• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
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• pp.905-907
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• 2005

In this paper, we propose the system that can monitor and control the camera in the remote place using the PDA. The server PC attached to the PLC (Programmable Logic Controller) acquires the current status (On/Off) of the devices through the RS-232 serial communications. Also, the moving image frames captured from the wireless camera is compressed in the JPEG format and is stored in the server. The PDA, which is connected to the server through wireless internet, receives the data about the status of the devices and controls the devices according to the circumstances of them. Also, it can receive the images from the server simultaneously. So, we ran monitor and control the specified area in the remote place using the PDA through the wireless communication.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 D
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• pp.3117-3119
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• 2005

In this paper, we propose the system that can monitor and control the camera in the remote place using the PDA. The server PC attached to the PLC (Programmable Logic Controller) acquires the current status (On/Off) of the devices through the RS-232 serial communications. Also, the moving image frames captured from the wireless camera is compressed in the JPEG format and is stored in the server. The PDA, which is connected to the server through wireless internet, receives the data about the status of the devices and controls the devices according to the circumstances of them. Also, it can receive the images from the server simultaneously. So, we can monitor and control the specified area in the remote place using the PDA through the wireless communication.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 C
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• pp.2465-2467
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• 2005

In this paper, we propose the system that can monitor and control the camera in the remote place using the PDA. The server PC attached to the PLC (Programmable Logic Controller) acquires the current status (On/Off) of the devices through the RS-232 serial communications. Also, the moving image frames captured from the wireless camera is compressed in the JPEG format and is stored in the server. The PDA, which is connected to the server through wireless internet, receives the data about the status of the devices and controls the devices according to the circumstances of them. Also, it can receive the images from the server simultaneously. So, we can monitor and control the specified area in the remote place using the PDA through the wireless communication.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 B
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• pp.1823-1825
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• 2005

In this paper, we propose the system that can monitor and control the camera in the remote place using the PDA. The server PC attached to the PLC(Programmable Logic Controller) acquires the current status(On/Off) of the devices through the RS-232 serial communications. Also, the moving image frames captured from the wireless camera is compressed in the JPEG format and is stored in the server. The PDA, which is connected to the server through wireless internet, receives the data about the status of the devices and controls the devices according to the circumstances of them. Also, it can receive the images from the server simultaneously. So, we can monitor and control the specified area in the remote place using the PDA through the wireless communication.

• 한국가정과교육학회지
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• 제27권1호
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• pp.51-65
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• 2015

본 연구는 "가정과 논리 및 논술" 교과목의 운영 실태와 이 과목을 수강한 가정교육과 재학생의 인식을 알아보는데 목적이 있다. 이를 위해 전국 사범대학 가정교육과에서 개설된 "가정과 논리 및 논술" 교과목의 강의계획서를 수합하여 내용 분석하였다. 이를 바탕으로 설문지를 구성하여 사범대학 가정교육과에 재학 중인 학생 가운데 이 교과목을 수강한 학생들을 대상으로 설문조사를 실시하였다. 전체 응답자는 116명이며, SPSS/WIN 21.0으로 분석하였다. 본 연구의 주요결과는 다음과 같다. 첫째, "가정과 논리 및 논술"의 강의계획서 분석 결과, 교과목의 목표는 가정교육과와 관련된 다양한 주제에 대한 논리적 서술 능력 함양의 목표가 가장 많았고, 다음으로 논리적인 설득력 강화를 통한 가정과교사의 전문성 향상, 논리적 글쓰기 함양, 임용고사 준비, 그리고 학교 현장에서 학생들의 글쓰기를 잘 지도할 수 있는 능력 함양의 순이었다. 이 교과목에 대한 강의내용은 가정교과 세부전공 중심의 글쓰기, 일반적인 글쓰기 기초, 가정과 임용고사 준비, 논리논술 관련 이론, 가정과 교육 관련 최근의 이슈, 중등학교 현장에서의 논술교육 및 논술지도 방안의 순이었다. "가정과 논리 및 논술" 강의의 학습평가방법은 대개 출석, 시험, 과제, 토론 및 발표, 수업참여를 중심으로 제시되었으며 이 교과목의 과제는 모두 '글쓰기'였다. 둘째, "가정과 논리 및 논술"과목을 수강한 학생들의 인식 조사에서 강의목표에 대한 만족도가 가장 높았으며, 학습평가방법에 대한 만족은 가장 낮았으나 모두 4점 만점에서 2점 이상으로 나타나 수강생들은 이 교과목에 대해서 대체로 만족하였다. 셋째, 가정교육과 재학생들은 "가정과 논리 및 논술" 교과목이 논리적 비판적 분석 능력의 향상, 가정과교육 및 교육학 관련 글쓰기 실력의 향상, 그리고 자신의 생각을 정확하고 체계적으로 표현하는 능력의 향상이 도움이 되었다고 하였다. 이 교과목 수강 시 어려운 점에 대하여 글쓰기 연습이 가장 어려웠고, 다음으로 잦은 토의 및 토론활동, 모호한 학습평가방법 기준, 빈번한 발표, 교수자의 피드백 부족, 과도한 과제, 어려운 강의내용 순으로 인식하였다. 결론적으로, "가정과 논리 및 논술" 교과목은 논리적 비판적 사고력을 키워 가정과교육에 대한 이해를 넓히는 것을 목표로 하는데, 조사결과 본 교과목은 비교적 목표에 잘 부합되게 운영되고 있었다. 다만 교과교육학영역에 '논리 및 논술에 관한 교육'이 신설된 이후 임용시험 유형도 논술형으로 바뀌면서, 학생들은 이 교과목에서 임용시험을 대비할 수 있기를 기대하고 있다. 따라서 "가정과 논리 및 논술" 교과목의 특성과 목표를 유지하면서 학생들의 임용시험 준비에 대한 요구를 제대로 반영하여 이 교과목에 대한 운영을 보완하여야 할 것이다.

