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The approach described in this paper replaces the Reliability Block Diagrams (RBD) with a mission event functional architecture that is used to identify and mitigate mission or safety critical functions. The functional architecture is linked to functional test points that are used to demonstrate a reliable and safe product. A product is reliable and safe when the likelihood of mission and safety critical...
Service process usually needs to be tailored for reuse because of change of context. In this paper, we present a mining approach to mining process change sequences based on different context using partial derivatives of the factors affecting the change context, thus finding the best feasible sequence.
The role of context for better decision-making has been a topic of significant research effort over the years. Context-aware systems are able to adapt their operations to the current context without explicit user intervention and thus aim at increasing usability and effectiveness by taking environmental context into account. These systems exploit information about the context of use, such as the location,...
Since the end of the seventies, the utilization of multi-agents simulations has spread out. A typical use of these simulations concerns the modeling of human behavior. In this application case, a key point to ensure the simulation realism is the definition of the agent behavior. Unfortunately, designing such behavior is often complex. In order to help the definition of human behavior, we propose an...
Successful management of critical situations created by major natural and man-made activities requires monitoring, recognizing, and making sense of these activities in order to support decision makers in either preventing a crisis or acting effectively to mitigate its adverse impact. Context plays an important role in crisis management since it provides decision makers with important information about...
This paper proposes the use of local context as a way to semantic information retrieval. In our model, rather than trying to formalize the contents of the documents among which the search is done (e.g. by formally annotating them), we try to automatically build a representation of the context in which the search is done. We consider that search is always done as part of an activity, and that the search...
The three core problems that can be identified with any SOA based system are: (i) service discovery, (ii) service selection, and (iii) service composition. Most of the previous researches have considered these three problems separately. However, we argue that these three problems are intrinsically related and hence, cannot be treated separately. We propose a proactive event-driven model where user...
The Web services composition defines a process that involves various independent Web services to perform a complex function. This process is described with a standard language (BPEL) and executed by tools supporting this language. This kind of languages describes the behavior of different distributed services together, but it does not support the verification nor the validation of behavioral requirements...
Appearance of smartspaces where a number of devices can use a shared view of resources and services characterize modern usage of devices. The paper presents a reference model enabling communication between the devices of a SmartSpace and efficient information usage. The model is based on the application of such technologies as profiling and context management.
We propose a formal framework based on finite state process algebra for modeling service coordination in agent systems. The model is inspired by WS-coordination specification. Several participant agents can coordinate their actions towards reaching a semantically consistent outcome in a distributed activity. The model defines coordinator and participant agents and their generic interaction protocols...
Reliable contextual information of remotely monitored patients should be generated to prevent hazardous situations and to provide pervasive services in home-based care. This is difficult for several reasons. First, low level data obtained from heterogeneous sensors have different degrees of uncertainty. Second, generated contexts can be corrupted or conflicted even if they are acquired by simultaneous...
This paper introduces the design of context-based models of contours in the wavelet domain, which are used to construct generalized lifting (GL) mappings for image compression. The GL context-based mapping may significantly reduce the signal energy and the resulting bitrate. Here, we propose a strategy to define a reduced set of structured models to design the GL. The models capture the contour structures...
This paper investigates context awareness in business process modelling (BPM). It introduces a context model for BPM (CM4BPM) and a role-based business process model (RBPM), and presents an approach allowing enacting processes with respect to the context. Decisions driving business processes enactment are based on context related knowledge. The proposed approach consists on using contextual knowledge...
What is the impact of obstacles on the graphs of connections between stations in Mobile Ad hoc Networks? In order to answer, at least partially, this question, the first step is to define both an environment with obstacles and a mobility model for the stations in such an environment. The present paper focuses on a new way of considering the mobility within environments with obstacles, while keeping...
Context-Sensitive Systems (CSS) demand that designers consider new aspects and challenges in comparison to traditional applications. In a preliminary experiment, we observed that developers have difficulties when including the concept of context in their applications. This paper presents a CSS Design Process, which details the main activities for context specification and the design of CSS and provides...
Pervasive computing systems are highly complex distributed systems. Due to their intrinsic heterogeneity and dynamism, applications must reconfigure themselves continuously to adapt to changes in their execution context. In addition, applications influence their context themselves, e.g., by outputting audio. This may lead to conflicts, when applications interfere with each other or disturb users in...
Pervasive applications are featured by their transient interactions, explicit surrounding contexts and by the flow of activities. Towards transparently tackling these features yet rigorously modelling and validating such applications, this contribution capitalizes on SE advances: (1) explicit separation of concerns (e.g. interaction-centric functionalities and context-awareness); (2) flexible description...
Enterprises employ goal models and process models in running their businesses, as well as when building information systems. A goal model is used to model the interests, intentions and strategies of different stakeholders. A process model is used to describe organizational business processes. An enterprise can benefit from using goal models to motivate the decisions when constructing process models...
In this paper we are presenting a semi-automated schema matching approach named C3SM (conceptual and context based combination of schema matchers). A single schema matching technique is unlikely to be successful to achieve high match accuracy for a large variety of schemas therefore C3SM combines different matchers. C3SM exploits various types of schema information, e.g. element names, data types...
A computer simulation process of Emotion is viewed as a complete course of events by theory of affective computing flow. Based on this theory, the use of existing multi-agent technology and learning theory will achieve the model of affective computing in the computer, single-agent structure in the system of individual learners used to simulate learner in the learning process emotional excitation process,...
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