Inorganic Chemistry 2: PAC 321
- Authors: Ajibade, P A , Purcell, W
- Date: 2011-02
- Subjects: Chemistry, Inorganic
- Language: English
- Type: Examination paper
- Identifier: vital:17805 , http://hdl.handle.net/10353/d1010357
- Description: Inorganic Chemistry 2: PAC 321, examination February 2011.
- Full Text: false
- Date Issued: 2011-02
- Authors: Ajibade, P A , Purcell, W
- Date: 2011-02
- Subjects: Chemistry, Inorganic
- Language: English
- Type: Examination paper
- Identifier: vital:17805 , http://hdl.handle.net/10353/d1010357
- Description: Inorganic Chemistry 2: PAC 321, examination February 2011.
- Full Text: false
- Date Issued: 2011-02
An evaluation of lightweight classification methods for identifying malicious URLs
- Egan, Shaun P, Irwin, Barry V W
- Authors: Egan, Shaun P , Irwin, Barry V W
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/429839 , vital:72644 , 10.1109/ISSA.2011.6027532
- Description: Recent research has shown that it is possible to identify malicious URLs through lexical analysis of their URL structures alone. This paper intends to explore the effectiveness of these lightweight classification algorithms when working with large real world datasets including lists of malicious URLs obtained from Phishtank as well as largely filtered be-nign URLs obtained from proxy traffic logs. Lightweight algorithms are defined as methods by which URLs are analysed that do not use exter-nal sources of information such as WHOIS lookups, blacklist lookups and content analysis. These parameters include URL length, number of delimiters as well as the number of traversals through the directory structure and are used throughout much of the research in the para-digm of lightweight classification. Methods which include external sources of information are often called fully featured classifications and have been shown to be only slightly more effective than a purely lexical analysis when considering both false-positives and false-negatives. This distinction allows these algorithms to be run client side without the introduction of additional latency, but still providing a high level of accu-racy through the use of modern techniques in training classifiers. Anal-ysis of this type will also be useful in an incident response analysis where large numbers of URLs need to be filtered for potentially mali-cious URLs as an initial step in information gathering as well as end us-er implementations such as browser extensions which could help pro-tect the user from following potentially malicious links. Both AROW and CW classifier update methods will be used as prototype implementa-tions and their effectiveness will be compared to fully featured analysis results. These methods are interesting because they are able to train on any labelled data, including instances in which their prediction is cor-rect, allowing them to build a confidence in specific lexical features. This makes it possible for them to be trained using noisy input data, making them ideal for real world applications such as link filtering and information gathering.
- Full Text:
- Date Issued: 2011
- Authors: Egan, Shaun P , Irwin, Barry V W
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/429839 , vital:72644 , 10.1109/ISSA.2011.6027532
- Description: Recent research has shown that it is possible to identify malicious URLs through lexical analysis of their URL structures alone. This paper intends to explore the effectiveness of these lightweight classification algorithms when working with large real world datasets including lists of malicious URLs obtained from Phishtank as well as largely filtered be-nign URLs obtained from proxy traffic logs. Lightweight algorithms are defined as methods by which URLs are analysed that do not use exter-nal sources of information such as WHOIS lookups, blacklist lookups and content analysis. These parameters include URL length, number of delimiters as well as the number of traversals through the directory structure and are used throughout much of the research in the para-digm of lightweight classification. Methods which include external sources of information are often called fully featured classifications and have been shown to be only slightly more effective than a purely lexical analysis when considering both false-positives and false-negatives. This distinction allows these algorithms to be run client side without the introduction of additional latency, but still providing a high level of accu-racy through the use of modern techniques in training classifiers. Anal-ysis of this type will also be useful in an incident response analysis where large numbers of URLs need to be filtered for potentially mali-cious URLs as an initial step in information gathering as well as end us-er implementations such as browser extensions which could help pro-tect the user from following potentially malicious links. Both AROW and CW classifier update methods will be used as prototype implementa-tions and their effectiveness will be compared to fully featured analysis results. These methods are interesting because they are able to train on any labelled data, including instances in which their prediction is cor-rect, allowing them to build a confidence in specific lexical features. This makes it possible for them to be trained using noisy input data, making them ideal for real world applications such as link filtering and information gathering.
