• 한국시뮬레이션학회논문지
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• 제22권3호
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• pp.35-41
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• 2013

본 연구는 생산 공정 간 버퍼 제약이 있는 flow shop 시스템에 활동기간 기반 애로공정 발견 기법을 적용하여 그 타당성을 분석하였다. 생산 시스템에는 보통 생산성을 저하시키는 1개 또는 1개 이상의 애로공정이 존재한다. 전통적인 애로공정을 발견하는 기준으로 공정의 대기 시간이나 대기 공정의 길이 또는 공정의 이용률이 자주 활용된다. 애로공정은 다른 공정작업을 대기 상태로 만들어 전체적으로 시스템의 생산성을 저하시키는 공정으로 공정 시간과 기계의 고장 및 수리 시간의 확률적인 특성으로 인하여 애로공정은 생산과정에서 수시로 다른 공정으로 변환된다. 어떤 공정이 언제 활동기간으로 변화하는 정보를 이용하여 애로공정을 발견하는 기법을 범용 시뮬레이션 언어 AweSim에서 구현하였다. 시뮬레이션 결과, 활동기간 기법과 단독 및 변환 애로공정 기간 비율 기법이 전통적인 기법과 비교하여 애로공정을 발견하는데 효과적인 것으로 나타났다. 간단한 flow shop 모형을 대상으로 얻은 결과이지만 복잡한 시스템에도 적용될 수 있을 것으로 기대되며 애로공정 개선을 통한 생산시스템 가용 자원의 효과적인 배치는 생산성을 향상시키는데 기여할 것으로 사료된다.

• 미생물학회지
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• 제24권3호
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• pp.329-334
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• 1986

PEG 6,000을 유일한 탄소원으로 이용할 수 있는 세균을 하천수와 하천부끔의 토양으로부터 분리하였으며 이증 분해능이 우수한 EL-033 isolate-를 Micrococcus sp. 로 동정하였다, Micrococcus sp. EL-033은 mono-ethylene g glycol플 세외한 di-, tri-, tetra-ethylene glycol파 분자량 6,000까지의 PEG닫을 분해하였으며 그 중합도가 높윤 수복 생 앙상태까 좋은 분해특성을 가AI고 있였으며. PEG 20, 000에 대해서도 약간의 분해능음 가지고 있었다. 최적 배지 조성은 PEG 6,000 0.2% $K_2HPO_4$, 0.1% $NaH_2PO_4{\cdot}12H_2O0.1%MgSO_4{\cdot}7H_2O$0,1 %, polypeptone 0,1 %, $MgSO_4$, 0,05 % (pH7,5) 이었다. 생장 최적조건에서 PEG 6,000의 분해는 대수증식기인 48시간 배양하였을때 90%이상의 분 해융플 나타내있으며,72시간 후에 거의 완전히 분해되었다.

• 한국전문물리치료학회지
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• 제18권1호
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• pp.18-27
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• 2011

This study was to investigate the positive effects of specially designed trunk-stabilization exercise program on lower extremity balance of elderly with history of leprosy. In this participants, lower extremity functions has been undermined by the development of damage in peripheral nerves. A total of 40 elderly with history of leprosy were divided into 2 groups of equal size ($n_{1,\;2}=20$): a group that participated in the exercise program, and a control group that did not exercise but did continue to engage in normal daily activities (including walking). The exercise group exercised for 60 minutes 2 days a week for 12 weeks. Static balance ability was measured by asking study participants to a one leg standing test: dynamic balancing ability was measured with a tandem walking test and a timed up-and-go test. The participants in the exercise program and the control group were tested before and after completion of the exercise program for comparison, and then divided according to their ability to feel sensory in the soles of their feet into the categories of normal sensory group: group with sensory loss in one foot: and group with sensory loss in both feet. The participants in the exercise program showed a positive, statistically significant difference in static balance compared with the control group (p<.05) as measured using the one leg standing test. Similarly, the participants in dynamic balance (p<.05) as measured using the tandem walking and timed up-and-go tests. Finally, these improvements were related to the severity of sensory loss in the soles of the feet for all study participants.

