in their schools. Focus group and mini-focus group interviews was employed to get an explorative, descriptive and interpretive revelation, which was utilised to enhance validity and triangulation for this qualitative study.
- Full Text:
- Date Issued: 2017
Using iterative learning to improve understanding during the informed consent process in a South African psychiatric genomics study
- Campbell, Megan M, Susser, Ezra, Mall, Sumaya, Mqulwana, Sibonile G, Mndini, Michael M, Ntola, Odwa A, Nagdee, Mohamed, Zingela, Zukiswa, Van Wyk, Stephanus, Stein, Dan J
- Authors: Campbell, Megan M , Susser, Ezra , Mall, Sumaya , Mqulwana, Sibonile G , Mndini, Michael M , Ntola, Odwa A , Nagdee, Mohamed , Zingela, Zukiswa , Van Wyk, Stephanus , Stein, Dan J
- Date: 2017
- Subjects: Informed consent (Medical law) , Patient education
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/11260/6114 , vital:45124 , https://doi.org/10.1371/journal.pone.0188466
- Description: Obtaining informed consent is a great challenge in global health research. There is a need for tools that can screen for and improve potential research participants’ understanding of the research study at the time of recruitment. Limited empirical research has been conducted in low and middle income countries, evaluating informed consent processes in genomics research. We sought to investigate the quality of informed consent obtained in a South African psychiatric genomics study. A Xhosa language version of the University of California, San Diego Brief Assessment of Capacity to Consent Questionnaire (UBACC) was used to screen for capacity to consent and improve understanding through iterative learning in a sample of 528 Xhosa people with schizophrenia and 528 controls. We address two questions: firstly, whether research participants’ understanding of the research study improved through iterative learning; and secondly, what were predictors for better understanding of the research study at the initial screening? During screening 290 (55%) cases and 172 (33%) controls scored below the 14.5 cut-off for acceptable understanding of the research study elements, however after iterative learning only 38 (7%) cases and 13 (2.5%) controls continued to score below this cut-off. Significant variables associated with increased understanding of the consent included the psychiatric nurse recruiter conducting the consent screening, higher participant level of education, and being a control. The UBACC proved an effective tool to improve understanding of research study elements during consent, for both cases and controls. The tool holds utility for complex studies such as those involving genomics, where iterative learning can be used to make significant improvements in understanding of research study elements. The UBACC may be particularly important in groups with severe mental illness and lower education levels. Study recruiters play a significant role in managing the quality of the informed consent process.
- Full Text:
- Date Issued: 2017
- Authors: Campbell, Megan M , Susser, Ezra , Mall, Sumaya , Mqulwana, Sibonile G , Mndini, Michael M , Ntola, Odwa A , Nagdee, Mohamed , Zingela, Zukiswa , Van Wyk, Stephanus , Stein, Dan J
- Date: 2017
- Subjects: Informed consent (Medical law) , Patient education
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/11260/6114 , vital:45124 , https://doi.org/10.1371/journal.pone.0188466
- Description: Obtaining informed consent is a great challenge in global health research. There is a need for tools that can screen for and improve potential research participants’ understanding of the research study at the time of recruitment. Limited empirical research has been conducted in low and middle income countries, evaluating informed consent processes in genomics research. We sought to investigate the quality of informed consent obtained in a South African psychiatric genomics study. A Xhosa language version of the University of California, San Diego Brief Assessment of Capacity to Consent Questionnaire (UBACC) was used to screen for capacity to consent and improve understanding through iterative learning in a sample of 528 Xhosa people with schizophrenia and 528 controls. We address two questions: firstly, whether research participants’ understanding of the research study improved through iterative learning; and secondly, what were predictors for better understanding of the research study at the initial screening? During screening 290 (55%) cases and 172 (33%) controls scored below the 14.5 cut-off for acceptable understanding of the research study elements, however after iterative learning only 38 (7%) cases and 13 (2.5%) controls continued to score below this cut-off. Significant variables associated with increased understanding of the consent included the psychiatric nurse recruiter conducting the consent screening, higher participant level of education, and being a control. The UBACC proved an effective tool to improve understanding of research study elements during consent, for both cases and controls. The tool holds utility for complex studies such as those involving genomics, where iterative learning can be used to make significant improvements in understanding of research study elements. The UBACC may be particularly important in groups with severe mental illness and lower education levels. Study recruiters play a significant role in managing the quality of the informed consent process.
