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Test automation in distributed systems requires new methods in signal simulation for the stimulation of the distributed system. Increasing complexity of electric electronic (E/E) systems enhances the testing-effort. The main challenge is reducing the time consuming manual stimulation in consideration of improving the quality of testing. Currently used systems for test automation with a software-based...
Credibility of science is fundamentally due to the strenuous efforts made to verify the general consistency among relevant facts, theories, applications, research methodologies, etc. and scientific method which emphasizes the significance of continuously building and testing hypotheses has withstood the test of time as a successful methodology of acquiring a body of knowledge, we can rely on, at least...
The paper identifies real world issues where the engineering calculations used to compute the variables that go into a power system network model can fall short of reality. This not only impacts the viability of the simulation tool used, but worse the accuracy of the data it provides to configure and set today's modern IED protection relays. The faulty result is often hidden until a fault of circumstance...
The success of web services is changing the way in which software is designed, developed, and distributed. Services are in fact continuously re-designed and incrementally developed, released in heterogeneous and distributed environments. They are selected and integrated at runtime within external business processes. To ensure that a deployed service fulfils the QoS requirements, a Service Level Agreement...
The accuracy of prediction is required to conduct modeling the groundwater flow. This research represents the application of extreme learning machine (ELM) that can be used to model the groundwater flow in tidal lowland reclamation. The accuracy is measured using the hold-out and k-fold cross validation methods. The study will be implemented in the Delta Telang I Lowlands area, Banyuasin District,...
The paper describes the design of 1553B bus simulation in satellite simulation based on TCP/IP. It illustrates the total structure of the platform, the workflow of the platform, such as bus network workflow, command word transmission workflow etc.
The method of constructing testing impacts for digital devices is proposed. The method is based on the representation device as a set of models data exchange interfaces. This approach allows to build models of input impacts as a collection of standard operations inherent to the corresponding interface.
This paper shows the application of statistics techniques, simulation and optimization methods for data - based scheduling production. The software of this methods, allows us to analyze the process construction rules for many variants reflecting a variety of combination other factors. For the analysis of the production process the greedy randomized adaptive search procedure (GRASP) and simulation...
The deployment of new security technologies in existing network topologies requires exhaustive testing before usage to avoid down time of the production systems. Nowadays, the required testing is in many cases omitted due to the complexity of creating test cases and experimental set ups. The VISA (Virtual IT Security Architectures) project [1], funded by the German Federal Ministry of Research, aims...
The deployment of new security technologies in existing network topologies requires exhaustive testing before usage to avoid down time of productive systems. Nowadays, the required testing is omitted in many cases due to the complexity of creating test cases and experimental set ups. The VISA (Virtual IT Security Architectures) project, funded by the German Federal Ministry of Research, aims to provide...
This paper evaluates the usefulness of different simulators developed in server system testing for a mobile application during 5 years, with the purpose of identifying the advantages and weaknesses of each simulation method in the given setup. The study found that simulation was used on almost every interface to external systems, and two factors that affected the usefulness of simulators over long...
Embedded systems become increasingly complex and distributed. Although there is necessity for thourough testing, exhaustive validiation and verification is hardly possible in industry due to time and resource restrictions. In the past the reason for this has often been that it was to time-consuming to specify, to execute, and to evaluate test cases for the first design models and the integrated embedded...
Simulation has become one of the dominant tools in wired and wireless network research. With the advent of cloud, grid, and cluster computing it has become feasible to use parallelization to perform richer larger-scale simulations. Moreover, the computing resources needed to perform statistically rigorous simulations are now easily obtainable. Although a number of parallel network simulation frameworks...
Traveling speed of vehicle has a very important effect on the occurrence of road traffic accidents and the harmfulness of the accidents. The speed display error and its distributive regularity would be researched in depth. Based on the combination of speedometer test-bed measurement and statistical analysis, the speed display error and its distributive regularity of given type passenger cars have...
The paper provides test platform design and implementation for BOM-based simulation model tests, to enhance the model reliability, and shorten simulation system integration cycle in the test. It designs independent model test platform, which provided object management, data distribution, time management and other services needed by the BOM model running. The model test platform could provide runtime...
To reduce the testing cost of IP cores in SoC systems, a novel design method of the testbench based on task flow is proposed in this paper, which tries to improve the test coverage, differing from reducing test time and resources. The method is designed for applying to a mixed-signal SoC system. With functional model analysis, as an example, the system DFG model for a mixed signal SoC is derived....
Assessing the causal relationship among multivariate time series is a crucial problem in many fields. Granger causality has been widely used to identify the causal interactions between continuous-valued time series based on multivariate autoregressive models in the Gaussian case. In order to extend the application of the Granger causality concept to non-Gaussian time series, we propose a general statistical...
The Operational Analysis Element of the Air Warfare Centre provides the scientific support to front line units of the Royal Air Force, and consequently is required to develop, maintain and use simulation models and tools for addressing a range of military problems. On occasions there will be opportunities to undertake controlled trials to collect data for model validation. While potentially immensely...
In order to solve difficulties to build complex nonlinear EMC systems model and give an EMC design plan accurately, this paper present a nonlinear EMC simulation method based on grey system theory. Broadband components and harmonic components of subsystems were separated, and the grey nonlinear model of subsystem was designed. Then the grey model of the whole system was actualized. This method may...
In this paper, a simulation method of repairable one-unit system’s reliability and spare requirement under preventive maintenance especially preventive maintenance with periodic testing is discussed. Simulating model is develop to solve the multi-objective constrained optimization problem of maximizing system availability and minimizing maintenance cost under constrains of repair time, test interval,...
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