• Title/Summary/Keyword: virtual training

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Bead Visualization Using Spline Algorithm (스플라인 알고리즘을 이용한 비드 가시화)

  • Koo, Chang-Dae;Yang, Hyeong-Seok;Kim, Maeng-Nam
    • Journal of Welding and Joining
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    • v.34 no.1
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    • pp.54-58
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    • 2016
  • In this research paper, suggest method of generate same bead as an actual measurement data in virtual welding conditions, exploit morphology information of the bead that acquired through robot welding. It has many multiple risk factors to Beginners welding training, by we make possible to train welding in virtual reality, we can reduce welding training risk and welding material to exploit bead visualization algorithm that we suggest so it will be expected to achieve educational, environmental and economical effect. The proposed method is acquire data to each case performing robot welding by set the voltage, current, working angle, process angle, speed and arc length of welding condition value. As Welding condition value is most important thing in decide bead form, we would selected one of baseline each item and then acquired metal followed another factors change. Welding type is FCAW, SMAW and TIG. When welding trainee perform the training, it's difficult to save all of changed information into database likewise working angle, process angle, speed and arc length. So not saving data into database are applying the method to infer the form of bead using a neural network algorithm. The way of bead's visualization is applying the spline algorithm. To accurately represent Morphological information of the bead, requires much of morphological information, so it can occur problem to save into database that is why we using the spline algorithm. By applying the spline algorithm, it can make simplified data and generate accurate bead shape. Through the research paper, the shape of bead generated by the virtual reality was able to improve the accuracy when compared using the form of bead generated by the robot welding to using the morphological information of the bead generated through the robot welding. By express the accurate shape of bead and so can reduce the difference of the actual welding training and virtual welding, it was confirmed that it can be performed safety and high effective virtual welding education.

Development of a Virtual Bicycle Simulator for the Rehabilitation Training of Postural Balance (자세균형 재활 훈련을 위한 가상 자전거 시뮬레이터 개발)

  • Jeong, Sung-Hwan;Piao, Yong-Jun;Kwon, Tae-Kyu;Kim, Nam-Gyun
    • Journal of the Korean Society for Precision Engineering
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    • v.24 no.10
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    • pp.137-145
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    • 2007
  • The purpose of this study is developing a virtual bicycle system for improving the ability of postural balance control for adults in various age groups. The system consists of an exercise bicycle that allows tilt in accordance with the postural balance of the subject in the system, a visual display that shows virtual road, and a visual feedback system. The rider of the system tries to maintain balance on the bicycle with a visual feedback of a virtual road while the pedaling speed, the heading direction, and various weight distribution information are updated to the subject as visual feedbacks in the display. A series of experiments were performed with various subjects to find the factors related to postural balance control in the system. The related parameters obtained were weight shift, magnitude of the deviation from the center of the virtual road, and variables related to the movement of the center of pressure. The results found that the ability to control postural balance in the system improved with the presentation of visual feedback information of the distribution of weight. It was also found that the general performance of the subject on balance in the system improved after ten days long training. The results show that the newly developed system can be used for the diagnosis of postural balance as well as for the stimulation of various senses such as vision and somatic sense in the field of rehabilitation training.

A study on the actual precision shooting training based on virtual reality (가상현실 기반 실전적 정밀사격훈련 구현 연구)

  • Lee, Byounghwak;Kim, Jonghwan;Shin, Kyuyoung;Kim, Dongwook;Lee, Wonwoo;Kim, Namhyuk
    • Convergence Security Journal
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    • v.18 no.4
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    • pp.62-71
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    • 2018
  • The rapid growth of virtual reality technology in the era of the 4th Industrial Revolution has accelerated scientification of combat training systems in addition to ICT(information and communications technology) in military field. Recently, research and development of simulators based on virtual reality have been actively conducted in order to solve sensitive issues such as increase of civil complaints due to the noise of a shooting range, prevention of shooting accident, and reduction of training cost. In this paper, we propose two key solutions: spatial synchronization method and modified point mass trajectory model with small angle approximation to overcome technical limitations of a current training simulator. A trainee who wears a haptic vest in a mixed reality environment built in MARS(medium-range assault rifle shooting simulator) is able to conduct not only precision shooting but also two-way engagement with virtual opponents. It is possible for trainee to receive more reliable evaluations in the MARS than an existing rifle simulator based on laser.

