• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.8 no.6
• /
• pp.111-117
• /
• 2008

In this paper, we describes the boxing motion recognition which is used in the part of games, animation. To recognize the boxing motion, we have used two algorithms, one is principle component analysis, the other is dynamic time warping algorithm. PCA is the simplest of the true eigenvector-based multivariate analyses and often used to reduce multidimensional data sets to lower dimensions for analysis. DTW is an algorithm for measuring similarity between two sequences which may vary in time or speed. We introduce and compare PCA and DTW algorithms respectively. We implemented the recognition of boxing motion on the motion capture system which is developed in out research, and depict the system also. The motion graph will be created by boxing motion data which is acquired from motion capture system, and will be normalized in a process. The result has implemented in the motion recognition system with five actors, and showed the performance of the recognition.

• Journal of the Korean Data and Information Science Society
• /
• v.21 no.5
• /
• pp.853-861
• /
• 2010

Experimental conditions are set with environmental factors which can affect ship navigation. In FTS simulation, infinite simulation can be theoretically tested with no time constraint but the simulated result with the same experimental condition is repeated due to mathematical model. RTS simulation can give more resonable results but costs at lest 30 minutes for only experimental time. The mixture of two simulation methods using probability density function has been proposed: some of experimental conditions in which ship-handling is most difficult are selected with FTS and are tested in RTS. It has drawback that it does not consider the navigation route but aggregated track index. In this paper, anomaly detection approach is suggested to select some experimental conditions of FTS simulation which are most difficult in ship-handling during the navigation route. An empirical result has been shown.

• Journal of Korea Game Society
• /
• v.13 no.4
• /
• pp.15-24
• /
• 2013

The game of Go, which is originated at least more than 2,500 years ago, is one of the oldest board games in the world. So far the theoretical studies concerning to the Go openings are still insufficient. We applied traditional LDA algorithm to recognize a pro player's opening to a class obtained from the training openings. Both class-independent LDA and class-dependent LDA methods are conducted with the Go game records of the Korean top 10 professional Go players. Experimental result shows that the average recognition rate of class-independent LDA is 14% and class-dependent LDA 12%, respectively. Our research result also shows that in contrary to our common sense the algorithm based on PCA outperforms the algorithm based on LDA and reveals the new fact that the Euclidean distance metric method rarely does not inferior to LDA.

• The Korean Journal of Applied Statistics
• /
• v.28 no.1
• /
• pp.103-114
• /
• 2015

The role of small and medium enterprises as an economic growth factor has been accentuated; consequently, the need to develop a business forecast model and indexes that accurately examine business situation of small and medium enterprises has increased. Most current business model and indexes concerning small and medium enterprises, released by public and private institutions, are based on Business Survey Index (BSI) and depend on subjective (business model and) indexes; therefore, the business model and indexes lack a capacity to grasp an accurate business situation of these enterprises. The business forecast model and indexes suggested in the study have been newly developed with Principal Component Analysis(PCA) and weight method to accurately measure a business situation based on reference dates addressed by the National Statistical Office(NSO). Empirical studies will be presented to prove that the newly proposed business model and indexes have their basis in statistical theory and their trend that resembles the existing Composite Index.

• Analytical Science and Technology
• /
• v.23 no.6
• /
• pp.587-594
• /
• 2010

This study aims to determine that the test of medicines containing oxiracetam as their main ingredient was properly performed according to protocol. Furthermore, the study is to provide the written form of protocol in order to examine the validity of the HPLC analytical method for the quantitative analysis of oxiracetam in the finished products. In this experiment, system suitability, precision, linearity, range, accuracy, specificity, quantitative limit, and detection limit of the analytical method which was used to determine the contained quality of oxiracetam, were examined. The result shows that system suitability indicates 0.127% RSD, plate number 15081, tailing factor 0.49, and resolution 32.41. The experiment of precision reveals the result of below 0.359% for repetitiveness and among the subjects. In the linearity experiment, a coefficient of correlation ($R^2$) indicates that it is 1. The accuracy experiment satisfies the standards of the recovery test, which is minimum 98.4% and maximum 99.6%. Detection limit is 0.1 mg/L and quantitative limit was found to be 0.5 mg/L. The experiment to check the specificity also satisfies the standards, so the finished product using oxiracetam as the main ingredient is verified as suitable.

