• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2009년도 학술대회
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• pp.94-98
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• 2009

메이저리그 야구 중계 등 해외 스포츠 중계제작에서 해결해야 할 문제 중 하나는 MPH(miles per hour)와 같이 영미식 단위로 표시된 자막을 국내 실정에 맞게 km/h 등으로 변환하는 것이다. 이를 위해 중계화면에 표시된 자막영역의 변화로부터 해당 자막이 표시되었음을 감지하고 숫자 정보를 인식하여 이를 국내실정에 맞는 SI 단위로 변환하는 스포츠 자막 인식 시스템을 개발하였다. 변환된 자막은 후단의 문자발생기 (CG) 시스템으로 전달되어 최종적으로 TV 화면에 표시된다. 일반적으로 문자 인식에 주로 사용되는 신경망(neural networks) 기반 방식은 사전에 유사 데이터를 이용한 신경망의 학습(training) 과정이 필수적으로 요구되며, 또한 학습에 사용된 데이터와 다른 모양의 자막이 예고 없이 사용되었을 경우 대처할 수 없다는 단점이 있다. 생방송이라는 사용 환경을 고려하여 새로운 폰트로 제작된 자막에도 신속하게 대처할 수 있는 템플릿 매칭(template matching) 방식을 사용하였다. 여러 가지 실험 영상으로 테스트한 결과 97% 이상의 정확한 인식 결과를 얻었으며, 정확성을 요하는 생방송의 특성상 매칭의 확신도(confidence)가 높지 않은 경우에는 작업자가 판단한 후 핫키를 이용하여 정확한 자막을 출력할 수 있게 하였다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1987년도 한국자동제어학술회의논문집(한일합동학술편); 한국과학기술대학, 충남; 16-17 Oct. 1987
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• pp.905-908
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• 1987

A human operator has the ability to control a complicated system such as a gantry crane, an aircraft and a remote manipulator after enough training and learning. In this article, we attempt the positioning experiment of a flexible arm by a human operator. Flexible arm has nonlinearlity and infinite-degrees of freedom in general; thus it is difficult to obtain a control input. The operator interprets a given task and finds the procedure of operations. He devises an effective way of achieving the goal on the basis of his experience and knowledge about the task.

• 한국조리학회지
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• 제4권
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• pp.25-42
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• 1998

In order to promote a foodservice professionally, the operator must carefully plan of enterprise goals and how to meet them. This is especially truth of foodservices in which both production and service aspects take place under one roof. In such a case, the foodservice operator sells products and services not just one. It is up to the foodservice operator to package the products and services in a manner that is most pleasing customers. The first stop here is to determine who the customers are and what hey want. The process of answering these questions and developing a program to meet the needs identified is called marketing. This study deals primarily with internal promotional concepts, in this study it is important to cover a few of the basic concepts of marketing as well. Thus this study is try to present the merchandising food. In this study, the merchandising food is based on training employees, planning special promotions, featuring special menu items, creating atmosphere, developing good public relations using promotional materials.

• Nuclear Engineering and Technology
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• 제48권1호
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• pp.129-143
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• 2016

Sometimes, we need or try to figure out somebody's thoughts from his or her behaviors such as eye movement, facial expression, gestures, and motions. In safety-critical and complex systems such as nuclear power plants, the inference of operators' thoughts (understanding or diagnosis of a current situation) might provide a lot of opportunities for useful applications, such as development of an improved operator training program, a new type of operator support system, and human performance measures for human factor validation. In this experimental study, a novel method for inference of an operator's thoughts from his or her eye movement data is proposed and evaluated with a nuclear power plant simulator. In the experiments, about 80% of operators' thoughts can be inferred correctly using the proposed method.

• Journal of Information Processing Systems
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• 제11권4호
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• pp.630-642
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• 2015

In Jøsang's subjective logic, the fusion operator is not able to fuse three or more opinions at a time and it cannot consider the effect of time factors on fusion. Also, the base rate (a) and non-informative prior weight (C) could not change dynamically. In this paper, we propose an Improved Subjective Logic Model with Evidence Driven (ISLM-ED) that expands and enriches the subjective logic theory. It includes the multi-agent unified fusion operator and the dynamic function for the base rate (a) and the non-informative prior weight (C) through the changes in evidence. The multi-agent unified fusion operator not only meets the commutative and associative law but is also consistent with the researchers's cognitive rules. A strict mathematical proof was given by this paper. Finally, through the simulation experiments, the results show that the ISLM-ED is more reasonable and effective and that it can be better adapted to the changing environment.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2014년도 추계학술대회
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• pp.44-46
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• 2014

