• 한국의류학회지
• /
• 제24권8호
• /
• pp.1115-1124
• /
• 2000

The purpose of this study was 1) to determine physical properties, and subjective evaluation of sensation of sports socks with various type of fiber content and fabric structure, and 2) to develop regression equations for predicting each sensation from physical properties of socks. Thirty healthy male students participated in the wear test with ten replications. The ANOVA, Duncans multiple test, and multiple regression, and paired-t test were used in the statistical analysis, using an SAS package. The results of this study are as follows: 1. 100% cotton socks had higher absorbency and wickability among five different socks. Comfort sensation, tactile sensation and fit sensation of socks were significantly influenced by types of fiber content. People felt that polypropylene socks were less comfortable & slightly tighter, and cotton socks were drier than the other socks. Terry socks were warmer than single jersey socks. 2. The results of the regression analysis showed that tactile sensation of socks after exercise can be predicted from the cube of moisture permeability($R^2$=0.99), and fit sensation can be predicted from drop absorbency, moisture permeability, wickability in wale and weight($R^2$=-0.98).

• 한국콘텐츠학회논문지
• /
• 제18권2호
• /
• pp.616-625
• /
• 2018

본 연구는 2009~2013년 한국의료패널 데이터를 이용하여 체질량지수(BMI)와 자살생각의 관계를 분석하여 자살에 대한 위험요인을 확인하고자 하는 목적으로 진행되었다. 본 연구에서는 BMI와 자살생각의 관계를 분석하기 위해 R통계패키지를 활용하여 로지스틱 회귀분석을 실시하고 그래프로 나타냈다. 본 연구의 결과로는 BMI를 투입한 모델에서 모두 유의미한 변수로 자살생각에 정적인 영향을 미치는 것으로 나타났다. 즉, 비만인 집단이 다른 집단에 비해 자살생각을 더 하는 것으로 나타났다. 이러한 결과를 기초로 자살예방과 개입을 위한 사회적 함의를 모색하고자 한다.

• 응용통계연구
• /
• 제30권3호
• /
• pp.345-362
• /
• 2017

자료 분석가가 대용량 데이터를 분석할 때 이해하기 쉽고 효과적으로 전달하기 위하여 다양한 데이터 시각화 방법들을 사용하고 있다. 그 중 3차원 그림은 2차원 화면상에서 입체로 표현하기 위하여 그림을 회전시켜야 한다. 이러한 단점을 보완하기 위하여 본 연구에서는 3차원 시각화 자료를 입체적으로 살펴보는 방법으로 가상현실을 이용한 두 가지 방식인 Batch method와 Real-time method를 제안하였다. 이 방법들을 통하여 3차원 시각화 자료를 입체적으로 살펴볼 때 3차원 구조를 좀 더 명확하게 확인할 수 있을 것이다.

• 대한간호학회지
• /
• 제13권2호
• /
• pp.58-69
• /
• 1983

This study on stressful life events and coping methods of hypertensive and nonhypertensive patients was applied to people who was divided into two groups from April 5 to March 10, 19 83. One is hospitalized patients in medical wards of three university hospital in Seoul. The other is inhibitants in two Dongs of Seoul. This study compared the number and seversity of stressful life events reported by hypertensive and nonhypertensive patients, indentified coping methods used by the two groups and explored the relationship between stressful life events and coping methods. Two instruments are used in this study. The first one to measure stressful life events, is Holmes ＆ Rahe (1967)'s S.R.R.S. (Social Readjustment Rating Scale). Which is translated & am-ended. So that it consists of 46 items. The second one is for evaluating coping method. It consists of f items amended through preliminary test after consideration of related literature review and survey on the basis of Bell (1977)'s‘18-item-Questionnaire.’The materials were analyzed by S.P.S.S. (Statistical Package for the Social Science) program-The results of analysis were as follows: 1. There were no significant difference in the number and severity of stressful life events reported by hypertensive and nonhypertensive patients (p>.05). 2. There were significant difference in use of short-term coping methods (p<.01) and long-term coping methods (p<.05).

• 한국빅데이터학회지
• /
• 제4권2호
• /
• pp.105-114
• /
• 2019

자료 분석에 있어서 결측치 대체는 큰 이슈중 하나이다. 결측치의 발생을 무시하고 분석을 진행하게 되면, bias가 발생하여 그에 따른 추정치에 대해 잘못된 결과를 줄 수 있다. 이 논문에서는 미세먼지자료에서 발생한 결측치를 적절한 대체 방법을 찾아 적용하자 한다. 이를 통해 시계열 자료에서 발생한 결측치를 R을 기반으로 한MICE, MissForest 등의 기존 방법과 시계열 기반 모델을 사용하여 여러 가지 상황에 대한 시뮬레이션을 설정해 비교해 밝히고자 하였다. 이 결과에 대해 각각을 변수 별로 비교하였을때 ImputeTS 패키지를 이용한 auto arima 모델의 kalman filter를 적용한 모형과 MissForest 모형이 미세먼지자료 결측치 대체에서는 좋은 결과를 주는 것으로 판단되었다.

