• Proceedings of the Korean Statistical Society Conference
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• 2002.05a
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• pp.41-44
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• 2002

통계학 및 실습 교과목의 원격학습에 필요한 제반요소의 구현방법, 특히 ASP와 웹-메일을 활용한 패키지 실습의 원격 운영에 대하여 설명한다.

• Communications for Statistical Applications and Methods
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• v.1 no.1
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• pp.226-231
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• 1994

이 논문은 검사의 평가와 동등화에 관한 기본적 이론을 일목요연하게 소개하고 있다. 전반적으로 통계적 개념이 교육평가 분야에서 어떤 의미로 해석되고 있는가를 알기쉽게 전달해주고 있으며, 적절한 참고문헌과 패키지 프로그램이 소개되어 있어 통계인들이 이 분야에 접근하는 데에 많은 도움이 되리가 생각한다. 성태제 교수의 노고에 감사드리며, 이 분야의 문외한으로서 갖게도니 몇가지 의문사항으로 토론에 대신하고자 한다.

• Proceedings of the Korean Statistical Society Conference
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• 2005.05a
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• pp.37-42
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• 2005

통계학의 주요 관심인 표본의 정규성 검정을 위해 통계패키지에서 사용하고 있는 Q-Q(quantile-quantile) 플롯을 중도절단표본에서 사용함으로 발생하는 문제점을 알아보고 이를 보완하여 수정된 Q-Q플롯과 수정된 Normalized Sample Lorenz Curve(NSLC)을 제시한다. 예제로 Hodgkin's disease 데이터를 중도절단하여 새로 제시한 Normalized Sample Lorenz Curve을 그려보았다.

• Journal of the Korean Institute of Telematics and Electronics
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• v.20 no.2
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• pp.7-15
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• 1983

In recent years, the logic circuits of high function have been developed to VLSI by the radical advancement of semi-conductor technologies. Under the above influence, it has become possible to design the special VLSI chips for high speed of numerical value processing, wide-band, image processing, etc. And, the development of the VLSI from various kinds of software package has become quite possible. This paper is to propose the technical skill of hardware design about general software package (BMD). The decrease of speed of former statistics processing caused by depending on software only is improved by hardware. In regard of design algorithm, the main system will be able to be established by considering of special feature of statistics. As a result, the complexity of software package is excluded by hardware. And, the efficiency is improved by high speed processing.

• The Korean Journal of Applied Statistics
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• v.35 no.5
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• pp.645-655
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• 2022

In this paper, we investigate automatic functions for time series forecasting in R system and compare their performances. For the exponential smoothing models and ARIMA (autoregressive integrated moving average) models, we focus on the representative time series forecasting functions in R: forecast::ets(), forecast::auto.arima(), smooth::es() and smooth::auto.ssarima(). In order to compare their forecast performances, we use M3-Competiti on data consisting of 3,003 time series and adopt 3 accuracy measures. It is confirmed that each of the four automatic forecasting functions has strengths and weaknesses in the flexibility and convenience for time series modeling, forecasting accuracy, and execution time.

• Journal of the Korean Data and Information Science Society
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• v.7 no.1
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• pp.145-159
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• 1996

다변량 발병시간자료는 각 개개 환자에게 있어 합병증이 발생되거나 혹은 유사 환자군(집락) 내의 발병시간이 상관되어진 생의학자료에서 흔히 볼 수 있다. HMULCOX는 그런 자료를 분석하기 위한 한글 통계 패키지 가운데 하나이다. 이 프로그램은 관련된 발병시간들이 독립이 아닐때에도 COX 비례 위험 모형의 주변확률분포를 계산해 준다. 주어진 조건으로는 주변확률모형의 기본위험율은 일정한 상수, 흑은 변수라도 관계없다. 또한 치료실패율의 치료변수들(공변량)의 효과에 대해 다양한 통계적 추론이 가능하다. 기본적으로 주변확률분포접근법으로 설계되었지만 HMULCOX는 여러 가지 추론 방법을 선택하는 데 일반적으로 충분하다. 이 프로그램으로 2개의 예를 들어 실행하겠다.

