• Communications for Statistical Applications and Methods
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• v.10 no.2
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• pp.433-443
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• 2003

In this study, we provide a comparison of multivariate Q-techniques in the up-to-date versions of SAS, SPSS, Minitab and S-plus well known to those who study statistics. We can analyze data through the direct Input method(command) in SAS and use of menu method in SPSS, Minitab and S-plus. The analysis performance method is chosen by the high frequency of use. Widely we compare with each Q-techniques form according to input data, input option, statistical chart and statistical output.

• Journal of Korean Institute of Industrial Engineers
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• v.5 no.1
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• pp.27-44
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• 1979

The purpose of this study is to detect the problems of the Korean typewriter keyboards, and to analyze and compare the standard keyboard with other keyboards. We find that the standard Korean keyboard has a lot of problems in terms of mechanical engineering and human factors engineering and that it is less efficient than Kong's keyboard.

• 한국디지털정책학회:학술대회논문집
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• 2004.05a
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• pp.491-512
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• 2004

The purpose of this paper is to analyze and compare the existing digital media asset management systems and develop a prospective implementation model. As a result of conducting this research, it is recommended that the prospective system consist of archiving server, processing server, and interface program. This result suggests important starting point for development a resonable and reliable implementation model for digital media asset management system.

• Journal of the Korean Home Economics Association
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• v.36 no.4
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• pp.137-146
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• 1998

The purpose of this study was to compare the expectations of mothers and teachers regarding development of three-year-old children and to analyze factors influencing the expectations. The results of this study showed that the mothers held higher expectations than the teachers regarding development of their children in all areas. Maternal expectations differed depending on the ages of the mothers and their children's birth order. Teaching experience with three-year-old children also made differences in the teacher's expectations. Implications to parent education and suggestions for future studies were provided.

• Journal for History of Mathematics
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• v.12 no.2
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• pp.119-133
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• 1999

In this paper, we consider the abstraction of mathematics and arts. In particular, we compare cave arts of Palaeolith stone ages with those of Neolith stone ages and analyze paintings of a child. After the Middle ages, in Renaissance period the new technique, perspective was introduced by painters for the sake of realistic description. We consider the social background of perspective. In 19th century, European society became familiar with the abstraction of mathematics and arts. And we also study the mathematical concepts and the abstract paintings on the basis of the social backgrounds.

• The Journal of Society for e-Business Studies
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• v.7 no.2
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• pp.157-171
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• 2002

We want to find a timestamping method which improves efficient performance and have high-level security to send secured messages in the digital signature and the law of e-commerces. Our paper shows a H-binary tree of time stamp to use a time stamp protocol with high security and performance in the packets of sending messages. We implement and analyze the protocols, show to compare with previous RSA methods. Our proposed protocol has O(log n) time complexity and high-performance.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.25 no.9A
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• pp.1422-1430
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• 2000

S(Synchronous)-CDMA is a new cable modem technology applicable to the upstream channel for high speed multimedia communication using CATV networks. In this paper we analyze the transmitting and receiving process of S-CDMA scheme based on Terayon patent and derive bit error probability of S-CDMA and TDMA scheme in the $\varepsilon$-mixture impulse noise model which appropriately reflects impulse noise characteristics of upstream channel by using various parameters. This analysis results are a good match with the simulation results. We also compare Eb/No gain performance of S-CDMA with TDMA in 16, 32, 64, QAM.

• Journal of the Korea Society for Simulation
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• v.10 no.3
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• pp.31-46
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• 2001

Repeated measurements on units under different conditions are common in biological and biomedical studies. In a number of growth and pharmacokinetic studies, the relationship between the response and the covariates is assumed to be nonlinear in some unknown parameters and the form remains the same for all units. Nonlinear random coefficient models are used to analyze such repeated measurement data. Extended least squares methods are proposed in the literature for estimating the parameters of the model. However, neither objective function has closed form expression in practice. This paper proposes Monte Carlo methods to estimate the objective functions and the corresponding estimators. A simulation study that compare various methods is included.

• International Journal of Advanced Culture Technology
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• v.7 no.3
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• pp.149-157
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• 2019

Recently, the blockchain platform is changing the art market. Changes are taking place in many areas, including artists, collectors, art investors, and auction. The platform that provides distribution history information on artworks on a blockchain basis can be used when information on the work history is suspected or needs verification, and can be used to manage the distribution history information of stolen and lost artworks and confiscated artworks by the police. Several companies currently operate these platforms, but they operate various blockchain platforms according to their contents. In this paper, we will compare and analyze features of artworks blockchain platform.

• Journal of Advanced Marine Engineering and Technology
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• v.36 no.3
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• pp.358-367
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• 2012

A study on tidal turbine using CFD simulation has been an economical and reliable method. However, large flow fields with multi-turbine arrays require high computer performance. Actuator disc theory therefore is widely applied. Actuator disc is the concept that imitates actual turbine by means of an energy absorption disc which has the same dimension and characteristics. Turbines installed in array may have disturbance effects on one another. Thus, the subject of this study is to analyze the far wake of these tidal turbines and compare to single turbine case. The main objects are to analyze two turbines positioned longitudinally at different spaces.