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Modeling and Analysis of Real-Time and Embedded Systems specification (MARTE) is a profile of the Unified Modeling Language (UML) for model driven development of real-time and embedded systems. To describe formally the semantics of MARTE sequence diagram (MARTE SD), we introduce the timing pi-calculus, a new variant of the pi-calculus, in this paper. The(More)
Oxidative stress plays a critical role in endothelial injury and the pathogenesis of diverse cardiovascular diseases, including atherosclerosis. Isoquercitrin (quercetin-3-glucoside), a flavonoid distributed widely in plants, exhibits many biological activities, including anti-allergic, anti-viral, anti-inflammatory, and anti-oxidative effects. In the(More)
The Sequence Diagram (SD) with time properties is frequently used in the preliminary developing phase of embedded real time system, however, it is not easy to verify due to its informal semantics. An extended time Petri net (TPN) with \emph{weak} semantics–TLOPNforSD–is defined and proved to be decidable as far as reach ability, boundedness(More)
The Sequence Diagram(SD) of UML2.0 enriches those of previous versions by two new operators, assert and negate, for specifying required and forbidden behaviors. The semantics of SD, however, being based on pairs of valid and invalid sets of traces, is inadequate, and prevents the new operators from being used effectively. The semantic confusions between(More)
Most of existing formal models for BPEL based Web Services composition are without description of dead-path-elimination semantics. There are Petri net based models describing the dead-path-elimination semantics, while the models are too big to handle large scale processes. In this paper, a new model called DPE net is advanced to describe the WS-BPEL process(More)
Network flow monitoring is a crucial procedure for optimizing the network infrastructure for better application performance or security issue. In this paper, we address the problem of Flow Edge-Monitoring (denoted as FEM), for which we need to find k (k > 0) edges in an undirected graph G = (V, E), so that if we place k flow monitors on these edges to(More)
Background: Laryngeal squamous cell carcinoma ranks second among head and neck squamous-cell carcinomas. Cancer stem cells can support cancer growth and malignant behavior. Therefore, cancer stem cells isolated from laryngeal squamous cell carcinoma tissue could be used to investigate the initiation, progression, and treatment strategies of this cancer.(More)
Previous works on formal development for component-based systems usually equate refinement relations as behaviors containment. This setting facilitates verifying safety properties, but can’t capture the intuition that a refined component should more easily react to the environment and is not convenient from a point view of design. To address this(More)