이 연구는 "모차르트 이펙트"를 통해 밝혀진 모차르트 음악이 지능향상에 효과가 있다는 연구결과와 비교하여 온라인 게임 이용자의 게임 후 시 공간 능력에 어떤 영향이 나타나는지 알아보고자 한다. 10대 후반에서 20대 초반의 대학생을 대상으로 한 이번 연구에서 게임 이용 시 시공간 인지 능력의 차이는 공간 인지 능력의 차이에서 두드러지는 것으로 나타났다. 음악, 애니메이션, 온라인 게임(카트라이더)을 이용한 세 집단의 공간인지 능력의 차이를 분석한 결과, 온라인게임을 선호하는 집단이 '모양맞추기' 점수가 높아 온라인게임 이용이 이용자의 시 공간 능력 향상에 도움이 된다는 연구결과를 도출하였다.

This study was performed to investigate the relationship between concentrations of heavy metals in sediment and the depths of 27 sampling sites along the West Nakdong river in downstream of Nakdong River. The deepest site was Kangdong bridge nearby 20ft. From here, the depth was shallowed to Chidong gradually. In each site the smaller mesh was, the higer concentration of heavy metal becomed. Concentration of Zn, Cd, Cr and Cu at inflow point of Shinoe stream was 576.016 ppm, 262.307 ppm, 68.674 ppm and 61.634 ppm, respectively, the concentration was the higest at this point. From here, it was lowered gradually. The concentration of heavy metal at inflow point of Joman river was 155.328 ppm, 56.485 ppm, 25.200 ppm and 31.172 ppm, respectively, those concentrations were higer than other points with the exception of Shinoe stream. Therefore, Joman river and Shinoe stream were the major source of pollution in West Nakdong river. Among two sources Shinoe stream was more important source of pollution. West Nakdong river has become lake by Noksan floodgate because it`s pollution has had influence on Bonglim.

The assesment of the safety of ship's transit in a curved narrow channel consists of the maneuvering safety determined by the chance of running aground, the maneuvering difficulty determined by ship's workload, and shiphandler's subjective evaluation. In this study, to examine the correlation between shiphandler's subjective evaluation and the maneuvering safety, the real-time and full-mission shiphandling simulator in the Korea Marine Training & Research Institute(KMTRI) was utilized. On the conning bridge of the shiphandling simulator, 50 experienced masters have conducted the modeled vessel of 60, 000 deadweight tonnage along the designed channel under 3 different environmental conditions. It was possible to assess and analyze theoretically the correlation between the shiphandler's subjective evaluation and maneuvering difficulty under each environmental condition by quantifying the data obtained from the tests. The results are as follows: ① As the degree of maneuvering difficulty increases, the shiphandler's subjective evaluation increases in the designed channel under the designed environmental condition. ② In the straight area, not the bend of the designed channel, maneuvering difficulty increases sharply under the environmental condition of current and wind coming from the stern.