| 1. |
- Gamukama, Elly Amani, et al.
(författare)
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A framework for evaluating efficiency - Fairness tradeoff in IP networks in context of development
- 2009
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Ingår i: 2009 9th International Symposium on Communications and Information Technology, ISCIT 2009. - : IEEE Computer Society. - 9781424445219 - 9781424445226 ; , s. 507-512
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Konferensbidrag (refereegranskat)abstract
- Efficiency and fairness are main objectives in any system design and many choices in life are made based on their tradeoffs. In this paper we introduce a framework for the evaluation of efficiency-fairness tradeoffs that would provide a sound basis for network providers and social planners to provide or plan for an equitable access to the Internet to a diversity of users with different needs and financial possibilities representing mainly developing regions and emerging economies. Control approaches are introduced to address the upraising distortion of fairness concept in IP based networks by using the (α, β) - fairness concept to establish the upper and lower fairness bounds within which the social welfare and the network efficiency are maximized. Although the use of the (α, β) - fairness concept compromises to a certain extent the degree for fairness in resource capacity allocation, it does not jeopardize the utilities for end users or the network provider. Fairness in this context mainly parameterizes tradeoff between services equality and throughput maximization.
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| 2. |
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| 3. |
- Milenkovski, Aleksandar, et al.
(författare)
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Statistical framework for ns-3 : terminating simulation and regression analysis
- 2014
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Ingår i: World Journal on Modeling and Simulation. - 1746-7233. ; 10:2, s. 116-125
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Tidskriftsartikel (refereegranskat)abstract
- The ns-3 simulator is constantly gaining popularity. It plays a central role in many recent research experiments. The accuracy of the reported simulation results of these experiments is an important concern. Thus, the support in ns-3 for simulation methodologies which guarantee the accuracy of these results is a necessity. Also, the simulation results are affected by numerous scenario parameters. The correlation between the results and the simulation parameters is a significant point of interest in many experiments. In this paper, we present a ns-3 statistical framework. It enables calculation of statistically accurate simulation results by applying the terminating simulation methodology. It features simultaneous execution of simulation scenarios in multi-processor and distributed environments. Also, we integrate support for regression analysis procedures. The proposed framework supports linear and polynomial regression analysis models.We consider simulation results as dependent variables and simulation parameters as independent variables. Regression analysis enables identification of simulation scenario parameters which are significantly correlated to given simulation results. Once a valid regression model is found, it is possible to estimatively predict metric values based on simulation parameter values. This may result in substantially reduced time and effort spent on simulation experimentation.
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| 4. |
- Mondlane, Avelino, et al.
(författare)
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E-Governance and Natural Hazards in Mozambique : A Challenge for Backasting Method Used for Flood Risk Management Strategies
- 2014
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Ingår i: Emerging Issues And Prospects In African E-Government. - : IGI Global. - 9781466662964 - 9781466662971 - 1466662964 ; , s. 253-268
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Strategic planning is a decisive process toward sustainable development for any organization. Mozambique has developed many tools toward good governance, among which Poverty Alleviation Strategy Paper (PARPA) is an umbrella. PARPA includes different key decisive segments of society, particularly the Information and Communication Technologies (ICTs) as the pool for development. This chapter investigates to what extent e-Governance, particularly the development of strategies based on ICTs, can contribute to minimize the impact of floods at local governments by addressing best practice and decision-making process. The authors address backcasting methodology as an approach to consider in a participatory strategic planning for long-term decision-making processes. They use Chókwe District as a showcase where e-governance has an impact in mitigating and preventing the impact of floods.
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| 5. |
- Ndiwalana, Ali, et al.
