The shape of foot differs with races, age, gender, the type and size of foot, and the height of heel. These differences are considered enough when the shoe is made. In this paper, we will discussed relationship between the age and foot length. In shoe industry, age is generally divided into infant, children, young and adult shoes. As korean"s foot size is considered, we want to check whether these categories are good using several classification techniques.

A new display device development using CRT and CDT technology is required, which has concepts of flatness and slimness. Screen printing technology can be one of the solutions. In this case, good panel flatness is the precondition. Therefor, we did process capability analysis of panel flatness and regression analysis between panel flatness and BM(black matrix) position by experiments.

Objectives: To quantify the range of motion of upper limb while eating with and without a universal cuff (UC). Method: The feeding cycle was divided into pre-feeding and feeding phases. The pre-feeding phase was operationally defined as scooping water with a spoon. The feeding phase was operationally defined as bringing the spoon to the mouth. A three-dimensional CMS70P analysis system was used to record upper limb motion during eating activities. Ten male and eight female healthy volunteers participated in this study. Results: (1) in pre-feeding phase: when a spoon without a UC was used, wrist was flexed and shoulder was adducted. However, when a UC with a spoon, the wrist was extended and shoulder was abducted. Also, the range of motions (ROMs) of shoulder flexion and internal rotation were significantly increased (p<0.05). (2) In feeding phase: when a spoon without a UC was used, wrist was flexed and radially deviated. However, when a spoon was used in a UC with a spoon, wrist was extended and ulnarly deviated. The ROMs of forearm supination, shoulder abduction, and external rotation were significantly increased(p<0.05). Conclusion: The ROMs of upper extremities with UC were significantly different from without UC. Therefore, when applying a universal cuff on patients, appropriate ROMs for a universal cuff should be considered prior to OT treatment.

A capital investment problem is essentially one of determining whether the anticipated cash inflows from a proposed project are sufficiently attractive to invest funds in the project. The net present value(NPV) criterion and internal rate of return(IRR) c

Fe-Co nanocomposite powders with different composition were prepared by chemical vapor condensation (CVC) process and their characterizations were studied by means of X-ray diffraction, transmission electron microscopy, and vibrating sample magnetometer. The particles having the mean size of 5~25 nm consisted of metallic cores and oxide shells. The Co contents and particle size increased with increasing the carrier gas flow rate of Co precursor. The saturation magnetization and coercivity increased with increasing Co content. and the saturation magnetization maximized at the 40 wt.%Co. The Fe-Co nanocomposite powder oxidized at showed the maximum coercivity of 1739 Oe.

본 연구에서는 진동제어를 목적으로 강성이 평면에서 비대칭적으로 분포된 구조물에 감쇠기를 설치할 경우 감쇠편심과 강성편심에 따른 모드특성 및 변위응답의 변화에 관하여 연구하였다 모드 특성으로는 고유진동수, 모드 감쇠비, 모드참여계수, 동적 증폭계수 등의 변화를 분석하였으며, 변위는 지진이력에 대한 약변, 강변, 무게중심 등에서의 변위를 비교하였다. 또한 이를 바탕으로 비틀림 응답을 최소화하기 위한 감쇠기의 적정 감쇠 편심 및 적정 감쇠 분배 문제에 대해 논하였으며, 단층구조물에서 유도된 적정 감쇠분배 방법을 다층구조뭍에 적용하고 그 효과를 확인하였다.

In this study, the WC-10 wt.%Co nanopowders doped by grain growth inhibiter were produced by three different methods based on the spray conversion process. Agglomerated powders with homeogenous distribution of alloying elements and with internal particles of about 100-200 nm in diameter were synthesized. The microstructural changes and sintering behavior of hardmetal compacts were compared with doping method and sintering conditions. The microstructure of hardmetals was very sensitive to doping methods of inhibitor. Nanostructured WC-Co hardmetal powder compacts containing TaC/VC doped by chemical method instead of ball-milling shown superior sintering densification, and the microstructure maintained ultrafine scale with rounded WC particles.

본 연구에서는 비선형 정적해석법인 능력스펙트럼 법을 이용하여 성능목표를 만족하기 위하여 필요한 점탄성 감쇠기를 설계하는 절차를 제시하였다. 점탄성 감쇠기의 적정 크기를 구하기 위해 목표 변위에서 필요한 유효감쇠 비를 구한 다음 구조물의 이력거동에 의한 등가감쇠 비와 고유감쇠 비를 이용하여 필요한 감쇠기의 감쇠를 구하였다. 점탄성 감쇠기를 설치할 경우에는 구조물의 감쇠뿐만 아니라 강성도 변화하기 때문에 반복계산이 필요하게 된다. 본 연구에서는 먼저 단자유도계에서 구조물의 설계변수를 변화시키면서 제안된 방법의 타당성을 검증하였다. 또한 10층의 철골조 건물에 적용하고 지진응답을 구하였다. 제안된 방법에 따라 설계된 감쇠기를 설치하고 수행한 시간이력해석 결과에 의하면 고려된 설계변수에 관계없이 목표변위를 만족하는 것으로 나타났다.