최근에는 고장력강의 사용증대와 함께 구조부재가 경량화추세에 있으며 이상부식이 발생한 구조부재는 강도가 크게 저하되리라 예상되지만 지금까지 이에 관한 연구가 거의 없는 상태이다. 본 연구에서는 단소성대변형유한요소법을 적용하여 국부이상부식을 가진 판이 면내압축하중을 받을 경우에 압축최종강도에 미치는 부식부영역의 크기. 부식부의 판두께 감소량 및 세장비의 영향에 대하여 연구하였다.

본 연구에서는 수리실험을 실시하여 만곡부의 흐름특성과 만곡부에서의 교각 주위 국부세굴형상, 최대 국부세굴심 등을 분석하였다. 또한, 기존의 세굴보호공법 중 원환에 의한 보호공법을 만곡부에 적용하여 세굴감소효과를 분석하였다. 180' 만곡수로에 대해 이동상 실험결과 본 실험조건에서는 최대 횡방향 하상경사가 150' 단면에서 발생하였으며, 원환에 의한 세굴감소효과는 유로 직선부에서 최대 40%, 만곡부에서는 150' 단면 외측의 경우 최대 44%의 감소효과

Lee, Jae, Choel. 1998. The Locality on Movement and the Strict Cyclicity. Studies in Modern Grammatical Theories 12, 103-123. In the framework of the Minimalist Approach, as the Government theory is eliminated, the locality on movement is determined by the Checking Domain of Head Chain, the Minimal Link Condition, the Extension Requirement, three processes for the Generalized Transformation, and so on. The purpose of this paper is to examine that the Strict Cyclicity becomes a factor that determine the locality of movement, is to point out the problems of the Extension Requirement(Chomsky 1992), the Minimal Chain Condition(Chomsky 1994) and the Target α (Kitahara 1995) that are suggested to guarantee the Strict Cyclicity, and is to prove the problems to be solved by the Attract-F Theory. When the feature of the checker is strong, the strict cyclicity is automatically guaranteed, because the closest item containing the relevant formal features must move to the SPEC of the checker before the projection of the upper head does occur. There never arise direct movements of lexical items after Spell-Out. The violation of the Strict Cyclicity cannot occur after Spell-Out, either because the relevant formal features only move to the sublabel of the checker and adjoin there.

Varing the flow velocity of solution and particle diameter, the mass transfer coefficient of the local electrode on current feeder has been measured in an empty flow reactor, an inert fluidized bed electrode reactor, and an active fluidized bed electrode reactor. It had its maximium value when the bed porosity was 0.6 to 0.65 and decreased with increasing the height of local electrode. The mass transfer coefficient was found to be high especially when bigger particle was fluidized. Electrochemical deposition of copper dissolved in the synthesized wastewater has been performed in the active fluidized bed electrode reactor. The deduction rate was higher than 90% and the residual concentration of copper decreased to less than 5ppm.