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In order to optimize cork productivity in the Maamora forest, specifically in the northern part of the A, B, C, D, and E cantons, the study focused on the analysis and updating of the distribution of productive cork oak (Quercus suber L.) stands as well as the evaluation of cork production over the past two decades. For this purpose, the available maps were corrected and updated using GPS data and...
Software product lines are dynamic systems that need to evolve continuously to meet new customer requirements. This evolution impacts both the core platform of the product line and its derived products. For several reasons, the most common way to express requirements by customers is natural language. However, the experience has shown that this communication channel does not give the possibility to...
The purpose of our approach is to study the co-evolution of the platform and the products of software product lines. Because the platform must be able to derive all the family products, products are not allowed to evolve independently from the plateform, thus the propagation of the products changes must be managed efficiently. Instead of focusing on the change impact analysis we propose an approach...
With the increase in number of mobile devices deployed in cloud computing, the demand of context-aware services to assign increases. Indeed, Information about the user's environment exposes new challenges to cloud computing in terms of location-aware, time-aware, device-aware and personalized applications to cope with the constraints of mobile devices in matters of interaction abilities and communication...
In this paper, we present a task scheduling management based on the utility model which is used in economics to represent the needs of both the client and the provider. Indeed, our work copes with two man parameters that affect the broker, the cost of virtual machine instances and their response time. Minimizing those two objectives give the best quality of service to the customers and offer the broker...
Nowadays Big Data becomes one of the biggest buzz concepts in IT world especially with the vertiginous development driving the increase of data encouraged by the emergence of high technologies of storage like cloud computing. Big Data can create efficient challenging solutions in health, security, government and more; and usher in a new era of analytics and decisions. Knowledge Management comprises...
The approach of User-Aware Tenancy integrates the high configurability of multi-tenant applications with the flexibility and the functional variability of Rich-Variant Component use. Multi-tenancy concept consists in sharing instances among a large group of customers, called tenants. Multi-tenancy is a tool to exploit economies of scale widely promoted by Software as a Service (SaaS) models. However,...
Tracing helps assuring product quality, especially in large and complex systems such as Software Product Lines, where numerous artifacts and documents need to be linked and managed. Unfortunately, engineers and project managers rarely accord sufficient attention and importance to this approach, and adopt a traceability implementation strategy. This is due to its complexity and to the difficulties...
During the creation of a software product, the stakeholders have to take a lot of decisions. These decisions are related to the product scope, requirements priority, architecture assumptions, technological issues, etc. In the domain of Software Product Lines, many studies have dealt with decisions taken during the lifetime of the product, but a little attention has been given to the pre-project decisions...
Software Product Line and Component-Based Software Engineering are two expanding paradigms for developing critical and complex systems. Therefore, these two paradigms seem have complementary strengths. So, significant benefits can be gained from their integration. Despite the fact that Non-Functional Requirements (such as security, performance and reliability) are critical to software systems, and...
Software product line engineering allows for the development of common reference assets that can be reused in the development of a set of products of a particular market, the purpose of such large scale reuse is the improvement of time to market and the reduction of costs. This goal can only be achieved if the software product line assets are continuously evolved to cope with changes of user requirements...
Software-as-a-Service (SaaS) is a new delivery model, that involves providing applications to the customer on demand over the Internet. SaaS promotes multi-tenancy as a tool to exploit economies of scale. However, the flexibility of an application to be adapted to individual tenant's needs is a major requirement. Thus, we initiate in this paper to an approach proposing a more flexible and reusable...
Feature-Oriented System Development is a promising and recent approach for developing domain-specific component-based systems. To be adopted in a safety-critical environment it must handle dependability requirements and offer mechanisms to ensure the reliability level of the components and the system. For this purpose, the contract-based approach is a lightweight formal method for designing and specifying...
Systems become complex and no more restricted to one specific domain. So, it is impracticable to describe the whole system by one model. This leads to resolve the problem of composing the domain models described by the system. In this context, this article proposes a new approach for composing specific domain models. First, we analyze some related works. On the basis of the key findings and conclusions...
Service Component Architecture (SCA) is a recent approach and an industry standard for developing complex and distributed systems. Despite the growing research work it still lacks a formal basis for handling trust and reliability of quality-driven systems. In this paper we present main techniques and models for assuring quality and trustworthiness of component-based systems in general, and then we...
Nowadays, context-awareness constitutes an essential aspect for service oriented applications development. Indeed, applications are supposed to react to context changes in order to provide end-users with pertinent services. To deal with such requirement, Context-Aware Service (CAS) has emerged as an underlying software engineering paradigm for context-aware applications development. In this paper,...
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