On-line Simulation System Research Articles

How Teaching and Internship Influence the Evidence-Based Practice Approach of Nursing Students: A Longitudinal Study.

The study aimed to analyze students' approach to evidence-based practice and evaluate the effect of teaching (based on lessons in statistics, epidemiology, evidence-based nursing, bioengineering, English language) and internship experiences on the attitude of nursing students to evidence-based practice. In 2019,one hundred nineteen second-year nursing students from an Italian university were involved in a pre-post longitudinal study. The Italian version of the Student-Evidence Based Practice Questionnaire was administered to nursing student in four moments of one academic year. The Student-Evidence Based Practice Questionnaire showed different mean scores based on the four moments of the survey with a significant increase after the experience of planning clinical cases with an online simulation system. In particular, the aptitude subscale does not have significant improvements in the various phases of the study. Conversely, the support of the clinical tutor affects student performance. The didactic module on evidence-based nursing develops the ability to assess the quality of the information found and its sharing. Basic English proficiency is not significantly correlated. To develop evidence-based practice knowledge, aptitude, and skills in nursing students, it is necessary to strengthen the learning opportunities both in classroom lessons and in simulation and internship experiences.

Design of On-line Simulation System for Signal Control of Urban Intersections Based on Visual Sensing Technology

Intersection area is the area with the most serious conflicts and accidents in the whole urban traffic system. Therefore, it is of great significance to combine modern computer technology, sensing technology and communication technology to intelligently control intersections, improve the efficiency of traffic signal control and reduce the delay time in conflict areas. Starting with video detection and using deep learning in the detection module, a video detection mechanism based on restricted Boltzmann machine network is proposed. Based on C # programming language, the intersection traffic signal simulation module is designed through COM interface provided by traffic simulation software VISSIM, which realizes road network import, parameter setting, signal timing change, simulation operation and simulation result output. Numerical experiments show that fuzzy control method with self-correcting factor is superior to timing control method and classical fuzzy control method in average delay time of vehicles.

A GIS Based Unsteady Network Model and System Applications for Intelligent Mine Ventilation

With the development of state-of-the-art technology, such as the artificial intelligence and the Internet of Things, the construction of “intelligent mine” is being vigorously promoted, where the intelligent mine ventilation is one of the primary concerns that provides the efficient guarantee for safety production in the underground coal mine system. This study aims to integrate the geographical information system (GIS) and the unsteady ventilation network model together, to provide location based information and online real-time support for the decision-making system. Firstly, a GIS based unsteady network model is proposed, and its algorithm steps are brought out. Secondly, a prototype web system, named 3D VentCloud, is designed and developed based on the front and end technique, which effectively integrates the proposed algorithms. Thirdly, the model is validated, and the system is applied to a real coal mine for ventilation solution, which demonstrates that the model is reasonable and practical. The online simulation system is efficient in providing real-time support. The study is potential and is expected to guide the real-time coal mine safety production.

Applications of online simulation supporting PWR operations

Real Time Simulation (RTS) has long been used in the nuclear power industry for operator training and engineering purposes. And, Online Simulation (OLS) is based on RTS and with connection to the plant information system to acquire the measurement data in real time for calibrating the simulation models and following plant operation, for the purposes of analyzing plant events and providing indicative signs of malfunctioning. An OLS system has been developed to support PWR operations for CPR1000 plants. The OLS system provides graphical user interface (GUI) for operators to monitor critical plant operations for preventing faulty operation or analyzing plant events. Functionalities of the OLS system are depicted through the maneuvering of the GUI for various OLS functional modules in the system.

Online Simulation System for Cellular Core Network Performance Measurement

This paper presents an online simulation system capable of acquiring and processing network metrics from a measurement server to output the throughput of cellular core networks. A real-world testbed is set up for simulation result evaluation. Comparison shows that the system can obtain user-level performance closely similar to the result obtained in the real-world test using the same network metrics.

GVM based intuitive simulation web application for collision detection

Abstract Computer simulation, which has been proved to be an effective approach to problem solving, is nowadays widely used in modern science. However, it requires a lot of computing resources, which are difficult for general users to acquire. In this paper, we design a Web based system to implement on-line simulation system for ordinary users. As a useful example, the simulation of one type of collision detection model is presented in this paper. Moreover, the software application of simulation is offered as a service on Web. Meanwhile, the incorporation of general vector machine (GVM, a type of neural network) to intelligently predict the relationship between simulation parameters and computation resources is presented, which could further provide more information for system monitoring and scheduling. The system has demonstrated efficiency and intuitiveness for users of this type of applications.

The design of remote participation platform for EAST plasma control

EAST has become a physics experimental platform for high parameter and steady-state long-pulse plasma operation. A new remote participation platform for EAST plasma control is designed, which is composed of gatekeeper system, web-based user interface system, discharge scenario management system, online simulation system and data interface with on-site plasma control system (PCS). The identification and access privilege of remote participator is validated by the gatekeeper system. Only authorized users can set control parameters for next shot plasma control or making discharge scenario for future shot through WebPCS which is a web-based user interface and designed based on B/S structure. The systematic architecture design and preliminary deployment of such remote platform will be presented in this paper.