• 한국보건간호학회지
• /
• 제16권2호
• /
• pp.412-422
• /
• 2002

The purpose of this study was to investigate knowledge and attitude about oral contraceptives in university students in order to provide better sex education programs and direction. The subjects of this study were 337 university students in M city, during the period from April 1 to April 20, 2001. Collected data were analyzed using descriptive statistics, t-test, Pearson correlation coefficients with SPSS package. The results from this study were summarized as follows : 1. Oral contraceptives related knowledge marked $52.6\pm7.2$ of male students and $53.9\pm5.9$ of females with a range of 14 to 70. The level of female students' knowledge was higher than that of male's but there is not statistically a significant difference(p= .080). Oral contraceptives related attitude marked $60.0\pm10.0$ of male students and $57.4\pm7.8$ of females with a range of 18 to 90. The level of male students' attitude was higher than that of female's and there is statistically a significant difference(p= .011). 2. General characteristics related to oral contraceptives review grade and religion but not related variables statistically significant. 3. Wanted age of oral contraceptives taking medicine and age was correlated positively (r=.178, p=.004). Total knowledge score of oral contraceptives and total attitude score were correlated positively(r=.467 p=.000).

• Journal of the Korean Data and Information Science Society
• /
• 제24권3호
• /
• pp.533-541
• /
• 2013

이 연구에서는 라소를 이용한 간편한 주성분분석을 제안한다. 이 방법은 다음의 두 단계로 구성되어 있다. 먼저 주성분분석에 의해 주성분을 구한다. 다음으로 각 주성분을 반응변수로 하고 원자료를 설명변수로 하는 라소 회귀모형에 의한 회귀계수 추정량을 구한다. 이 회귀계수 추정량에 기반한 새로운 주성분을 사용한다. 이 방법은 라소 회귀분석의 성질에 의해 회귀계수 추정량이 보다 쉽게 0이 될 수 있기 때문에 해석이 쉬운 장점이 있다. 왜냐하면 주성분을 반응변수로 하고 원자료를 설명변수로 하는 회귀모형의 회귀계수가 고유벡터가 되기 때문이다. 라소 회귀모형을 위한 R 패키지를 이용하여 모의생성된 자료와 실제 자료에 이 방법을 적용하여 유용성을 보였다.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1995년도 추계학술대회 논문집 학회본부
• /
• pp.475-478
• /
• 1995

The variations of cold gas properties such as density, pressure, temperature and velocity which are dependent each other are closely related with the dielectric recovery of an interrupter. So, the pressure-rises at no-load in the puffer cylinder and in front of fixed arcing contact of 800kV model interrupter were measured experimentally using pressure transducers of strain gage type and semiconducting type, respectively. The maximum value of pressure-rise in the puffer cylinder increased almost linearly from 7.6 bar at the minimum operated pressure to 9.7 bar at the maximum operated pressure, while the pressure-rise in front of fixed arcing contact was independent with the operated pressure. The measured values will be utilized in verifying the self-developed cold flow analysis program and as an input of commercialized CFD program package.

• Genomics & Informatics
• /
• 제15권1호
• /
• pp.51-53
• /
• 2017

High-throughput transcriptome sequencing, also known as RNA sequencing (RNA-Seq), is a standard technology for measuring gene expression with unprecedented accuracy. Numerous bioconductor packages have been developed for the statistical analysis of RNA-Seq data. However, these tools focus on specific aspects of the data analysis pipeline, and are difficult to appropriately integrate with one another due to their disparate data structures and processing methods. They also lack visualization methods to confirm the integrity of the data and the process. In this paper, we propose an R-based RNA-Seq analysis pipeline called TRAPR, an integrated tool that facilitates the statistical analysis and visualization of RNA-Seq expression data. TRAPR provides various functions for data management, the filtering of low-quality data, normalization, transformation, statistical analysis, data visualization, and result visualization that allow researchers to build customized analysis pipelines.

• Asian Pacific Journal of Cancer Prevention
• /
• 제17권4호
• /
• pp.2337-2339
• /
• 2016

Electronic presentations have become useful tools for surgeons, other clinicians and patients, facilitating medical and legal support and scientific research. Microsoft(R) PowerPoint is by far and away the most commonly used computer-based presentation package. Setting up surgical clinical cases with PowerPoint makes it easy to register and follow patients for the purpose of discussion of treatment plan or scientific presentations. It facilitates communication between professionals, supervising clinical cases and teaching. It is ofter useful to create a template to standardize the presentation, offered by the software through the slide master. The purpose of this paper was to show a simple and practical method for creating a Microsoft(R) PowerPoint template for use in presentations comcerning oral and maxillofacial cancer.