• Title/Summary/Keyword: Multiple factor analysis

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Load Distribution Factors for Determinating Shear Force in Steel Box Girder Bridges (강상자형교의 전단력 산정을 위한 하중분배계수)

  • Song, Jea Ho;Kim, Min Wook;Kim, Il Su;Oh, Jin Woo
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.15 no.2
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    • pp.88-97
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    • 2011
  • For Korean design provisions are not equipped for skewed steel box girder bridges, when American provisions are adopted, load distribution factors different from real behavior are determinated. Furthermore the possibility of over or under estimated bridge design involves. The aim of this study is to provide more rational load distribution factor formulas based on real behavior for shear at obtuse corner of skewed steel box girder bridges. In order to accomplish the aim finite element analysis for a variety of skewed steel box girder bridge structural models is carried out, and each parameters degree of influence on wheel load distribution factors of skewed steel box girder bridges are analyzed. Then multiple regression analysis is fulfilled in order to propose formulas for determinating shear force load distribution factor of skewed steel box girder bridges.

User´s Satisfaction in Urban Parks by the Effects of Illumination (도시공원의 조명효과별 이용만족도)

  • 최연철;김진선
    • Journal of the Korean Institute of Landscape Architecture
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    • v.29 no.4
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    • pp.44-52
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    • 2001
  • This study performed factor analysis for 21 independent variables related to the effect of illumination and suggested the effect by multiple regression analysis on the relationship between the effect of illumination and the satisfaction of use of a dependent variable to find the effect of illumination in urban parks at night and the effect of illumination on the satisfaction of use. The results of this study are as follows; 1) Of the 21 independent variables used to study the effect of illumination in urban parks at night, the impact on safety and possibility of crime was highly. The effects of illumination by factor analysis were abstracted as effects of removing anxiety, securing safety, increasing use. 2) As a result of multiple regression analysis, independent variables influencing satisfaction of use in urban park were proved as effects of removing anxiety, securing safety, increasing identity, preparing atmosphere and increasing use. Also, the effect of securing safety was the most important factor; it showed a level of importance 2 times higher than the effect of removing anxiety, and 7.7 times higher than the effect of preparing atmosphere in relative contribution of the effect of illumination to satisfaction of use. 3) Of the effects of illumination influencing satisfaction of use in urban parks, the effect of securing safety and the effect of increasing visibility were more significant than the effects of removing anxiety, preparing atmosphere and increasing use. This fact means that personal safety an the identity of persons or facilities in the space of use should be considered with priority in planning or designing illumination. Also, it implies hat, for night use in urban parks, lightness of the space is required for general safety of use at parks, and proper illuminance on the activity in the space of use should be required. The subject parks of this study are 8 urban neighborhood parks. The model on the effect of illumination and the satisfaction of use depends on characteristics and conditions of location of he park and user class, so the subject parks and persons should be varied, and the difference by sex or ages should be suggested.

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The Effects of Mother-Child Interaction and Child's Social Behaviors on Child's Peer Acceptance (어머니-유아 상호작용과 유아의 사회적 행동이 유아의 또래수용도에 미치는 영향)

  • Chung, Jee-Nha
    • Korean Journal of Human Ecology
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    • v.23 no.3
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    • pp.409-420
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    • 2014
  • The purpose of this study was to explore the effects of mother-child interaction and child's social behaviors on child's peer acceptance. Participants were 108 4- to 5-year-old preschoolers(58 boys, 50 girls) and their mothers. Data were analyzed by descriptive statistics, correlation analysis and stepwise multiple regression analysis. The major findings are summarized as follows: (1) mother-child interaction are generally correlated with child's peer acceptance. And child's prosocial behavior was positively correlated with child's peer acceptance, whereas child's aggressive behavior, asocial behavior and hyperactive-distractible behavior were negatively correlated with child's peer acceptance. (2) The most influential factor on child's peer acceptance was child's experience in session, the next influential factor was child's hyperactive-distractible behavior and the last influential factor was asocial behavior.