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A Study of On-line Education on Training Effectiveness (온라인(on-line) 교육훈련의 효과성에 관한 연구)

  • 남기찬;임효창;황국재
    • Journal of the Korean Operations Research and Management Science Society
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    • v.27 no.1
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    • pp.75-94
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    • 2002
  • The development of Information technologies huts contributed on-line training as one of important education methods. On-line training In firms, which is similar to e-learning or virtual education, provides trainees with more education opportunities in diverse ways. It has developed a range of innovative services with an one-stop solution of education within the electronic sector. Also under the on-line training environment, trainees can undertake customized training packages at anytime and any places. Moreover, information technology allows both the trainers and other trainees to be decoupled in any of the elements of time, place, and space. Two research questions are investigated : what are the determinants affecting the on-line training effectiveness and how those variables effect the two aspects of training effectiveness: learning performance and transfer performance. Based on the previous literature conducted on the traditional training environment, the determinants of training effectiveness are derived. light hypotheses are developed based on literature reviews and tested by questionnaires survey data. The collected data have been analyzed by LISREL. It is found that the relationship between individual, organizational and on-line sloe design variables and training effectiveness (learning and transfer) are significant. The contribution and limitations of this research are also discussed tilth future studies.

Implementation of Diesel Engine Training Simulation based on Virtual Reality (e-Training 사례 : 가상현실 기반의 디젤엔진훈련 시뮬레이션 개발)

  • Song, Eun-Jee;Seo, Dong-Hee
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2015.05a
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    • pp.567-568
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    • 2015
  • 인터넷이 활성화 되면서 웹기반 교육으로 e-Training이 발전되었다. e-Training은 업무에 필요한 수행능력을 습득 향상 시키기 위하여 정보통신 기술, 장비, 환경을 활용하여 실시하는 교육훈련이다. e-Training에 포함되는 기술에는 시뮬레이션, 3D 가상현실, 증강현실 등이 있다. 본 연구에서는 가상현실 기반의 디젤엔진훈련 시뮬레이션을 개발하였다. 제안한 시스템은 3차원 디스플레이 시스템을 통해 몰입감과 상호작용 교육훈련방식을 도입하여 3D입체형 화면안의 시야가 실제 현실과 같은 몰입의 효과가 있으며 엔진부품의 이름과 기능 등을 게임화를 통해 교육 훈련하는 시스템으로써 시뮬레이션을 통해 필요한 문제풀이를 재미있게 할 수 있어 학습능률에 효과가 있다.

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Quantitative Analysis on the Improvement of Equilibrium Sensory Using Bicycle Simulator (자전거 시뮬레이터를 이용한 평형감각 증진의 정량적 분석)

  • 정성환;정우석;김경석;권대규;홍철운;김남균
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2004.10a
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    • pp.935-938
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    • 2004
  • This paper describes the quantitative analysis on the improvement of equilibrium sensory using virtual bicycle system. We have used a virtual bicycle system that combines virtual reality technology with a bicycle. In this experiment, 10 subjects were tested to investigate the influencing factors on equilibrium sensory. Straight road and curved road driving at several factors including cycling time, number of times of path deviation, and center of pressure(COP) were extracted and evaluated to quantify the extent of control. Also, To improve the effect of balance training, we investigated the usefulness of virtual feedback information by weight shift. The result showed that the system could be effective for equilibrium sensory rehabilitation training device. The analysis method might also have wider applicability to the rehabilitation field.

