1.
Gamukama, Elly Amani, et al.
(author)
A framework for evaluating efficiency - Fairness tradeoff in IP networks in context of development
2009
In: 2009 9th International Symposium on Communications and Information Technology, ISCIT 2009. - : IEEE Computer Society. - 9781424445219 - 9781424445226 ; , s. 507-512
Conference paper (peer-reviewed) 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.
2.
3.
Milenkovski, Aleksandar, et al.
(author)
Statistical framework for ns-3 : terminating simulation and regression analysis
2014
In: World Journal on Modeling and Simulation. - 1746-7233. ; 10:2, s. 116-125
Journal article (peer-reviewed) 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.
4.
Anobah, Maxwell, et al.
(author)
Testing Framework for Mobile Device Forensics Tools
2014
In: The Journal of Digital Forensics, Security and Law. - Farmville : Association of Digital Forensics, Security and Law. - 1558-7215 .- 1558-7223. ; 9:3, s. 221-234
Journal article (peer-reviewed) abstract
The proliferation of mobile communication and computing devices, in particular smart mobile phones, is almost paralleled with the increasing number of mobile device forensics tools in the market. Each mobile forensics tool vendor, on one hand claims to have a tool that is best in terms of performance, while on the other hand each tool vendor seems to be using different standards for testing their tools and thereby defining what support means differently. To overcome this problem, a testing framework based on a series of tests ranging from basic forensics tasks such as file system reconstruction up to more complex ones countering anti-forensic techniques is proposed. The framework, which is an extension of an existing effort done in 2010, prescribes a method to clearly circumscribe the term support into precise levels. It also gives an idea of the standard to be developed and accepted by the forensic community that will make it easier for forensics investigators to quickly select the most appropriate tool for a particular mobile device.
5.
Chemane, Lourino, et al.
(author)
Government Network and Information Security MCDM Framework for the Selection of Security Mechanisms :
2005
In: Proceedings of CNIS 2005. - Phoenix, USA : Acta Press.
Conference paper (peer-reviewed) abstract
The establishment of Virtual Private Networks (VPNs), Intranets and Internet access channels by Governments raises the need of making sure that only authorized people access the Government VPN resources. The large base of network security mechanisms and VPN implementation alternatives available makes it difficult to select the “optimal” security mechanisms or controls to be used in order to ensure the required or defined level of security for a specific VPN. This paper addresses the security mechanisms selection problem by proposing a MCDM model for structuring the VPN selection decision problem. Data collected from the Government Network Project (GovNet) being implemented in Mozambique was used to support both the development and validation of the Model.
6.
7.
Chemane, Lourino, 1966-
(author)
ICT Platform Integration - MCDM Based Framework for the Establishment of Value Network : Case Study: Mozambique Government Electronic Network (GovNet)
2011
Doctoral thesis (other academic/artistic) abstract
The selection of ICT service providers are among many of the challenges in building networks (intranets and extensions to the Internet) due to the high investment on equipment (CAPEX) and on operational costs (OPEX). This thesis proposes a Multi-Criteria Decision Method based decision support framework via the deployment of the Analytical Hierarchy Process method that can be used to improve selection and evaluation practices. The work deals explicitly with the role of ICT in supporting the corporate mission, and goals, in building the organization value network. It helps also in planning and defining the access to the Internet and strategies for making critical ICT related decisions. A specific study, The Government Electronic Network Project in Mozambique, has been used as a use case for the developed model and for validating the framework. The thesis also covers aspects related to the broader eGovernment process in Mozambique, such as the architecture, the principles, and the associated IT protocols and standards required for the interoperability of the respective eGovernment systems. The framework and recommendations are expected to contribute in assisting organizations to increase the usage and improve the management of IT platforms and services. In addition, they should help in bettering the systematization of the input data in specifying the requirements for the services offered by Internet service providers. The model should bring to the attention of decision-makers many factors that are currently neither considered nor are central to the selection processes. Furthermore, the decision-makers can use the framework in explaining and describing the investment decisions behind ICT projects in the context of the organization value network.
8.
Chemane, Lourino, et al.
(author)
MCDM Model for Selecting Internet Access Technologies : A Case Study in Mozambique
2005
In: EUROCON 2005. - 142440049X ; , s. 1738-1741
Conference paper (peer-reviewed) abstract
The development of Internet, networking and access technologies is providing a wide variety of Internet interconnection alternatives. The availability of several options in the Internet interconnection market makes it difficult to select the "optimal" alternative for a specific end-user in a specific context. A MCDM based model for structuring and solving the Internet access technologies selection decision problem is proposed. The applicability and validation of this approach is demonstrated in a case study in Mozambique
9.
Dosis, Spyridon, et al.
(author)
Semantic Representation and Integration of Digital Evidence
2013
In: Procedia Computer Science. - : Elsevier BV. - 1877-0509. ; 22, s. 1266-1275
Journal article (peer-reviewed) abstract
The ever-increasing complexity and sophistication of computer and network attacks challenge society's dependability on digital infrastructure. Digital investigations recover and reconstruct the digital trails of such events and may employ practices from various subfields (computer, network forensics), each with its own set of techniques and tools. Integration of evidence from heterogeneous sources of data (e.g. disk images, network packet captures, logs) is often a manual and time- consuming process relying significantly on the investigator's expertise. In this paper, we propose and develop an approach, based on the Semantic Web framework, for ontologically representing and integrating digital evidence. The presented approach enhances existing forensic analysis techniques by providing partial and eventually full automation of the investigative process.
10.
Gamukama, Elly Amani, et al.
(author)
A descriptive model for aligning the goals of the Internet stakeholders in LDCs
2014
In: Procedia Computer Science. - : Elsevier BV. - 1877-0509. ; 31, s. 900-909
Journal article (peer-reviewed) abstract
The Internet as a platform for services provision and delivery is adopted world over. To least developed countries it is further perceived as a medium for fostering development. A perception that is likely not to be easily achieved because the decisions that led to its existence in such countries never addressed the need of aligning the stakeholders' goals which inherit the misalignments in present Internet architectural model. We present a model based on AHP theory that lays strategies through which informed decisions for aligning stakeholders' goals can be made to use the Internet as medium for enhancing national development initiatives.
