• Journal of the Korean Society of Industry Convergence
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• v.6 no.3
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• pp.185-192
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• 2003

This study consolidation undrain Triaxial Compression Tests using constant confining pressure in clay that receive preconsolidation stress that is different and, void ratio, pore water pressure coefficient, shear strength compare with another thing theory and studied analyzing change relation of elastic modules. The summary of analysis is follows: If preconsolidation stress increases in same confining stress in relation of preconsolidation stress and deviator stress, deviator stress is proportional and increased. Can know that excess void pressure is proportional and decreases in size of preconsolidation stress in same confining stress state if preconsolidation stress increases preconsolidation stress and relation of excess void pressure. Also, over consolidated state can assume that this is thing by Dilatancy's effect though excess void pressure decreased remarkably. Preconsolidation stress and relation of stress path can know that shear strength degree increases preconsolidation stress increases, and specially, preconsolidation stress was appear in stress path form of overconsolidated state case of clay that receive at 300, 400, 500kPa in 100, 150kPa's deviator stress.

• Journal of Ecology and Environment
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• v.40 no.1
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• pp.34-44
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• 2016

Background: Little is known about how chemical water quality is associated with ecological stream health in relation to landuse patterns in a watershed. We evaluated spatial characteristics of water quality characteristics and the ecological health of Dongjin-River basin, Korea in relation to regional landuse pattern. The ecological health was assessed by the multi-metric model of Index of Biological Integrity (IBI), and the water chemistry data were compared with values obtained from the health model. Results: Nutrient and organic matter pollution in Dongjin-River basin, Korea was influenced by land use pattern and the major point sources, so nutrients of TN and TP increased abruptly in Site 4 (Jeongeup Stream), which is directly influenced by wastewater treatment plants along with values of electric conductivity (EC), bacterial number, and sestonic chlorophyll-a. Similar results are shown in the downstream (S7) of Dongjin River. The degradation of chemical water quality in the downstream resulted in greater impairment of the ecological health, and these were also closely associated with the landuse pattern. Forest region had low nutrients (N, P), organic matter, and ionic content (as the EC), whereas urban and agricultural regions had opposite in the parameters. Linear regression analysis of the landuse (arable land; $A_L$) on chemicals indicated that values of $A_L$ had positive linear relations with TP ($R^2=0.643$, p < 0.01), TN ($R^2=0.502$, p < 0.05), BOD ($R^2=0.739$, p < 0.01), and suspended solids (SS; ($R^2=0.866$, p < 0.01), and a negative relation with TDN:TDP ratios ($R^2=0.719$, p < 0.01). Conclusions: Chemical factors were closely associated with land use pattern in the watershed, and these factors influenced the ecological health, based on the multimetric fish IBI model. Overall, the impairments of water chemistry and the ecological health in Dongjin-River basin were mainly attributes to point-sources and land-use patterns.

• Proceedings of the KIEE Conference
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• 1998.07e
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• pp.1746-1748
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• 1998

In this paper, the relation between the increment of metallic content such as copper(Cu) and iron(Fe) according to degradation of pole-transformer oil and change of electrical characteristics according to increment of metallic content was studied. As the result, electrical characteristics was decrease according to increment of metallic content, especially copper content, and the trend of T.C.G(Total Carbonic Gas) agreed with the trend of copper content.

• KIEAE Journal
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• v.16 no.3
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• pp.63-70
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• 2016

Purpose: This paper tried to understand the architectural philosophy of Laurant Beaudouin who is one of Neo Corbusian architects. They were in succession to Le Corbusier's principles of modern architecture, and developed his concept of modern architecture with their own creative architecture, and formed a big achievement in the contemporary architecture. As a representative Neo Corbusian architect, the design concepts and principles of Laurant Beaudouin were analyzed in relation of nature, light and space. Method: Three step study was conducted for the paper; Firstly, investigated significant his architectural characteristics as a neo corbusian architect in the point of view of plan libre, architectural promenade and light; Secondly, analyzed his architectural philosophy on light, gravity and color, Finally, deducted relation light and space through analysis 5 works of Beaudouin. Results: According to the results of the study, Laurant Beaudouin has greatly developed of Corbusier's principles and philosophy of modern architecture, and then, created his own originative architectural works by combining nature, light and space and presented architectural promenade with the change of time.

• Journal of Applied Reliability
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• v.18 no.3
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• pp.208-212
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• 2018

Purpose: The three Vs of volume, velocity and variety are commonly used to characterize different aspects of Big Data. Volume refers to the amount of data, variety refers to the number of types of data and velocity refers to the speed of data processing. According to these characteristics, the size of Big Data varies rapidly, some data buckets will contain outliers, and buckets might have different sizes. Correlation plays a big role in Big Data. We need something better than usual correlation measures. Methods: The correlation measures offered by traditional statistics are compared. And conditions to meet the characteristics of Big Data are suggested. Finally the correlation measure that satisfies the suggested conditions is recommended. Results: Mutual Information satisfies the suggested conditions. Conclusion: This article builds on traditional correlation measures to analyze the co-relation between two variables. The conditions for correlation measures to meet the characteristics of Big Data are suggested. The correlation measure that satisfies these conditions is recommended. It is Mutual Information.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.2
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• pp.332-340
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• 2013

As a means for users to interact online, Social Network Service focuses on facilitating the building of social relation. Also, Social Network Service(SNS) provides various functions for managing relationships and sharing information based on relationships. Analyzing behavioral characteristics and the process of relationship formation can help to identify the characteristics of the model for online human relationship. In this paper, we analyze usage pattern based on characteristics posted messages of influential users in Twitter. Also, classifying Facebook users into influential group and uninfluential group based on the number of their social relations, we analyze and compare characteristics of relationship formation patterns of the two classified groups. In addition, we present characteristics of human relation model in social network according to the pattern analysis.

