A subsidy driven decision procedure to mitigate the tragedy of the commons and anti-commons
- Sumbwanyambe, M., Nel, A. L.
- Authors: Sumbwanyambe, M. , Nel, A. L.
- Date: 2012
- Subjects: Telecommunication subsidies , Telecommunications - Quality of service
- Type: Article
- Identifier: uj:6277 , ISSN 2078-0966 , http://hdl.handle.net/10210/9715
- Description: Abstract—One of the main aims of telecommunication subsidies in developing countries is to extend the information and communication services to the information “have nots” through subsidized communication services. However, subsidies may have an impact on network resource utilization, quality of service and the amount of revenue generated. For example, subsidies may lead to low Quality of Service (QoS) and high resource utilization while in some instances unsubsidized services may lead to high quality of services and low utilization of resources. This see-saw effect may eventually lead to market failure and it may, now and then, destroy market efficiency. This phenomenon calls for a combined study, in which the relationship between subsidy, price, QoS and resource utilization is investigated. In this paper, the impact of subsidies on quality of service and resource utilization in multitier communities is investigated. We try to find a middle ground between implementation of subsidy policy and its effects on QoS and resource utilization in a network.
- Full Text:
- Authors: Sumbwanyambe, M. , Nel, A. L.
- Date: 2012
- Subjects: Telecommunication subsidies , Telecommunications - Quality of service
- Type: Article
- Identifier: uj:6277 , ISSN 2078-0966 , http://hdl.handle.net/10210/9715
- Description: Abstract—One of the main aims of telecommunication subsidies in developing countries is to extend the information and communication services to the information “have nots” through subsidized communication services. However, subsidies may have an impact on network resource utilization, quality of service and the amount of revenue generated. For example, subsidies may lead to low Quality of Service (QoS) and high resource utilization while in some instances unsubsidized services may lead to high quality of services and low utilization of resources. This see-saw effect may eventually lead to market failure and it may, now and then, destroy market efficiency. This phenomenon calls for a combined study, in which the relationship between subsidy, price, QoS and resource utilization is investigated. In this paper, the impact of subsidies on quality of service and resource utilization in multitier communities is investigated. We try to find a middle ground between implementation of subsidy policy and its effects on QoS and resource utilization in a network.
- Full Text:
A subsidy driven decision procedure to mitigate the tragedy of the commons and anti-commons
- Sumbwanyambe, M., Nel, A. L.
- Authors: Sumbwanyambe, M. , Nel, A. L.
- Date: 2012
- Subjects: Pricing policy , Quality of service , Information technology - Developing countries , Telecommunications - Developing countries , Subsidies
- Identifier: uj:6272 , ISSN 2078-0966 , http://hdl.handle.net/10210/8910
- Description: One of the main aims of telecommunication subsidies in developing countries is to extend the information and communication services to the information “have nots” through subsidized communication services. However, subsidies may have an impact on network resource utilization, quality of service and the amount of revenue generated. For example, subsidies may lead to low Quality of Service (QoS) and high resource utilization while in some instances unsubsidized services may lead to high quality of services and low utilization of resources. This see-saw effect may eventually lead to market failure and it may, now and then, destroy market efficiency. This phenomenon calls for a combined study, in which the relationship between subsidy, price, QoS and resource utilization is investigated. In this paper, the impact of subsidies on quality of service and resource utilization in multitier communities is investigated. We try to find a middle ground between implementation of subsidy policy and its effects on QoS and resource utilization in a network.
- Full Text:
- Authors: Sumbwanyambe, M. , Nel, A. L.
- Date: 2012
- Subjects: Pricing policy , Quality of service , Information technology - Developing countries , Telecommunications - Developing countries , Subsidies
- Identifier: uj:6272 , ISSN 2078-0966 , http://hdl.handle.net/10210/8910
- Description: One of the main aims of telecommunication subsidies in developing countries is to extend the information and communication services to the information “have nots” through subsidized communication services. However, subsidies may have an impact on network resource utilization, quality of service and the amount of revenue generated. For example, subsidies may lead to low Quality of Service (QoS) and high resource utilization while in some instances unsubsidized services may lead to high quality of services and low utilization of resources. This see-saw effect may eventually lead to market failure and it may, now and then, destroy market efficiency. This phenomenon calls for a combined study, in which the relationship between subsidy, price, QoS and resource utilization is investigated. In this paper, the impact of subsidies on quality of service and resource utilization in multitier communities is investigated. We try to find a middle ground between implementation of subsidy policy and its effects on QoS and resource utilization in a network.
