Browsing by Author "Badawy, Mohamed"

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    A cost engine system for estimating whole-life cycle cost of long-term digital preservation activities
    (Cranfield University Press, 2013-09-19) Sanya, Isaac; Shehab, Essam; Badawy, Mohamed
    This research paper presents a cost engine system that estimates the whole life cycle cost of long-term digital preservation (LTDP) activities using cloud-based technologies. A qualitative research methodology has been employed and the activity based costing (ABC) technique has been used to develop the cost model. The unified modelling language (UML) notation and the object oriented paradigm (OOP) are utilised to design the architecture of the software system. In addition, the service oriented architecture (SOA) style has been used to deploy the function of the cost engine as a web service in order to ensure its accessibility over the web. The cost engine is a module that is part of a larger digital preservation system and has been validated qualitatively through experts’ opinion. Its benefits are realised in the accurate and detailed estimation of cost for companies wishing to employ LTDP activities.
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    Cost modelling for cloud computing utilisation in long term digital preservation
    (Cranfield University Press, 2013-09-19) Shehab, Essam; Sanya, Isaac; Badawy, Mohamed; Ocal, Fatma; Namiesnik, Bartosz; Morineau, Julien; Odika, Stephen; Fernandez Ortiz, Zaira
    The rapid increase in volume of digital information can cause concern among organisations regarding manageability, costs and security of their information in the long-term. As cloud computing technology is often used for digital preservation purposes and is still evolving, there is difficulty in determining its long-term costs. This paper presents the development of a generic cost model for public and private clouds utilisation in long term digital preservation (LTDP), considering the impact of uncertainties and obsolescence issues. The cost model consists of rules and assumptions and was built using a combination of activity based and parametric cost estimation techniques. After generation of cost breakdown structures for both clouds, uncertainties and obsolescence were categorised. To quantify impacts of uncertainties on cost, three-point estimate technique was employed and Monte Carlo simulation was applied to generate the probability distribution on each cost driver. A decision support cost estimation tool with dashboard representation of results was developed.
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    A framework for identifying uncertainties in long-term digital preservation
    (Cranfield University Press, 2013-09-19) Shehab, Essam; Chuku, Glory; Badawy, Mohamed
    With the current expansion in digital information comes an increasing need to preserve such assets. The ENSURE (Enabling knowledge Sustainability, Usability and Recovery for Economic value) pro-ject, a research project under the European Community's Seventh Framework Programme, is the par-ent project to this research area and its aim is to conduct advanced research to address the challenges of Long Term Digital Preservation (LTDP) to ensure the successful preservation, availability and ac-cessibility of preserved data in the future. Focusing on identifying uncertainties in the LTDP activities and their impact on cost and economic performance of digital preservation systems, this paper dis-cusses a framework to identify uncertainties in LTDP for business sectors interested.
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    Modelling long term digital preservation costs: a scientific data case study
    (Cranfield University Press, 2013-09-19) Shehab, Essam; Lefort, Alice; Badawy, Mohamed; Baguley, Paul; Turner, Christopher J.; Wilson, Michael; Conway, Esther
    In recent years there has been increasing UK Government pressure on publicly funded researchers to plan the preservation and ensure the accessibility of their data for the long term. A critical challenge in implementing a digital preservation strategy is the estimation of such a programme’s cost. This pa-per presents a case study based on the cost estimation of preserving scientific data produced in the ISIS facility based at The Science and Technology Facilities Council (STFC) Rutherford Appleton Laboratory UK. The model for cost estimation for long term digital preservation is presented along with an outline of the development and validation activities undertaken as part of this project. The framework and methodology from this research provide an insight into the task of costing long term digital preservation processes, and can potentially be adapted to deliver benefits to other organisa-tions.
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    Towards a framework for predicting whole life-cycle cost for long-term digital preservation
    (Cranfield University Press, 2013-09-19) Badawy, Mohamed; Sanya, Isaac; Shehab, Essam; Baguley, Paul
    Estimating the costs for the whole lifecycle of long-term digital preservation (LTDP) activities ena-bles decision makers to choose carefully what data to preserve, duration of preservation and type of preservation techniques best applied for their information. To address this need, a framework is de-veloped to generate a cost model that will estimate costs for long-term digital preservation activities using storage in the cloud and taking into consideration the impact of mitigating uncertainties, espe-cially obsolescence issues on future costs. This cost estimating framework is part of the European pro-ject entitled ‘Enabling kNowledge Sustainability Usability and Recovery for Economic value’ which aims to provide a total long-term digital preservation solution for companies and public sector organi-sations interested in keeping their digital information alive for the long-term within the healthcare, fi-nancial and the clinical trials business sectors.