作者:
He-xuan HuAnne-lise GehinMireille BayartLanguages
Informatics Systems and Software Engineering Department Faculty of Computer Science Université des Sciences et Technologies de Lille Villeneuve d'Ascq France
This paper proposes a formal framework for reconfigurable control, based on model checking. This framework first generates a flexible model (i.e., an execution structure) according to the diagnosis, then defines a tem...
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This paper proposes a formal framework for reconfigurable control, based on model checking. This framework first generates a flexible model (i.e., an execution structure) according to the diagnosis, then defines a temporal specification language to deal with the problems due to infinite execution cycles and non-determinism, and finally provides the algorithms that will automatically verify whether the updated model satisfies the desired specification.
A new nonlinear protocol is proposed for state consensus of multi-agent systems in this paper. It is shown that this protocol can provide faster convergence rate than the typical linear protocol, presented by Olfati-S...
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A new nonlinear protocol is proposed for state consensus of multi-agent systems in this paper. It is shown that this protocol can provide faster convergence rate than the typical linear protocol, presented by Olfati-Saber and Murray, and furthermore guarantees the states of agents reach a consensus in finite time, provided that the interaction topology, represented by a directed graph, has a spanning tree.
This chapter presents our solution to the CoCoME assignment that is based on the Fractal component model. The solution involves (i) modeling architecture in Fractal ADL, (ii) specification of component behavior via be...
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This paper presents a new design to manage transaction and replication for distributed systems. First, we recall the binary vote assignment grid (BVAG) model that imposes neighbours binary vote assignment to its logic...
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This paper presents a new design to manage transaction and replication for distributed systems. First, we recall the binary vote assignment grid (BVAG) model that imposes neighbours binary vote assignment to its logical grid structure on replicated data copies. Based on this model, we extend our work to design the distributed transaction semantic in order to manage BVAG transaction both in normal and failure cases. We present an implementation of the system. The proposed distributed transaction semantic shows that the system preserves the data consistency and support advance fault-tolerant through synchronization approach.
Inspired by Weber's Law, this paper proposes a simple, yet very powerful and robust local descriptor, Weber Local Descriptor (WLD). It is based on the fact that human perception of a pattern depends on not only th...
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Inspired by Weber's Law, this paper proposes a simple, yet very powerful and robust local descriptor, Weber Local Descriptor (WLD). It is based on the fact that human perception of a pattern depends on not only the change of a stimulus (such as sound, lighting, et al.) but also the original intensity of the stimulus. Specifically, WLD consists of two components: its differential excitation and orientation. A differential excitation is a function of the ratio between two terms: One is the relative intensity differences of its neighbors against a current pixel;the other is the intensity of the current pixel. An orientation is the gradient orientation of the current pixel. For a given image, we use the differential excitation and the orientation components to construct a concatenated WLD histogram feature. Experimental results on Brodatz textures show that WLD impressively outperforms the other classical descriptors (e.g., Gabor). Especially, experimental results on face detection show a promising performance. Although we train only one classifier based on WLD features, the classifier obtains a comparable performance to state-of-the-art methods on MIT+CMU frontal face test set, AR face dataset and CMU profile test set.
Single-row routing is fundamentally a routing technique for pairs of nodes arranged in a single-row *** contributes in the printed circuit hoard(PCB)design. The main objective in single-row routing is to achieve minim...
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Single-row routing is fundamentally a routing technique for pairs of nodes arranged in a single-row *** contributes in the printed circuit hoard(PCB)design. The main objective in single-row routing is to achieve minimum congestion arising from the number of horizontal tracks in the *** results for a single layer network have been achieved through our previous model called ***,a single layer model suffers from non-tolerable lower bound values with high congestion depending on the network size. These results may further be improved by partitioning the network into two or more *** this paper,we propose a technique based on the graph partitioning concept for partitioning the nodes from a single-row network into several layers of planar *** experiment result shows that the proposed technique is able to decrease the network congestions.
Component-based engineering is a recognized paradigm, which models an application as a collection of reusable components. The key idea behind components is that they contain only the business logic and communicate wit...
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Component-based engineering is a recognized paradigm, which models an application as a collection of reusable components. The key idea behind components is that they contain only the business logic and communicate with one another only via well-defined interfaces. The communication paths among components (so called bindings) are in modern component systems realized by software connectors, which allow explicit modeling of communication and also its implementation at runtime. An important aspect of using connectors is the possibility of their automatic generation, which saves a significant amount of development work. However, the generation itself is not a trivial task, since there is a big semantic gap between the abstract specification of a connector at design time and its implementation at runtime. In this paper, we present an approach to generating implementations of software connectors. The approach is based on a new domain specific language for describing templates of connector implementations and a transformation framework using the Strate-go/XT term rewriting system for generating source code of connectors.
To allow comfortable and easy development, component systems have to provide a rather a big set of development supporting tools including at least a tool for composition and repository for storing and retrieving compo...
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To allow comfortable and easy development, component systems have to provide a rather a big set of development supporting tools including at least a tool for composition and repository for storing and retrieving components. In this paper, we evaluate and present advantages of using MOF and meta-modeling during definition of component system and also during development of the supporting tools. Most of the presented arguments are based on a broad practical experience with designing the component systems SOFA and SOFA 2; the former designed in the classical ad hoc manual way, while the latter via meta-modeling.
This paper presents a wireless intelligent incontinence management system being developed for the University Malaya Medical Center (UMMC) that utilizes ldquosmartrdquo diapers to discreetly monitor and estimate wetnes...
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This paper presents a wireless intelligent incontinence management system being developed for the University Malaya Medical Center (UMMC) that utilizes ldquosmartrdquo diapers to discreetly monitor and estimate wetness events, detect other relevant clinical conditions and alert staff by transmitting information via wireless technology to an intelligent central management system. We describe the hardware and software modules of the system and give results conducted on diaper experiments and the transmission range of the wireless technology.
Although Web services are generally envisioned as being stateless, some of them are implicitly stateful. The reason is that the Web services often work as front-ends to enterprise systems and are used in a session-ori...
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Although Web services are generally envisioned as being stateless, some of them are implicitly stateful. The reason is that the Web services often work as front-ends to enterprise systems and are used in a session-oriented way by the clients. Contrary to the case of stateless services, for a stateful Web service there exist constraints to the order in which the operations of the service may be invoked. However, specification of such constraints is not a standard part of a Web service interface, and compliance with such constraints is not checked by the standard Web service development tools. Therefore, we propose in this paper to extend a web service interface by a constraint definition that is based on behavior protocols. Also, we implemented a tool that checks whether a given BPEL code complies with the constraints of all stateful web services it communicates with. The key idea behind the tool is to translate the BPEL code into Java and then to check the Java program using Java PathFinder with behavior protocol extension.
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