- Full Text:
- Date Issued: 2011
Development of an ICT road map for eservices in rural areas
- Jere, Norbert R, Thinyane, Mamello, Terzoli, Alfredo
- Authors: Jere, Norbert R , Thinyane, Mamello , Terzoli, Alfredo
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/430695 , vital:72709 , https://ieeexplore.ieee.org/abstract/document/6144217
- Description: ICTs, driven by the convergence of computers, telecommunications and traditional media, are crucial for the knowledge-based economy of the future. The rapid technological changes have resulted in different ideas being suggested for the expected ICT applications. As a result, different e-Service applications have being developed as a way to fos-ter ICT developments. However, ICT applications deployed at the mo-ment may not be able to sustain the rural communities in maybe 10 years or more to come. The paper considers the past, analyzes the present and conduct surveys to gain insight into the future. Based on all of this information, the research tries to provide an ICT road map for what is to come. What kind of applications can we develop now to cater for the technological changes, so that the ICT applications developed today would still be compatible with those developed in years to come? The Siyakhula Living Lab (SLL) is used as the case study in this paper and some interviews and literature review are done to get different ide-as on the future of ICTs.
- Full Text:
- Date Issued: 2011
- Authors: Jere, Norbert R , Thinyane, Mamello , Terzoli, Alfredo
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/430695 , vital:72709 , https://ieeexplore.ieee.org/abstract/document/6144217
- Description: ICTs, driven by the convergence of computers, telecommunications and traditional media, are crucial for the knowledge-based economy of the future. The rapid technological changes have resulted in different ideas being suggested for the expected ICT applications. As a result, different e-Service applications have being developed as a way to fos-ter ICT developments. However, ICT applications deployed at the mo-ment may not be able to sustain the rural communities in maybe 10 years or more to come. The paper considers the past, analyzes the present and conduct surveys to gain insight into the future. Based on all of this information, the research tries to provide an ICT road map for what is to come. What kind of applications can we develop now to cater for the technological changes, so that the ICT applications developed today would still be compatible with those developed in years to come? The Siyakhula Living Lab (SLL) is used as the case study in this paper and some interviews and literature review are done to get different ide-as on the future of ICTs.
- Full Text:
- Date Issued: 2011
Publicising chemistry in a multicultural society through chemistry outreach
- Harrison, T G, Shallcross, D E, Norman, N C, Sewry, Joyce D, Davies-Coleman, Michael T
- Authors: Harrison, T G , Shallcross, D E , Norman, N C , Sewry, Joyce D , Davies-Coleman, Michael T
- Date: 2011
- Language: English
- Type: Article
- Identifier: vital:6573 , http://hdl.handle.net/10962/d1004136
- Description: Given the emphasis in Higher Education on community engagement in South Africa and the importance of international collaboration, we discuss a joint approach to chemistry outreach in two countries on two continents with widely differing target school audiences. We describe the history of the partnership between the chemistry departments at Rhodes University and the University of Bristol and provide an outline of the chemistry content of their outreach initiatives, the modes of delivery, the advantages to both departments and their students for involvement in various levels of outreach, the challenges they still face and additional opportunities that such work facilitated. The lecture demonstration 'A Pollutant's Tale' was presented to thousands of learners all over the world, including learners at resource-deprived schools in South Africa. Challenges to extend outreach activities in South Africa include long travelling distances, as well as a lack of facilities (such as school halls and electricity) at schools. Outreach activities not only impacted on the target audience of young learners, they also impacted upon the postgraduate and other chemistry students taking part in these initiatives. This collaboration strengthened both institutions and their outreach work and may also lead to chemistry research collaborations between the academics involved.
- Full Text:
- Date Issued: 2011
- Authors: Harrison, T G , Shallcross, D E , Norman, N C , Sewry, Joyce D , Davies-Coleman, Michael T
- Date: 2011
- Language: English
- Type: Article
- Identifier: vital:6573 , http://hdl.handle.net/10962/d1004136
- Description: Given the emphasis in Higher Education on community engagement in South Africa and the importance of international collaboration, we discuss a joint approach to chemistry outreach in two countries on two continents with widely differing target school audiences. We describe the history of the partnership between the chemistry departments at Rhodes University and the University of Bristol and provide an outline of the chemistry content of their outreach initiatives, the modes of delivery, the advantages to both departments and their students for involvement in various levels of outreach, the challenges they still face and additional opportunities that such work facilitated. The lecture demonstration 'A Pollutant's Tale' was presented to thousands of learners all over the world, including learners at resource-deprived schools in South Africa. Challenges to extend outreach activities in South Africa include long travelling distances, as well as a lack of facilities (such as school halls and electricity) at schools. Outreach activities not only impacted on the target audience of young learners, they also impacted upon the postgraduate and other chemistry students taking part in these initiatives. This collaboration strengthened both institutions and their outreach work and may also lead to chemistry research collaborations between the academics involved.
