• Bulletin of the Korean Space Science Society
• /
• 2004.10b
• /
• pp.347-350
• /
• 2004

A space radiation analysis has been used to evaluate an ability of electronic equipment boxes or spacecrafts to endure various radiation effects, so it helps design thicknesses of structure and allocate components to meet the radiation requirements. A comparison study of space radiation dose analysis programs SPENVIS Sectoring Tool (SST) and SIGMA II is conducted through some structure cases, simple sphere shell, box and representative satellite configurations. The results and a discussion of comparison will be given. A general comparison will be shown for understanding those programs. The both programs use the same strategy, solid angle sectoring with ray-tracing method to produce an approximate dose at points in representative simple and complex models of spacecraft structures. Also the particle environment data corresponding to mission specification and radiation transport data are used as input data. But there are distinctions between them. The specification of geometry model and its input scheme, the assignment of dose point and the numbers, the prerequisite programs and ways of representing results will be discussed. SST is a web-based interactive program for sectoring analysis of complex geometries. It may be useful for a preliminary dose assessment with user-friendly interfaces and a package approach. SIGMA II is able to obtain from RSICC (Radiation Safety Information Computational Center) as a FOR-TRAN 77 source code. It may be suitable for either parametric preliminary design or detailed final design, e.g. a manned flight or radiation-sensitive component configuration design. It needs some debugs, recompiling and a tedious work to make geometrical quadric surfaces for actual spacecraft configuration, and has poor documentation. It is recommend to vist RSICC homepage and GEANT4/SSAT homepage.

• Journal of the Korean Data and Information Science Society
• /
• v.16 no.3
• /
• pp.557-566
• /
• 2005

Clustering is the process of grouping the data into clusters so that objects within a cluster have high similarity in comparison to one another. In this paper we used k-means clustering of several clustering techniques. The k-means Clustering Is classified as a partitional clustering method. We analyze 2002 Gyeongnam social indicator survey data using k-means clustering techniques for environmental information. We can use these outputs given by k-means clustering for environmental preservation and environmental improvement.

• Journal of Families and Better Life
• /
• v.26 no.4
• /
• pp.73-83
• /
• 2008

This study examines the effects of mass media, the tendency for young women to make body comparisons, and the BMI of female high school and college students on their attitudes about eating. Participants were 392 high school students from Gyeonggi Province and 391 college students from Seoul, Gyeonggi and Chung-nam Province. Collected data were analyzed through Cronbach's ${\alpha}$, t-test, One-way ANOVA, $Scheff{\acute{e}}$ test, Pearson's correlation, and stepwise multiple regression. The findings of the study were as follows: 1) While mass media influence differed by grade, tendency for appearance comparison and attitude toward eating did not differ by grade. 2) Mass media influence, tendency for appearance comparison and attitude toward eating differed by BMI. 3) Mass media pressure, specific attributes comparison, and BMI were significant predictors of attitudes toward eating. 4) Tendency for appearance comparison played a mediating role in the relationship between mass media and attitudes toward eating.

• Journal of the Korean Operations Research and Management Science Society
• /
• v.30 no.2
• /
• pp.185-199
• /
• 2005

With the growth of internet shopping malls, there is increasing interest in comparison shopping mall. However most comparison sites compare only book prices by collecting simple XML data and do not provide .the exact comparison Including precise shipping costs. Shipping costs vary depending on each customer's address, the delivery method, and the category of selected goods, so rule based system is required in order to calculate exact shipping costs. Therefore, we designed and implemented comparison shopping mall which compares not only book prices but also shipping costs using rule based inference. By adopting the extensible Rule Markup language (XRML) approach, we proposed the methodology of extracting delivery rules from Web pages of each shopping mall. The XRML approach can facilitate nearly automatic rule extraction from Web pages and consistency maintenance between Web pages and rule base. We developed a ConsiderD system which applies our rule acquisition methodology based on XRML. The objective of the ConsiderD system is to compare the exact total cost of books including the delivery cost over Amazon.com, BarnesandNoble.com, and Powells.com. With this prototype, we conducted an experiment to show the potential of automatic rule acquisition from Web pages and illustrate the effect of delivery cost.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.39 no.1
• /
• pp.1-14
• /
• 2015