• 한국의류산업학회지
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• 제7권5호
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• pp.535-541
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• 2005

The health of feet is connected with individual's health and affects a man's activity. Shoes need to be designed to protect feet and to absorb the impact of land. In order to choose suitable shoes for feet, the foot size and shape must be considered, so it is essential to grasp the exact size and shape of the foot. This study aims to present fundamental data on shoes' easy order prototype development for choosing shoes of good wearing comfort, by classifying feet size and shape junior high school boys in the early adolescent period. The subject were 234 Korean junior high school boys age from 14 to 16 years old. The subjects were directly measured anthropometrically and indirectly analyzed photographically. 6 factors were extracted through factor analysis and those factors comprised 79.42% of total variance. The factors characterizing foot girth and width, foot length, foot height, foot shape around the fifth toes, angle of foot breadth and foot shape around the first toes. 3 clusters as their foot shape were categorized using 6 factor scores by cluster analysis. Type 1 was characterized by long large foot with deformed first toe. Type 2 had smaller in foot girth, width and length than other types and with deformed fifth toe. Type 3 had average size and high foot shape. Shoes prototype which is to be developed later on will be able to generate 2D flattening in the foot sole form. Therefore, it would be a great support in producing and choosing appropriate shoes if forms are classified by subdividing foot form classification and extract a factor which shows only the foot sole shape.

• 척추신경추나의학회지
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• 제12권2호
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• pp.53-62
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• 2017

Objectives : The purpose of this study is to report the effect of foot orthosis and Korean Medicine therapy including Chuna on symptom that accompany scoliosis by observing one clinical case study. Methods : One patient suffer sole pain and numbness that accompany scoliosis who received outpatient treatment was investigated for the changes in numerical rating scale(NRS), pelvic height and pelvic angle. Pelvic height and angle were checked by using Whole spine X-ray. During outpatient treatment, patient treated by foot orthosis and Korean Medicine therapy including Chuna. Results : After 7 times treatment, NRS showed a remarkable difference, which decreased from 7 to 1. Pelvic height decreased from 11.16mm to 8.58mm and pelvic angle decreased from $5.03^{\circ}$ to $3.16^{\circ}$. They showed a slight difference. Conclusions : Foot orthosis and Korean Medicine therapy including Chuna might be effective in the patient that showed symptoms which is caused by scoliosis.

• Elastomers and Composites
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• 제21권4호
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• pp.309-322
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• 1986

This survey reports on the extensive examination of the qualify of 14 jogging and tennis shoes separately, availavable in the domestic market, Both jogging and tennis shoes were catagorised in two groups, namely the general goods(less expensive ones) and the exclusive goods(expensive models). The detailed classification are shown below; The domestic products meet the general purpose just as that of the foreign products. Due to the adhesion technology, the domestic tennis shoes consist of rubber sole with natural leather upper;In fact, the desirable combination, as foreign products, must be polyurethane/natural leather. The expensive models were heavier than the less expensive ones. The greater weight difference of right and left shoes are shown in the expensive models than that of the less expensive ones. The moisture absorption ratio of the expensive model is far superior in comparison with the less expensive model. The reason is identified by the material supplyed to produce the expensive model consisted of the natural leather and proper parts. The abrasion resistance of the expensive models were excellent that of the less expensive ones, because the rubber soles were showed the properties better than polyurethane sole which was used in the less expensive model.

• 반도체디스플레이기술학회지
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• 제10권1호
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• pp.33-41
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• 2011

Due to the recent quantum leaps forward in bio-, nano-, and information-technologies (BT, NT and IT), the precisionization and miniaturization of mechanical and electrical components are in high demand. In particular, the ITrelated equipments that take a great part in our domestic industry are in the area requiring high precision technologies. As a consequence, the researches on the development vibration isolation systems that diminish external disturbance or internal vibration are highly required. Among the components comprising the vibration isolation system, air spring has become on a focal point for the researchers due to its merits. This air spring is able to support heavy loads, keep a low natural frequency despite of having a lower value of stiffness, and control the performance of vibration isolation. However, sometimes the sole use of air spring is in demand due to some economic reasons. Under this circumstance, the damping effect of sole air spring may not enough to reduce sufficient amount of vibration. In this study, the air spring mount system connecting with an external chamber is proposed to increase or control the damping effect. To investigate its damping mechanism, the thermal and dynamic behaviors of the system is examined through a theoretical modeling approach in this part of research. In this approach, thermomechanical and Helmholtz resonator type models are to be employed for the air spring/external chambers and connecting tube system, respectively. The frequency response functions (FRFs) derived from the modeling effort are evaluated with physical parametric values and the effects of connecting tube length on these FRFs are identified through computer simulations.

