• Journal of Information Processing Systems
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• 제8권4호
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• pp.539-554
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• 2012

Model-driven and component-oriented development is increasingly being used in the development of embedded systems. When combined, both paradigms provide several advantages, such as higher reuse rates, and improved system quality. Performing model-driven and component-oriented development should be accompanied by a component model and a method that prescribes how the component model is used. This article provides an overview on the MARMOT method, which consists of an abstract component model and a methodology for the development of embedded systems. The paper describes a feasibility study that demonstrates MARMOT's capability to alleviate system design, verification, implementation, and reuse. Results indicate that model-driven and component-based development following the MARMOT method outperforms Agile development for embedded systems, leads to maintainable systems, and higher than normal reuse rates.

• 대한수학회보
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• 제50권5호
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• pp.1441-1450
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• 2013

In this paper, we consider two-component Bose-Einstein condensates with an internal atomic Josephson junction in the general case, i.e., 0 < p < $\frac{2}{(d-2)^+}$. We prove existence and uniqueness results for the ground states, and obtain some properties of the ground states with large parameters.

• 한국환경과학회지
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• 제6권1호
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• pp.69-73
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• 1997

Endotoxin from the cell wall of marine V. vujnificus was .extracted using the hot phenol-water method, injected endotoxin into rat, and tested the toxic effect of endotoxin on the blood component In rat blood. The results showed that blood glucose, blood urea nitrogen, white blood cell, and reticulocyte were Increased and red blood cell was the same as the number of control group(normal blood), but platelet was decreased. Above results suggested that endotoxin induced a malfunction of liver and that the Increase of white blood cell was for the removal of foreign toxic substance.

• 한국육종학회지
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• 제42권1호
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• pp.50-55
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• 2010

옥수수 R 유전자의 대립인자 중 하나인 R-r:standard (R-r:std)는 종자 호분층의 안토시아닌 합성을 조절하는 S subcomplex와 종자 이외 식물체부위의 안토시아닌 합성을 조절하는 P component로 구성되어 있으며, S subcomplex는 S1 및 S2 component로 구성되어 있다. R 유전자의 대립인자 중 일부는 Pl 유전자가 존재할 경우 종피의 안토시아닌 합성을 유도한다. 따라서 Pl 유전자가 존재할 경우 옥수수 종피의 안토시아닌 합성을 유도하는 R 유전자의 구성요소를 구명하고자 종피의 안토시아닌 합성에 미치는 서로 다른 R 인자들의 효과를 분석하였다. R-ch와 r-ch 인자는 유사한 정도의 착색 효과를 보였으며, R-r:Ecuador (R-r:Ec)는 이들보다 짙은 착색효과를 나타내었다. S subcomplex의 기능은 상실하였으나 정상적인 P component를 보유하고 있는 것으로 추정되는 r-ch는 Pl 유전자가 존재할 경우 종피의 색소합성 기능을 유지하고 있으나, S subcomplex의 기능은 정상이나 P component의 기능은 잃어버린 것으로 추정되는 R-r:Ec 유래 인자 R-g:g1111는 Pl 유전자가 존재할 경우에도 종피가 착색되지 않았다. 더욱이 R-ch와 r-ch 인자의 PCR 분석 결과, R-ch는 P와 S1 component를 보유하고 있으나, r-ch는 S1을 보유하고 있지 않는 것으로 나타났다. 따라서 R 유전자의 구성요소 중 P component가 종피의 안토시아닌 합성에 관여하는 구성요소로 추정되었다.

• 한국지반공학회논문집
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• 제26권10호
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• pp.69-79
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• 2010

본 연구에서는 사면의 이상 거동 및 붕괴 감지를 위해 실제 계측시스템 설치 후 이상보고가 있었던 사변을 대상으로 비모수적 통계방법인 주성분분석 (PCA : Principal Component Analysis)을 적용하였다. 분석결과, 사면의 이상거동여부를 나타내는 척도인 주성분점수는 이상징후 발생시 정상상태에 비해 상대적으로 크거나 낮은 값을 나타내어 변화량에 큰 차이를 보였다. 이를 통해 주성분 분석을 이용하여 사면의 이상 거동 및 붕괴를 감지할 수 있는 것을 확인하였다. 주성분분석을 활용하여 정량적인 사면거동 및 이상징후의 예측이 가능할 것으로 판단된다.

• 한국정밀공학회지
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• 제9권2호
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• pp.29-35
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• 1992

The distribution of magnetic flux density of electro-magnetic chucks may clarify the clamping characteristics which are strongly related to the machining efficiency and machining accuracy in a surface grinder. Therefore the distribution of the normal and the tangential components of magnetic flux density has been analyzed theoretically. It appears that the normal and the tangential components of magnetic flux density increase as the ratio of the separator width to the pitch e/p decreases. The results seem to increase the uniformity and stability of normal component of magnetic flux density for the decreased e/p.

