• Food Science and Biotechnology
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• 제17권4호
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• pp.772-779
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• 2008

The antioxidative effect of doenjang (fermented soybean paste) and onion added in the seasoned pork, bulgogi was evaluated and the optimum mixture ratio of ingredients in seasoning sauce has been established using mixture experimental design (MED). When the seasoned pork, bulgogi was prepared with soy sauce 12% (control), doenjang 9% (in replacement of soy sauce 9%) added group (DG), and doenjang 9% and onion 33.4% (in replacement of water 33.4%) added group (DOG), and stored at $-25^{\circ}C$ for 6 months, the peroxide value (POV) and thiobarbituric acid (TBA) value of control, DO, and DOG were all lower than that of control from the initial stage of storage. The antioxidative effect of seasoned pork was found to increase with the replacement of doenjang in seasoning sauce for pork bulgogi. Moreover, antioxidative effects in DOG increased more synergistically. Therefore, the lipid oxidation stability of pork bulgogi was improved by the addition of doenjang and onion onto the seasoning sauce. The optimum mixture ratio of seasoning sauce for pork bulgogi followed up by the MED was found to be doenjang 7.10%, soy sauce 9.46%, onion 19.72%, and water 42.58% with excellent sensory quality.

• 한국도로학회논문집
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• 제17권4호
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• pp.69-75
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• 2015

PURPOSES : The hydrated lime-modified asphalt, which improves moisture resistance, is normally used for pavements to reduce the number of potholes. However, the method of applying the material properties of the lime-modified asphalt mixture for use in pavements is not covered in the Korean Pavement Research Program (KPRP). The objective of this research is to find a method for the design application of lime-modified asphalt's material properties to the KPRP. METHODS: The section for test design is selected in some conditions which are related to the level of design regarding Annual Average Daily Traffic (AADT). To define the application methods of hydrated lime in the KPRP, the models of fatigue, rut and international roughness index (IRI) are determined based on the M-EPDG test results from some earlier research results. Moreover, it is well known that dynamic moduli of the unmodified mixture are not different from those of the lime-modified mixture. RESULTS: The performance results of hydrated lime-modified asphalt pavement were not very much different from those of the unmodified pavement, which meant the limited design regulations regarding fatigue failure, rutting deformation and IRI. CONCLUSIONS: The KPRP uses the weather model from the data for previous 10 years. It implies that the KPRP cannot predict abnormal climate changes accurately. Hence, the predictive weather data regarding the abnormal climate changes are unreliable. Secondly, the KPRP cannot apply the moisture resistance of asphalt mixtures. Therefore, a second level of design study will have to be performed to reflect the influence of moisture. It means that the influence on pavement performance can be changed by the application of hydrated lime in asphalt mixture design.

• 청정기술
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• 제20권3호
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• pp.314-320
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• 2014

이번 연구의 목적은 세계적으로 널리 이용되고 있고, 액화 효율이 높은 Air Products and Chemicals Inc. (APCI)사(社)의 C3MR(Propane Pre-cooled & Mixed Refrigerants) 천연가스 액화공정에 사용되는 혼합냉매의 최적 조성을 통계학적 기법으로 결정하는 것이다. 공정모사는 상업 공정 모사기를 이용했으며 혼합냉매는 methane ($C_1$), ethane ($C_2$), propane ($C_3$)과 nitrogen ($N_2$)로 선택하였다. 그리고 혼합물 설계(mixture design, MD)와 중심합성계획법(central composite design, CCD)을 이용하여 전체 공정의 에너지 소비가 최소가 되게 하는 최적의 혼합냉매 조성을 결정하였다. 연구결과 기존 설계 대비 최대 11.28%의 에너지 소비 절감을 확인하였다. 또한 주 극저온 열교환기(main cryogenic heat exchanger, MCHE)의 온도 프로파일을 통해 열적 효율성도 함께 비교하였다.

• 한국융합학회논문지
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• 제11권5호
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• pp.35-41
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• 2020

본 연구는 루틴, 퀘르세틴, 식이섬유가 전분 소화율에 미치는 영향을 통계적 혼합물 설계방법을 이용하여 확인하고자 하였다. 세 가지 성분들은 모두 농도가 증가함에 따라 전분소화 지연 효과가 나타났으며, 그 중에서도 퀘르세틴과 식이섬유가 함께 섞였을 때 가장 높은 지연 효과를 보였다. 이 혼합물 설계는 simplex-centroid 실험설계법을 이용하였고, 최적 모델은 quadratic 모델에서 나타났다. 이때 얻어진 회귀방정식을 통하여 유의한 상승효과를 확인할 수 있었다. 최적화 통계 방법을 사용하여 혼합비를 분석한 결과 퀘르세틴과 식이섬유가 72: 28 비율에서 전분 소화 지연 효과가 최대로 나타나는 것을 확인하였다. 전분소화에 대한 영향을 3차원 표면 도표로 시각화하여 나타내었으며, 이 결과로 퀘르세틴과 식이섬유의 상호작용으로 인하여 전분 소화를 15% 이상 지연시키는 것을 확인할 수 있었다.

• Communications for Statistical Applications and Methods
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• 제13권1호
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• pp.113-123
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• 2006

Normal mixture model(NMM) frequently used to cluster genes on microarray gene expression data. In this paper some of component means of NMM are modelled by a linear regression model so that its design matrix presents the pattern between sample classes in microarray matrix. This modelling for the component means by given design matrices certainly has an advantage that we can lead the clusters that are previously designed. However, it suffers from 'overfitting' problem because in practice genes often are highly dimensional. This problem also arises when the NMM restricted by the linear model for component-means is fitted. To cope with this problem, in this paper, the use of the factor analyzer NMM restricted by linear model is proposed to cluster genes. Also several design matrices which are useful for clustering genes are provided.