- Full Text:
Ethics assessment via game play?
- Nel, A. L., Carroll, Johnson
- Authors: Nel, A. L. , Carroll, Johnson
- Date: 2017
- Subjects: Ethics research , Role playing games , Gamification
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/236085 , uj:24152 , Citation: Nel, A.L. & Carroll, J. 2017. Ethics assessment via game play?
- Description: Abstract: In a previous paper the ethical nature of academic staff at the University of Johannesburg (UJ) was evaluated. Since engineering education research is flourishing world-wide a serious question was raised about staff adherence to basic ethical standards. An internal research programme was launched to evaluate staff’s ethical orientation using a survey based methodology. The results indicated that a significant percentage acted in ethically problematic ways. As a consequence the idea of using a role playing game (RPG) was mooted to further investigate academic staff’s situational ethics. This paper discusses the proposed game playing device that was designed as a manner of investigating the staff’s understanding of engineering education research ethics. This paper reviews basic material on nature of play and in particular ethical role play in RPGs and analyses the manner in which an RPG would have to be designed to ensure reliable data collection of the staff’s ethical standards when applied to educational research. From the basic review of game playing ethics and the necessary design elements it was clear that it would not be possible to develop such a measurement device. It is an open question whether any form of situated ethics can be evaluated or taught using a closed form RPG.
- Full Text:
- Authors: Nel, A. L. , Carroll, Johnson
- Date: 2017
- Subjects: Ethics research , Role playing games , Gamification
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/236085 , uj:24152 , Citation: Nel, A.L. & Carroll, J. 2017. Ethics assessment via game play?
- Description: Abstract: In a previous paper the ethical nature of academic staff at the University of Johannesburg (UJ) was evaluated. Since engineering education research is flourishing world-wide a serious question was raised about staff adherence to basic ethical standards. An internal research programme was launched to evaluate staff’s ethical orientation using a survey based methodology. The results indicated that a significant percentage acted in ethically problematic ways. As a consequence the idea of using a role playing game (RPG) was mooted to further investigate academic staff’s situational ethics. This paper discusses the proposed game playing device that was designed as a manner of investigating the staff’s understanding of engineering education research ethics. This paper reviews basic material on nature of play and in particular ethical role play in RPGs and analyses the manner in which an RPG would have to be designed to ensure reliable data collection of the staff’s ethical standards when applied to educational research. From the basic review of game playing ethics and the necessary design elements it was clear that it would not be possible to develop such a measurement device. It is an open question whether any form of situated ethics can be evaluated or taught using a closed form RPG.
- Full Text:
Polar rectification of stereo images implemented on a GPU
- Authors: Nel, A. L.
- Date: 2014
- Subjects: Polar rectification , Image processing , Graphics processing unit , Stereo image pairs
- Type: Article
- Identifier: uj:4933 , http://hdl.handle.net/10210/13033
- Description: Polar rectification of stereo image pairs is reviewed and the implementation on a graphics processing unit (GPU) discussed. The rectification process requires the fundamental matrix as the only parameter and its performance will be tested using images with varying SNR. The computational time for the process as implemented will also be discussed.
- Full Text:
- Authors: Nel, A. L.
- Date: 2014
- Subjects: Polar rectification , Image processing , Graphics processing unit , Stereo image pairs
- Type: Article
- Identifier: uj:4933 , http://hdl.handle.net/10210/13033
- Description: Polar rectification of stereo image pairs is reviewed and the implementation on a graphics processing unit (GPU) discussed. The rectification process requires the fundamental matrix as the only parameter and its performance will be tested using images with varying SNR. The computational time for the process as implemented will also be discussed.
- Full Text:
Retention of engineering students
- Steenkamp, H., Nel, A. L., Carroll, J.
- Authors: Steenkamp, H. , Nel, A. L. , Carroll, J.
