• 한국환경교육학회지:환경교육
• /
• 제19권1호
• /
• pp.64-79
• /
• 2006

This study was designed to make valuable suggestions for the development of environmental education(EE) teaching materials through teachers' and students' opinions. In the summer of 2005, an opinionnaire was sent to 1,749 secondary school EE teachers and 270 teachers of them answered. One hundred and six middle school students and 196 high school students in Kyunggi area were also participated in this survey. The opinionnaire in this study was based on the six standards, fairness and accuracy, depth, emphasis on skill building, action orientation, instructional soundness, and usability, developed by NAAEE(1998). Most teachers were totally dependent on textbooks in their teaching EE. They evaluated current EE textbooks most positively in the perspective of 'fairness and accuracy', whereas they evaluated them most negatively in the perspective of 'usability'. The problems of EE textbooks were differently recognized by teachers and students. The lack of contents stimulating students' interest was considered as the most serious problem of EE textbooks by students. Simultaneously, it was considered as the least serious problem of EE textbooks by teachers. Both EE teachers and students expect the future EE textbooks would consist of proper contents to reflect EE characteristics.

• 한국산학기술학회논문지
• /
• 제19권6호
• /
• pp.628-633
• /
• 2018

GNSS의 정확도는 사용되는 장비에서부터 자료처리에 이르기까지 여러 가지 요인에 의해 그 정확도가 달라진다. 이것은 GNSS에 의한 위치결정이 요구되는 정확도에 따라 다르게 활용될 수 있기 때문이다. 높은 정확도를 요구하는 기준점 측량의 경우는 상대측위 방식으로 측량을 수행하게 되며, 기준점의 등급에 따라 관측시간과 자료처리 s/w가 다르게 사용되고 있다. 그러나 학술용 s/w는 사용자의 숙련도에 따라 그 정확도가 크게 좌우될 수 있어 기선거리가 짧은 경우에는 상업용 s/w를 사용하는 것이 효율성 측면에선 더 나을 수도 있다. 이에 본 연구에서는 GNSS측량 데이터에 대해 학술용 s/w와 상업용 s/w를 이용 자료처리를 수행 그 결과를 비교하였다. 연구 결과 수평위치에서는 2cm 미만의 차이를 나타냈으며, 높이 성과에 있어서는 5cm 미만의 차이를 나타냈다. 이러한 차이는 통합기준점 측량 규정에서 명시하고 있는 오차 범위에 존재하는 것으로 나타났다. 이상의 결과를 토대로 장기선이 아닌 중단기선에서는 상업용 s/w를 활용하여 GNSS 자료처리에 사용할 수 있다는 것을 입증할 수 있었다.

• 대한공간정보학회지
• /
• 제24권1호
• /
• pp.121-128
• /
• 2016

많은 연구들에서 영상자료와 분류 알고리즘 측면에서 분류정확도를 비교하였지만, 참조자료 또는 분석자에 의존하는 훈련샘플에 의한 분류정확도 비교와 관련된 연구는 부족한 실정이다. 본 연구는 감독분류에 있어 훈련샘플로써 지상 분광반사자료의 유용성을 평가하고자 하였다. 이를 위하여 초분광영상과 다중분광영상을 대상으로 영상 수집 훈련샘플과 지상 분광반사자료를 사용하여 분류 정확도를 비교하였다. 그 결과 영상 수집 훈련샘플 사용 시 초분 광영상과 다중분광영상에서 공통적으로 약 90%의 분류정확도를 얻을 수 있었다. 그러나 지상 분광반사자료를 훈련 샘플로 사용하면 초분광영상의 경우 약 10%p, 다중분광영상의 경우 약 20%p의 분류정확도 감소가 발생하였다. 특히 다중분광영상에서 분광반사특성이 유사하게 나타나는 클래스들의 경우 분류정확도가 초분광영상에 비해 매우 낮게 나타났다. 따라서 지상 분광반사자료는 다중분광영상에 적용하는 데에는 한계가 있지만, 초분광영상을 이용한 토지피복분류에 있어 유용한 훈련샘플이 될 수 있다.

