• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2005년도 추계학술대회 논문집
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• pp.23-28
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• 2005

In Part I (theoretical study) of the paper, a new adaptive autopilot for ships based on Adaptive Neural Networks was proposed. The ANNAI autopilot was designed for course-keeping, turning and track-keeping control for ships. In this part of the paper, to show the effectiveness and feasibility of the ANNAI autopilot, computer simulations of course-keeping and track-keeping tasks with and without the effects of measurement noise and external disturbances are presented. Additionally, the results of the previous studies using Adaptive Neural Network by backpropagation algorithm are also showed for comparison.

• 한국항해항만학회지
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• 제29권9호
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• pp.771-776
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• 2005

This paper presents a new adaptive autopilot for ships based on the Adaptive Neural Networks. The proposed adaptive autopilot is designed with some modifications and improvements from the previous studies on Adaptive Neural Networks by Adaptive Interaction (ANNAI) theory to perform course-keeping, turning and track-keeping control. A strategy for automatic selection of the neural network controller parameters is introduced to improve the adaptation ability and the robustness of new ANNAI autopilot. In Part II of the paper, to show the effectiveness and feasibility of the proposed ANNAI autopilot, computer simulations of course-keeping and track-keeping tasks with and without the effects of measurement noise and external disturbances will be presented.

• 한국심리학회지ㆍ건강
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• 제19권4호
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• pp.929-955
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• 2014

본 연구에서는 대학에서 개설된 자기관리 수업이 첫째, 수강생들의 목표행동의 개선과 충동성 감소에 효과적인지 확인하고, 둘째, 목표로 하지 않았던 행동에도 긍정적인 영향을 미치는지(일반화)를 목표행동 유형(운동, 식습관, 학습, 긴장습관, 기타 행동)에 따라 살펴보았다. 마지막으로 이러한 변화가 충동성의 감소로 인해 발생했는지를 조사하였다. 본 연구의 참가자는 한 대학교에서 자기관리 수업을 수강하면서 행동수정 프로젝트를 수행한 128명이었다. 수강생들은 학기 초와 학기 말에 자기보고식 충동성 척도와 충동성 측정 행동과제인 지연 디스카운팅 과제(delay discounting task), 그리고 음주, 운동, 식습관, 학습, 시간관리 분야에서의 자기통제력을 측정하는 일반적 자기통제행동 척도에 응답하였다. 그리고 수강생들은 한 학기 동안 목표행동을 정하고 행동수정 프로젝트를 통해 자신의 행동 변화를 직접 관찰하고 기록하였다. 연구 결과, 수강생의 63%가 자기관리 수업을 통해 성공적으로 목표행동을 달성하였다. 그리고 목표행동에 따라 차이는 있었으나 목표행동을 달성한 집단은 다양한 분야의 자기통제행동의 향상과 충동성의 유의한 감소를 보고하였다. 다음으로, 적어도 운동과 식습관 집단에서의 충동성의 감소는 자기통제의 일반화를 유의하게 예측하였다. 이러한 결과는 충동성의 향상이 다양한 자기통제행동의 개선으로 이어짐을 보여주며, 자기통제력의 일반화를 시사한다. 이와 같은 의의와 더불어 한계점 및 후속 연구를 위한 제언을 논의하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 하계학술대회 논문집 A
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• pp.41-43
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• 2001

This paper presents a Web-based educational tool for Power System Engineering, especially for power engineers. This tool has Web-oriented educational courses for power system education. The Web-based learning has become more popular year by year in the various fields[1-2]. The proposed educational tool provides some courses such as power system introduction Course, KEPCO's system introduction Course, Power system devices Course, Power Flow Course, OPF Course, ELD Course, Stability Analysis Course, Fault analysis Course, Voltage & Frequency control Course, and power system planning & operation Course. Finally, it will be scheduled to install for the education tool of the power system engineering for KEPS[3].

• 대한조선학회논문집
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• 제47권3호
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• pp.462-468
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• 2010

A new course keeping controller for RIB(Rigid Inflatable Boat)-type USV(Unmanned Surface Vehicle) is developed using pilot's steering pattern. A pilot's simple steering pattern is found out from various course change tests. It is used to course keeping algorithm, suitable for large course change more than 60 degrees. To validate the course keeping controller, sea trial tests are conducted. From sea trial test, new course keeping controller shows good performance with less overshoot, maximum roll angle less than $20^{\circ}$, which makes it possible that fast course changes without slip motion of USV.

• 공학교육연구
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• 제19권5호
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• pp.72-77
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• 2016

The flipped learning is currently suggested in engineering education, and several universities already have used it. However, research rarely examines whether using such special method in engineering education is effective to improve students' learning achievement. To illuminate this issue, we collected the data of students' achievement for two years from students who took system modeling and control course and analyzed them. Overall, the flipped learning is statistically effective to improve students' learning achievement about system modeling and control.