(författare)
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Mobile Payments: A Comparison between Philippine and Ugandan Contexts
- 2008
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Ingår i: IST-Africa 2008 Conference Proceedings. - Ireland : International Information Management Corporation Limited. - 9781905824076
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Konferensbidrag (refereegranskat)abstract
- This paper maintains that mobile phone payments present a significant opportunity to integrate more users within Uganda's financial system. Besides enabling services that can improve the performance of small businesses, mobile payments afford an opportunity to integrate more users within the traditional banking system at a reasonable cost. In order to evolve a successful model and realise these benefits, Uganda can learn from the Philippines, a developing country with arguably the most successful and widespread use of mobile payments in the world. Action areas include reviewing the national policy and legal environment, building capacity and collaboration amongst multiple regulatory agencies, and the need to be accommodative of as many stakeholders as possible. This will create a truly national system that can leverage the projected growth of the mobile phone market and bring benefits to the general population.
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| 6. |
- Popov, Oliver
(författare)
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From Digital Divide to Digital Unite
- 2003
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Ingår i: NATO ANW: Policy Issues for NRENs. - Varna, Bulgaria : NATO Computer and Systems Sciences.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 7. |
- Iqbal, Asif, et al.
(författare)
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Sandboxing : aid in digital forensic research
- 2015
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Ingår i: Proceedings of the 2015 Information Security Curriculum Development Conference. - New York, NY, USA : ACM Press. - 9781450340496 ; , s. 1-6
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Konferensbidrag (refereegranskat)abstract
- Finding digital forensic artifacts in the ever changing and complex digital world can be a daunting task for any digital forensic investigator. Familiar tools, such as Sandboxie and Symantec Workspace virtualization used as an aid in forensic investigations may significantly decrease the learning curve. The value of sandboxing for digital forensic investigations is demonstrated here through the research via the appropriate comparative analysis.
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| 8. |
- Aranda, Laura, et al.
(författare)
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A Conceptual Model of an Intelligent Platform for Security Risk Assessment in SMEs
- 2019
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Ingår i: 2019 IEEE 13th International Conference on Application of Information and Communication Technologies (AICT). - : IEEE. - 9781728139036 - 9781728139029 ; , s. 181-188
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Konferensbidrag (refereegranskat)abstract
- SMEs are increasingly targeted by cyberattacks and usually less in control of their Information Security Management System than larger organizations due to a lack of resources. Risk assessment can help them to determine which changes are needed bearing in mind their constraints. However, common frameworks for risk assessments are more suitable for large organizations. Some of them have been designed specifically for SMEs but still target an audience of information security experts and are considered as time-consuming by SMEs. This article aims at tackling those issues by introducing a conceptual model of an Intelligent Platform for supporting SMEs in security risk assessment process. The design research method was used to develop a model taking into account the inputs from relevant stakeholders collected via interviews. The model was validated and improved with case studies where quick security risk assessments in three different SMEs have been performed following the activities that the proposed model is supposed to perform.
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| 9. |
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| 10. |
- Popov, Oliver, et al.
(författare)
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Co-existence of Responsive and Unresponsive Flows in Heterogeneous Networks
- 2007
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Ingår i: Research in Informatics and Information Society Technologies. - 9789549526424 ; , s. 115-130
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Konferensbidrag (refereegranskat)abstract
- The reconciliation of socially responsible (TCP) with irresponsible (UDP) network flows is the goal, while the idea behind the solution is to maintain the existing congestion management mechanisms for the former and to use the mobile agent paradigm to monitor and control the later ones. The comprehensive solution has been termed as Combined Model for Congestion Control (CM4CC) and elaborated in several articles. As responsive protocol, TCP controls the sending rates whenever there is an appearance of congestion. If a problem with UDP occurs, the model that incorporates seven different types of mobile agents takes over the sending rates of unresponsive flows and tames them down. The reaction is based on the information collected by monitoring agents that trigger the creation of control agents. Three types of agents are always present in the network, while the rest are created on as needed basis. CM4CC has been verified through a number of different network configurations and scenarios using the Optimized Network Engineering Tool (OPNET) simulation environment. The results suggest an encouraging solution to the problem of coexistence of responsive and non-responsive flows. It is crucial to the stability and performance of Internet today, where so many different applications and services run simultaneously.
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