• 한국산학기술학회논문지
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• 제12권1호
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• pp.207-215
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• 2011

본 연구는 호텔조리외식계열 남자 대학생 129명을 대상으로 신체계측을 통한 체지방율, 체질량지수 등을 분석하고 설문지를 통하여 스트레스정도에 따른 일반사항 및 외식 온라인 오프라인의 이용 행태를 조사 분석하였다. 대상자의 평균 연령은 20.0세, 신장은 174.9cm로 스트레스가 심할수록 유의적인 차이로 몸무게는 증가되었고 비만으로 나타났다. 스트레스가 심한군의 37.1%, 중간군 28.8%, 정상군의 25.0%가 중증의 우울감을 느끼고 있었다. 스트레스 정도에 따른 연속변수들간의 pearson 상관관계에서 스트레스는 체중, 비만도, 체질량지수, 운동시간 간과 양의 상관관계를 보였으며, 체중은 체지방율, 비만도, 체질량지수, 흡연량, 음료량과 양의 상관관계를 나타내었다. 외식장소 정보 탐색법은 스트레스가 심한군이 인터넷을 통해 외식장소를 탐색하는 비율이 높았으며, 외식업체 홈페이지를 방문한 경험이 유의적으로 많은 것으로 나타났다. 외식업체 방문 시 스트레스가 심할수록 청결에 신경을 쓰고 있었으며, 다양한 체험을 매우 중요시하는 비율이 다른군에 비해 높았다. 스트레스가 심할수록 외식업체 이용 시 유의적인 차이로 맛을 가장 큰 만족요인으로 인식하고 있었으며, 재방문하는 빈도가 다른군에 비해 높게 나타났다.

• 대한약침학회지
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• 제4권2호
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• pp.5-15
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• 2001

This study was carried out for production of neutral antibody to bee venom $(anti-phospholipase\;A_2IgY)$. Hen layings were injected repeatedly with bee venom and phospholipase $A_2$ with Freund's adjuvant. Specific antibody in egg yolk from immunized hen laying was separated, and purified, also immunological characteristics of anti phospholipase $A_2\;IgY$ was invested. The results were summarized as follows: 1. Phospholipase $A_2$ was showed single band at molecular weight 17,000 in SDS-PAGE and bee venom was showed two band at molecular weight 17,000 and under molecular weight 6,500 in SDS-PAGE. 2. During 70 days after hen immunized with bee venom and phospholipase $A_2$, antibodies(anti-bee venom IgY) to bee venom were showed poor ELISA value in egg yolk, but antibodies$(anti-Phospholipase\;A_2IgY)$ to phospholipase $A_2$ in egg yolk were increased ELISA value from 8 days or 15 days and found maximum ELISA value at 42 days. Also after booster at 49 days, ELISA value of anti Phospholipase $A_2\;IgY$ in egg yolk was supported at optical density(O.D) 1.0 level, continuously. 3. Titer of phospholipase $A_2\;IgY$ was showed 1: 32,000. 4. In double immunodiffusion test to phospholipase $A_2$ after double dilution of anti-phospholipase $A_2\;IgY$, only precipitation line was made in 1:1 dilution well of anti-Phospholipase $A_2\;IgY$. But In immunodiffusion test to anti-phospholipase $A_2\;IgY$ after double dilution of phospholipase $A_2$, Precipitation line to 250ul/ml well of phospholipase $A_2$ was showed. In double immunodiffusion test to bee venom(1mg/ml) after double dilution anti-phospholipase $A_2\;IgY$, all well without 1:32 dilution well were showed strong precipitation line. 5. In dot bloting test to anti-phospholipase $A_2\;IgY$ after diluting bee venom(0.5mg/ml), dot bloting color was showed clearly to $1/100(5{\mu}g/ml)$ in bee venom.

• 한국의류학회지
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• 제5권2호
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• pp.49-53
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• 1981

This study was carried out to investigate the drapability of polyester double jersey skirt Drapability is an important aesthetic properties of fabric on clothing construction, In this thesis weight, shearing, bending and non-isotropic characteristics of fabric were regarded as important factors of drapability, Especially for drapability of skirt, I investigated hem effect on various length of hem and skirt, The results were as follows, 1. The less the weight of fabric was, the greater drapability appeared. On fabrics, large pliability and modulus of shear have good drapability, 2. On clothing cutting, non-isotropic property affected on drapability of clothes remark-ably. Drapability order of clothes was greatest in bias direction, next in wale, course direction, 3. The shorter the skirt length and closer at hem line were the larger the hem effect influence upon the drapability of skirt was.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1998년도 제13차 학술회의논문집
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• pp.468-473
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• 1998

A mathematical model was developed for a continuous re-actor in which free radical polymerization of methyl methacrylate (MMA) occurred. Elementary reactions considered in this study were initiation, propagation, termination, and chain transfers to monomer and solvent. The reactor model took into account the density change of the reactor contents and the gel effect. A control system was designed for a continuous reactor using extended Kalman filter (EKF) based non-linear model predictive controller (NLMPC) to control the conversion and the weight average molecular weight of the polymer product. Control input variables were the jacket inlet temperature and the feed flow rate. For the purpose of validation of the control strategy, on-line digital control experiments were conducted with densitometer and viscometer for the measurement of the polymer properties. Despite the com-plex and nonlinear features of the polymerization reaction system, the EKF based NLMPC performed quite satisfactorily for the property control of the continuous polymerization reactor.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2006년도 추계학술대회 논문집
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• pp.288-293
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• 2006

In this work, the characteristics and the improving method of train performance of Korean rubber-tired AGT system(K-AGT) and Urban MAGLEV system are evaluated by using Train Performance Simulation(TPS). The train performance characteristics of K-AGT were analysed according to the change of maximum running speed and those of Urban MAGLEV were evaluated according to a vehicle weight variation. In the result of simulation in virtual line, the scheduled speed and the running time of K-AGT system have no difference with Urban MAGLEV system if the maximum running speed is equal. But the energy consumption of Urban MAGLEV system is more than that of K-AGT system. The analyses showed that in case of a 20 percent vehicle weight reduction of Urban MAGLEV system, the energy consumption per person is similar with the K-AGT system. The Urban MAGLEV system is more efficient in long travel distance condition than in short running distance condition in the aspect of train performance.