• 아시안잔디학회지
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• 제15권1호
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• pp.1-8
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• 2001

Antifungal activity of 20 chemicals registered to turfgrass diseases was evaluated. Among the chemicals, iprodione, benomyl, iprodione+thiram, pencycuron+tebuconazole, hexaconazole, and iprodione+thiophanate-methyl exhibited high antifungal activity to the dollar spot fungus. All isolates were greatly inhibited by the chemicals at the concentration over 32ppm($\mu\textrm{g}$/ml). However, sensitivity of the isolates to chemicals was varied at the lower concentration as 8 and 16 ppm as follows. The isolate originated from Ora golf course was resistant to iprodione and iprodione+thiophanate methyl, Gonjiam isolate to iprodion, Youngpyung isolate to iprodione+thiram, and Dogo isolate to iprodione+thiram, pencycuron+tebuconazole, and tebuconazole. It was found from this study that the varied chemical resistance among the isolates was positively related to the application time of the chemical in the golf course. Consequently, when a chemical was applied more often times than the others to the golf course, the fungal isolates originate from the field showed higher resistance to the former chemical. Effects of the chemicals on control of the dollar spot was evaluated in the field. All tested chemicals revealed over 70% disease control efficacy, however, mepronil+propiconazole was the best showing 83% control efficacy and followed by fenarimo, iprodione, terbuconazole, thiram, and thiophanate-methyl.

• 대한간호학회지
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• 제34권3호
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• pp.412-420
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• 2004

Purpose: The purposes of this study were to: (a) develop a comprehensive communication course combined with a group program for improving communication skills; and (b) examine the effects of the comprehensive communication course on interpersonal communication, relationship change, self-esteem, and depression in nursing students. Method: The experimental group consisted of 82 nursing students, and the control group, 108 nursing students. Both groups each took communication courses from March to June, 2002 and 2003. A group program for improving communication skills was conducted for each 8 subgroups of the experimental group for 90 minutes once a week during the 6 weeks, while the existing communication lecture was conducted for the control group. Both groups were post-tested after the intervention for verifying the difference of variables between the two groups, and the experimental group was also pre-tested for verifying the difference between before and after the treatment. Result & Conclusion: Interpersonal communication score of the post-test in the experimental group was significantly higher than in the control group and the depression score of the post-test in the experimental group was significantly lower than in the control group. Interpersonal communication, relationship change and self-esteem scores were significantly increased and the depression score was significantly decreased in experimental group after the treatment. In conclusion, the comprehensive communication course that was developed in this study had positive effects on communication skills in nursing students.

• 한국실내디자인학회논문집
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• 제20호
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• pp.3-9
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• 1999

The purpose of this study was to verify the stability of environmental disposition through analyzing the short term effect of the 'Interior Design History' course on students environmental dispositions, especially their interior image preferences toward traditional/modern, female/masculine, and simple/complex characteristics. The pre-test post-test control group experimental design was used. The independent variable was the experience of the Interior Design History course, and the dependent variable was environmental disposition measured by IIPS(Interior Image Preference Scale). The measurements were done at both beginning and end of fall semester, 1997. Subjects were using 71 undergraduate students of Drafting course (control group) and 35 undergraduate students of Interior Design History course (experimental group) at Y University. Data were analyzed using frequency, percentage, mean, and F-test through ANOCOVA. This research revealed no effect of the Interior Design History course on students interior environmental dispositions. The stability of those environmental dispositions and also the validity of the IIPS were proved.

• 아시안잔디학회지
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• 제26권2호
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• pp.96-101
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• 2012

Sclerotinia homoeocarpa F.T. Bennett에 의한 동전마름병은 우리나라에서 가장 흔하며 경제적으로 매우 중요한 잔디병이다. 크리핑벤트그래스로 조성된 골프장 그린에서 propiconazole, thiophanate-methyl, chlorothalonil, trifloxystrobin, boscalid를 이용하여 방제효과를 평가하였다. 또한 propiconazole과 다른 4개의 약제를 각각 혼용하여 단용처리구 대비 상승효과를 조사하였다. 동전마름병은 2개 포장의 무처리구에서 각각 평균 18.3, 66.7%의 발생을 보였다. 약제의 약효는 병 발생정도에 따라 다르게 나타났다. 살균제를 단독으로 처리하였을 때 방제 효과는 발병도가 높았을 때보다 낮았을 때 우수하였다. 처리된 살균제 중 boscalid의 효과가 가장 높았다. 살균제 혼용처리구에서는 propiconazole + thiophanate-methyl 처리구를 제외하고 단독처리구 대비상승효과가 발견되었으나, 2개 포장 모두 혼용처리구 사이에 통계적인 유의성은 발견되지 않았다. 따라서 현장에서 동전마름병 방제 시 병 발생 조건에 따라 방제전략을 달리해야 할 것으로 보여진다.