- Full Text:
- Date Issued: 2017
Utilisation of the Auditor-General's reports in improving the audit outcomes at selected municipalities within Amathole District Municipality (2006- 2015)
- Kwaza, Makhosandile Hercules
- Authors: Kwaza, Makhosandile Hercules
- Date: 2017
- Subjects: Auditing -- South Africa -- Eastern Cape , Public administration -- South Africa -- Eastern Cape , Finance, Public -- South Africa -- Eastern Cape , Civil service -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/1664 , vital:27540
- Description: Amathole District Municipality has for the past five consecutive years been receiving an unqualified audit opinion from the AGSA. This has been the trend, despite the commitment made by the Executive Mayor in April 2012 to the then Auditor-General, Mr Nombembe, that the leadership of the municipality would deliver a clean audit outcome by 30 June 2013. This scenario is replicated in the local municipalities within the district. Two of the district municipalities have for the past three consecutive years been receiving a disclaimer audit opinion. In one of the municipalities, this trend changed; and this municipality received an unqualified audit opinion for two consecutive years; while in the third year, it received a qualified audit opinion. The stagnation and regression in the audit outcomes of these municipalities may be as a result of either the non-implementation of audit-action plans to address the previous year’s audit findings; or there could be other factors resulting in the above scenario. The main objective of this study is to investigate whether the utilisation of the Auditor-General’s reports improve the audit outcomes in selected municipalities within Amathole District Municipality for the period 01 July 2006 to 30 June 2015.
- Full Text:
- Date Issued: 2017
- Authors: Kwaza, Makhosandile Hercules
- Date: 2017
- Subjects: Auditing -- South Africa -- Eastern Cape , Public administration -- South Africa -- Eastern Cape , Finance, Public -- South Africa -- Eastern Cape , Civil service -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/1664 , vital:27540
- Description: Amathole District Municipality has for the past five consecutive years been receiving an unqualified audit opinion from the AGSA. This has been the trend, despite the commitment made by the Executive Mayor in April 2012 to the then Auditor-General, Mr Nombembe, that the leadership of the municipality would deliver a clean audit outcome by 30 June 2013. This scenario is replicated in the local municipalities within the district. Two of the district municipalities have for the past three consecutive years been receiving a disclaimer audit opinion. In one of the municipalities, this trend changed; and this municipality received an unqualified audit opinion for two consecutive years; while in the third year, it received a qualified audit opinion. The stagnation and regression in the audit outcomes of these municipalities may be as a result of either the non-implementation of audit-action plans to address the previous year’s audit findings; or there could be other factors resulting in the above scenario. The main objective of this study is to investigate whether the utilisation of the Auditor-General’s reports improve the audit outcomes in selected municipalities within Amathole District Municipality for the period 01 July 2006 to 30 June 2015.
- Full Text:
- Date Issued: 2017
Variation partitioning of benthic diatom community matrices: Effects of multiple variables on benthic diatom communities in an Austral temperate river system
- Dalu, Tatenda, Wasserman, Ryan J, Magoro, Mandla L, Mwedzi, Tongayi, Froneman, P William, Weyl, Olaf L F
- Authors: Dalu, Tatenda , Wasserman, Ryan J , Magoro, Mandla L , Mwedzi, Tongayi , Froneman, P William , Weyl, Olaf L F
- Date: 2017
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/467182 , vital:76837 , https://doi.org/10.1016/j.scitotenv.2017.05.162
- Description: This study explores diatom community dynamics in a highly modified semi-arid temperate region river system characterised by inconsistent river flow. Various water and sediment environmental variables were assessed using a multi-faceted analysis approach to determine the spatio-temporal drivers of benthic diatom communities in the river system. Overall, the diatom community was generally dominated by pollution tolerant species, reflecting the anthropogenic intensity and activities on the river system. Diatom community composition was found to be largely determined by water column chemistry variables particularly nutrient concentrations in comparison to sediment chemistry and physical variables. Strong seasonal diatom species composition was also observed and this was driven by strong seasonal variations in nutrient loads and metal concentrations, a result of the variable water flow across the two seasons. However, the greater temporal variation in communities was observed in the smaller systems with the mainstream river system being more homogenous over time. In addition, diatom community composition and environmental variables were found to be different and more pronounced between streams and mainstream sites, than between canals and streams. The study highlights the complex interaction between water column, sediment and physical variables in determining the diatom species composition in small river systems. It also highlights the importance of river flow inconsistency as an indirect variable that alters primary drivers such as nutrient concentrations in the water column and heavy metal levels in the sediment.
