This study was conducted to investigate the effect of dietary sericite(SC) on laying performance, feed conversion ratio, egg quality and fecal ammonium nitrogen. Three hundreds and sixty 92-wk-old, Lohman Lite layers were randomly divided into 20 groups of 18 birds each and assigned to five experiment for 4 weeks (72 birds per treatment). Dietary treatments were Control (control diet), SC 0.5 (control diet +0.5% sericite), SC 1.0 (control diet +1.0% sericite), SC 1.5 (control diet +1.5% sericite), and SC 2.0 (control diet +2.0% sericite). Hen-day egg production tended to increase by the SC 1.0%, SC 1.5% and SC 2.0% supplementation in the diets. Egg weight also tended to increase by the SC 1.0% addition in the diets. Feed intake was increased (p<0.05) in SC 1.5 and SC 2.0 but feed conversion was improved (p<0.05) only in SC 1.0 (p<0.05). Digestibility of nutrients were not linearly affected by dietary supplementation of sericite although there was an inconsistent difference. Egg shell strength, albumin height, yolk color, and egg shell thickness were not affected (p<0.05) by treatments. Fecal NH3-N concentration was decreased (p<0.05) by dietary sericite supplementation compared to control. This study showed that dietary 1.0% sericite supplementation can be beneficial to improve egg production, egg weight and feed conversion and to decrease fecal NH3-N concentration.

과적차량은 도로와 교량의 내구성 감소에 가장 큰 위험요소 중 하나여서 지금까지 이런 문제를 제한하기 위해 과적차량에 대한 단속이 실시되어 왔다. 그러나 기존의 시스템은 많은 문제점을 내포하고 있어서 이에 대한 대처방안이 요구되고 있다. 이러한 이유로 본 논문에서는 기존 문제점 해결과 u-ITS의 구축을 위해 무인화, 무선화 기반의 U-중차량 무인과적 단속시스템 구축방안을 제시하며 이를 위해, 시스템 구성방법, USN의 적용, 시스템 제어부와 WCDMA/HSDPA의 설계에 대해 연구하고 WIM 센서의 성능에 대해 검증하였다.

필댐의 경우 일반적으로 저수위, 간극수압계, 누수량계 및 정상침하계 등을 이용하여 안전관리를 수행하고 있다. 상기 계측기의 설치 목적은 대부분 공사 중 안정성과 관련 있지만 댐 완공 후 관리중인 시점에서는 주로 계측기의 경시변화만 분석하여 그 활용도가 저하되었다. 따라서 본 연구로 주성분 분석을 통해 저수위-간극수압계의 상관성은 높은 것으로 나타났고 간극수압계 그룹 내에서의 상호 상관관계로부터 그룹 내 계측기들이 상호대체 될 수 있는 것으로 판단된다. 또한 향후 미계측 값의 추정 및 이상값 제거를 위한 유용한 정보로 활용할 수 있을 것으로 판단된다.

Alien invasive species are introduced with or without intent and spreading all over Korea. They are known to have negative effects on biodiversity such as economic and environmental damage and causing decrease or loss of native species. The habitats like wetland, reservoir and riverside are especially in danger of being invaded by alien species due to stress and disturbance. Therefore, Korea National Arboretum is steadily working on research and studies on managing alien invasive species. This research aims to collect basic information of Ludwigia peploides subsp. montevidensis (Spreng.) P.H. Raven which was found near riverside in Suwon-si and is concerned to become an invasive alien species. We expect the description, diagram and pictures of this taxon will be helpful for early detection and effective management.

This paper has a aim at comparison of ways of thinking between Korean and Chinese through analysing especially deictic words in two languages.Deictic words are appropriate materials for comparison of way of thinking, because they are extremely context-sensitive and reflect well human life. They were divided into 3 categories in this study, which are personal deixis, time deixis and place deixis. After this study we can say that there are more consideration for hearer in Korean than in Chinese. That characteristic is a important evidence to understand Korean and Korean's way of life.