• 한국해양공학회지
• /
• 제35권4호
• /
• pp.273-286
• /
• 2021

In recent years, as human casualties and property damage caused by hazardous waves have increased in the East Sea, precise wave prediction skills have become necessary. In this study, the Simulating WAves Nearshore (SWAN) third-generation numerical wave model was calibrated and optimized to enhance the accuracy of winter storm wave prediction in the East Sea. We used Source Term 6 (ST6) and physical observations from a large-scale experiment conducted in Australia and compared its results to Komen's formula, a default in SWAN. As input wind data, we used Korean Meteorological Agency's (KMA's) operational meteorological model called Regional Data Assimilation and Prediction System (RDAPS), the European Centre for Medium Range Weather Forecasts' newest 5th generation re-analysis data (ERA5), and Japanese Meteorological Agency's (JMA's) meso-scale forecasting data. We analyzed the accuracy of each model's results by comparing them to observation data. For quantitative analysis and assessment, the observed wave data for 6 locations from KMA and Korea Hydrographic and Oceanographic Agency (KHOA) were used, and statistical analysis was conducted to assess model accuracy. As a result, ST6 models had a smaller root mean square error and higher correlation coefficient than the default model in significant wave height prediction. However, for peak wave period simulation, the results were incoherent among each model and location. In simulations with different wind data, the simulation using ERA5 for input wind datashowed the most accurate results overall but underestimated the wave height in predicting high wave events compared to the simulation using RDAPS and JMA meso-scale model. In addition, it showed that the spatial resolution of wind plays a more significant role in predicting high wave events. Nevertheless, the numerical model optimized in this study highlighted some limitations in predicting high waves that rise rapidly in time caused by meteorological events. This suggests that further research is necessary to enhance the accuracy of wave prediction in various climate conditions, such as extreme weather.

• Journal of the Korean Data and Information Science Society
• /
• 제24권2호
• /
• pp.369-377
• /
• 2013

이 연구는 미국여자프로골프협회 (LPGA)가 제공하는 경기 기술요인을 통해 어떠한 요인이 선수들의 성적에 가장 큰 영향을 미쳤는지 검증하였다. 이를 위해 2004년부터 2012년까지 총 9년 간의 성적자료를 분석에 사용하였으며, 분석대상선수들은 Top 10에 진입한 선수들의 경기 기술요인 사용하였다. LPGA가 제공하는 경기 기술요인 즉, 평균타수, Top10 진입횟수, 평균 퍼팅, 평균 버디, 평균 이글, 드라이버 비거리 및 드라이버 정확도, 그린 적중률, 샌드 세이브율, 그린적중률 당 퍼팅 수를 변인으로 설정하고 이들 변인이 시즌랭킹을 결정짓는 획득상금에 미치는 영향을 분석하였다. 자료처리는 SPSS 20.0을 이용하여 단계적 다중회귀분석을 실시하였으며, 그 결과는 다음과 같다. 최근 9년 간 LPGA Top 10 선수들의 성적에 가장 큰 영향을 미친 경기 기술요인은 평균타수, 평균퍼팅, 드라이버 비거리, Top 10 진입 횟수 순으로 나타났다. 또한 연도별로 살펴본 결과, 2004년 평균타수, 2005년 그린적중률, 2006년 평균 이글, 2007년 Top 10진입횟수, 2008년 평균타수, 2009년 평균퍼팅이 가장 큰 영향을 미친 경기 기술요인으로 나타났으며, 2010년은 평균타수, 그린적중률, 그린적중률당 퍼팅 수 순으로 나타났다. 2011년은 평균버디, 2012년은 그린적중률 당 퍼팅 수가 선수들의 시즌성적에 가장 큰 영향을 미친 것으로 나타났다.

• 한국응급구조학회지
• /
• 제7권1호
• /
• pp.43-54
• /
• 2003

The purpose of this study was to evaluate the accuracy of CPR skills and the satisfaction of CPR Training targeted for college students. Also, this study made comparative study of nursing students and non-nursing students. The sample consisted of 248 students(132 nursing students, 116 non-nursing students). CPR Training was designed by two components which were a lecture and demonstration by one professor and individual practice by instructors. As tool of measurement estimation satisfaction of CPR Training questionnaires were developed based on educated contents. The accuracy of CPR skills were checked by SkillReporter CPR training manikin. Collected data were computerized and analyzed by SPSS-WIN program. The results were as follows : 1. The skills of CPR were cardiac compression 92.79 times/min, correct cardiac compression rate 90.85%, ventilation 9.93 times/min, correct ventilation rate 79.34%. 2. The mean of the accuracy of CPR skills were 2.94(SD .87). 3. When errors were analyzed, the highest item was stomach distension(51.2%) of ventilation skills and too little(70.6%) of cardiac compression skills. 4. The mean of the satisfaction of CPR training were 2.87(SD .17), the highest item of the satisfaction of CPR Training was practice. 5. We found significant statistical differences based on the accuracy and the error, non-nursing students were high in correct cardiac compression per minute(t=3.615, p=.000) and ventilation too much(t=4.292, p=.000), nursing students were high in correct ventilation rate(t=-3.885, p=.000) and cardiac compression too shallow) t=-2.842, p=.005).