- Full Text:
- Date Issued: 2017
- Authors: Dalu, Tatenda , Wasserman, Ryan J , Magoro, Mandla L , Mwedzi, Tongayi , Froneman, P William , Weyl, Olaf L F
- Date: 2017
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/467182 , vital:76837 , https://doi.org/10.1016/j.scitotenv.2017.05.162
- Description: This study explores diatom community dynamics in a highly modified semi-arid temperate region river system characterised by inconsistent river flow. Various water and sediment environmental variables were assessed using a multi-faceted analysis approach to determine the spatio-temporal drivers of benthic diatom communities in the river system. Overall, the diatom community was generally dominated by pollution tolerant species, reflecting the anthropogenic intensity and activities on the river system. Diatom community composition was found to be largely determined by water column chemistry variables particularly nutrient concentrations in comparison to sediment chemistry and physical variables. Strong seasonal diatom species composition was also observed and this was driven by strong seasonal variations in nutrient loads and metal concentrations, a result of the variable water flow across the two seasons. However, the greater temporal variation in communities was observed in the smaller systems with the mainstream river system being more homogenous over time. In addition, diatom community composition and environmental variables were found to be different and more pronounced between streams and mainstream sites, than between canals and streams. The study highlights the complex interaction between water column, sediment and physical variables in determining the diatom species composition in small river systems. It also highlights the importance of river flow inconsistency as an indirect variable that alters primary drivers such as nutrient concentrations in the water column and heavy metal levels in the sediment.
- Full Text:
- Date Issued: 2017
Video games as “play assemblages”: applying philosophical concepts from deleuze and guattari to create a novel approach to video games
- Authors: Du Plessis, Corné
- Date: 2017
- Subjects: Video games Video games -- Research , Video games -- History and criticism Video games -- Analysis, appreciation
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/16119 , vital:28322
- Description: The phenomena that we collectively refer to as “play” form a significant part of life at numerous levels. According to the play scholar, Johan Huizinga, play has not only been part of all human societies, it is also at the root of the development of numerous cultural activities, including structured games and sports, certain judicial and legal activities, war, and numerous forms of art. Despite its importance, play, with its various manifestations, is often relegated to being a children’s activity or an occasion of pure waste, and is a surprisingly marginalized topic in academic scholarship. In part to remedy this deficit, my aim in this thesis is to explore the comparatively new phenomenon of video games as a particular form of play. While there are undoubtedly many philosophical approaches that can respond to different aspects of the “problem” of video games, I propose that Gilles Deleuze and Felix Guattari’s philosophy of “difference” and “becoming” is particularly useful. On the one hand, Deleuze and Guattari’s philosophy provides a viable framework through which to determine the limitations of the current prominent theories in the field of video game studies, which include “narratology”, “ludology”, and the more recent “hybrid approach”. On the other hand, their philosophy enables one to extend the creative and transformative potential that is inherent to a philosophical “problem”, in this case the “problem” of video games. By adapting selected Deleuzian and Deleuzoguattarian philosophical concepts, including “assemblage”, “percept”, “affect”, “transversal becoming”, and “becoming-imperceptible”, I aim to establish a philosophical framework through which different forms of play, and different video games, can be analyzed in terms of their capacity to generate “difference” and “becoming”. More specifically, I argue that video games can be understood as particular kinds of “play assemblages” that can potentially open the player to “transversal becomings”. The video games that I analyze as play assemblages that can generate “transversal becomings” are Thatgamecompany’s Flower (2009) and Journey (2012). Importantly, “transversal becomings”, understood in this instance as the “becoming-other” of human individuals, have the potential to contribute to the individual’s capacity for creative thought and action. Therefore, I argue that video games, far from being activities of pure waste, can potentially open the player to various forms of “becoming-other”, which can, in turn, increase the player’s capacity to think differently, to become different and to create differences. Ultimately, I aim to promote the value of play and video games on the one hand, and the value of Deleuze and Guattari’s philosophy on the other hand, for the aim of extending the questioning power of life, and increasing our capacity to effectively respond to a continuously changing world of problems.