- Date: 2017
- Subjects: Retention , Characteristics , Models
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/236093 , uj:24153 , Citation: Steenkamp, H., Nel, A.L. & Carroll, J. 2017. Retention of engineering students.
- Description: Abstract: Retention of engineering students is an international concern. Most countries report a shortage of engineers. By increasing the number of retained engineering students it is potentially possible to increase the number of engineering graduates. The purpose of this article is to identify and analyse what retention research has been done in the past to avoid unnecessary duplication. Although duplication may bring valuable new information, progress in this field has been slow. Therefore, the focus is on facilitating progress rather than seeking more accurate results. The three main themes identified in literature are: the individual’s internal and external characteristics that affect retention, the models that describe retention, conceptual and predictive, and the interventions attempted to improve retention. Further research into methods for improving student retention is certainly justified since in spite of existing research most institutions still struggle to retain engineering students.
- Full Text:
- Authors: Steenkamp, H. , Nel, A. L. , Carroll, J.
- Date: 2017
- Subjects: Retention , Characteristics , Models
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/236093 , uj:24153 , Citation: Steenkamp, H., Nel, A.L. & Carroll, J. 2017. Retention of engineering students.
- Description: Abstract: Retention of engineering students is an international concern. Most countries report a shortage of engineers. By increasing the number of retained engineering students it is potentially possible to increase the number of engineering graduates. The purpose of this article is to identify and analyse what retention research has been done in the past to avoid unnecessary duplication. Although duplication may bring valuable new information, progress in this field has been slow. Therefore, the focus is on facilitating progress rather than seeking more accurate results. The three main themes identified in literature are: the individual’s internal and external characteristics that affect retention, the models that describe retention, conceptual and predictive, and the interventions attempted to improve retention. Further research into methods for improving student retention is certainly justified since in spite of existing research most institutions still struggle to retain engineering students.
- Full Text:
Subsidy and revenue maximization in developing countries
- Sumbwanyambe, Mbuyu, Nel, A. L.
- Authors: Sumbwanyambe, Mbuyu , Nel, A. L.
- Date: 2012
- Subjects: Information technology , Subsidized communication services
- Type: Article
- Identifier: uj:6281 , ISSN 2078-0966 , http://hdl.handle.net/10210/9884
- Description: Developing countries have embarked on the promotion of “ICT access for all” through subsidized Information and Communication Technologies (ICTs), especially in underserviced areas of such countries. The main aim of the “ICT access for all” is to extend the communication services to the large areas of underserviced regions through subsidized communication services. In some instances, subsidies may lead to high ICT penetration and high resource utilization while in some instances unsubsidized services may lead to low utilization of resources and low ICT penetration, which may eventually lead to market failure and destroy market efficiency. With explicitly defined objectives, regarding subsidy policy, however, developing countries always fall short on the implementation of such subsidy policy due to economic reasons and unrealistic subsidy driven pricing models. In this paper we investigate the impact of subsidy driven pricing model on resource utilization and revenue maximization in a developing country. In this paper we try to find a middle ground between promoting “ICT access for all” (given a subsidy and diverse income variations between the groups) and resource utilization in a network.
- Full Text:
- Authors: Sumbwanyambe, Mbuyu , Nel, A. L.
- Date: 2012
- Subjects: Information technology , Subsidized communication services
- Type: Article
- Identifier: uj:6281 , ISSN 2078-0966 , http://hdl.handle.net/10210/9884
- Description: Developing countries have embarked on the promotion of “ICT access for all” through subsidized Information and Communication Technologies (ICTs), especially in underserviced areas of such countries. The main aim of the “ICT access for all” is to extend the communication services to the large areas of underserviced regions through subsidized communication services. In some instances, subsidies may lead to high ICT penetration and high resource utilization while in some instances unsubsidized services may lead to low utilization of resources and low ICT penetration, which may eventually lead to market failure and destroy market efficiency. With explicitly defined objectives, regarding subsidy policy, however, developing countries always fall short on the implementation of such subsidy policy due to economic reasons and unrealistic subsidy driven pricing models. In this paper we investigate the impact of subsidy driven pricing model on resource utilization and revenue maximization in a developing country. In this paper we try to find a middle ground between promoting “ICT access for all” (given a subsidy and diverse income variations between the groups) and resource utilization in a network.
- Full Text:
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