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A simulation framework is introduced that facilitates hierarchical definition and composition of discrete-event systems. This framework enables modelers to flexibly use graphical block diagrams, state charts, and MATLAB textual object-oriented programming to author custom domain-specific discrete-event systems. The framework has been realized in an implementation that spans multiple software simulation...
SIMON is a new family of lightweight block ciphers proposed by the National Security Agency (NSA) in 2013. Since its publication, it has attracted much research interest and a number of analysis results have been presented. As a popular kind of implementation attack method, the fault attack also works when it is applied to SIMON. In this paper, we propose an effective fault attack on SIMON under the...
Both network connectivity and hidden terminal effects play a significant role in topology design of wireless sensor networks. In this paper, we present a joint analysis of the two issues. Lots of simulation studies are carried out to investigate the effects of network scale and transmitting range on the two issues. Based on the simulation results, we propose a reasonable and suitable empirical formula...
With the development of global navigation satellite system (GNSS) remote sensing, radio occultation (RO) has become an important atmospheric observation technique that mainly be used for numerical weather prediction (NWP) and global climate monitoring (GCM). However, residual ionopheric error (RIE) can still be significant after an ionospheric error elimination by linear combination of dual-frequency...
This paper analyzes the vibration characteristics of group opening panel structure in the ship integrated superstructure's side by using finite element software-ANSYS. The results of modal analysis of two schemes of panel structures with large openings, 2×2 openings and 3×3 openings are compared with each other. The effects of opening number and fixing the frame carrying equipment to the openings...
In this paper, the trailing suction hopper dredger dredging production is used to be an optimization objective. By analyzing the impacts of dredging operation behaviors and system uptime factors, an artificial neural network algorithm for parameter optimization of dredging operations is proposed. Based on the field construction parameters of the trailing suction hopper dredger, the method integrates...
With the development of information technology, the demand for video transmission in wireless networks rapidly increases. The traditional traffic shaping algorithms cannot fully (or adequately) meet the demand for high-quality video transmission in wireless networks. Aiming to reduce this problem, this paper proposes a new multi-service flow, token bucket shaping scheme in an IEEE 802.11e environment...
In this study, an improved equipment effectiveness evaluation method based on the cloud theory was proposed to remedy the deficiency in the existing cloud evaluation methods. And the evaluation process was designed: got the index cloud model by the reverse cloud algorithm, determined the weight cloud model by the improved formula weighting method, obtained the system effectiveness cloud model by the...
Data center is the infrastructure in big data processing, which constructs computing platform by distributed computer. The paper aims to investigate the analytical model by adopting queueing theory in data center of big data. The new queueing model developed fits the MapReduce programming model accurately and discovers the nature of the programming model. The utilizations and mean waiting times of...
Taiwan depends heavily on its tourist trade. The purpose of this study is to use the online platform of blogs to investigate whether emotional contagion, blog attraction and customer perceived value would affect the consumer's intent. The number of valid questionnaire samples is 312, and PLS is used to conduct linear structural equation model analysis. Research results show that blog attraction and...
Over the past few decades, numerous linear discriminant analysis based extensions are proposed for dimensionality reduction. However, most of them are developed intuitively according to specific motivations by employing various techniques. Therefore, it will be instructive to provide a unified discriminant analysis model for exploring the commonalities and differences. In this paper, we propose a...
Service search has been introduced to exploit heterogeneous resources of distributed devices on the purpose of supplying ubiquitous services in ubiquitous stub environments, especially in MANETs. However, due to the characteristics of infrastructure-less, devices' limited resources, and dynamic topology caused by the mobility of devices, service search faces great risk of failure. Usually, clusters...
Integrated Modular Avionics (IMA) system is modular and with ability of reconfiguration, however its reliability model and analysis is complex. In this paper, a modeling and simulation method was designed upon the principle of the technology of Stateflow to analyze its mission reliability. At First, IMA system fault logic process is discussed considering reconfiguration strategy when lower layer module...
Pipe strings, as critical components in oil and gas industry, are highly susceptible to axial cracks for stress corrosion and fatigue damage. The conventional detection methods, such as magnetic flux leakage and magnetic particle inspection, are inadequate for accurately detecting a narrow axial crack. Alternating current field measurement (ACFM) technique is an electromagnetic inspection method capable...
This paper presents a simulation algorithm to analyze a type of colored time Petri nets, in which a time interval is associated with each transition. Specifically, we first unfold colored time Petri nets to standard time Petri nets and then develop a simulation algorithm of time Petri nets to realize the simulation of colored time Petri nets. A model of a real system is used to demonstrate and validate...
Multi-hop over-the-air reprogramming is essential for the remote installation of software patches and upgrades in wireless sensor networks (WSNs). Recently, coding-based reprogramming protocols are proposed to address efficient code dissemination in environments with high packet loss rate. The problem of analyzing the performance of these protocols, however, has not been explored in the literature...
Data aggregation and active/sleep scheme are wildly used in energy-efficient wireless sensor networks. However, little research has been done on the optimal active/sleep scheme design for an aggregator node. In our previous work, we developed a stochastic model of aggregator node with active/sleep scheme for performance analysis and optimization. That model simulates the direct mode transfer from...
The development of embedded simulation system is different from that of general simulation system. Several problems are studied for guiding the development of embedded simulation system. The concept of embedded simulation system is defined. Simulation system is first introduced into the embedded simulation field as the embedded system. An embedded simulation Interoperability Technical Reference Model...
A large-scale deployment of femto BSs (FBSs) will result in the substantial energy consumption. One fairly intuitive way to improve energy efficiency for femtocells is a sleep mode where the FBS periodically transmits pilot signal especially in low traffic scenario. Nevertheless, it is inefficient when not involved an active call in the FBS coverage area. To address this issue, this paper proposes...
The knowledge-based simulation experiment data integrative analysis tool that utilizes the knowledge model of sample data extraction and the database of analysis project is designed to implement the integrative analysis operation including simulation experiment data import, sample data extraction, data analysis, simulation system characters appraisement and the generation of analysis results report...
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