• 한국통신학회논문지
• /
• 제36권8B호
• /
• pp.979-985
• /
• 2011

오늘날 관계지수 또는 공존지수라 불리우는 NQ(Network Quotient)가 중요한 사회에 살면서 가장 중요한 것이 상대와의 대화가 되고 있다. 따라서 사회생활에 있어 정확한 발음을 구사하여 자신의 의견을 개진하고 의사 전달력을 극대화시키는 것이 대단히 중요한 항목이 되고 있다. 이를 위해 일상생활에서 자신의 의사 전달력을 높이기 위해 발음 체조 뿐 아니라 성대와 연계된 성대 반사점을 지압하는 행위 등 발음의 정확성을 향상시키고자 하는 노력이 이루어지고 있는 실정이다. 그러나 이런 노력들이 실제 정확한 발음을 향상시키는 역할을 하는지에 대한 객관화된 실증적 연구가 전무한 실정이었다. 따라서 본 논문에서는 IT 기술을 적용하여 발음 체조 등과 같은 방법들이 실제 발음 정확성의 향상에 도움이 되는지에 대한 효용성 입증 및 정량화를 위한 방법을 새롭게 제안하였다. 이를 위해 20대 남성 30명을 대상으로 성대 반사점 지압과 발음 체조를 수행하기 전과 후의 음성을 수집하여 음성 분석을 수행하였다.

• 턱관절균형의학회지
• /
• 제2권1호
• /
• pp.8-12
• /
• 2012

Objectives: It has been reported to continue that temporomandibular joint balancing medicine (functional cerebrospinal therapy; FCST) is effective in treating incurable diseases in clinic recently. FCST is based on the results of restricted cervical rotation test, it means that the results of restricted cervical rotation test has a very high reliability on test results. Methods: This study has the aim to understand restricted cervical rotation test method and to use well with high technical skill. So manual muscle test method which was based on the upper limb lifting resistance test method are compared with restricted cervical rotation test method and had been discussed. Results: Results are that restricted cervical rotation test by using the passive motion of arrested persons (patients) have high the reliability and accuracy. Conclusions: It is concluded that restricted cervical rotation test is the new type of manual muscle tests and the results of test are very high the reliability and accuracy so that the acquirement of test method is helpful in clinic practically.

• 한국지능시스템학회논문지
• /
• 제16권5호
• /
• pp.635-641
• /
• 2006

Ship's collision avoidance is a skill that masters of merchant marine vessels have acquired through years of experience and that makes them feel at ease to guide their ship out from danger quickly compared to inexperienced officers. Case based reasoning (CBR) uses the same technique in solving tasks that needs reference from variety of situations. CBR can render decision-making easier by retrieving past solutions from situations that are similar to the one at hand and make necessary adjustments in order to adapt them. In this paper, we propose to utilize the advantages of CBR in a support system for ship's collision avoidance while using fuzzy algorithm for its retrieval of similar navigational situations, stored in the casebase, thus avoiding the cumbersome tasks of creating a new solution each time a new situation is encountered. There will be two levels within the Fuzzy-CBR. The first level will identify the dangerous ships and infer the new case. The second level will retrieve cases from casebase and adapt the solution to solve for the output. While CBR's accuracy depends on the efficient retrieval of possible solutions to be adapted from stored cases, fuzzy algorithm will improve the effectiveness of solving the similarity to a new case at hand.

• 한국지능시스템학회:학술대회논문집
• /
• 한국퍼지및지능시스템학회 2006년도 추계학술대회 학술발표 논문집 제16권 제2호
• /
• pp.39-44
• /
• 2006

Ship's collision avoidance is a skill that masters of merchant marine vessels have acquired through years of experience and that makes them feel at ease to guide their ship out from danger quickly compared to inexperienced officers. Case based reasoning(CBR) uses the same technique in solving tasks that needs reference from variety of situations. CBR can render decision-making easier by retrieving past solutions from situations that are similar to the one at hand and make necessary adjustments in order to adapt them. In this paper, we propose to utilize the advantages of CBR in a support system for ship's collision avoidance while using fuzzy algorithm for its retrieval of similar navigational situations, stored in the casebase, thus avoiding the cumbersome tasks of creating a new solution each time a new situation is encountered. There will be two levels within the Fuzzy-CBR. The first level will identify the dangerous ships and index the new case. The second level will retrieve cases from casebase and adapt the solution to solve for the output. While CBR's accuracy depends on the efficient retrieval of possible solutions to be adapted from stored cases, fuzzy algorithm will improve the effectiveness of solving the similarity to a new case at hand.