• Proceedings of the Korean Statistical Society Conference
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• 2002.05a
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• pp.35-39
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• 2002

컴퓨터 및 네트워크 기술의 발전은 대학 교육에도 많은 변화를 가져오고 있다. 본 연구에서는 웹/멀티미디어를 통한 통계교육용 통합 소프트웨어 iSTAT을 소개한다. 이 소프트웨어는 통계 초보자들을 위한 교육의 일환으로 전통적인 강의 동영상과 전자책(e-book)을 포함하고 있고, 아울러 복잡한 통계이론의 이해를 돕기 위해 고안된 통계강의 보조시스템 CATS와 통계자료분석 실습용 통계패키지 S-Link, 그리고 배운 이론에 대한 평가 모듈이 있다. 이밖에도 관련 이론에 대한 유용한 웹사이트에 링크를 할 수 있다. 이 종합 시스템을 초보자에게 제공함으로서 통계라는 학문을 보다 쉽고 실제 응용이 가능한 학문으로 보급되기를 기대한다.

• Journal of Digital Convergence
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• v.13 no.12
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• pp.117-124
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• 2015

As the acceptance of statistical analysis has been increased because of Big Data, the needs for an advanced second generation of statistical analysis method like Structural Equation Model are also increasing. This study suggests how R-Program, as open software, can be utilized when Partial Least Square Model, one of the SEMs, is applied to statistical analysis. R is a free software as a part of GNU projects as well as a powerful and useful tool for statistical analysis including Big Data. The study utilized R and SmartPLS, a representative statistical package of PLS-SEM, and analyzed internal consistency reliability, convergent validity, and discriminant validity of the measurement model. The study also analyzed path coefficients and moderator effects of the structural model and compared the results, respectively. The results indicated that R showed the same results with SmartPLS on the measurement model and the structural model. Therefore, the study confirmed that R could be a powerful tool that is alternative to a commercial statistical package in the future.

• The Journal of the Korea Contents Association
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• v.12 no.1
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• pp.197-210
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• 2012

In this research, we executed a questionnaire survey targeting men and women in 20' or more who reside in the metropolitan area and have experienced purchasing the vehicles in order to study how Promotion Mix Activity affects Brand assets, and ultimately what kind of relation it has with Purchase intention. In the statistical process of collected data, we analyzed the data by using SPSS 12.0 for Windows statistical package and AMOS 7.0 program. As the result of analysis, first, when we analyzed the relation of the Promotion Mix Activity and Brand Assets of the companies, the more affirmative the assessment on the advertising activities of the companies was, the higher the brand popularity, royalty and image increased, And it appeared that as the assessment on PR activities of the companies got more affirmative, the brand popularity, image and royalty increased. Second, as the result of the analysis of the relation between salespersons' Promotion Activities and Brand assets, it appeared that salespersons' social capacity improved Brand awareness and royalty and their strategic capacity improved Brand awareness, royalty and image. Third, seeing the result of the analysis on the relation between Brand assets and Purchase intention, it was shown that Brand popularity had a meaningful positive(+) effect upon satisfaction and repurchase(oral) intention, and Brand royalty had a meaningful positive(+) effect upon satisfaction and repurchase(oral) intention. In addition, it appeared that Brand image had a meaningful positive(+) effect upon satisfaction and repurchase(oral) intention, and finally it could be known that Brand assets had a close correlation with Purchase intention. Therefore, this research established the color marketing strategy as follows. First, we shall build up the functional role such as aesthetic favor, information communication, protection of ecosystem, publicity reinforcement etc. so as to emphasize the properties of the package design; second, we have to construct the color marketing strategy to convey the images of the commodity besides the psychological and physiological utility which colors grants, the utility used in visual conveyance as communication media; third, we should build the color marketing strategy for the integration of company image; finally we have to compose the colors fitted for the company and product style and introduce design marketing using company colors.

• The Korean Journal of Applied Statistics
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• v.6 no.1
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• pp.23-28
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• 1993

The increase in computing power and the decrease in price of computers has enabled statistical computer graphics to progress tremendously in recent years. Many people can now access to the newly developed computer graphical methods easily. The direct manipulation on screen and the symultaneous realization of the results are two main ingradients of dynamic graphics. We compare the dynamic graphical features in two relatively new packages; SPLUS and XLISP-STAT. XLISP-STAT is very lean packed with powerful dynamic graphical tools. The statistical computer graphics, being still in the state of infancy, has a lot of room to grow, and is a new research area with a great potential.