The Study on the Effect of the Maternal Variables on the Verbal Abuse (아동에 대한 언어적 학대에 영향을 미치는 어머니 관련변인에 관한 연구)

  • 최정미;우희정
    • Journal of the Korean Home Economics Association
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    • v.40 no.5
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    • pp.225-235
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    • 2002
  • The purpose of this research is to delineate the effect of maternal variables of the verbal abuse. Such variables as the mother's age, her education level, and maternal parenting stress have been chosen for the analysis. The sample subject were 659 pairs of fifth/sixth grade of elementary school and firs/second grade of middle school, and their mothers. The major findings of the research are as follows: first, looking at the correlation between the mother's age/education level and the verbal abuse, the verbal abuse factor shows difference correlating to the mother's age/education level. Second, looking at the correlation between the material parenting stress level and the verbal abuse, the verbal abuse factor shows difference correlating to the maternal parenting stress level. Third, the result of multiple regression analysis on the effects of the maternal variables to the verbal abuse indicates that material parenting stress is the significant contributing factor. All in all, the maternal variables account for 9% of the verbal abuse score.

A Study on the Factors Barrier Determining the Performance of Korean Manufacturing Firms in China (중국 진출 한국 제조기업의 현지 장애요인이 경영성과에 미치는 영향 연구)

  • Baek, Eun-Young;Koo, Jong-Soon
    • International Commerce and Information Review
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    • v.11 no.3
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    • pp.311-335
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    • 2009
  • This study investigates the factors barrier the performance of Korean manufacturing firms in China. Also an empirical data use the field survey of Korean manufacturing firms in China. as a result, First, we find that employment-cost factor, that is rising labor costs, a change of occupation is an effect the performance of Korean manufacturing firms in China. Second, business beginning year and by 7 region factor is very significant on the performance of Korean FDI firms in china. And then, Korean corporate investment in China is a desirable form of long-term investment shall be determined. also we know that regions of China, differentiated investment approach is effective. finally, The result shows that FDI to China is need of the long term plan, and In actual use, these FDI should be applied flexibly in china business environment.

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A Study on the Propensity for Conspicuous Consumption of Adolescents of Cheju (제주도 청소년소비자의 과시소비성향에 관한 연구)

  • 이지혜;김정숙
    • Journal of Korean Home Economics Education Association
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    • v.9 no.2
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    • pp.161-174
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    • 1997
  • The purpose of this study is to investigate the effects of self-concept, reference group, consumer education, and materialism on the propensity for conspicuous consumption of adolescents. The data used in this study were collected through questionnaires on 604 adolescents living in Cheju City. The data were analyzed by using SPSS PC(sup)+ program. The propensity for conspicuous consumption of adolescents differed significantly according to their age and allowance, and sex. The propensity for conspicuous consumption of the middle school students was higher than that of the high school students. The propensity for conspicuous consumption of boys was higher than of girl’s. The propensity for conspicuous consumption of the adolscents was influenced by materialism and the reference group. According to the results of the multiple regression analysis, the most influential factor was materialism and reference group. In clothing materialism was the most influential factor and the reference group was the second influential factor. But In shoes, bag, and school supplies the reference group was the most influential factor and materialism was the second influential factor.

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GIS-based Spatial Integration and Statistical Analysis using Multiple Geoscience Data Sets : A Case Study for Mineral Potential Mapping (다중 지구과학자료를 이용한 GIS 기반 공간통합과 통계량 분석 : 광물 부존 예상도 작성을 위한 사례 연구)