This study examines the effect of sociocultural attitude toward appearance and appearance comparison on appearance management behavior by adolescents. The study examines the differences of the effect relationships among the three variables according to adolescents' sex and school grade. The questionnaire was administrated to 575 middle school and high school students in Gwangju from September 2-8, 2011. Data were analyzed by descriptive statistical analysis, frequency analysis, factor analysis, reliability analysis, and regression analysis by SPSS for WIN program. The results were as follows. First, the sociocultural attitude toward appearance was composed of two factors: internalization and awareness. Adolescent's appearance management behavior was composed of four factors: hair and style, face, weight, and neatness. There are significant differences on sociocultural attitude toward appearance and appearance management behavior by gender, age (girl/middle, boy/middle, girl/high, boy/high). Second, the sociocultural attitude toward appearance significantly influenced appearance management behavior with significant differences among groups. Third, the sociocultural attitude toward appearance significantly influenced the appearance comparison and there are significant differences among groups. Fourth, appearance comparison significantly influenced appearance management behavior with significant differences among groups. Fifth, the sociocultural attitude toward appearance mediated by appearance comparison statistically did not influence appearance management behavior.

• Journal of Family Resource Management and Policy Review
• /
• v.11 no.4
• /
• pp.1-20
• /
• 2007

The purpose of this study was to identify the criteria of evaluating a price-comparison website, and to investigate the consumers' perceived importance and satisfaction of each criterion. Also, it compared both the importance and satisfaction levels based on consumers' socio-economic and Internet-usage characteristics. Data for this study came from a questionnaire completed by consumers (n=417), who had used the price-comparison website, and were analyzed through factor analysis, t-test, and ANOVA. The findings of the study were as follows: First, the evaluation criteria of the price-comparison website were categorized into five variety of information, accuracy, convenience, credibility, and the website system. Second, convenience of searching information was seen by consumers as both the most important and most satisfactory criterion. Variety of information was also considered important. For most of the evaluation criteria, the level of consumers' satisfaction was significantly lower than the level of consumers' recognized importance. Third, consumers in their 20s, students, and housewives were less likely to be satisfied by the price-comparison website overall. Older people were less likely to be satisfied with the convenience of the website, and the higher-income group was less likely to be satisfied with the variety of information on hand.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.10 no.6
• /
• pp.1399-1406
• /
• 2009

Proteins are one of essential part of organisms; many proteins are enzymes that catalyze biochemical reactions and are vital to metabolism. Researching for 3D structure of proteins is important because functions of proteins are determined by 3D structure of them. In this study, we developed graphic tool that supports comparison and observation of the two proteins' 3D structure in the single screen. It also supports some comparison data to help researcher's easy comparison and observation works.

• Korean Journal of Child Studies
• /
• v.26 no.2
• /
• pp.107-120
• /
• 2005

Three types of socio-moral transgression events were used to test the moral emotions and attributions of 30 juvenile offenders on probation with a comparison group of 30 non-offenders. Data were analyzed by chi-square. Differences between juvenile offenders on probation and non-offenders were that juvenile offenders expected victimizers would feel happier and less guilty following such acts of victimization as physical harm, theft, and lying than the comparison group. Non-offenders were more likely than offenders to feel that victims would feel angry and upset. Juvenile offenders gave more variable and less adaptive emotional responses. Offenders provided victimization and emotional distance attributions, but the comparison group provided moral attributions or causal-dependent attributions such as fairness and justice.

• Journal of Korean Academy of Nursing
• /
• v.34 no.8
• /
• pp.1379-1387
• /
• 2004

The purpose of this study was to compare smoking control strategies between Korea and the United States. Korea and other developing countries may learn from the experience of the United States in dealing with the growing epidemic of cigarettes. In particular, smoking control objectives, structures, laws and regulations, funds, programs and activities, research, and surveillance systems were compared. The comparison was conducted at the federal, states/provincial, and county levels of the two countries. The data were collected through various governmental websites, contact with people directly, and a literature review. Based on the comparison, seven recommendations for smoking control strategies were made primarily for Korea.

• Proceedings of the Korean Geotechical Society Conference
• /
• 2005.03a
• /
• pp.1227-1232
• /
• 2005

This study carried out unconfined compression tests to identify deformation and strength characteristics of clay. The conclusions are presented in the following. (1) The comparison of unconfined compression strengths according to specimen disturbance showed great differences, except for a few data. (2) The comparison of ${E_{50}}'s$ according to specimen disturbance proved that the two values were similar in general. (3) The comparison of strains at the peak according to specimen disturbance showed that non-shaped specimens had been slightly more disturbed in general. (4) The comparison of $E_{50}/q_u$ also suggested that non-shaped specimens had been slightly more disturbed in general.