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This paper introduces a methodology to design a Context-aware Adaptive System based on a layered software architecture. The model of the context awareness multi-modal traffic management takes into account the context parameters in order to adapt dynamically the decisions (choice of the best transportation route). The efficiency of the proposed technique is validated through a case study including...
A Massive Open Online Course (MOOC) is a popular way for universities to deliver quality course content to a global audience. Furthermore, a MOOC specialization offers a series of related such courses with a capstone component. Typical software engineering capstone projects in campus courses involve teamwork and creating software. Within such a context, students experience the software development...
Consider a road network where some vertices representpoints-of-interests (POIs) and each POI belongs to exactlyone category-of-interest (COI). Within that context, considera group of travelers, each leaving from their source locationstowards their destinations (all possibly distinct), as well asa sequence of COIs that the group is interested to visit. ASequenced Group Trip Planning Query (SGTPQ) returns,...
Motion planning classically concerns the problem of accomplishing a goal configuration while avoiding obstacles. However, the need for more sophisticated motion planning methodologies, taking temporal aspects into account, has emerged. To address this issue, temporal logics have recently been used to formulate such advanced specifications. This paper will consider Signal Temporal Logic in combination...
Self-adaptive systems are able to manage themselves autonomously. A common approach to engineer these systems is to use the MAPE control loop based on these four steps: Monitoring, Analysis, Planning, and Execution. Existing research pays little attention to the modeling of self-adaptive systems with multiple MAPE control loops, and is lacking in considering the formal specification and verification...
This paper analyses the changes we have made in teaching agile methodologies, practices, and principles in four courses in order to address a specific dilemma: students need to apply agile methods in order to learn them, but when complementing our courses with applied content, we face the problem that students perceive the learning and application of agile methods as less important than delivering...
To provide assistance functions in context of surgical interventions, the use of medical workflows plays an important role. Workflow models can be used to assess the progress of an on-going surgery, enabling tailored (i.e., context sensitive) support for the medical practitioner. Subsequently, this provides opportunities to prevent malpractices, to enhance the patient's outcome and to preserve a high...
The smart campus framework that is currently available does not fully suit African universities, there is a need to develop a framework that will be more suitable for African universities. It is often found that the framework used in European universities is modified to suit African universities. To address this need a South African university was used as a case study and the results show the strength...
Effort estimation is more challenging in an agile context, as instead of exerting strict control over changes in requirements, dynamism is embraced. Current practice relies on expert judgment, where the accuracy of estimates is sensitive to the expertise of practitioners and prone to bias. In order to improve the effectiveness of the effort estimation process, the goal of this research is to investigate...
In this work we employ hierarchy in order to greatly reduce the computational complexity for generating the optimal control for a discrete event system. Specifically, we propose a formal notion of equivalence we term cost equivalence that we use to generate an abstraction of a weighted automaton representing a supervisory controller. We demonstrate that this abstraction can be employed for planning,...
Increasing complexity of Cyber-Physical Systems (CPS) is mandating architectures that are autonomous and adaptive to the changing contexts. The area of planning and acting in Artificial Intelligence (AI) provides a well-understood paradigm for designing such intelligent systems. Capturing the domain knowledge formally, both declarative and procedural is crucial to this approach. There have been many...
Adapting systems to the changes of their ubiquitous environments is a complex task. The autonomic computing was proposed as a solution to tackle this complexity. It brings a system with self-management capabilities to dynamically adapt itself to context. We are interested in the architectural adaptation approaches of autonomic applications which follow the MAPE-K loop process. During the execution...
Emergent changes are common in large engineering projects and in such dynamic project environments planning and documentation work are often deprioritized in favor of actionable decisions. Previous research has failed to look at the planning and documentation problem as a sociotechnical system as it relates to project managers' and engineer's practical work. In this article, a single case study approach...
The assessment of travel time reliability for segments and routes is a rapidly advancing frontier. The increasing availability of probe data is making it possible to monitor reliability in real-time based on individual vehicle data as opposed to ex-post-facto based on averages. This paper examines metrics that can be used to monitor reliability based on probe data. The merits of traditional metrics...
Medical tourism is a domain rich of data that are stored in many hundreds of data sources. Many of these sources should be used during the development of tourism information systems. That is why, it is very important to create a referential model that represents the medical tourism in Tunisia. The e-tourism ontology provides a way to achieve integration and interoperability through the use of shared...
Enterprise systems engineering (ESE) is a multidisciplinary approach that combines traditional systems engineering (TSE) and strategic management to address methods and approaches for aligning system architectures, system development and system implementation with enterprise business rules, enterprise strategic objectives and enterprise capabilities within diverse complex subsystems. ESE therefore...
Itinerary planning is consequential process and time consuming process for travelling agencies which need to be done conscientiously to gratify the user requisites. The satisfaction level of users can be incremented by getting the itinerary in the customized manner by amassing the details from the users itself. There will be more encumbrance of processing the huge search space will occur where the...
We address collaborative decision in the Multi-Agent Consistency-based online learning of relational action models. This framework considers a community of agents, each of them learning and rationally acting following their relational action model. It relies on the idea that when agents communicate, on a utility basis, the observed effect of past actions to other agents, this results in speeding up...
Autonomous driving has shown the capability of providing driver convenience and enhancing safety. While introducing autonomous driving into our current traffic system, one significant issue is to make the autonomous vehicle be able to react in the same way as real human drivers. In order to ensure that an autonomous vehicle of the future will perform like human drivers, this paper proposes a vehicle...
With the increasing amount of renewable and difficult-to-forecast generation units, Transmission System Operators (TSO) are facing new challenges to operate the grid properly. Indeed, given the intrinsic variability and limited predictability of most renewable generations, the application of the conventional and deterministic N-1 method becomes very costly. Therefore, a new approach is needed for...
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