- Full Text:
- Date Issued: 2011
SOA driven architectures for service creation through enablers in an IMS testbed
- Tsietsi, Mosiuoa, Terzoli, Alfredo, Wells,George C
- Authors: Tsietsi, Mosiuoa , Terzoli, Alfredo , Wells,George C
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/430726 , vital:72711 , https://ieeexplore.ieee.org/abstract/document/6144230
- Description: Standards development organisations have long been in agreement that the most appropriate and cost effective way of developing services for the IP Multimedia Subsystem (IMS) is through the use - and re-use - of service capabilities, which are the building blocks for developing complex services. IMS specifications provide a theoretical framework for how service capabilities can be aggregated into large service appli-cations. However, there is little evidence that mainstream IMS service development is capability-based, and many services are still designed in a monolithic way, with no re-use of existing functionality. Telecom-munication networks are well positioned to stimulate the Internet ser-vices market by exposing these service enablers to third parties. In this paper, we marry the two issues by defining an extended IMS service layer (EISL) that provides a service broker that is the central agent in both service interaction management and the execution of external re-quests from third parties. A prototypical implementation of the service broker is described that was developed using a converged SIP servlet container, and a discussion is also provided that details how third party developers could use HTTP APIs to interact with a service broker in or-der to gain access to network capabilities.
- Full Text:
- Date Issued: 2011
- Authors: Tsietsi, Mosiuoa , Terzoli, Alfredo , Wells,George C
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/430726 , vital:72711 , https://ieeexplore.ieee.org/abstract/document/6144230
- Description: Standards development organisations have long been in agreement that the most appropriate and cost effective way of developing services for the IP Multimedia Subsystem (IMS) is through the use - and re-use - of service capabilities, which are the building blocks for developing complex services. IMS specifications provide a theoretical framework for how service capabilities can be aggregated into large service appli-cations. However, there is little evidence that mainstream IMS service development is capability-based, and many services are still designed in a monolithic way, with no re-use of existing functionality. Telecom-munication networks are well positioned to stimulate the Internet ser-vices market by exposing these service enablers to third parties. In this paper, we marry the two issues by defining an extended IMS service layer (EISL) that provides a service broker that is the central agent in both service interaction management and the execution of external re-quests from third parties. A prototypical implementation of the service broker is described that was developed using a converged SIP servlet container, and a discussion is also provided that details how third party developers could use HTTP APIs to interact with a service broker in or-der to gain access to network capabilities.
- Full Text:
- Date Issued: 2011
Academic Practices & Reasoning: APR 122
- Authors: Scott, R , Blatchford, M
- Date: 2011-01
- Language: English
- Type: Examination paper
- Identifier: vital:18248 , http://hdl.handle.net/10353/d1011242
- Description: Academic Practices and Reasoning: APR 122, supplementary examination Jan/Feb 2012.
- Full Text: false
- Date Issued: 2011-01
- Authors: Scott, R , Blatchford, M
- Date: 2011-01
- Language: English
- Type: Examination paper
- Identifier: vital:18248 , http://hdl.handle.net/10353/d1011242
- Description: Academic Practices and Reasoning: APR 122, supplementary examination Jan/Feb 2012.
- Full Text: false
- Date Issued: 2011-01
Advanced Personnel Psychology: IPS 602
- Authors: Nel, P , Van der Walt, R M
- Date: 2011-01
- Subjects: Psychology, Industrial
- Language: English
- Type: Examination paper
- Identifier: vital:17511 , http://hdl.handle.net/10353/d1010982
- Description: Advanced Personnel Psychology: IPS 602, special examination January 2011.
- Full Text: false
- Date Issued: 2011-01
- Authors: Nel, P , Van der Walt, R M
- Date: 2011-01
- Subjects: Psychology, Industrial
- Language: English
- Type: Examination paper
- Identifier: vital:17511 , http://hdl.handle.net/10353/d1010982
- Description: Advanced Personnel Psychology: IPS 602, special examination January 2011.
- Full Text: false
- Date Issued: 2011-01
Basic Chemistry: PAC 121F
- Authors: Soyaya, S M , Mbentse, J Z
- Date: 2011-01
- Language: English
- Type: Examination paper
- Identifier: vital:17812 , http://hdl.handle.net/10353/d1010364
- Description: Basic Chemistry: PAC 121F, supplementary examination January 2011.
