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시화호 해수유통량 증대에 따른 통계학적 수질 영향 분석
이범연,이창희 한국물환경학회 2021 한국물환경학회지 Vol.37 No.6
A tidal power plant (TPP) has been in operation since the end of 2011 to improve the water quality of Shihwa Coastal Reservoir (SCR). Tidal mixing rate increased 5.6 times after the TPP operation so that in this study, its effects on water quality was assessed through statistical analysis of long-term water quality monitoring data. It was found that the increased tidal mixing contributed to solving the hypoxia problem in the bottom water by preventing the summer stratification. The analysis also showed that the increased tidal mixing had different effects depending on the relative concentration difference for each water quality substances between the SCR and the outside of SCR. The average concentrations of some substances (chemical oxygen demand, total phosphorus, chlorophyll-a) with higher concentrations than the outside of SCR decreased due to the dilution effect, but the other substances (total nitrogen, dissolved inorganic nitrogen, dissolved inorganic phosphorus) with lower concentrations compared to the outside ones increased on the contrary. Factor analysis also showed a consistent result that the first factor accounting for the water quality was changed from the organic-related substances to the nutrient-related substances after the increased tidal mixing. These results imply that the focus of future water quality management needs shifting from the organic substances to the nutrients, particularly dissolved inorganic nutrients. Considering the effect of inflow seawater on the nutrients, the management area should be extended to cover not only SCR but also a certain area outside of SCR.
이범연(Lee, Bum-Yeon),이종화(Lee, Jong-Hwa) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.1
The purpose of this study is to understand the control strategic of the turn in snowboard according to expertise. Six experts and ten novices participated in this experiment. The task was to ride a snowboard, turn four cones, and down the slope. Four camcorders were used for recording. DLT method was used to get the 3D data. The data was analyzed with Kwon3D motion analysis system. Statistics was used to carry out the two-group discriminant analysis, and the significance level set at p<.05. results of this study were as follows: First, the novices showed an increasing rate of time performing as a characteristics of the task while experts showed a relatively constant rate performance for the phase of movement performance patterns. Second, the experts showed smaller angle chang of the shoulder line than novices in the phase 1. This indicates that the novice"s shoulder line movement is actively involved in the pattern of the degree of freedom released. On the other hand, in the phase 2, it can be seen that the experts is more involved in the task performance than the novices, as the degree of freedom in which angle chang of the knee line is larger than the novices. Third, the result of the coordination of the form of the alignment line for experts showed a strong coupled form of them and novices showed a released form. All subjects showed an anti-phase movement form. In conclusion, to control of snowboard movement, in phase two; the experts used a control strategy of lower body through the form of coupled coordination, which is significant then the involved within the novices. But, the novices used a control strategy to make turns with upper body movement in the phase 1 and showed a pattern of released coordination in all phases.
골프연습장 고객의 서비스공정성 지각이 충성도 및 재등록의도에 미치는 영향
이범,최조연,안창식 한국골프학회 2020 골프연구 Vol.14 No.4
[목적] 본 연구는 골프연습장 고객의 서비스공정성 지각이 충성도 및 재등록의도에 미치는 영향을 규명하여 골프연 습장 시장 내 보다 효과적인 마케팅 전략 수립의 기초 자료를 제공하는 것에 연구의 목적이 있다. [방법] 골프연습장 이용 고객을 연구의 모집단으로 선정하고 편의표본추출법을 통해 총 230부의 데이터를 수집하였다. 수집된 유효데이 터에 대하여 SPSS 22.0을 활용해 타당도, 신뢰도, 기초통계, 상관관계 및 다중회귀분석을 실시하였다. [결과] 첫째, 서 비스공정성 지각의 하위요인인 절차공정성, 상호작용공정성은 충성도에 긍정적인 영향을 미치는 것으로 나타났으나, 분배공정성은 유의한 영향을 미치지 않는 것으로 나타났다. 둘째, 서비스공정성 지각의 하위요인인 절차공정성, 상 호작용공정성은 재등록의도에 긍정적인 영향을 미치는 것으로 나타났으나, 분배공정성은 유의한 영향을 미치지 않 는 것으로 나타났다. 셋째, 충성도는 재등록의도에 긍정적인 영향을 미치는 것으로 나타났다. [결론] 골프연습장 운 영자는 고객이 절차공정성과 상호작용공정성을 지각하는 것에 초점을 둔 고객 지향적 마케팅 활동을 강화할 필요가 있다. [Purpose] The purpose of this study was to impact of service fairness on loyalty and intention to re-registration in golf practice range. [Method] To this end, data was obtained from a total of 230 respondents who had visited the golf practice range. Data analyses included EFA, reliability, descriptive, correlation, and multi regression analysis using SPSS 22.0. [Result] Firstly, distributive and interactional of service fairness had a influence on the loyalty, but procedural fairness was not have an impact on loyalty. Secondly, distributive and interactional of service fairness had a influence on the intention to re-registration, but procedural fairness was not have an impact on loyalty. Thirdly. loyalty had a influence on the re-registration intention. [Conclusion] it is necessary to use distributive and interactional of service fairness, loyalty to establish a successful marketing strategy.