• Asian-Australasian Journal of Animal Sciences
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• 제13권3호
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• pp.413-422
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• 2000

In the class of models which include random effects, the variance component estimates are important to obtain accurate predictors and estimators. Variance component estimation is straightforward for balanced data but not for unbalanced data. Since orthogonality among factors is absent in unbalanced data, various methods for variance component estimation are available. REML estimation is the most widely used method in animal breeding because of its attractive statistical properties. Recently, Bayesian approach became feasible through Markov Chain Monte Carlo methods with increasingly powerful computers. Furthermore, advances in variance component estimation with complicated models such as generalized linear mixed models enabled animal breeders to analyze non-normal data.

• 대한치과교정학회지
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• 제25권6호
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• pp.675-688
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• 1995

The purposes of this study were:1) to determine the normal range of CR-CO discrepancy in normal occlusion group ; 2) to evaluate the changes of condylar position and craniofacial morphology between centric relation and centric occlusion before and after stabilization splint therapy in malocclusion group outside the normal range of CR-CO discrepancy. The normal occlusion group consisted of 80 subjects who had well-balanced faces and good occlusions with acceptable Class I molar relationship. They had not been treated orthodontically and had no signs or symptoms of temporomandibular joint dysfunction. 71 malocclusion patients enrolled for orthodontic treatment at the Department of Orthodontics, College of Dentistry, Chosun University comprised the malocclusion group, little variation of growth factor by the second molar eruption. They had CR-CO discrepancy beyond normal range and were subdivided into anterior-posteriorly -[25 Class I (0$\geq$4), and 24 Class III (ANB$\leq$0)] : vertically - [20 Normodivergentscy (30$\geq$34), and 18 Hypodivergency (SNGoMe$\leq$30)] ; and sexually - [26 Male and 45 Female]. For malocclusion group, stabilization splint with mutually protected type of occlusal scheme was applied for three months. Panadent articulators, Panadent condylar position indicator (CPI), and lateral headfilm were used to investigate the influence of stabilization splint on condylar position and craniofacial morphology. The results of this study were as follows. 1. The amounts of CR-CO discrepancy in normal occlusion were that the antero-Posterior component (${\bigtriangledown}X$) was $0.56\pm0.46mm$ (Male:$0.63\pm0.42mm$, Female:$0.49\pm0.50mm$) ; the supero-inferior component (${\bigtriangledown}Y$) was $-0.75\pm0.48mm$ (Male:$-0.76\pm0.52mm$, Female:-$0.73\pm0.43mm$) : and the transverse component (${\bigtriangledown}Z$) was $-0.33\pm0.28mm$ (Male : $-0.38\pm0.29mm$, Female:$-0.31\pm0.27mm$). 2. The condylar position was in normal range after stabilization splint therapy. 3. The mandible was always rotated infero-posteriorly after stabilization splint therapy. 4. Antero-posteriorly, Class III malocclusion responded very well to the stabilization splint therapy. 5. Vertically, Hyperdivergency responded very well to the stabilization splint therapy 6. Sexually, Male responded very well to the stabilization splint therapy.

• 한국작물학회지
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• 제53권3호
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• pp.314-319
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• 2008

Near infrared (NIR) spectroscopy was used to classify normal and artificially aged nonviable corn (Zea mays L., cv. 'Suwon19') seeds. The spectra at 1100-2500nm were scanned with normal and artificially aged single seeds and analyzed by principle component analysis (PCA). To discriminate normal seeds from artificially aged seeds, a calibration modeling set was developed with a discriminant partial least square 2 (PLS 2) method. The calibration model derived from PLS 2 resulted in 100% classification accuracy of normal and artificially aged (aged) seeds from the raw, the 1st and 2nd derivative spectra. The prediction accuracy of the unknown normal seeds was 88, 100 and 97% from the raw, the $1^{st}$ and $2^{nd}$ derivative spectra, and that of the unknown aged seeds was 100% from all the raw, the $1^{st}$ and $2^{nd}$ derivative spectra, respectively. The results showed a possibility to separate corn seeds into viable and non-viable using NIR spectroscopy.

• 호남수학학술지
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• 제44권2호
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• pp.259-270
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• 2022

This paper is devoted to the geometry of vector fields and timelike flows in terms of anholonomic coordinates in three dimensional Lorentzian space. We discuss eight parameters which are related by three partial differential equations. Then, it is seen that the curl of tangent vector field does not include any component in the direction of principal normal vector field. This implies the existence of a surface which contains both s - lines and b - lines. Moreover, we examine a normal congruence of timelike surfaces containing the s - lines and b - lines. Considering the compatibility conditions, we obtain the Gauss-Mainardi-Codazzi equations for this normal congruence of timelike surfaces in the case of the abnormality of normal vector field is zero. Intrinsic geometric properties of these normal congruence of timelike surfaces are obtained. We have dealt with important results on these geometric properties.