• Journal of Digital Convergence
• /
• v.10 no.3
• /
• pp.51-58
• /
• 2012

The goal of this paper is to set up the rank list of the critical success factors according to its weights. To get the empirical data for this research, the Internet-based questionnaires were performed. This research is carried out in two steps. At first step, the critical success factors(CSF) are crystallized through factor analysis methods. To find out the weights and ranks of critical success factors in second step, the analytical hierarchical process(AHP) method were performed. The order list of all CSFs will be determined according to their priorities. This order list shows which factors have the most useful influence on the performance and success of SCM. This result could play the role as milestone for the effective management of Supply Chain Management System in korean manufacturing company.

• The Journal of Engineering Geology
• /
• v.19 no.1
• /
• pp.99-108
• /
• 2009

Since the preexisting evaluation methods of landslide susceptibility take somehow long time to determine the slope stability based on the field survey and laboratory analysis, there are several problems to acquire immediate evaluation results in the field. In order to overcome the previously mentioned problems and incorrect evaluation results induced by some subjective evaluation criteria and methods, this study tried to develop a method of landslide susceptibility by a quantitative and objective evaluation approach based on the field survey. Therefore, this study developed an evaluation chart for landslide susceptibility on natural terrain using the AHP analysis method to predict landslide hazards on the field sites. The AHP analysis was performed by a questionnaire to several specialists who understands mechanism and influential factors of landslide. Based on the questionnaire, weighting values of criteria and alternatives to influence landslide triggering were determined by the AHP analysis. According to the scoring results of the analysed weighting values, slope angle is the most significant factor. Permeability, water contents, porosity, lithology, and elevation have the significance to the landslide susceptibility in a descending order. Based on the assigned scores of each criterion and alternatives of the criteria, an evaluation chart for landslide susceptibility was suggested. The evaluation chart makes it possible for a geologist to evaluate landslide susceptibility with a total score summed up each alternative score.

• Economic and Environmental Geology
• /
• v.43 no.4
• /
• pp.381-391
• /
• 2010

Probabilistic prediction methods of landslides which have been developed in recent can be reliable with premise of detailed survey and analysis based on deep and special knowledge. However, landslide susceptibility should also be analyzed with some reliable and simple methods by various people such as government officials and engineering geologists who do not have deep statistical knowledge at the moment of hazards. Therefore, this study suggests an evaluation chart of landslide susceptibility with high reliability drawn by accurate statistical approaches, which the chart can be understood easily and utilized for both specialists and non-specialists. The evaluation chart was developed by a quantification method based on canonical correlation analysis using the data of geology, topography, and soil property of landslides in Korea. This study analyzed field data and laboratory test results and determined influential factors and rating values of each factor. The quantification analysis result shows that slope angle has the highest significance among the factors and elevation, permeability coefficient, porosity, lithology, and dry density are important in descending order. Based on the score assigned to each evaluation factor, an evaluation chart of landslide susceptibility was developed with rating values in each class of a factor. It is possible for an analyst to identify susceptibility degree of a landslide by checking each property of an evaluation factor and calculating sum of the rating values. This result can also be used to draw landslide susceptibility maps based on GIS techniques.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.10 no.6
• /
• pp.1337-1345
• /
• 2009

In the railway, the delay of a train may affect the schedule of other trains. Hence, the timetable management activity involving overtaking and transferring becomes an important issue. The timetable rescheduling is the conflict resolution of the disrupted schedule and a matter of deciding the sequence of moves among trains and the place for meeting. In Korea, there are few cases where operations research models were applied to railway timetable rescheduling problem in consideration of the transfer between Korea Train eXpress (KTX) trains and conventional trains. Hence, we present a mathematical approach that can minimize the total delay of the whole trains secondly. We applied the model to the exemplary section of a double-line track, the Gyung-Boo Line, and it is confirmed that the mathematical model could effectively address the transfer service as well as the complicated railway conflicts of Gyung-Boo Line.

• Journal of Digital Convergence
• /
• v.11 no.4
• /
• pp.293-302
• /
• 2013

The purpose of this study was to explore relationship among communication with parent, self differentiation, self esteem, life stress in nursing department students. Data were collected from 305 nursing department students and analyzed using descriptive statistics, t-test, ANOVA, Bonferroni's test, Pearson's correlation coefficients and multiple regressions with the SPSS/WIN 18.0 program. Stress frequency differed according to stress importance, self differentiation, self esteem. Hierarchical multiple regression analysis showed stress importance, self differentiation, self esteem explained 38.6% of the total variance in stress frequency. The findings indicate that stress importance, self differentiation, self esteem have an influence on stress frequency. We need to develop and provide nursing intervention programs to decrease college student's stress.