  • 이기원;박노욱;권병두;지광훈
    • Korean Journal of Remote Sensing
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    • v.15 no.2
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    • pp.91-105
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    • 1999
  • Spatial data integration using multiple geo-based data sets has been regarded as one of the primary GIS application issues. As for this issue, several integration schemes have been developed as the perspectives of mathematical geology or geo-mathematics. However, research-based approaches for statistical/quantitative assessments between integrated layer and input layers are not fully considered yet. Related to this niche point, in this study, spatial data integration using multiple geoscientific data sets by known integration algorithms was primarily performed. For spatial integration by using raster-based GIS functionality, geological, geochemical, geophysical data sets, DEM-driven data sets and remotely sensed imagery data sets from the Ogdong area were utilized for geological thematic mapping related by mineral potential mapping. In addition, statistical/quantitative information extraction with respective to relationships among used data sets and/or between each data set and integrated layer was carried out, with the scope of multiple data fusion and schematic statistical assessment methodology. As for the spatial integration scheme, certainty factor (CF) estimation and principal component analysis (PCA) were applied. However, this study was not aimed at direct comparison of both methodologies; whereas, for the statistical/quantitative assessment between integrated layer and input layers, some statistical methodologies based on contingency table were focused. Especially, for the bias reduction, jackknife technique was also applied in PCA-based spatial integration. Through the statistic analyses with respect to the integration information in this case study, new information for relationships of integrated layer and input layers was extracted. In addition, influence effects of input data sets with respect to integrated layer were assessed. This kind of approach provides a decision-making information in the viewpoint of GIS and is also exploratory data analysis in conjunction with GIS and geoscientific application, especially handing spatial integration or data fusion with complex variable data sets.

A Study on the Body Shape for Chinese Adult Women of Development of Apparel Sizing System (중국(中國) 성인(成人) 여성용(女性用) 의류치수규격(衣類値數規格) 성정(設定)을 위(爲)한 체형(體型) 연구(硏究) 제1보(第1報))

  • Wee, Hye-Jung;Sohn, Hee-Soon
    • Journal of Fashion Business
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    • v.9 no.5
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    • pp.15-36
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    • 2005
  • The purpose of this study was to provide for the useful fundamental data by developing an appearl sizing system according to body types for Chinese adult female. Thus, it was to improve of fittness and coverage rate of exporting domestic clothing to China. As a sample, 1360 female women was seleted aged between 19 and 50 who resident in Beijing and Shanghai in China for characterization body types and development of apparel sizing system by classifying them. As for the method of this study was made of 111 items by indirect measures done during Jun. 23 $\sim$ Aug. 7, 2004. Data analysis were processed by SPSS WIN 10.0 Program was used to for technical statistical analysis, ANOVA(t-test and F-test), factor analysis, duncan's multiple test. The results from the study were as follows: As they are getting older, the horizontal size and length categories related to width, thickness, and circumference increased, and the height and vertical size that show the vertical size of body reduced. 1. The women in the Shanghai area had large head width, head thickness and head circumference, the categories related to the height and head, and the women in the Beijing area had larger in terms of width, circumference, length, angle and other categories. 2. Chinese Adult women's constitutional components determined by factor analysis, six components could be identified: factor 1 : constitutional obesty and width size, factor 2 : longistudinal body size, factor 3 : shoulder form and size, factor 4 : longistudinal upper body size, factor 5 : longistudinal under body size, factor 6 : shoulder dropping.

로버스트 파라미터 설계에서 인자분석을 이용한 동시 최적화 방안에 관한 연구

  • Gwon, Yong-Man;Hong, Yeon-Ung
    • 한국데이터정보과학회:학술대회논문집
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    • 2003.10a
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    • pp.163-170
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    • 2003
  • 본 논문에서는 로버스트 파라미터(robust parameter) 설계에서 다특성(multiple quality characteristics)인 경우 제어인자의 동시 최적화 조건을 찾는 방안으로 인자분석(factor analysis)에 의한 최적화 방안을 제시한다. 또한 하나의 사례를 들어 제안한 방안과 기존의 방안을 비교 연구하였다.

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A Study on Family Stress Management (가족스트레스관리에 관한 연구)

  • 김정옥
    • Journal of the Korean Home Economics Association
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    • v.28 no.3
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    • pp.127-145
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    • 1990
  • The purpose of this study was to investigate a framework for family stress management. The subjects were 287 housewives habitated in Seoul. Cronbach's α, Pearson's r, Factor analysis, ANOVA, Frequency, Percent, Duncan's Multiple Range Test were conducted for the purpose of the study.

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