- Full Text: false
- Date Issued: 2011-01
- Authors: Soyaya, S M , Mbentse, J Z
- Date: 2011-01
- Language: English
- Type: Examination paper
- Identifier: vital:17812 , http://hdl.handle.net/10353/d1010364
- Description: Basic Chemistry: PAC 121F, supplementary examination January 2011.
- Full Text: false
- Date Issued: 2011-01
Computer Networks: CSC 323
- Authors: Sibanda, K , Vogts, D
- Date: 2011-01
- Language: English
- Type: Examination paper
- Identifier: vital:17757 , http://hdl.handle.net/10353/d1010290
- Description: Computer Networks: CSC 323, Supplementary examination January/February 2011.
- Full Text: false
- Date Issued: 2011-01
- Authors: Sibanda, K , Vogts, D
- Date: 2011-01
- Language: English
- Type: Examination paper
- Identifier: vital:17757 , http://hdl.handle.net/10353/d1010290
- Description: Computer Networks: CSC 323, Supplementary examination January/February 2011.
- Full Text: false
- Date Issued: 2011-01
Elements of Crop Production: AGC 211
- Owusu-Aduomi, O K, Mutengwa, C
- Authors: Owusu-Aduomi, O K , Mutengwa, C
- Date: 2011-01
- Subjects: Crop Science
- Language: English
- Type: Examination paper
- Identifier: vital:17629 , http://hdl.handle.net/10353/d1010006
- Description: Elements of Crop Production: AGC 211, supplementary examination January 2011.
- Full Text: false
- Date Issued: 2011-01
- Authors: Owusu-Aduomi, O K , Mutengwa, C
- Date: 2011-01
- Subjects: Crop Science
- Language: English
- Type: Examination paper
- Identifier: vital:17629 , http://hdl.handle.net/10353/d1010006
- Description: Elements of Crop Production: AGC 211, supplementary examination January 2011.
- Full Text: false
- Date Issued: 2011-01
Music: MUC 221
- Lloyd, G, Ncozana, J, Bleibinger, B
- Authors: Lloyd, G , Ncozana, J , Bleibinger, B
- Date: 2011-01
- Subjects: Music
- Language: English
- Type: Examination paper
- Identifier: vital:18104 , http://hdl.handle.net/10353/d1010855
- Description: Music: MUC 221, supplementary examination paper January 2011.
- Full Text: false
- Date Issued: 2011-01
- Authors: Lloyd, G , Ncozana, J , Bleibinger, B
- Date: 2011-01
- Subjects: Music
- Language: English
- Type: Examination paper
- Identifier: vital:18104 , http://hdl.handle.net/10353/d1010855
- Description: Music: MUC 221, supplementary examination paper January 2011.
- Full Text: false
- Date Issued: 2011-01
Physical Chemistry: PAC 324
- Authors: Sadimenko, A , Purcell, W
- Date: 2011-01
- Language: English
- Type: Examination paper
- Identifier: vital:17823 , http://hdl.handle.net/10353/d1010376
- Description: Physical Chemistry: PAC 324, supplementary examination January 2012.
- Full Text: false
- Date Issued: 2011-01
- Authors: Sadimenko, A , Purcell, W
- Date: 2011-01
- Language: English
- Type: Examination paper
- Identifier: vital:17823 , http://hdl.handle.net/10353/d1010376
- Description: Physical Chemistry: PAC 324, supplementary examination January 2012.
- Full Text: false
- Date Issued: 2011-01
Computer Graphics: CSC 521
- Authors: Chadwick, J , Vogts, D
- Date: 2010-11
- Language: English
- Type: Examination paper
- Identifier: vital:17783 , http://hdl.handle.net/10353/d1010323
- Description: Computer Graphics: CSC 521, homours examination November 2010.
- Full Text: false
- Date Issued: 2010-11
- Authors: Chadwick, J , Vogts, D
- Date: 2010-11
- Language: English
- Type: Examination paper
- Identifier: vital:17783 , http://hdl.handle.net/10353/d1010323
- Description: Computer Graphics: CSC 521, homours examination November 2010.
- Full Text: false
- Date Issued: 2010-11
GIS for Decision Support: GIS 503
Organic Chemistry 2: PAC 223
- Authors: Manene, N C , Tichagwa, L
- Date: 2010-11
- Language: English
- Type: Examination paper
- Identifier: vital:17842 , http://hdl.handle.net/10353/d1010451
- Description: Organic Chemistry 2: PAC 223, degree examination November 2010.