• Water for future
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• v.10 no.1
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• pp.71-77
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• 1977

The stream morphological characteristics of a watershed play a significant role in the analysis of rainfall-runoff relations in a river basin and a quantitative description of these characteristics is essential for determining the appropriate values of physical parameters of a watershed which usually are input data for rainfall-runoff simulation models. In this study the stream morphological characteristics of the Gab River basin, which is one of the three major tributaries of Geum River, was determined quantitatively by the Horton-Strahler's method. The result showed that the Gab River System was developed very closely to the patterns generally described by the laws of Horton. The basic relations concerning the morphological characteristics deriveed in this study are the relations of stream length, and average stream slope, the stream length-drainage area relation, relative height-relative drainage area relation, and the relation between the proportional stream order and drainage area. No correlation analysis was possible between the morphological parameters and the streamflow due to non-existence of the stage gauging stations on the Gab River System.

• Journal of the Korean Home Economics Association
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• v.24 no.4
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• pp.131-138
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• 1986

The present study was designed to explore housing phenomena in relation to rental cost. More specially it attempted 1) to investigate the household, house, rental characteristics, rental cost, renter's subjective evaluation about rental cost and residential behavior, 2) to determine the household, house and rental characteristics which may be used to predict the renter's subjective evaluation about the present rental cost, 3) to determine the relationship between rental cost and residential behavior. Cluster random sampling methods was used, 119 housewives in songdong-gu, were interviewed using a structured questionaire. The major findings were described in detail. In general, results showed that renter's living in house with more serious conditions felt their rental costs a heavy burdenn even when the cost was inexpensive, seemed not able to plan their housing in case of rising of rental costs.

• Journal of Korean Academy of Nursing Administration
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• v.10 no.1
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• pp.83-96
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• 2004

Purpose: The purpose of this research is, by investigating organizational characteristics, types of nursing organizational culture and team effectiveness in ICU, to ascertain the type of nursing organizational culture and the organizational characteristic that can improve the team effectiveness. Method: The research targeted 427 nurses from 33 ICUs of 14 general hospitals which have more than 250 beds and the data were gathered by using self-report questionnaires from April 10, 2003 to April 24, 2003. For this research, the following tools were used; the tool for measuring organizational characteristics and organizational cultures and the tool for measuring team effectiveness. Result: The most significant nursing organizational characteristic in ICU is the centralization. The organizational culture in ICU is generally rank-oriented culture. There was a significant difference (p<.01) in four types of organizational cultures; relation-oriented, innovation-oriented, rank-oriented and task-oriented. Verifying influence power of organizational cultures upon team effectiveness of ICU, relation-oriented culture had 49.2% of an influence upon team effectiveness, innovation- oriented and relation-oriented culture had 60.4% of an influence, and rank-oriented, innovation-oriented and relation-oriented culture had 61.2% of an influence. The organizational culture profiles according to the types of nursing organizational cultures in 33 ICUs were found by a cluster analysis. They were classified into five culture profiles; strong balance culture profile, weak balance culture profile, innovation-oriented and task-oriened culture profile, strong relation culture profile and strong rank culture profile(p<0.5). According to me organizational culture profiles, a significant difference of team effectivenesses(coworker satisfaction, team performance perception, team satisfaction and team commitment) was found(p<.01). The strong balance culture profile had the best team effectivenesses. Conclusion: For nursing culture management, a nursing administrator should identify the relevant nursing organizational culture at first by utilizing an innovative team-leader. After identifying the organizational culture, the administrator should make strategic plans and practices that can distinguish good organizational cultures to be expanded from ones to be sublated so that a strong balance culture can be developed.

• Journal of the Korean Society of School Health
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• v.14 no.2
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• pp.237-248
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• 2001

This study was designed to identify the relation between the Perceived Social Support and the Self-care Agency of high school students in a rural area. The subjects for this study were 250 students living in Chonnam province: among first grade, second grade and third grade students were 98, 89 and 63 respectively. The data were collected during the period from April 2 to 4, 2001. The instruments used in this study were the Generally Perceived Social Support Scale developed by Park, J. W.(1985) and Self-Care Agency Questionnarie developed by Deneys(1981). The data were analyzed by descriptive statistic, t-test, ANOVA, and Pearson's correlation using the SAS PC+ Program. The results were as follows: 1. The mean score of the Perceived Social Support was 3.19. 2. The mean score of the Self-care Agency was 2.65. 3. There was a significant differences in school year(F=3.11, p=.046), educational level of the father(F=3.41, p=.035) that of the mother(F=4.07, p=.019), and economic status(F=8.99, p=.000), school performance(F=16.37, p=.000) from Perceived Social Support between general characteristics. 4. There was a significant differences in economic status(F=4.55, p=.004), school performance(F=6.72, p=.002) from self care agency between general characteristics. 5. The relation between the score of the Perceived Social Support and Self-care Agency was significant(r=.49, p=.0001). The relation between the score of the direct Perceived Social Support and Self-care Agency was significant(r=.50, p=.0001) and the relation between the score of the indirect Perceived Social Support and Self-care Agency was also significant(r=.40, p=.0001). In conclusion, it was found that higher score of the Social Support was a higher level of the Self-care Agency, especially the direct Perceived Social Support. The score of the Social Support and Self-care Agency was significantly differentiated according to economic status and school performance.