• 한국동물학회지
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• 제32권2호
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• pp.84-92
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• 1989

한국인 정상 남자 112명, 여자 118명 총 230명의 460족척에 나타난 피문을 분석하여 다음과 같은 결과를 얻었다. 1) 족척의 중간부의 융선 방향은 횡행, 경도의 비골측 근위경사, 경도의 비골측 근위경사, 뚜렷한 비골측 원위경사의 순으로 나타났으며 중간부의 융선 배열에 대한 대칭 빈도는 63.9%로 나타났다. 2) 무지구부 문형은 원위측 제상문, 와상문, 개방문의 순으로 나타났으며 무지구에 나타난 대칭 빈도는 83.2%이였다. 3) 지간부 문형은 II 지간부에서는 개방문, 원위측 제상문, 근위측 제상문, 와상문의 순으로, III지간부에서는 개방문, 원위측 제상문, 와상문, 근위측 제상문의 순으로, IV지간부에서는 개방문, 원위측 제상문, 와상문의 순으로 나타났다. 4) 지간부 융선수는 a-b 57.76, b-c 70.74, c-d 75.09이며 남녀 사이, 또는 양족 사이에는 통계적으로 유의한 차이가 없었다 (p>0.01).

• Biotechnology and Bioprocess Engineering:BBE
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• 제10권2호
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• pp.136-141
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• 2005

The capability of utilizing a TCA cycle intermediates as the sole carbon source by the multi-vitamin auxotrophic yeast Torulopsis glabrata CCTCC M202019 was demonstrated with plate count method. It is indicated that T. glabrata could grew on a medium with one of the TCA cycle intermediates as the sole carbon source, but more colonies were observed when glucose, acetate and one of the TCA cycle intermediates coexisted in the medium. Among the intermediates of the TCA cycle examined in this study, cell growth was improved by supplementing oxaloacetate. Further investigation showed that the presence of acetate was necessary when oxaloacetate was supplemented. By supplementing with 10 g/L of oxaloacetate in pyruvate batch fermentation, dry cell weight increased from 11.8 g/L to 13.6 g/L, and pyruvate productivity was enhanced from $0.96\;gL^{-1}h^{-1}\;to\;1.19 gL^{-1}h^{-1}$ after cultivation of 56 h. The yield of pyruvate to glucose was also improved from 0.63 g/g to 0.66 g/g. These results indicate that under vitamins limitation, the productivity and yield of pyruvate could be enhanced via an increase of cell growth by the supplementation of oxaloacetate.

• 한국실내디자인학회논문집
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• 제16권6호
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• pp.250-257
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• 2007

Characteristics of color application indicated from Kirchsteigfeld is presented the various points of view to be preserved urban housing color. It had been handled as environmental color by view point of community and connectivity rather than color scheme of single housing. First, color to be consisted of basis for urban entirely as background color in urban housing complex has been indicated the bright and cheerful feelings and expressed to be introduced mostly from the single color system. Second, characteristics to be inhibited strongly from housing complex had been indicated by restricted four types of color, formulated the overall context and change through accent and the change from disposition of principal and the accessary of color scheme. In this case, it was not regular formulation, but as a whole category view, it could be provided by orderly regularity system strictly Particularly it had been applied as a whole for lightness change by single color, introduced the different color of building to be centered or remained by a visual point. This had been formed to introduction of color by stand points of housing group not introduction to color by sole concept of building. Third, emphasizing of morphologic feeling by using of difference of lightness, it could be indicated the mild and comfortable stereo-type sensibility from the overall types of housing, we could understand for formation of color code by lightness of slightly differences. Fourth, it had been taken the convenient adaptation method for maintenance of simple graphic system as a environmental color. It has considerable advantage for sustainability of color to indicate on finishing material, form and detail in architecture, as the sole separated color not to be complicated when to be painted over and again or managed continuously.