- Full Text:
- Date Issued: 2017
- Authors: Du Plessis, Corné
- Date: 2017
- Subjects: Video games Video games -- Research , Video games -- History and criticism Video games -- Analysis, appreciation
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/16119 , vital:28322
- Description: The phenomena that we collectively refer to as “play” form a significant part of life at numerous levels. According to the play scholar, Johan Huizinga, play has not only been part of all human societies, it is also at the root of the development of numerous cultural activities, including structured games and sports, certain judicial and legal activities, war, and numerous forms of art. Despite its importance, play, with its various manifestations, is often relegated to being a children’s activity or an occasion of pure waste, and is a surprisingly marginalized topic in academic scholarship. In part to remedy this deficit, my aim in this thesis is to explore the comparatively new phenomenon of video games as a particular form of play. While there are undoubtedly many philosophical approaches that can respond to different aspects of the “problem” of video games, I propose that Gilles Deleuze and Felix Guattari’s philosophy of “difference” and “becoming” is particularly useful. On the one hand, Deleuze and Guattari’s philosophy provides a viable framework through which to determine the limitations of the current prominent theories in the field of video game studies, which include “narratology”, “ludology”, and the more recent “hybrid approach”. On the other hand, their philosophy enables one to extend the creative and transformative potential that is inherent to a philosophical “problem”, in this case the “problem” of video games. By adapting selected Deleuzian and Deleuzoguattarian philosophical concepts, including “assemblage”, “percept”, “affect”, “transversal becoming”, and “becoming-imperceptible”, I aim to establish a philosophical framework through which different forms of play, and different video games, can be analyzed in terms of their capacity to generate “difference” and “becoming”. More specifically, I argue that video games can be understood as particular kinds of “play assemblages” that can potentially open the player to “transversal becomings”. The video games that I analyze as play assemblages that can generate “transversal becomings” are Thatgamecompany’s Flower (2009) and Journey (2012). Importantly, “transversal becomings”, understood in this instance as the “becoming-other” of human individuals, have the potential to contribute to the individual’s capacity for creative thought and action. Therefore, I argue that video games, far from being activities of pure waste, can potentially open the player to various forms of “becoming-other”, which can, in turn, increase the player’s capacity to think differently, to become different and to create differences. Ultimately, I aim to promote the value of play and video games on the one hand, and the value of Deleuze and Guattari’s philosophy on the other hand, for the aim of extending the questioning power of life, and increasing our capacity to effectively respond to a continuously changing world of problems.
- Full Text:
- Date Issued: 2017
Video on demand in a high bandwidth world
- Authors: Machanick, Philip
- Date: 2017
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/439121 , vital:73546 , https://doi.org/10.1145/3129416.3129424
- Description: Video on Demand (VoD) is a challenging area requiring complex server and distributed systems architectures. In this paper I describe an alternative implementation of VoD that exploits the growing affordability of fibre bandwidth to remove the latency problems of scaling up VoD. I call the general principle Information Mass Transit (IMT). By analogy with regular mass transit, making all traffic move in bulk without individual service variation makes for a much more efficient system. The core idea is to broadcast the same movie repeatedly at short intervals. To explicate the design, I set this interval at 1 minute, implying a latency of up to a minute to start a movie. However, this latency can be disguised if a user has a catalogue of movies that includes the first minute of each. Provided the number of users is much higher than the number of movies, this approach is affordable in terms of bandwidth and totally removes any need for servers or network infrastructure, beyond new connections for new users, to scale with the number of users. I call this approach Scalable Architecture for Video on Demand or SAVoD.