Cloud technologies in secondary schools

The purpose of this study is to determine the role and place of cloud technologies in the modern school, the main task – determining components of cloud technology tools support individual learning school subjects, the object of study – the tools of support and e-learning in secondary schools, the subject – means cloud technologies for e-learning students, the main research method – a theoretical study. The system of cloud technology training tools for specific school subject consists of general education tools cloud technologies (tools for online e-learning materials development and online storage, cloud technology learning management tools) and specialized cloud technologies tools – browser-based system of programming and simulation (to support learning computer science), mathematical mobile environments (to support the study of mathematics), virtual online labs and simulation system (to support the study of physics, chemistry or biology) etc. The use of cloud technologies in the educational process of general education schools especially will solve the problem of providing equal access for students and teachers to high-quality educational resources in the classroom and in their spare time.

A Rapid Adjustment Simulation System for Flexible Fuselage Assembly

The utilization of reconfigurable numerically controlled tooling is important for flexible fuselage assembly. An online programming and simulation system for flexible tooling is presented, which is composed of two modules. The online programming module generates NC code from an adjustment sequence and path, taking into consideration the process and device parameters. This paper details the second module, the visualized simulation module, which validates and optimizes the related adjustment process. This module covers three steps, those are, the creation of a virtual simulation environment based on the light-weight 3D model, the loading of the key feature points related to the adjustment and process information, and the adjustment simulation. The system can rapidly response to “one fixture with more models” and “one fixture with more states” deep flexibility demands for digital fuselage assembly, enable the flexible tooling to a have better capacity for independent adaptability. An example of flexible fuselage assembly process is used to illustrate the detail and advantages of the system. The three-step simulation strategy is proposed and detailed in this paper.

Development of the Nowcast Traffic Simulation System for Road Traffic in Urban Areas

This paper describes the development of an on-line traffic simulation system called the “Nowcast Traffic Simulation System” for road traffic in urban areas. The system can reproduce the traffic situation based on various types of traffic data provided in real time such as floating car data and traffic sensor data. The output data is used for several traffic information services, including CO₂ monitoring. In this paper, the authors explain the concept of the Nowcast Traffic Simulation System and its theoretical framework followed by an example of a demonstration experiment in Kashiwa City in Japan.

A PLC Based Real Time Simulation and Test Strategy for the Industrial Process Control

A PLC (Programmable Logic Controller) based real time simulation and test strategy for the industrial process control has been proposed. Different stages of system design and test are achieved to fulfill requirements of the industrial process control. The on-line and real time simulation system provides a platform for verifying accuracy and reliability of user control codes. It is not only for normal operations, but also for abnormal sequence inspections. According to the experience of a real industrial project, it is proved to shorten a large amount of commissioning and debugging time for implementing a control system. By the flexibility and operability of a HMI console, training measures can be put into practice in the dedicated simulation environment instead. Risks are considerably diminished and the efficiency of project development is improved as well.

Nucleation and dynamics of dislocations in mismatched heterostructures

AbstractIn this paper we have investigated, through computer simulations, dislocation nucleation and dislocation dynamics in a heterostructure system with the lattice-mismatch interface, i.e. a system with internal strain. In particular, we have studied the dependence of the nucleation thresholds on the basic parameters of the crystals, such as the amount of mismatch and the system temperature. These studies have been carried out by using the simulation code with a graphical user interface developed at our laboratory. This on-line simulation system produces a real time interactive visualization of the 3-D Molecular Dynamics model. Furthermore, it detects the presence of dislocations and tracks them by an algorithm based on potential energy mapping.

Simulation of the development automatization control system for rare earth extraction process: Combination of ESRECE simulation software and EDXRF analysis technique

Recently, the requirement of developing the automatic control for rare earth extraction processes has been attracting a lot of attention. However, due to the similarity of chemical physical properties of rare earth, the separation of these elements requires a great number of stages of mixer-settles. The multistage countercurrent extraction system, consisted of two immiscible flowing phases—the organic phase and the aqueous phase and the variable composition take place stage by stage. This plant generally requires a continuous control the status of the separation process and its efficacy, in order to prevent appearing an ‘out-of-specification product’ or a high raffinate value. For studying the steady or dynamic performance of stage-wise processes, and establishing the relative controlling system, the on-line EDXRF analytical technique and ESRECE simulation system were used in our laboratory.

Targeting the Development of a Virtual Microscope

As one of the goals of molecular simulation packages, an on-line simulation system named a virtual microscope is developed, in which chemical reactions are reproduced numerically on supercomputers based on quantum mechanics and Newtonian physics, and then motions of the nuclei and electrons are displayed on the computer graphics. To achieve the virtual microscope, the ab initio molecular orbital (MO) theory is unified with molecular dynamics, since the proper forces acting on the nuclei are obtained by the energy gradient method in the ab initio MO scheme. In the virtual microscope, the viewing position is interactively changed during the simulation so as to chase the key atoms in that reaction. The functionality of the virtual microscope is given in this article along with the system organizations and sustainable performance of the numerical portions.

