본 논문은 고층건축물의 비틀림방향 응답을 평가하기 위하여 필요한 변동비틀림모멘트계수와 변동비틀림모멘트의 파워스펙트럼밀도계수의 경험식을 제안한 연구이다. 이러한 경험식을 제안하기 위하여, 다양한 형상비와 변장비를 가진 27개의 각주형 모형을 제작한 후 노풍도을 다양하게 변화시켜 풍력실험 을 실시하였다. 본 논문에서 비틀림방향 변동풍력의 경험식은 주로 건물의 노풍도와 형상비 그리고 변장비에 의하여 분석되어졌다.

English εducation has becomε our national concern, but it cannot bε denied that this has caused the social problem of the English dividε In partic비 ar， the present public English education system sεems to be in a dilemma bεcause there is a largε gap bεtwζζn the goal of improvement of communicative competence in English and the reality of our schools. Thus, this paper discusses why we need to recognize thε role of English grammar education in thζ EFL situation as one of the ways to carry out more realistic and effective English education. It focuses on thε necessity of the combination of grammar with communication by reviewing the status of gr잉nmar education according to the various seconψforeign language ζducation theories and by consi~ering the problεms with communicative language teaching in our current educational situation. The concept of gramrnar has changed from the traditional one and the role and significance of gramrnar teaching are still being reevaluated. A dζsirable public education policy should bε εstablishεd on the basis of the real needs of 1εarners and the real situation of schools. To accomplish thε goals of effective English εducation ， this papεr accordingly suggests that a new approach to gramrnar teaching bε irnplemented with political support through English education programs.

탄소섬유로 보강한 에폭시 복합재료를 필라멘트 와인딩 공법으로 제조하고 이의 기계적 및 전기적 특성을 연구하였다. 사단자법으로 제작한 UD-CFRP의 전기비저항을 유리전이 온도 부근에서 온도의 함수로서 알아보았다. 실온에서 세로 전기비저항 ρa와 가로 전기비저항 ρc는 방향에 따른 강한 이방성을 보였으며 이들의 비는 약 1:3000이었다. UD-CFRP 시편의 세로 및 가로 전기비저항은 처리된 에폭시 물질의 유리전이 온도 Tg 아래에서는 온도에 선형으로 감소하는 거동을 보였다. 그러나 Tg 위에서 UD-CFRP의 가로 전기비저항은 금속과 같은 거동을 나타내며 온도의 지수승에 비례하여 증가하였다. 전기비저항이 양의 온도 계수를 갖는 메커니즘은 Tg 위에서 온도가 증가함에 따라 탄소섬유 사이의 접촉이 끓어져서 전하운반자의 깡총뛰기나 터널링이 감소하기 때문으로 생각된다. 세로방향의 dc 전도에 관한 활성화 에너지는 Tg 아래에서 0.005 eV이고, Tg 위에서는 0.08 eV이었다.

This study aims to investigate the major themes and contents of studies on teaching English as an EFL in elementary schools in Korea since TEFLES (Teaching English as a Foreign Language in the Elementary School) was first introduced in elementary schools as a regular subject under the 7th National Curriculum in 1997. For the purpose of the study, a total of 218 research was examined in terms of the research methods, topics and main contents, and implications. The results of the study show that more than a half of the research was oriented toward quantitative approach. In addition, the main foci were the effects of certain tasks, pronunciation, dramatization, the use of a variety of multimedia materials on elementary school students" speaking skills. However, a large number of studies dealt with speaking skills in an integrated manner with other factors such as language skills, motivation, interests, and confidence. On the basis of the results, pedagogical implications on the teaching of speaking skills are suggested.

Based on the Benzoflex (Vesicol Chemical Co.) as PVC plasticizer substituents for Di-n-octyl phthalate (DOP), a series of new aromatic carboxylic acid ester compounds were designed as plasticizers, synthesized, and screened for the endocrine disrupting activity. 2-Hydroxybenzoic acid (1) and 2-methoxybenzoic acid (2) as the commercially available starting materials were reacted with diethylene glycol (3) in the presence of p-toluenesulfonic acid using Dean-Stark column to give diethylene glycol di-(2-hydroxy)benzoate (4, KH01) and diethylene glycol di-(2-methoxy)benzoate (5, KH02), respectively. And diethylene glycol di-(3-pyridinyl) ester (7, KH03) and dipropylene glycol di-(3-pyridinyl) ester (9, KH04) were obtained in high yields by treatment of nicotinoyl chloride (6) with diethylene glycol (3) and dipropylene glycol (8) in the presence of triethylamine as a base. To determine the estrogenic disrupting effect of new synthetic phthalate analogues, E-screen assay method was used. Of these compounds, 4 (KH01) was found to be compound without endocrine disrupting effect.

본 연구에서는 호남지역 Sea Grant 사업단의 장기적인 발전방향 및 발전계획 수립에 관해 언급을 하고자 한다. 호남지역 Sea Grant 사업단에서는 지역의 해양 및 수산분야의 발전에 기여하기 위해 크게 연구개발, 교육홍보, 대민봉사활동에 주력하고 있다. 먼저, 연구개발분야에서 고려해야 할 사항들에 살펴보고 호남지역에 적합한 사업 분야를 도출한다. 다음으로 교육홍보분야에 있어서는 해양수산부 및 지역 내 관계기관에서 행하고 있는 해양교육프로그램의 현황을 살펴보고 추진해야 할 사업방향에 대해 제안할 것이다. 대민봉사활동 영역에 있어서는 대민활동의 필요요소들에 대해 언급하고 우리지역에 있어서 필요한 사업영역에 대해 언급할 것이다. 아울러 국내외 유관기관과의 연계를 통한 네트웍 구성방안에 대해서도 살펴볼 것이고, 이를 통해서는 사업단의 효율적인 운영방법에 대한 유익한 정보교류가 가능해 질 것이다. 마지막으로 지역 내의 현안문제를 도출하기 위해 실시한 설문조사결과에 대해 언급하고자 한다.

State-space method for the analysis of the dynamic characteristics of a body motion is set up as mathematical tool for the solution of differential equation by computer. Representation of a system is described as a simple form of matrix calculation and unique form of model is available for the linear or nonlinear, time variant or time invariant, mono variable or multi variable system etc. For the analysis of state-space method a complicated vector calculation is required, but this analysis can be simplified with the specific functions of a software package. Recently as the Graphical User Interface softwares are well-developed, then it is very simplified to execute the simulation of the dynamic characteristics for the state-space model with the interactive graphics treatment. The purpose of this study is to develope the simulator for the analysis of the lateral and directional dynamic characteristics of an aircraft that is primarily to execute the simulation for the analysis of the transient response of an aircraft lateral and directional stability.