Search results for: S. Khaddaj
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Cloud Computing has emerged as a viable alternative to in-house computing resources for many organisations. It offers an alternative solution for many enterprise applications, particularly large-scale legacy applications. In addition, it can offer a cost effective strategy for small and medium-sized enterprises (SMEs) where the high set-up and maintenance cost of computing resources can be prohibiting...
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As technology moves from being an enabler to become the lifeblood of businesses in the digital era, so does the data used to support the implementation of these technological shifts. In order for the data to be an asset and not a liability, it is primordial to ensure that the data captured and maintained over time is accurate, traceable, reliable and current. However, very often, in order to complete...
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In a typical cloud based data centre, several physical machines (PM) host dozens of virtual machines (VM), which run various applications and services. VM load varies according to the different type of users' applications and traffic, and sometime this traffic may overwhelm VM's resources. Physical machines that host many VMs have limited capacity and if they are overloaded their performance might...
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Internet of things (IoT) is making its mark on various aspects of life. Determining the quality features for such devices vary according to the functionalities of the system. Non-functional quality factors play a vital role in evaluating such systems due to their applicability and multiple functionalities at a given time. Thus, this paper focuses on addressing quality of service (QoS) issues and considers...
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The cost of fixing of a software defect in the later phases of the Software Development Life Cycle (SDLC) is significantly more than fixing a defect in the earlier phases of the SDLC, especially for distributed systems. The Zero Deviation Life Cycle (ZDLC) has been engineered to ensure that there is minimum deviation from the requirements and there is as little defect injection as possible between...
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Production environments in large enterprises are expensive to maintain, support and enhance. Organisations take extreme care to provision and configure their environments and they are very wary to change. This is because a small change may result to a domino effect of failures resulting in costly system downtime. Consequently, engineers are also looking for reliable ways of testing environmental changes...
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The Cloud Computing utility model has raised a number of challenges particularly in relation to service provisioning and user requirements. In such a service driven environment it is very important that resource provisioning can be optimized and users and applications have some level of assurance that their requirements can be satisfied. However, in order to guarantee a certain level of Quality of...
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Internet technology and advances in IT in general has made another paradigm of distributed computing sort after strategy for IT organisations. From client-server computing, Grid computing and now cloud computing, distributed computing architecture made it possible for multiple uses of IT infrastructure and application with managed allocation policies to utilise shared resources and applications. Service...
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International Journal of Gynecology and Obstetrics > 2012 > 119 > Supplement 1 > S76-S79
Obstetric fistula is a complication of childbirth that often follows obstructed labor and is almost exclusive to low-resource countries. The original Global Burden of Disease Study (GBD 1990 Study) reported an incidence of 8.68 per 100000 and a prevalence of 51.35 per 100 000 for women aged 15-44years in low-resource regions. The most cited global prevalence estimate is 2 million women. Although the...
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The emergence of grid and cloud computing require load balancers to deal with potential problems, such as high level of scalability and heterogeneity of computing resources. In this paper, we present a generic load balancing framework which separates allocating process and migrating process while preserving a guaranteed level of service. Based on this framework, an intelligent load balancer that is...
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Human conversation is the best example of loosely coupled distributed communication known to man. This study specifically considers those parts of the human conversation that show evidence of dynamism and attempts to model these parts with the objective of translating the knowledge of conversational dynamics into the domain of computerised distributed systems. The discipline of metaphorical modelling...
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This paper proposes a novel approach in tackling the resource brokering problem in heterogeneous distributed computing systems. To obtain the best utilization of the systems, researchers are often focusing on improving scheduling algorithms and strategies with the knowledge of tasks and resources at the scheduling time. Unlike these approaches, we apply an intelligence decision making mechanism to...
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The continuous decentralisation and distribution of software, hardware, and human resources depends on a number of fundamental factors including the ability to provide desired Quality of Service (QoS) on resources assembled dynamically from enterprises, service providers and customer systems. Despite recent developments there are still many challenges in efficient information delivery and management...
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At the core of most decision making mechanisms is some sort of intelligent logical reasoning strategy. Therefore, the accuracy and precision of decision making depends on the applied logic and learning processes. This paper tries to address these issues by formulating a tolerance to imprecision view which can be used in the proposed decision making framework that integrates various reasoning strategies.
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Semantic web links together and defines various parameters leading to user/customer satisfaction. Therefore it is important to identify the aspects of various customer satisfaction areas in online businesses, which can support semantic web. When recollecting about parameters in e-commerce, we will come automatically to the question: 'What are then these parameters ? Where do they lead to? There is...
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Information and Software Technology > 2004 > 46 > 7 > 491-498
It is already widely accepted that the use of data abstraction in object oriented modelling enables real world objects to be well represented in information systems. However, the issue of how to deal with the continuity problem during gradual or sudden changes of objects continues to pose conceptual and technical challenges. This paper investigates the use of object versioning techniques to examine...
