본 논문은 수산물에 사용되는 식용 코팅의 다양한 천연 성분에 대한 소재 및 특성에 대하여 조사하였으며, 화학적 항균 물질 및 항산화제와 물리적 살균 기술을 병합한 허들 기술(hurdle technology)에 대하여 서술하였다. 다양 한 원인으로 인한 식중독 사고가 빈번히 발생하고 있으며 주된 원인은 오염된 식품의 섭취와 관련이 있다. 특히, 식품 중에서도 수산물은 수분함량이 많고 미생물에 오염되기 쉽기 때문에 저장 기한이 짧다. 이에 대한 해결방안으 로 여러 가지 대안들이 적용되고 있는데, 가식성을 가지 고 독성이 없는 장점을 가진 식용 코팅이 주목을 받고 있다. 식용 코팅은 미생물의 성장을 억제하고 수분 손실을 지연시킴으로써 수산물의 품질을 유지할 수가 있다. 또한 항균 물질 및 항산화제를 첨가하거나 물리적인 살균 기술과도 병합할 수 있다. 하지만 식용 코팅과의 병합 처리 기술이 소수 보고되고 있어 다양한 허들 기술에 대한 연구가 필요하다.

This study investigated factors affecting the behavior hurdles by six male high school student athletes and six average high school students using the ground reaction force and video analysis equipment. The conclusions by comparative analysis of kinematic and kinetic elements for stable operation of the high school men's hurdles to help effective guidance are as follows. 1. The analysis of Kinematics. First, required time of the athlete by all each section in the duration from ground of the stamping foot to stamping of landing foot appeared to be shorter than average students. Second, variation of height in variable distance from the center of the body changes the height of the cloud initiative is high ground and not out in the player. After that, the highest score of body-centered rather was recorded by general student. However, athlete showed higher score again in landing and stamping by landing foot. Third, athlete showed higher sway velocities in all section at variable speed. General students showed higher landing speed at the landing position. Fourth, athlete maintains the leaning forward upper body position at the stamping and landing situation. Especially in the highest score in body-centered, athlete showed over 20 degree than general students. Fifth, Athlete showed faster angular view than general student in all section. 2. The analysis of kinetic variable First, the athlete exerts rear position in the variation of before and after ground reaction force of stamping foot. In contrast, general student exerts front position. Second, Fx, Fy, Fz of the resultant change in the maximum measurement of R (max) values in the ground reaction force of stamping foot showed much stronger stamping food force in athletes than in the general student. Third, athlete and general student exerts outside and inside direction, respectively, at the variation of ground reaction force from landing and stamping position. Forth, athlete recorded higher than 1.5 time than general student at the variation of combined force of Fx, Fy, and Fz of ground reaction force of laning foot. In conclusion, the instruction of raising stamping foot to the forward direction to lean the upper body in the forward is needed for the general student to natural hurdle action. At that time, undisturbed balance at the center body must be maintained by both arms and flexibility training should be concurrent for forward dirction attention. General student should practice to roll shortly and strongly when they are stamping. In order to instruct the student proper posture through the hurdles classes, the exercises for basic strength and flexibility should be conducted simultaneously. Also, the instruction will be effective, if let the students practice the hurdle motion with understanding of principle of the body for jump.

In this study, consumers who have experience of visiting Jeongsun Arirang Market has been selected as samples to understand the characteristics of agricultural products purchase. For this, double hurdle model was used in order to resolve sample selection problem and obtain consistent estimator. The key points are the following. First, as the age increases(up to 59.8 years), chances of purchasing the products at traditional market increase as income increases. Second, when the residence area is outside of Gangwon-province, the purchase amount of the products increased compared to those from visitors within the Gangwon province. Also, visitors who use public transportations purchase less products compared to those who use their own car. Third, probability of agricultural products increase as the visitors consider positive effect the product purchase leads to the local farmers. Fourth, if the visitors consider the quality of the agricultural products, probability of purchasing agricultural product at the site increases. However, if the visitors consider the freshness of the agricultural products, the purchase amount rather drops. Fifth, the probability of purchase increases as visitors consider the brand of traditional market.

이 연구는 남자 고등학교 선수와 일반학생 간의 허들링 동작 시 도약발에서 발현되는 발목 모멘트, 무릎 모멘트, 고관절 모멘트를 비교 분석하여, 학교현장에서 교사와 코치들이 일반학생 이나 선수에게 효율적인 허들 동작을 지도할 수 있는 기초자료를 제공하는데 그 목적이 있다. 이 결과에 의하면, 선수는 구름발의 뒤꿈치가 지면에 닿고 발가락이 이지되는 시점까지 구름발 은 내번모멘트에서 외번모멘트로 전환되었다. 반면에 일반학생은 도약발이 지면에서 이지되는 시점까지 내번모멘트를 유지하여 상방향으로 비행동작이 이루어졌다. 도약발의 힘의 발현순서 는 선수와 일반학생에서 고관절, 무릎관절, 발목관절 순으로 높은 힘의 발현이 나타났다.