• Journal of Naturopathy
• /
• v.9 no.1
• /
• pp.13-21
• /
• 2020

Purpose: The purpose of this study examined the distribution of constitution(Con) types by examining the Chinese constitution table questionnaire with 594 Seoul citizens. It investigated the preferences of five colors by the Con. It then was to explore the validity of the test and the five colors according to the Con. Methods: We used the CC table questionnaire and surveyed by using a cardinal color. Results: The Con type distributions include yangweak(31.4%), yin-weak, gall-humidity, harmony, qi-weak, qi-gloom, specific, and extravasate in order. The lack of statistical significance also indicates that the CC test is not appropriate for Seoul citizens. The order of five preferences is 31% in blue, 25.3% in yellow, 18% in white, 17.7% in red, and 8% in black. Blue was the most preferred and black the least. There were differences in the distribution of five colors, but they were not statistically significant. In five viscera diseases of the yang-weak con, the stomach was more than half(50.3%). The highest preferred color was blue (30.9%). This difference was significant(p <.01). It evaluated that this influences the preference of five colors by five diseases. Conclusions: The constitution of Seoulian in the CC survey distributed into nine categories. There was a difference in preference of five colors by the con. However, it was not significant. This indicates that the Chinese con table is not suitable for Seoulian. However, the results are to be primary data for research in this field.

• Journal of the Korean Data and Information Science Society
• /
• v.20 no.6
• /
• pp.1103-1118
• /
• 2009

When we wish to estimate the mean or total of a finite population, the numbering of the population units is of importance. In this paper, we have proposed two methods for estimating the mean or total of a population having a linear trend, for the case when the reciprocal of the sampling fraction is an even number and the sample size is an odd number. The first method involves drawing a sample by using a method which is a generalization of Singh et al's (1968) modified systematic sampling, and using interpolation in determining the estimator. The second method involves selecting a sample by modified systematic sampling, and estimating the population parameters by the regression estimation method. Under the criterion of the expected mean square error based on Cochran's (1946) infinite superpopulation model, the proposed methods have been compared with existing methods. We have also made a comparison between the two proposed methods.

• Journal of Korea Water Resources Association
• /
• v.32 no.6
• /
• pp.665-674
• /
• 1999

This paper confirmed the applicability of model to Korean rivers through the calibration and sensitivity analysis of LRCS rainfall runoff model for 18 storm events of Songriweon station in Nakdong river system, and achieved that LS and WLS were better than LAD by model fitting results. Diagonal element of "hat" matrix and affluence measures were used by analysis of parameter estimates, and parameter IL was the most important parameter in model output. By the results of error propagation according to parameter error, parameters IL, TP, F1 were affected by error propagation, and this is measure of sensitivity for the model output. This paper confirmed the relationship of calibration and sensitivity analysis of model through analysis of sensitivity coefficient, diagonal element $h_i$ and $D_i$._i$.

• The Journal of the Korea Contents Association
• /
• v.15 no.1
• /
• pp.44-54
• /
• 2015

The purpose of this study is to analyze the images of children and adults that is reflected in TV commercial advertisements. For this purpose, 241 public TV advertisements were collected from the domestic ads information sites. The analysis criteria used for this study was the one modified from the ads analysis tool developed by Young-hee Ha(2011). The results showed that the number of ads employing the child model was varied according to the product item. The child model appeared the most in the ads for food/beverage and secondly, the ones for computer/electric home appliances. Furthermore, the child model behaved very similarly to the adults in the ads, especially in the aspect of positive communication. And both adult and a child models tended to have the main role in ads. Regarding the relationships among model characters, cooperative relationship between an adult and a child appeared the most and there were lots of family relationships. The results imply that a child in our society is becoming a considerable family member referred for making decision in purchasing commercial products. In addition, it is discussed that the child's image reflected in the ads would have influence on a child viewer's self image.

• Korean Journal of Child Education & Care
• /
• v.17 no.4
• /
• pp.1-30
• /
• 2017

The purpose of this study is to investigate the awareness of daycare teachers by the nursery school operation performance of the National Competency Standards(NCS). For this purpose, 35 public and private daycare center, home daycare centers and corporation daycare center teachers were randomly sampled in Busan Metropolitan City. We conducted a questionnaire consisting of 230 sub-elements based on 45 sub-competency unit elements extracted from 12 areas of job ability of the national competence standards. Final questionnaires were collected from 117 questionnaires of 28 national daycare teachers, 30 private daycare teachers, 30 home daycare teachers, and 29 corporation daycare teachers. As a result, there was a difference in the awareness of importance among the four groups in all 12 performance capability units. For the 12 job performance units, the importance was recognized in the order of corporate daycare center, national daycare center, home daycare center, and private daycare center. Among them, "Establishment of Child Care Center Management Policy", "Construction of Child Care Service", "Child Care Activity Management", "Infant and Child Playing Guide", "Body and Art Activity Guidance", "Language, Nutritional guidance" there were no differences in the awareness of the importance of corporate daycare teachers and national daycare teachers, and there was no difference between national daycare teachers and home daycare teachers. However, there was a difference between corporate daycare teachers and home daycare teachers.. There is also a difference in the awareness of importance between home daycare teachers and private daycare teachers. In the remaining five job competence units, "Child Care Assessment", "Support for Infant and Toddler Development", "Cooperation with the Home and Community", "Child Care Management", and "Child Care Research", corporation daycare centers, national daycare centers. There was no statistically significant difference in the awareness of importance, but there was a significant difference from the private daycare teachers. Also this tendency was consistently observed in 45 sub-capacity unit elements.