デジタル微分解析法とデジタル制御型機械式加力装置を用いた2方向地震力を受ける1層立体架構のオンライン地震応答載荷実験 : 第1報 システムの開発

This paper describes a new technique for ON-LINE simulation system for solving a dynamic response of a single story three dimensional frame subjected to a bi-directional ground motion. The system of which is composed of three actuators and a DDA simulator. The accuracy of the proposed technique was examined through ON-LINE expriments of steel elastic frames with and without eccentricity.

デジタル微分解析器とデジタル制御型機械式加力装置を用いた多自由度振動系のオンライン地震応答載荷実験 : 第2報 多層せん断型架構への拡張

In this paper, the authors have presented a generalized method for solving a non-linear response of multi-degrees of freedom structure based on a newly developted ON-LINE simulation system, which is composed of digital actuators and a digital differential analyzer. In order to examine the efficiency of this system, a series of on-line experiments have been conducted using a two and a three-storied steel building model. The test results have shown that the response obtained by the proposed technique agrees fairly well with a numerical analysis using a simple elasto-plastic hysteretic model.

Manufacturing system application of a knowledge based simulation

The flexibility in a modern manufacturing facility introduces complexity to the decision making. The requirement for a real time control mechanism results in a need for an on-line simulation system that can simulate the complicated scheduling, routing and similar decisions required by the system. This paper describes a knowledge-based simulation and control system written in PROLOG. This system is composed of four parts: a static data base, a dynamic database, a modeling knowledge part, and a simulation driver. The simulator contains the actual control mechanism of the physical system and can be removed from the system in order to simulate it. The manufacturing system under investigation is a combination of flexible manufacturing cells that feed an automated assembly station. The knowledge-based simulation helps to develp and understand control mechanisms for that system, which can later be implemented in the physical system as the controller.

地震力を受けた鉄骨モデル部材のX線観察

The purpose of this study is to investigate the behavior of steel structures subjected to a strong earthquake and to evaluate the damage from a microscopic point of view. For this purpose, the authors have adopted two kinds of research techniques. The first is the "ON-LINE EARTHQUAKE RESPONSE SIMULATION SYSTEM (ON-LINE SIMULATION SYSTEM)", which is composed of an electro-hydrauric testing machine controled by a computer and a full scale specimen. Since a term of restoring force in the equation of motion is to be substituted by the actual reaction of a specimen under test, we can obtain the non-linear response of structure without any assumption about the hysteretic characteristics. Based on this method, the dynamic behavior of simple steel structures subjected to an intense earthquakes were simulated. The second technique is the "X-RAY DIFFRACTION METHOD". Although this method is usually regarded an experimental technique particular to the material science, we have realized the good applicability for the study of structural engineering, Because X-ray diffraction method is advantageous in investigating the microscopic behavior of steel member such as the plastic deformation and the low cycle fatigue. From the view point stated above, we have adopted this method for the evaluation of low cycle fatigue damage of steel member subjected to an earthquake. The experiment has been performed by radiating the X-ray at several stages of the ON-LINE SIMULATION. As has been expected, the X-ray diffraction patterns have changed in a regular manner depending on the degree of fatigue damge, and the results have shown a good possibility that the X-ray diffraction approach can offer a powerful tool for the detection of the earthquake damage of steel members.

Evaluation of a multifunctional hand prosthesis system using EMG controlled animation.

In this communication, we present an on-line real-time simulation system used to evaluate a new method of controlling a multifunctional hand prosthesis. The system employs two computers. Acquisition, analysis, and classification of EMG signals are performed by a minicomputer, and the animation model of the hand prosthesis which is displayed on a monitor TV is controlled by a microcomputer. From three EMG signals picked up from the most suitable muscles of the forearm, three amplitude and three frequency components are derived. Six voluntary movements are then classified by the use of a pattern recognition technique based on the linear discriminant analysis method. Besides the six basic motions, the model can also make eight combined motions using the method of selecting control signals. The experimental results tested on healthy adults indicated that recognition rate was above 90 percent, and nearly 100 percent in some of the better cases. Then the subjects could easily operate the model on the TV screen.

ハイブリッド方式のオンライン地震応答載荷実験法の開発と若干の動的実験第 1 報

The author's group has developed a method of analysis to find nonlinear earthquake response of structures by using an on-line real-time hybrid simulation system composed of an analogue computer, an 8-bit microprocessor, and full-scale steel structural members. Details of the system and the computing method of an equation of motion are described herein. Since the restoring forces of a non-linear structure are actually too complicated to assume the proper mathematical model, it is much more reasonable that the real responses of the structure are computed by using the actual restoring forces than making any assumption of hysteretic force deflecton relations. Therefore, in this system, the restoring forces obtained from the experiment of a real structural member were substituted into the term of the equation of motion. Based on this approach, the non-linear seismic behaviors of single degree-of freedom structural frame subjected to strong motion earthquakes were experimentally simulated by the foregoing system. And were investigated the relations between the non-linear responses and the natural period of the structures, of the intensity of the input accelerations.