• 전기전자학회논문지
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• 제22권3호
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• pp.680-692
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• 2018

Children's health is interesting to parents and society. A system that assists to monitor the development of their children and gives nutritional advices is an interesting of parents. In this study, we present a system that allows to track the heights and weights of a child since he/she was born up to adulthood, to predict his age of puberty, and to provide nutritional advice. Particularly, it predicts the height in near future and the adult stature for detecting the child with abnormal development. We applied Sager's model for predicting the height in near future by using interpolation and regression techniques before puberty. After determining the puberty time, we proposed a model for predicting the height. Then we applied fuzzy logic for evaluating the health status and providing nutritional advice. Our system predicted stature in near future with error bound of $1.7361{\pm}0.0397cm$ in girls and $2.4020{\pm}0.0799cm$ in boys. Our model also gave a reliable adult stature prediction with error bound of $0.3507{\pm}0.2808cm$ in girls and $1.3414{\pm}0.7024cm$ in boys. At the same time, the nutrition was provided appropriately in terms of protein, lipid, glucid. We implemented a program based on this research. Our system promises to improve the health of every child.

• 논리연구
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• 제22권1호
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• pp.125-150
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• 2019

정합성 이론이 정당화 이론으로서 적절하기 위해서는 그 이론에 의해 이해된 정당화가 진리개연적이어야 한다. 그러나 정합적 정당화가 어떻게 진리개연적인지 분명치 않다. 이것이 정합성 이론이 직면하는 이른바 진리개연성 문제이다. 필자는 2017년 논문에서 셀라시언 정합성 이론과 진리의 축소주의를 결합함으로써 진리개연성 문제를 성공적으로 처리할 수 있음을 주장하였다. 이에 대해 석기용 교수는 그의 최근 논문에서 상호주관적 정당화와 객관적 정당화를 나눌 실질적인 방법이 없기 때문에 필자의 제안이 진리개연성 문제를 해결하는 데 실패함을 주장한다. 이 논문에서 필자는 석 교수의 비판이 왜 옳지 않은지를 밝힘으로써 필자의 견해를 좀 더 명료하게 설명한다. 특히 그의 비판이 어떤 믿음이 객관적으로 정당화되기 위해서 단지 상호주관적 정당화의 단계에 머물러서는 안 되고, 객관적 정당화의 단계로의 질적 전환이 필요하다는 잘못된 가정에 기반을 둔 것임을 밝힌다.

• Nuclear Engineering and Technology
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• 제28권5호
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• pp.431-439
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• 1996

In the process of simplifying the complex fate of the plant into a binary state, the information loss is inevitable. To minimize the information loss, the quantification of plant safety status has been formulated through the combination of the probability density function arising from the sensor measurement and the membership function representing the expectation of the state of the system. Therefore, in this context, the safety index is introduced in an attempt to quantify the plant status from the perspective of safety. The combination of probability density function and membership function is achieved through the integration of the fuzzy intersection of the two functions, and it often is not a simple task to integrate the fuzzy intersection due to the complexity that is the result of the fuzzy intersection. Therefore, a methodology based on the Algebra of Logic is used to express the fuzzy intersection and the fuzzy union of the arbitrary functions analytically. These exact analytical expressions are then numerically integrated by the application of Monte Carlo method. The benchmark tests for rectangular area and both fuzzy intersection and union of two normal distribution functions have been performed. Lastly, the safety index was determined for the Core Reactivity Control of Yonggwang 3&4 using the presented methodology.

• Journal of Welding and Joining
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• 제16권3호
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• pp.129-140
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• 1998

An interface system was developed to offer the welding capability to a robot controller which had not any embedded function for arc welding before, and also an arc sensor algorithm was proposed for weld seam tracking of the welding robot. For the interface system between the robot controller and welding equipments, data communication software and interface connections were composed. The interface system was mae to correspond welding condition, correction data, operation sequence and current status with the robot controller by mutual had shaking and digital signal transfer. Graphic user interface program developed under the environment of windows made it easy to monitor data communication and operation status, and to control welding and sensing sequence. Arc sensing algorithm proposed in this study to compensate torch position error was based on a fuzzy logic with the variables of current difference and current differenced change at torch weaving extremities. The developed interface system could be successfully implemented in between welding equipments and the robot controller, and showed normal status and exact function in data and signal communication between the systems. The whole robot welding system was then examined to verify its welding and seam tracking capabilities in horizontal fillet, vertical fillet, and 3-dimensional fillet weldment. The experiments revealed sound weld bead shapes and also good seam tracing results.

• 한국물환경학회지
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• 제21권2호
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• pp.132-140
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• 2005

The pilot test of a new alternative for small wastewater treatment system has been conducted for two years. It consists of a hybrid bioreactor and the expert system including the process control logic, PLC system, and HMI for the process automation. In order to monitor and remote control its status, the real-time data was transferred from the on-site control center to the central station via a wireless local area network. More efficient and stable performances were observed at automatic operating mode compared with the manual. On an average, COD, SS, T-N and T-P concentrations in the effluent from the hybrid bioreactor were less than 14, 7, 12 and 0.9 mg/L, respectively. According to the result from pilot tests, the quality of treated wastewater with sand filtration was enough to be utilized again.