- Full Text:
- Date Issued: 2017
- Authors: Machanick, Philip
- Date: 2017
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/439121 , vital:73546 , https://doi.org/10.1145/3129416.3129424
- Description: Video on Demand (VoD) is a challenging area requiring complex server and distributed systems architectures. In this paper I describe an alternative implementation of VoD that exploits the growing affordability of fibre bandwidth to remove the latency problems of scaling up VoD. I call the general principle Information Mass Transit (IMT). By analogy with regular mass transit, making all traffic move in bulk without individual service variation makes for a much more efficient system. The core idea is to broadcast the same movie repeatedly at short intervals. To explicate the design, I set this interval at 1 minute, implying a latency of up to a minute to start a movie. However, this latency can be disguised if a user has a catalogue of movies that includes the first minute of each. Provided the number of users is much higher than the number of movies, this approach is affordable in terms of bandwidth and totally removes any need for servers or network infrastructure, beyond new connections for new users, to scale with the number of users. I call this approach Scalable Architecture for Video on Demand or SAVoD.
- Full Text:
- Date Issued: 2017
Visual gaze behaviour of sub-elite cricket batsmen when facing fast in-swing and out-swing bowling
- Authors: Douglas, Wayde Percival
- Date: 2017
- Subjects: Cricket -- Batting -- Psychological aspects Gaze -- Psychological aspects , Visual perception
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/16098 , vital:28320
- Description: The primary aim of this study was to determine the visual gaze behaviour of sub-elite cricket batsmen when facing fast in-swing and out-swing bowling. To achieve the aim of this study, two main objectives were set: (1) to describe and compare the visual gaze behaviour of sub-elite cricket batsmen for both successful and unsuccessful trials irrespective of the ball faced; and (2) to describe and compare the visual gaze behaviour of sub-elite cricket batsmen for both in-swing and out-swing bowling trials irrespective of the outcome. The gaze behaviour characteristics were described and compared in terms areas of interest (AOI), number of fixations, duration of each fixation, starting and last fixation, and order of fixations. The study was pre-experimental in nature and utilised a quantitative approach. A One group post-test only design was followed in this study. A total of 13 batsmen were tested that met the inclusion criteria and were included in the study by means of purposive sampling. Four different variables were assessed: eye dominance, visual gaze behaviour, the speed of delivery and ambient light. No significant differences were found for the mean number and duration of fixations irrespective of the stroke outcome and the ball type faced. However, significant differences were obtained when specifically looking at the stroke outcome and the ball type faced. Results suggest that the AOI, upper body, arm/ ball release and pitch are considered as task relevant cues. Information appears to be acquired from the aforementioned AOI in a sequential manner to contribute to successful batting performance. In addition, batsmen should attempt to diminish the number of blinks at the end of trials to contribute towards more successful batting performance.
- Full Text:
- Date Issued: 2017
- Authors: Douglas, Wayde Percival
- Date: 2017
- Subjects: Cricket -- Batting -- Psychological aspects Gaze -- Psychological aspects , Visual perception
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/16098 , vital:28320
- Description: The primary aim of this study was to determine the visual gaze behaviour of sub-elite cricket batsmen when facing fast in-swing and out-swing bowling. To achieve the aim of this study, two main objectives were set: (1) to describe and compare the visual gaze behaviour of sub-elite cricket batsmen for both successful and unsuccessful trials irrespective of the ball faced; and (2) to describe and compare the visual gaze behaviour of sub-elite cricket batsmen for both in-swing and out-swing bowling trials irrespective of the outcome. The gaze behaviour characteristics were described and compared in terms areas of interest (AOI), number of fixations, duration of each fixation, starting and last fixation, and order of fixations. The study was pre-experimental in nature and utilised a quantitative approach. A One group post-test only design was followed in this study. A total of 13 batsmen were tested that met the inclusion criteria and were included in the study by means of purposive sampling. Four different variables were assessed: eye dominance, visual gaze behaviour, the speed of delivery and ambient light. No significant differences were found for the mean number and duration of fixations irrespective of the stroke outcome and the ball type faced. However, significant differences were obtained when specifically looking at the stroke outcome and the ball type faced. Results suggest that the AOI, upper body, arm/ ball release and pitch are considered as task relevant cues. Information appears to be acquired from the aforementioned AOI in a sequential manner to contribute to successful batting performance. In addition, batsmen should attempt to diminish the number of blinks at the end of trials to contribute towards more successful batting performance.
