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This paper presents technology-mediated strategies and a technical infrastructure design for supporting self-regulated learning in open responsive learning environments which are individually compiled by the learners themselves. A self-regulated learning process model has been defined to connect the self-regulated learning approach with concrete learning activities performed to create and use own...
Presently, smart interconnected heterogeneous devices with built-in GPS, Wi-Fi, and Bluetooth capabilities are more affordable, resulting in numerous novel mobile applications. To adapt applications based on the environment they are executed in, we perform context management by proactively monitoring the (network- and location- based) context information available in such devices and applications...
Requirements engineering (RE) for self-adaptive systems (SAS) is an emerging research area. The key features of such systems are to be aware of the changes in both their operating and external environments, while simultaneously remaining aware of their users' goals and preferences. This is accomplished by evaluating such changes and adapting to a suitable alternative that can satisfy those changes...
Requirements are sensitive to the context in which the system-to-be must operate. Where such context is well understood and is static or evolves slowly, existing RE techniques can be made to work well. Increasingly, however, development projects are being challenged to build systems to operate in contexts that are volatile over short periods in ways that are imperfectly understood. Such systems need...
With the advent of new computing paradigms, such as Ubiquitous Computing, Ambient Intelligence, and Cyber Physical Systems, promising application domains like Ambient Assisted Living (AAL) and Car2Car have emerged. One key concern in these application domains is that systems are required to dynamically adapt in reaction to changes within the system or its environment. As a consequence, it is indispensable...
We observe two of the recent trends in information technology. Cloud Computing (CC) is widely accepted as an effective reuse paradigm. Mobile Computing with Mobile Internet Device (MID) such as iPhones and Android devices becomes a convenient alternative to personal computers by integrating mobility, communication, software functionality, and entertainment. Due to the resource limitations of MIDs,...
Computing has reached the time of distributed applications everywhere. Service-oriented architectures are more and more used to organize such complex and highly dynamic applications into business processes calling services discovered in registries at load-time. In this context, Quality of Service (QoS) and agility in business processes become key issues. Instead of binding business processes to services...
We propose a formal framework for designing and developing adaptive N-variant programs. The framework supports multiple levels of fault detection, masking, and recovery through reconfiguration. Our approach is two-fold: we introduce an Adaptive Functional Capability Model (AFCM) to define levels of functional capabilities for each service provided by the system. The AFCM specifies how, once a fault...
This paper proposes a governance decision-making framework for public health care systems. It encompasses and integrates data about family homes in a new intelligent health care information system. In order to support end-user interactions, the framework has been built on the GINGA middleware developed for the Brazilian Digital TV, whose full access will be country-wide in 2015. Based on five governance...
Any of our living environments can form a smart space that provides services and applications for the users according to their situations, the computing and communication facilities of the environment and the surroundings of the user. The ability to take into account the context of the user, and the digital and physical environment makes a space smart. This paper introduces a set of new capabilities...
Simulation is a ??simple?? method to experimentally evaluate the behavior of algorithms designed for parallel and distributed platforms. Moreover, the reliability of the evaluation strongly depends on the models used inside the simulator. This paper is devoted to the study and the evaluation of the behavior of the SimGrid simulator through a comparison between a simulated and a real execution of the...
In many cases, we would like to enhance the predefined adaptability of a running application, for example, to enable it to cope with a strange environment. To make such kind of runtime modifications is a challenging task. In existing engineering practices, the online policy upgrade approach just focuses on the modification of adaptation decision logic and lacks system-level means to assess the validity...
Mashup tools are becoming increasingly important enabling users to compose services and processes on the Web. Most existing tools focus on Web-based interfaces, usability, and visual languages for creating mashups. A major challenge that has received limited attention is context-awareness and adaptivity of service mashups. In this paper we focus on two main aspects: First, a service capability model...
Context is a significant factor in deciding the set of requirements relevant to a system (i.e., software product construction), the alternatives the system can adopt to satisfy these requirements, and the quality assessment of each alternative. By context we mean the conditions in the operating environment of an system that influences how the system should behave in different situations. However,...
This paper presents a first approach of Evaluation Engine Architecture (EEA) as proposal to support adaptive integral assessment, in the context of a virtual learning environment. The goal of our research is design an evaluation engine tool to assist in the whole assessment process within the A2UN@ project, linking that tool with the other key elements of a learning design (learning task, learning...
Challenges in the engineering of self-adaptive software have been recently discussed and summarised in a seminal research road map. Following it, we focus on requirements engineering issues, with a two-fold, long term objective. The first objective is to support the system analyst to engineer adaptive requirements at requirements-time, the second is to make software able to reason on requirements...
As most of existing worm detection methods have a number of significant hurdles to overcome in order to employ such actions as blocking unsecure ports, dropping potentially threatening packets, and eliminating emails carrying malicious codes, breaking communication between infected and non-infected hosts to slow down worm propagation and minimize potential damage. The most noteworthy obstacle is the...
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