- Full Text: false
- Date Issued: 2010-11
- Authors: Manene, N C , Tichagwa, L
- Date: 2010-11
- Language: English
- Type: Examination paper
- Identifier: vital:17842 , http://hdl.handle.net/10353/d1010451
- Description: Organic Chemistry 2: PAC 223, degree examination November 2010.
- Full Text: false
- Date Issued: 2010-11
Technology for Educators: EDT 221
- Vye, Z, Tyilo, P N
- Authors: Vye, Z , Tyilo, P N
- Date: 2010-11
- Subjects: Education
- Language: English
- Type: Examination paper
- Identifier: vital:17346 , http://hdl.handle.net/10353/d1010208
- Description: Examination on Technology for Educators: EDT 221, November 2010.
- Full Text: false
- Date Issued: 2010-11
- Authors: Vye, Z , Tyilo, P N
- Date: 2010-11
- Subjects: Education
- Language: English
- Type: Examination paper
- Identifier: vital:17346 , http://hdl.handle.net/10353/d1010208
- Description: Examination on Technology for Educators: EDT 221, November 2010.
- Full Text: false
- Date Issued: 2010-11
Commercial Law 2: LCM 221
- Authors: Stewart, S T , Lubisi, N
- Date: 2010-10
- Subjects: Commercial law
- Language: English
- Type: Examination paper
- Identifier: vital:17401 , http://hdl.handle.net/10353/d1009875
- Description: Commercial Law 2: LCM 221, October/November Examination Paper 2010
- Full Text: false
- Date Issued: 2010-10
- Authors: Stewart, S T , Lubisi, N
- Date: 2010-10
- Subjects: Commercial law
- Language: English
- Type: Examination paper
- Identifier: vital:17401 , http://hdl.handle.net/10353/d1009875
- Description: Commercial Law 2: LCM 221, October/November Examination Paper 2010
- Full Text: false
- Date Issued: 2010-10
Plant Cell Structure & Metabolism/Anatomy/Genetics: BOT 111
- Buwa, L, Magwa, M L, Mhinana, Z M
- Authors: Buwa, L , Magwa, M L , Mhinana, Z M
- Date: 2010-08
- Subjects: Botany
- Language: English
- Type: Examination paper
- Identifier: vital:17729 , http://hdl.handle.net/10353/d1010177
- Description: Plant Cell Structure & Metabolism/Anatomy/Genetics: BOT 111, supplementary examination August 2010.
- Full Text: false
- Date Issued: 2010-08
- Authors: Buwa, L , Magwa, M L , Mhinana, Z M
- Date: 2010-08
- Subjects: Botany
- Language: English
- Type: Examination paper
- Identifier: vital:17729 , http://hdl.handle.net/10353/d1010177
- Description: Plant Cell Structure & Metabolism/Anatomy/Genetics: BOT 111, supplementary examination August 2010.
- Full Text: false
- Date Issued: 2010-08
History of Education: EDB 411
- Authors: Botha, E K , Mapasa, E T
- Date: 2010-07
- Subjects: Education
- Language: English
- Type: Examination paper
- Identifier: vital:17304 , http://hdl.handle.net/10353/d1010149
- Description: Supplementary examination on History of Education: EDB 411 July 2010.
- Full Text: false
- Date Issued: 2010-07
- Authors: Botha, E K , Mapasa, E T
- Date: 2010-07
- Subjects: Education
- Language: English
- Type: Examination paper
- Identifier: vital:17304 , http://hdl.handle.net/10353/d1010149
- Description: Supplementary examination on History of Education: EDB 411 July 2010.
- Full Text: false
- Date Issued: 2010-07
Organic Chemistry 1: PAC 213
- Authors: Manane, N C , Tichagwa, L
- Date: 2010-07
- Language: English
- Type: Examination paper
- Identifier: vital:17826 , http://hdl.handle.net/10353/d1010380
- Description: Organic Chemistry 1: PAC 213, supplementary examination July 2010.
- Full Text: false
- Date Issued: 2010-07
- Authors: Manane, N C , Tichagwa, L
- Date: 2010-07
- Language: English
- Type: Examination paper
- Identifier: vital:17826 , http://hdl.handle.net/10353/d1010380
- Description: Organic Chemistry 1: PAC 213, supplementary examination July 2010.
- Full Text: false
- Date Issued: 2010-07