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Investigating Islamic Studies Teachers' Attitudes Towards Utilizing Virtual Learning Environment in Distance Teaching among Primary Stage Pupils

  • Osama Mohamed Ahmed Salem;Mohammed bin Muthayb Al-Baqami
    • International Journal of Computer Science & Network Security
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    • v.23 no.2
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    • pp.152-163
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    • 2023
  • This research aimed at investigating Islamic Studies teachers' attitudes towards utilizing virtual learning environment in distance teaching among primary stage pupils. It also aimed at determining the statistical differences among variables due to sex, educational qualification, number of years of experience, and training sessions. This research adopted the descriptive approach. The sample consisted of male and female primary teachers of Islamic Studies (N=250) in governmental schools in Taif. The questionnaire was used as a main research tool. It included (20) items. Results showed that Islamic Studies teachers' attitudes towards utilizing virtual learning environment in distance teaching among primary stage pupils were ranked to a medium degree. There was a statistically significant difference among primary Islamic Studies teachers' attitudes due to sex variable. It was recommended to adopt more training sessions and seminars for adopting the idea of utilizing virtual learning environments among Islamic Studies teachers at boys' and girls' school in Mecca through emphasizing its significance and benefits in Teaching.

A Study on the Effective Use of Virtual Reality for Improving Safety Training Systems (산업안전 교육시스템에서의 가상현실의 효과적 활용 방안에 관한 연구)

  • Baik, Ji-Min;Ham, Dong-Han;Lee, Yang-Ji
    • Journal of the Korea Safety Management & Science
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    • v.18 no.4
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    • pp.19-30
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    • 2016
  • This paper addresses the problem of how to effectively use virtual reality(VR) for improving the quality of safety training systems. As the working environment and the working system in the industry are more and more complex and large-scaled, the concern with system safety is accordingly growing. Safety training systems are regarded as an effective way for increasing workers' interest in system safety and enhancing their ability of preventing and handling accidents/incidents. Recently, it has been reported that VR would be effectively used for improving the quality of safety training systems, with its technically specialized features. However, little attention has been given to the problem of how to effectively use VR for safety training systems. In order to make the best use of new technology such as VR, it is important to examine its advantages and disadvantages and the contexts to which its use can be beneficial. This paper firstly reviews the current status of safety training systems and the use of VR for safety training systems in the inside and outside of the country. Next, we summarize the interview with safety managers in four manufacturing companies, which was conducted to understand the requirements of stake-holders of the issue. Based on the review and the interview, we suggested the ways of using VR in safety training systems in an effective manner. They are described from the four perspectives: development and maintenance cost, lack of specialized workers, design of accident scenarios used with VR, and empirical demonstration of the effectiveness of VR in safety training.

A Study on Sizing and Operational Policies for Building the Cloud Training Portal System of Cyber Universities (사이버대학의 클라우드 실습 포털 구축을 위한 규모 산정 및 운영 정책)

  • Park, Jung-Ho
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.15 no.1
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    • pp.171-178
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    • 2015
  • In these days, the practical training education is getting highlighted in IT curriculum. This study is for the Cloud computing based Virtual Desktop Service Plan of IT education and its efficient operation and management plan. With the implementation of a virtual lab environment system, the training environment which is customized by the curriculum is able to be provided. Also in the case of the limited system, the curriculum is able to be provided for each subject in advance. Therefore if the Cloud Training (or Practicing) Portal system for the multiple cyber universities is implemented according to this study's estimated scale and operation managing policies, the virtual training education service system could be provided in more efficient and more effective ways.

A Study on the Calibration of Simulation Characteristics of Live-Virtual Simulator System : To Impose Restrictions on a Maneuverability of a Simulated Aircraft Due to Pilot's G-force (Live-Virtual 시뮬레이터 모의특성 보정에 관한 연구 : 중력가속도에 따른 조종사의 기동제한 특성 기반)

  • Park, Myunghwan;Yoo, Seunghoon;Seol, Hyeonju;Kim, Cheonyoung;Hong, Youngseok
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.37 no.4
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    • pp.212-217
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    • 2014
  • Recently, Korea Air Force has been facing a lot of problems in its pilot training system such as training time shortage due to the expensive gas price, noise pollution and difficulties in finding airspace for training. To tackle these problems, a new training system (called L-V training system) using both aircraft and its simulator has been suggested. In the system, a data link is established between aircraft and simulator to exchange their flight information. Using the flight information of simulator, aircraft can perform various air missions with or against imaginary aircraft (i.e., simulator). For this system, it is crucially important that fair fighting condition has to be guaranteed between aircraft and simulator. In this paper, we suggested an approach to impose a maneuvering restriction to simulator in order to provide fair fighting condition between aircraft and simulator.