- Full Text:
- Date Issued: 2017
Visual narratives of division in contemporary Palestinian art and social space
- Authors: Baasch, Rachel Mary
- Date: 2017
- Subjects: Art, Palestinian Arab , Art, Palestinian Arab -- Political aspects , Art and society -- Palestine
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/41770 , vital:25132
- Description: This study analyses artworks by contemporary Palestinian artists that respond to visual narratives of division in social space from a perspective grounded in a South African context. The state of Israel is built on Historic Palestine. Political Zionism has created an ideological narrative of division that positions people of the Jewish faith as the rightful heirs to the land on which Palestinians have lived for centuries. In order to execute their vision of an exclusively Jewish nation state, the founding pioneers of political Zionism colonised and ethnically cleansed Historic Palestine, establishing Israel in 1948. To sustain the exclusive claim to Palestinian land, Israel has divided the space and the people in it at every possible level. The greatest testament to these efforts is the Israeli apartheid wall and checkpoint security system that can be described as a monumental visual narrative of division. With each second that passes, Israel claims more Palestinian land and expands on existing fences, walls and barriers. It is no secret that the Occupied Palestinian Territories are rapidly transforming into open-air prisons. Israel has stolen the Palestinian horizon line and replaced it with a concrete wall that blocks out light, vision and optimism. Within the shadows of these conflicted, traumatised sites of division, Palestinian artists seek openings, cracks and loopholes that signal the possibility for physical and psychological transgression of these seemingly impenetrable structures of division. I have developed a creative methodology that can be understood through the metaphor of ‘looking with the skin’ as a way to identify and analyse visual narratives of division and artistic responses to sites of division in Palestinian social space. Looking with the skin combines aspects of participant observation (specifically the emphasis on engaged fieldwork) from the discipline of Anthropology with the method of visual analysis from the discipline of Art History. In my application of this method through primary fieldwork conducted within the Occupied Palestinian West Bank Territory from 2013 and 2014, I have learnt that Israel’s colonisation, military occupation and system of apartheid directly impacts the ability of Palestinian artists to make and disseminate their work as well as the choice of content within their artwork. The artworks analysed in this thesis by the artists Khaled Jarrar, Y ael Bartana, Larissa Sansour, Hasan Darahgmeh, Fareh Saleh and Emily Jacir can be positioned in relation to artworks by artists based within a South African context, namely Thando Mama, Serge Alain Nitegeka and Doung Anwar Jahangeer. In this thesis I present a combination of my own photographic documentation of sites of division with the West Bank OPT in relation to the specific artworks made by the artists mentioned above. In my analysis of the photographic documentation and the artists’ work I highlight similarities, parallels, threads and intersecting narratives that connect different artists to one another and to the sites of division they are responding to within their artistic practice. This study carves a small conceptual pathway through ideological and physical walls from South Africa to Palestine through the study of contemporary art and visual culture.