• International Journal of Industrial Entomology and Biomaterials
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• 제10권2호
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• pp.153-157
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• 2005

Recently two breeding programs were carried out for isolation of new parental inbred lines in Iran. This study was undertaken in order to estimate the combining ability effects and heterosis of these lines. For this purpose an $8\times8$ diallel cross analysis including eight inbred lines of silkworm with four lines from each program were studied for their five quantitative traits. The results indicated that reciprocal effects appeared insignificant for most of traits. Japanese lines of 111 and 113 were best combiners for shell weight, cocoon weight and shell percentage traits. With respect to pupation rate, Chinese line 110 was the best and according to general combining ability (GCA) and specific combining ability (SCA) variances, it is superior in specific combinations. Hybrid $109\times110$ showed better characters for both productive and viability traits. Hybrids with high heterosis had high SCA too.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 하계학술대회 논문집 A
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• pp.433-435
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• 2003

As the nation's standard of living rises lately, the common interest in the environmental issue is raised and the environmental design of a transmission line is needed. When the environmental design is needed, KEPCO used a steel pole instead of a rectangular tower. A steel pole has many advantages such as simplification of a tower and less damage to the forest according to less demand of site. But the weak withstand weight of a mono type steel pole is a problem. This paper introduces an H type steel pole which improves its withstand weight, reduces a diameter of a pole from 2.6m to 1.3m and decreases joining points according to the increase of unit length of a pole from 6m to 9m.

• 한국가금학회:학술대회논문집
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• 한국가금학회 2002년도 가을 학술발표논문집
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• pp.118-119
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• 2002

This experiment was conduct to determine the influences of different levels of dietary energy and crude protein on growth performances during growing period (2 to 10 wk of age). A total of 360 egg breeder chicks (Hy-Line Brown) was divided into 5 groups with 4 replicates of 18 birds per replicate and fed the experimental diets containing three levels of energy and three levels of protein. With the increase in dietary crude protein levels, body weight significantly increased (P〈0.05). But dietary energy levels did not greatly affect growth performances. There were no significant differences to flock uniformity and tibia strength among treatments.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제11권4호
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• pp.305-309
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• 2011

A sparse reconfigurable adaptive filter (SRAF) based on a photonic switch determines the appropriate time delays and weight values for an optical switch implementation of tapped-delay-line (TDL) systems. It is well known that the choice of switch delays is significantly important for efficiently implementing the SRAF. If the same values exist as calculating the sum of weight magnitudes for implementing the connection constraint required by the SRAF, conventional connection algorithm based on sequentially selection the maximum elements might not work perfectly. In an effort to increase the effectiveness of system identification, an upgraded connection algorithm used progressive calculation to obtain the better solution is considered in this paper. The performance of the proposed connection constraint algorithm is illustrated by computer simulation for a system identification application.

• 한국양식학회지
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• 제6권1호
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• pp.13-27
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• 1993

조피볼락의 단백질 요구량을 구명하기 위해 북양어분을 단백질원으로 하여 에너지 함량이 동일하고 단백질 함량이 각각 20, 28, 36, 44, 52 및$62\%$ 되도록 6종의 실험사료를 제조하여 당년생 치어 (평균 체중 8g)와 일년어 (평균 체중 220 g)를 대상으로 사육 실험을 실시하였다. 성장지표인 어체 100g당 일간 증중량, 일간 단백질 축적량 및 일간 에너지 축적량과 사료효율은 어느 것이나 당년생 치어와 일년어 모두 단백질 $44\%$ 사료까지는 직선적으로 증가하였으나, 그 이후에는 사료의 단백질 함량 증가에도 불구하고 증가량이 적거나 오히려 감소하였다. 사료의 단백질 함량에 따른 일간 증중량의 변화로부터 이차 회귀곡선식을 도출하여 조피볼락의 생물학적 최대성장에 필요한 사료중의 단백질 함량을 추정한 결과 당년생 치어는 $56.7\%$, 일년 어는$50.6\%$로 나타났다. 반면, broken line model을 이용하여 구한 단백질 요구량 추정치는 당년생 치어, 일년어 모두 $40\%$였다. 그리고 단백질 및 에너지 축적효율을 최대로 하는 사료의 단백질 함량은 당년생 치어에서는 $36\~44\%$, 일년어에서는 $44\%$ 이하로 나타나 영양소 축적효율 면에서의 조피볼락의 단백질 요구량도 당년생 치어, 일년어 모두 $40\%$에 접근하였다. 따라서, 조피볼락의 적정성장을 유지하고 영양소 축적효율 및 경제적 효율성을 높이는데 필요한 사료중의 단백질 함량은 $40\%$가 적정할 것으로 판단된다. 한편, 일간 단백질 섭취량을 지표로 하여 어체 100g 당 일간 단백질 요구량을 추정한 결과, 이차 회귀곡선식으로부터 구한 단백질 요구량은 당년생 치어 1.34g, 일년어 0.43g이었고, broken line model을 이용하여 구한 단백질 요구량은 당년생 치어 0.99g, 일년어 0.35g이었다.