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Vehicle Management System (VMS) is onboard real-time network, which ensures the flight safety and economy by scheduling and managing the onboard resources. With the help of computers, local area network (LAN), simulation software and real-time operation system, we build a distributed computer simulation platform to simulate this onboard network. In this paper, we present a Simulink/RTX/Reflective...
Mathematical dependencies for calculation of main parameters of vacuum gripping devices have been derived with the purpose of increasing efficiency of devices developed for handling of flexible containers during filling with free-flowing products. Computer modelling of the process of gripping and holding of flexible containers made with air-penetrating materials with the help of vacuum gripping devices...
Nowadays, the total power consumed by data centers is increasing more and more. In particular, the power consumed by data center facilities accounts for about half of total input power. In this paper, a hierarchical control structure is proposed for efficient management of an indirect adiabatic cooling system, which utilizes fresh air. Data center cooling needs can be met with various combinations...
This paper investigates different simulation methods in HFSS for periodic arrays. Due to extensive computation times and memory requirements of explicitly simulating a large finite array, both HFSS's finite array domain decomposition method (DDM) and an infinite array simulation are studied as alternatives to reduce total simulation time. For these tests, a helix antenna operating between 8GHz and...
Air Data Computer (ADC) is an electronics device computes air data flight parameters. The objective of this paper is to analyze, simulate, and propose hardware implementation module for the Air Data Computer. Simulation of ADC model has been faced by two problems. The first one was to choose true values of dynamic temperature because it depends on flight altitude and airspeed. The second problem is...
Simulation is experimentation with a model. The behavior of the model imitates some salient aspect of the behavior of the system under study and the user experiments with the model to infer this behavior. This general framework has proven a powerful adjunct to learning, problem solving, and design. In this tutorial, we focus principally on discrete-event simulation—its underlying concepts, structure,...
Modeling and Simulation methods have been used to better analyze the behavior of complex physical systems and it is now common to use simulation as a part of the scientific and technological discovery process. Formal M&S proved to be successful in providing a sound base for the development of discrete-event simulation models, improving the ease of model definition and enhancing application development...
Agents are self-contained objects within a software model that are capable of autonomously interacting with the environment and with other agents. Basing a model around agents (building an agent-based model, or ABM) allows the user to build complex models from the bottom up by specifying agent behaviors and the environment within which they operate. This is often a more natural perspective than the...
To teach the computational science necessary to prepare STEM students for positions in both research and industry, faculty need HPC resources specifically tailored for their classrooms. Scholar was developed as a large-scale computing tool that faculty can use in their classrooms to teach HPC as well as scientific principles and experimentation. In this paper, we discuss the pedagogical need for a...
Haze removing from a single image is a very difficult problem. Haze is fashioned because of the two essential phenomena which might be attenuation and the air light. Attenuation decrease contrast and air light increase more light inside the region. We use color attenuation prior for dehazing single hazy image. We divide image into small sized patches. Here we discuss atmospheric scattering model,...
An experimental study on computer-aided translation of modern Chinese existential sentences was carried out with Yaxin CAT2.5. Firstly, 78 modern Chinese existential sentences were chosen as linguistic materials and translated into English automatically with Yaxin CAT 2.5. There are, however, many mistakes in the result of the automatic translation due to various causes. Then, 67 Chinese-English translation...
Monte Carlo simulations are widely accepted as a tool for evaluating positions in games. It can be used inside tree search algorithms, simple Monte Carlo search, Nested Monte Carlo and the famous Monte Carlo Tree Search algorithm which is at the heart of the current revolution in computer games. If one has access to a perfect simulation policy, then there is no need for an estimation of the game value...
As modern simulations involve large inputs and outputs over the network, there is an increasing need to store, manage and analyze the massive datasets, efficiently. In this paper, we present ARLS (After action Reviewer for Large-Scale simulation data), a Hadoop-based output analysis tool for large-scale simulation datasets. ARLS clusters distributed storages using Hadoop and analyzes the large-scale...
The radar cross section (RCS) of an airplane is very important subject in a military use. As for a RCS estimation object, a scale down model is often employed for the ease of measurements. Recently, electromagnetic simulations of RCS become very convenient because of developments of high speed calculation methods such as MLFMM and HOBF in electromagnetic simulators employing MoM algorithm. As for...
The requirement and characteristic in Computer Generated Forces behavior modeling were analyzed. From the design concept of American OneSAF system, a method for behavior modeling based on composability was proposed and the formalization description of behavior was given. Moreover, the Behavior Modeling Composer Tool was developed based on this method to assist the behavior modeling. Finally, an application...
This paper presents a design of a real time simulation system based on rapid prototyping and VxWorks real-time operating system for an unmanned aerial vehicle. A simulation method based on rapid prototyping was introduced and the simulation model was constructed in MATLAB/SIMULINK environment. The real-time simulation software for specified hardware platform was generated automatically. With this...
Proper design of the flight controller of an unconventional unmanned aerial vehicle requires highly stable performance, as well as reliable computer aided tools. Such tools provide simulation process that is based on classical control design. This paper describes the development of flight control design and simulation process, which can be applied to vehicles of a wide range of classes. The design...
This paper describes an approach for the design of coursework in crash injury biomechanics based on a remote collaborative learning environment. Virginia Tech and Wake Forest University (VT-WFU) have formed the Center for Injury Biomechanics, a unique partnership, which offers a graduate curriculum in crash injury biomechanics to prepare graduate biomechanics students to address this critical public...
A hardware-in-the-loop (HIL) simulation platform in use of windows operation system was successfully established based on general industrial PC combined with an external timer. The following HIL simulation process of missile flight control system indicated that the novel platform could not only satisfied the real-time requirement of HIL simulation, but also is low-cost and universal, which could provide...
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