- Full Text:
- Date Issued: 2017
- Authors: Baasch, Rachel Mary
- Date: 2017
- Subjects: Art, Palestinian Arab , Art, Palestinian Arab -- Political aspects , Art and society -- Palestine
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/41770 , vital:25132
- Description: This study analyses artworks by contemporary Palestinian artists that respond to visual narratives of division in social space from a perspective grounded in a South African context. The state of Israel is built on Historic Palestine. Political Zionism has created an ideological narrative of division that positions people of the Jewish faith as the rightful heirs to the land on which Palestinians have lived for centuries. In order to execute their vision of an exclusively Jewish nation state, the founding pioneers of political Zionism colonised and ethnically cleansed Historic Palestine, establishing Israel in 1948. To sustain the exclusive claim to Palestinian land, Israel has divided the space and the people in it at every possible level. The greatest testament to these efforts is the Israeli apartheid wall and checkpoint security system that can be described as a monumental visual narrative of division. With each second that passes, Israel claims more Palestinian land and expands on existing fences, walls and barriers. It is no secret that the Occupied Palestinian Territories are rapidly transforming into open-air prisons. Israel has stolen the Palestinian horizon line and replaced it with a concrete wall that blocks out light, vision and optimism. Within the shadows of these conflicted, traumatised sites of division, Palestinian artists seek openings, cracks and loopholes that signal the possibility for physical and psychological transgression of these seemingly impenetrable structures of division. I have developed a creative methodology that can be understood through the metaphor of ‘looking with the skin’ as a way to identify and analyse visual narratives of division and artistic responses to sites of division in Palestinian social space. Looking with the skin combines aspects of participant observation (specifically the emphasis on engaged fieldwork) from the discipline of Anthropology with the method of visual analysis from the discipline of Art History. In my application of this method through primary fieldwork conducted within the Occupied Palestinian West Bank Territory from 2013 and 2014, I have learnt that Israel’s colonisation, military occupation and system of apartheid directly impacts the ability of Palestinian artists to make and disseminate their work as well as the choice of content within their artwork. The artworks analysed in this thesis by the artists Khaled Jarrar, Y ael Bartana, Larissa Sansour, Hasan Darahgmeh, Fareh Saleh and Emily Jacir can be positioned in relation to artworks by artists based within a South African context, namely Thando Mama, Serge Alain Nitegeka and Doung Anwar Jahangeer. In this thesis I present a combination of my own photographic documentation of sites of division with the West Bank OPT in relation to the specific artworks made by the artists mentioned above. In my analysis of the photographic documentation and the artists’ work I highlight similarities, parallels, threads and intersecting narratives that connect different artists to one another and to the sites of division they are responding to within their artistic practice. This study carves a small conceptual pathway through ideological and physical walls from South Africa to Palestine through the study of contemporary art and visual culture.
- Full Text:
- Date Issued: 2017
Voices of the hungry: A qualitative measure of household food access and food insecurity in South Africa
- Chakona, Gamuchirai, Shackleton, Charlie M
- Authors: Chakona, Gamuchirai , Shackleton, Charlie M
- Date: 2017
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/398443 , vital:69412 , xlink:href="https://doi.org/10.1186/s40066-017-0149-x"
- Description: South Africa is rated a food secure nation, but large numbers of households within the country have inadequate access to nutrient-rich diverse foods. The study sought to investigate households’ physical and economic access and availability of food, in relation to local context which influences households’ access to and ability to grow food which may affect the dietary quality. We sought to understand self-reported healthy diets, food insecurity from the perspective of people who experienced it, barriers to household food security and perceptions and feelings on food access as well as strategies households use to cope with food shortages and their perceptions on improving household food security.
- Full Text:
- Date Issued: 2017
- Authors: Chakona, Gamuchirai , Shackleton, Charlie M
- Date: 2017
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/398443 , vital:69412 , xlink:href="https://doi.org/10.1186/s40066-017-0149-x"
- Description: South Africa is rated a food secure nation, but large numbers of households within the country have inadequate access to nutrient-rich diverse foods. The study sought to investigate households’ physical and economic access and availability of food, in relation to local context which influences households’ access to and ability to grow food which may affect the dietary quality. We sought to understand self-reported healthy diets, food insecurity from the perspective of people who experienced it, barriers to household food security and perceptions and feelings on food access as well as strategies households use to cope with food shortages and their perceptions on improving household food security.
- Full Text:
- Date Issued: 2017