• Computers and Concrete
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• 제10권1호
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• pp.19-33
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• 2012

The performance of a concrete is significantly influenced by its mixture proportion and the coating thickness on aggregate surface. The concrete in this study is designed by estimating the blending ratio of aggregate using a densified mixture design algorithm (DMDA) based on an ideal grading curve and estimating the paste volume as the sum of the amount of paste needed to provide an assigned coating paste thickness. So as to obtain appropriate concrete amount, and thus can accurately estimate the property of concrete. Deduction of this mix design formula is simple and easy understanding, and meanwhile to obtain result is fast. This estimation model of mix design is expected to reward to industry and effectively upgrade concrete quality.

• 한국산학기술학회논문지
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• 제13권3호
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• pp.1002-1007
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• 2012

Pillar의 제조 방법은 진공유리 및 반도체 디스플레이 분야에서 사용되는 핵심공정 중 하나이다. Pillar는 스크린 인쇄 방식을 통하여 배치할 수 있으나 시료의 성분에 따라 메탈마스크의 패턴을 전부 통과하지 못하거나 점도에 따라 통과된 혼합물이 본래의 형상을 유지 못하는 경우가 발생한다. 본 연구에서는 알루미나와 실리카 기반의 무기화합물을 이용하여 스크린 인쇄를 통해 pillar를 배치하였다. 실험계획법의 하나인 혼합물 설계를 이용함으로써 실험횟수를 줄이고 진공유리 pillar의 조성을 설계할 수 있는 방법을 제시하고자 한다.

• 복식
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• 제61권4호
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• pp.38-51
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• 2011

The purpose of this study is to offer data that designers can utilize substantially, by developing creative materials in knit fashion through the analysis relevant to expression characteristics on the mixture in high low class culture, which were shown in knit fashion of contemporary women, as one of methods of pursuing a plan for being able to be appeared creative and unique knit wear. As for a method of this research, studied concept and characteristics on the mixture in high low class culture by preceding researches. And women's knit fashion was selected that is seen to be 3~18 gauge among the world's 4 collections from 2000~2008. The analysis was made with the analytical frame in mixture pattern, and the analytical frame in design element, and item. The results are as follows. The mixture of kidult element and high fashion was shown with characteristic of expressing humor and fun with graffiti, expression like character and cartoon, and fairy-tale fantasy through the exaggerated trifling article. The mixture of grungy element and high fashion was shown with the expression characteristic in the mixture of heterogenous pattern, and in tear, slit without the end treatment due to fraying the end strand in the knit fashion with basic stitch, patch work, fringing and tone-down gray, use of khaki and blue color, and match in opposite color. The mixture of underwear and high fashion was shown the expression characteristic with the emphasis on underwear line like volume up, or with the mixture of details such as pants in diverse lengths, mini skirt, underwear lace, and ribbon.

• 한국산학기술학회논문지
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• 제14권12호
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• pp.6534-6541
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• 2013

본 연구는 아스팔트 혼합물의 주요 파손 형태인 피로균열과 러팅 저항성을 증가시키기 위한 섬유보강아스팔트 혼합물을 개발하기 위한 연구로서, 보강섬유를 고려한 골재 혼합물의 배합설계법에 대한 연구 결과를 나타내고 있다. 실험을 통하여 다졌을 때와 다지지 않았을 때의 단위중량 및 단위중량 비를 산정하였으며, 굵은 골재와 중간골재의 단위 중량비는 1.100, 1.119, 잔골재의 단위 중량비는 1.137로 굵은 골재나 중간 골재에 비하여 다소 큰 것으로 확인되었다. 부피 개념을 이용하여 특정 골재(4.75mm, #4)를 아령형 보강 섬유로 치환하는 방법을 베일리 방법을 사용하여 확인하였는데 1950g의 혼합물에 0.3%의 보강 섬유를 첨가하였을 때 섬유와 교체되어야 할 PCS골재의 무게는 11.88g으로 계산되었다. 따라서 본 연구에서는 골재와 보강섬유의 특성을 최대한 설계에 반영할 수 있는 골재의 배합설계 방법 개발을 통하여 기존의 수퍼페이브 배합설계법이 가지는 단점을 극복하고 자원 활용을 극대화 하고자 한다.

• 동아시아식생활학회지
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• 제23권2호
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• pp.218-226
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• 2013

This study examined the optimal mixture ratio of rice gruel supplemented with puffed rice by mixture design. The quality characteristics of rice gruel samples were examined according to mixture ratios at eleven experimental points. The high soluble solid content and viscosity of gruel samples were significantly dependent on rice (short grain) content instead of glutinous rice. The viscosity ranged from $2,891{\sim}9,153\;cP{\cdot}s$ and soluble solid content ranged from $8.23{\sim}10.13^{\circ}Brix$ at the eleven experimental points. The mixture with the highest solid content and viscosity, 12% rice gruel sample was $10.10{\sim}10.13^{\circ}Brix$ and $9,150{\sim}9,153\;cP{\cdot}s$. The L color of sample decreased with decreasing rice content, while "a" (redness) and "b" (yellowness) values slightly increased. In the sensory evaluation, samples with higher amount of puffed rice and glutinous rice scored higher for brown color, flavor and sweetness than high-content rice samples. The response surface and trace plot results showed that increasing of puffed rice increased the brown color, sweet taste and sticky aftertaste. From the results of the F-test, viscosity, "a" (redness) and "b" (yellowness) values fit a quadratic model with significant probabilities within 0.05%. The optimum predicted formulations of rice gruel containing puffed rice were 1.69% of puffed rice, 0.47% of glutinous rice and 9.84% of rice, respectively.