• 한국신재생에너지학회:학술대회논문집
• /
• 2010.06a
• /
• pp.218.1-218.1
• /
• 2010

천연가스를 대체하며 21세기 신 에너지원으로 기대되고 있는 메탄 하이드레이트가 주목을 받게된 것은 1930년대 시베리아의 화학 플랜트에서 고압의 천연가스 수송용 파이프라인이 막히는 사고가 빈번하게 발생하여 그 원인을 조사한 결과, 파이프 내에서 가스와 물이 결합하여 하이드레이트를 형성하고, 그것이 파이프의 내벽에 부착되어 파이프를 막고 있다는 것으로 밝혀지면서 천연가스 하이드레이트가 주목을 받게 되었다. 또한 메탄 하이드레이트의 경우 46개의 물분자에 8개의 메탄가스 분자가 포획된 구조로, 그 분자식은 $CH_4{\cdot}5.75H_2O$이다. 따라서 메탄가스와 물의 이론적 용량비가 216:1로써, 표준상태에서 $1m^3$의 메탄 하이드레이트는 $172m^3$의 메탄가스와 $0.8m^3$의 물로 분해된다. 만약 이와 같은 특징을 역으로 이용할 경우 메탄을 주성분으로 하는 천연가스를 물에 포집시켜 인공적으로 하이드레이트를 제조할 수 있기 때문에 천연가스 수송 및 저장의 수단으로써 그 중요성이 커지고 있으며, 액화수송보다 18-24%의 비용절감이 이루어진다고 보고하였다. 그러나 인공적으로 메탄 하이드레이트를 제조할 경우 가스 포집율의 예측이 매우 어려운 것으로 알려져 있다. 따라서 본 연구에서는 동일한 조건에서 메탄 하이드레이트 형성의 반복성 실험을 10회 수행한 결과 과냉도가 클수록 최대최소차이가 줄었고 또한 교반을 시킬 경우도 최대최소차이가 줄어 들었다.

• Journal of the Society of Cosmetic Scientists of Korea
• /
• v.33 no.1 s.60
• /
• pp.11-15
• /
• 2007

Oxidation/reduction titrations are important quantitative procedures for many chemicals. Several widely used analytical methods for cosmetic ingredients are based on the redox reactions. In this article, we summarized basic theories of redox titration and applications. Determination of unsaturation properties based on iodine or bromine number, quantitation of hydrogen peroxide or peroxide materials in several cosmetic ingredients and measurement of titanium dioxide, widely used sunscreen agent, in cosmetics are discussed here.

• Journal of the Korean Electrochemical Society
• /
• v.12 no.4
• /
• pp.301-310
• /
• 2009

This paper describes one of the hot issues in solar cell studies, dye-sensitized solar cell. DSSC is a kind of photoelectrochemical cells. Therefore, it is quite different from the conventional solar cells which originate from pn semiconductor theory, although its mechanism can be explained with the theory. This paper describes the difference between the conventional semiconductor approaches and a newly adapted one for DSSC. Especially, electrochemical analysis methods such as electrochemical impedance analysis and cyclic voltammogram are briefly introduced, which are commonly used for DSSC analysis.

• Science of Emotion and Sensibility
• /
• v.3 no.1
• /
• pp.53-62
• /
• 2000

본 연구의 목적은 (1)꽃문양 스카프 디자인의 레이아웃 변인이 소비자의 감성에 미치는 영향을 본 연구의 제 1보의 결과 및 전통적인 디자인 이론들과 비교하고, (2) 소비자 감성분석을 기반으로 하여 꽃문양 스카프 디자인을 위한 레이아웃 프로토타입을 제시하는 데에 있다. 이를 위하여 두 종류의 꽃 모티브를 세 가지 레이아웃 변인에 따라 컴퓨터 시뮬레이션하여 총 20개의 자극물을 개발하였다. 또한 44개의 형용사쌍으로 구성된 7점의 의미미분척도를 개발하여 세 가지 레이아웃 변인에 따른 소비자의 감성효과를 측정하였다. 피험자는 편의표집된 110명의 20대 여성 소비자였으며, 이들에게 자극물을 제시하고 응답척도에 감성반응을 응답하게 하였다. 총 100부의 데이터를 사용하여 주성분분석, 다변량분석, 삼원변량분석 및 다중비교검정을 실시하였다. 본 연구의 결과를 요약하면 다음과 같다.: (1) 꽃문양 스카프 디자인에 대한 소비자의 감성은 ‘호오(좋아함-싫어함)·심미감’, ‘액센트감’, ‘온화함’ 그리고 ‘리듬감’의 네 가지 하위차원으로 구성하였으며, 이는 제 1보의 결과와 일치하였다. (2) 제 1보와 2보의 결과에 따르면, 꽃 모티브의 크기가 큰 비반복배열의 디자인이 다른 디자인들보다 더 ‘온화감’있게 느껴졌다. (3) 제 1보와 2보의 결과를 종합하여, 두 세트의 꽃문양 스카프 디자인의 레이아웃 프로토타입을 제시하였다.

• Journal of Korean Society of Transportation
• /
• v.27 no.2
• /
• pp.117-131
• /
• 2009

When most drivers take to the freeway, they don't necessarily pay attention to the geometric design. They expect proper design by depending on their own senses and recognition. When they evaluate the features of traveling on the freeway, they can think differently than engineers. The design needs to predict the exact speed of the driver to satisfy the driver's expectation, safety, pleasure and so on. This study categorized the factors influencing the speed of six freeways considering geometric and operational features to make a prediction model of speed. The model used multiple regression with these factors and produced statically appropriate results. This study utilized the principle component analysis and the quantification II analysis based on the image data of the satisfaction of the traveling environment collected through individual interviews. As a result, this study found the factors of satisfaction in a traveling environment. It made a satisfaction model of the traveling environment on freeways considering the change of driver's actual recognition and societal recognition using structural equations and the quantification II theory. Through the model made in this study, This model can present not only qualitative factors like satisfaction of traveling environment on freeways, but also the quantitative elements like speed. What is important is the evaluation of features of traveling on freeways reflected in the recognition and traffic environment felt by drivers.