현재 대부분의 교육용 콘텐츠는 학습자들에게 많은 배움의 기회를 제공하고 있음에도 불구하고 그 내용과 형식면에서 필연적으로 가질 수밖에 없는 한계와 문제점으로 인하여, 이를 대체하는 새로운 차세대 교육콘텐츠의 제작 방법에 관한 연구가 요구되고 있다. 제안하는 시스템은 3D MMOG(Massively Multiplayer Online Game)기반의 실시간 대화형 원격강의 시스템으로써 교수 학습자간의 협동문제 해결 및 커뮤니티 강화를 위한 양방향 교육 콘텐츠 시스템이다. 이에 본 논문에서는 제안하는 시스템의 설계 개발을 통해 차세대 원격 교육 콘텐츠의 방향성을 제시 하고자 한다.

The government has conducted a plan of total maximum daily loads(TMDL), which divides with unit watershed, for management of stable water quality target by setting the permitted total amount of the pollutant. In this study, BOD concentration trends over the last 10 years from 2005 to 2014 were analyzed in the Geumho river. Improvement effect of water quality throughout the implementation period of TMDL was evaluated using the seasonal Mann-Kendall test and a LOWESS(locally weighted scatter plot smoother) smooth. As a study result of the seasonal Mann-Kendall test and the LOWESS smooth, BOD concentration in the Geumho river appeared to have been reduced or held at a constant. As a result of quantitatively analysis for BOD concentration with exploratory data analysis(EDA), the mean and the median of BOD concentration appeared in the order of GH8 〉GH7 〉GH6 〉GH5 〉GH4 〉GH3 〉GH2 〉GH1. The monthly average concentration of BOD appeared in the order of Apr 〉Mar 〉Feb 〉May 〉Jun 〉Jul 〉Jan 〉Aug 〉Sep 〉Dec 〉Nov 〉Oct. As a result of the outlier, its value was the most frequent in February, which is estimated 1.5 times more than July, and was smallest frequent in July. The outlier in terms of water quality management is necessary in order to establish a management plan for the contaminants in watershed.