최근 DPO (Dynamic Positioning Operator) 자격증을 취득하고자 하는 해기사가 급증하고 있다. 그러나 우리나라에는 취득과정에 필수적인 승선실습을 제공할 수 있는 선박이 거의 없기 때문에 취득까지 많은 시간과 노력을 필요로 하게 되며, 때로는 중도에 포기하는 경우도 발생하고 있다. 이러한 어려움을 완화하고 보다 더 많은 해기사가 DP 선박에 진출할 수 있도록 하기 위하여 DPS (Dynamic Positioning System)를 설치한 실습선이 적극 검토되고 있다. 이러한 요구에 발맞추어 이 논문에서는 실습선에 탑재할 DPS의 요건에 대하여 제안한다.

• 한국항해학회지
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• 제20권4호
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• pp.7-44
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• 1996

The purpose of this study is to develop the training programme for VTS operators in Korea. The methodology used are literature and questionnaire survey. The literature, proceedings of international symposia and letters from Canada, USA, Japan and other countries were properly used and analyzed in order to compare their contents. Through the results of this study, I proposed the basic training programme for VTS operators in Korea as followings. First, the number and level of Korean VTS should be properly decided. Second, the training organization and staff should be built and appointed. Third, the VTS trainee should selected, and the training level & period should be established according to their qualification and experience. Fourth, the training should be acted by the VTS training curriculum. Fifth, The VTS operator certificate should be issued through proper test. This paper concluded as followings through the analysis of the questionnaire regarding to VTS training programme in Korea. First, the proposed curriculum were properly constructed and the independence among them was existed through the reliability and correlation analysis. Second, the difference of the curriculum importance among the questionnaire group was nearly not found through the Analysis of Variance(ANOVA). Third, the required days per each curriculum was limited to maximum 5days.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 하계학술대회 논문집 A
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• pp.163-165
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• 2003

In order to improve the power restoration capability of system operators In case that the fault and blackout happen in the power system, Development of the Power Restoration Training System is necessarily required as a simulator tool for training operator. Owing to these reasons, KEPRI has developed the power restoration training system and graphic editor and applied it to Jeju transmission system. This paper presents the design and implementation of the system, and shows a example to simulate the primary restorative line in jeju.

• Nuclear Engineering and Technology
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• 제51권6호
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• pp.1554-1560
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• 2019

Development of digital main control rooms (MCRs) has greatly changed operating environments by altering operator tasks, and thus the unique characteristics of digital MCRs should be considered in terms of human reliability analysis. Digital MCR tasks can be divided into primary tasks that directly supply control input to the plant equipment, and secondary tasks that include interface management conducted via soft controls (SCs). Operator performance regarding these secondary tasks must be evaluated since such tasks did not exist in previous analog systems. In this paper, we analyzed SC-related tasks based on simulation data, and classified the error modes of the SCs following analysis of all operational tasks. Then, we defined the factors to be considered in human reliability analysis methods regarding the SCs; such factors are mainly related to interface management and computerized operator support systems. As these support systems function to reduce the number of secondary tasks required for SC, we conducted an assessment to evaluate the efficiency of one such support system. The results of this study may facilitate the development of training programs as well as help to optimize interface design to better reflect the interface management task characteristics of digitalized MCRs.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2010년도 추계학술대회 초록집
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• pp.75.1-75.1
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• 2010

This research presents a fuel cell simulator for control logic verification and operator training. Nowadays, power industries are focusing on clean energy as a response to new policy. The fuel cell can be the solution for clean energy, but operating technology is not well developed compared to other conventional power plans because of its short history. Therefore we need a simulator to verify the new control strategy and train operators, because the price of a real fuel cell system is too high and mechanically weak to be used for these kind of purposes. To develop the simulator, a 300 KW MCFC(Molten Carbonate Fuel Cell) system was modeled with stack, BOPs(pre-reformer, steam generator, etc) and mechanical components(valves, pipes, pumps, blowers, etc). The process model was integrated to emulated control system and HMI(Human Machine Interface). A static load and open loop tests were conducted for verifying the accuracy of the process model, since it is the most important part in the simulation. After verifying the process model, an automatic load change and start-up tests were conducted to verify the performance of a new control strategy(logic and functional loops).