Results 21 to 30 of about 114,425 (266)

Generalized detectability for discrete event systems [PDF]

open access: yesSystems & Control Letters, 2011
In our previous work, we investigated detectability of discrete event systems, which is defined as the ability to determine the current and subsequent states of a system based on observation. For different applications, we defined four types of detectabilities: (weak) detectability, strong detectability, (weak) periodic detectability, and strong ...
Shaolong Shu, Feng Lin 0001
openaire   +2 more sources

A Specification Patterns System for Discrete Event Systems Analysis

open access: yesInternational Journal of Advanced Robotic Systems, 2013
As formal verification tools gain popularity, the problem arises of making them more accessible to engineers. A correct understanding of the logics used to express the properties of a system's behaviour is needed in order to guarantee that properties ...
Jose Creissac Campos, Jose Machado
doaj   +1 more source

Diagnosis of Deep Discrete-Event Systems

open access: yesJournal of Artificial Intelligence Research, 2020
An abduction-based diagnosis technique for a class of discrete-event systems (DESs), called deep DESs (DDESs), is presented. A DDES has a tree structure, where each node is a network of communicating automata, called an active unit (AU). The interaction of components within an AU gives rise to emergent events.
Lamperti, Gian Franco   +2 more
openaire   +3 more sources

Accelerated Simulation of Discrete Event Dynamic Systems via a Multi-Fidelity Modeling Framework

open access: yesApplied Sciences, 2017
Simulation analysis has been performed for simulation experiments of all possible input combinations as a “what-if” analysis, which causes the simulation to be extremely time-consuming.
Seon Han Choi   +2 more
doaj   +1 more source

Calculating Restart States for Systems Modeled by Operations Using Supervisory Control Theory

open access: yesMachines, 2013
This paper presents a supervisory control theory based offline method for calculating restart states in a manufacturing control system. Given these precalculated restart states, an operator can be given correct instructions for how to resynchronize the ...
Patrik Bergagård, Martin Fabian
doaj   +1 more source

Modelling Helmet Manufacturing System Using Discrete Event Simulation

open access: yesEngineering Proceedings
We simulated the manufacturing production line in a micro, small, and medium enterprise (MSME) to assess the efficiency of a helmet product organization, using ARENA simulation modelling software version 15.10.00000.
Khoong Tai Wai   +5 more
doaj   +1 more source

Discrete-Time Event-Triggered Control of Nonlinear Wireless Networked Control Systems

open access: yesAbstract and Applied Analysis, 2014
This paper investigates the problem of stabilization of nonlinear discrete-time networked control systems (NCSs) with event-triggering communication scheme in the presence of signal transmission delay.
Songlin Hu   +3 more
doaj   +1 more source

Determining Parental Factors for Clinical Trial Attrition in Pediatric Acute Lymphoblastic Leukemia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background/Objectives Despite high enrollment rates on Children's Oncology Group (COG) protocols, attrition after initial consent is challenging, introducing bias and prolonging trial completion. While adult oncology literature has identified predictors of withdrawal, little is known about caregiver decision‐making for child participation in ...
Kimberly L. Stathas   +3 more
wiley   +1 more source

Weak Diagnosability of Discrete Event Systems

open access: yesIFAC-PapersOnLine, 2020
Abstract In this paper, we propose a weaker property for failure diagnosis called weak diagnosability. Weak diagnosability says that, after the occurrence of a fault event, for any continuation, there always exists at least one trajectory of sufficient length along which we can diagnose the occurrence of the fault event.
Lin Cao 0005   +4 more
openaire   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

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