• Title/Summary/Keyword: and Factor Analysis

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Finite Element Analysis of Subsurface Crack Propagation in Half-space Due to Sliding Contact (유한요소법을 이용한 미끄럼 접촉시의 반무한체 내의 수평균열 전파해석)

  • 이상윤;김석삼
    • Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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    • 1999.06a
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    • pp.297-302
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    • 1999
  • Finite element analysis is peformed about the crack propagation in half-space due to sliding contact. The analysis is based on linear elastic fracture mechanics and stress intensity factor concept. The crack location is fixed and the friction coefficient between asperity and half-space is varied to analyze the effect of surface friction on stress Intensity factor for horizontal crack. The crack propagation direction is predicted based on the maximum range of shear and tensile stress intensity factor.

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Analysis on the Measurement and Shape Classification of the Head and Face for Korean Female Children Aged 9~12 Years (만 9세~12세 여아의 머리와 얼굴부위 측정 및 유형 분류)

  • 김선희
    • The Research Journal of the Costume Culture
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    • v.12 no.5
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    • pp.757-768
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    • 2004
  • This study was aimed to provide the fundamental and various measurement data of the head and face for Korean children. Two hundred sixty nine female children, aged nine to twelve years, participated for this study. The 28 regions on the head and face of the subjects were directly measured by the expert experimenters. Factor analysis, cluster analysis, GLM analysis and Tukey HSD test were performed' using these data. Through factor analysis, six factors were extracted upon factor scores and those factors comprised 71.42% for the total variances. Four clusters as their head and face shape were categorized using six factor scores by cluster analysis. Type 1 was characterized by the shorter head & face length and width and the lowest position from forehead to nose. Type 2 had the longer head & face length and width and the highest ear position and the largest mouse width. Type 3 was characterized by the longest and head & face type and the widest head & face girth. Type 4 was characterized by shortest head & face length the lower ear and lips position.

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An Analysis of the Work-Related Stress and Job Satisfaction in Hotel Cooks - Focused on the Five Diamond Hotels in Jeju Area - (호텔 조리사의 직무 스트레스 반응과 직무 만족 분석 - 제주지역 특1급 호텔을 중심으로 -)

  • Yang, Tai-Seok;Park, In-Soo;Lee, Young-Chen
    • Culinary science and hospitality research
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    • v.14 no.2
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    • pp.1-17
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    • 2008
  • This study analyzed the factors related to the stress which the top-rated chefs in Jeju suffer and conducted the multiple regression analysis to look into the effect of job-related stress on the stress reaction and the satisfaction with job, in order to examine the effect of job-related stress faced by hotel kitchen employees in performing duties and determine the effect of job-related stress on the reaction of individuals in the peculiar environment of a kitchen in a hotel. Job-related stresses were classified into five factors which were physical, individual, vocational, organizational, and social. The result of regression analysis, which was performed to figure out the effect of job-related stress on the stress reaction and the satisfaction with the job, indicated that the physical factor of job-related stress had the greatest effect on the physiological reaction, followed by the organizational factor, individual factor, and social factor, while the organizational factor of job-related stress had the greatest effect on the psychological reaction, followed by the individual factor, social factor, vocational factor, and physical factor. Meanwhile, the vocational factor of job-related stress had the greatest effect on behavioral re-action, followed by organizational factor and individual factor. The vocational factor of job-related stress had the greatest effect on the satisfaction with the job, followed by individual factor, organizational factor, social factor, and physical factor.

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Development of An Inventory to Classify Task Commitment Type in Science Learning and Its Application to Classify Students' Types

  • Kim, Won-Jung;Byeon, Jung-Ho;Kwon, Yong-Ju
    • Journal of The Korean Association For Science Education
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    • v.33 no.3
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    • pp.679-693
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    • 2013
  • The purpose of this study is to develop an inventory to classify task commitment types of science learning and to classify highschool students' task commitment types. Firstly, inventory questions were designed following the literature analysis on the task commitment components which involve self confidence, high goal setting, and focused attention. Prototype inventory underwent the content validity test, pilot test, and reliability test. Through these steps, final inventory was input to 462 high school students and underwent the factor analysis and cluster analysis. Factor analysis confirmed three components of task commitment as the three factors of inventory questions. In order to find how many clusters exist, factors of developed inventory became new variables. Each factor's factor mean was calculated and served as the new variable of the cluster analysis. Cluster analysis extracted five clusters as task commitment types. The 5 clusters were suggested by the agglomarative schedule and dendrogram gained from a hierarchical cluster analysis with the setting of the Ward algorithm and Squared Euclidean distance. Based on the factor mean score, traits of each cluster could be drawn out. Inventory developed by this study is expected to be used to identify student commitment types and assess the effectiveness of task commitment enhancement programs.

Classification of Fire Damaged Degree Using the Factor Analysis and Cluster Analysis from the Landsat TM Image (Landsat TM 영상에서 요인분석과 군집분석을 이용한 산불 피해정도 분류)

  • Kim, Sung-Hak;Kim, Yeol;Choi, Seung-Pil;Choi, Cheol-Soon
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2007.04a
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    • pp.211-214
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    • 2007
  • After the forest fire, as access is not easy, forest damage degree are determined with Landsat TM image rather than visual inspection. Therefore in this study, damaged areas are extracted with factor analysis and cluster analysis. Second factor analysis was performed for areas suspicious as forest fire damage areas to evaluate accuracy after separating into strong, medium and light forest fire areas.

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A study on the Attitudes of Inshore Fishery Seaman's based on Herzberg's two-factor theory - With emphasis on Large Purse Seine of Keumsung Fisheries - (Herzberg 이요인이론을 통한 근해 선원들의 태도에 관한 연구 - 금성수산 대형선망어업을 중심으로 -)

  • Kang, Jung-Woo;Han, Na-Young;Hong, Jae-Bum
    • The Journal of Fisheries Business Administration
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    • v.43 no.3
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    • pp.59-73
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    • 2012
  • This study has the purpose to examine the effects of hygiene factor(job environment factor) and motivation factor(job motivation factor) of seamen on satisfaction, turnover intention and organizational commitment. To that end, with the scope of study subjects limited to coastal waters seamen, positive analysis was done through literature study and questionnaire analysis, and focus was given to the prospect of acquiring seamen by change of outside environment. Results of analyzing the factors affecting coastal waters seamen satisfaction, turnover intention and organizational commitment were as follows. First, the factors that affect satisfaction significantly are personal relationship and willingness to participate. Second, the factor that affects turnover intention significantly is employment stability. Third, the factors that affect organizational commitment significantly are personal relationship and willingness to participate.

A Study on the Consumer Sensibility of Japanism Design (Japanism 디자인의 소비자 감성 연구)

  • 이은령;이경희
    • Journal of the Korean Society of Costume
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    • v.54 no.3
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    • pp.73-85
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    • 2004
  • The purpose of this study was to investigate the characteristic and sensibility of Japanism fashion designs which represented by Japanese designers and Western designers. The stimulus were 29 pictures of contemporary fashion designs which represented the Japanism style fashion designs from fashion collections. The data were analyzed by Cluster analysis, Factor analysis, Multidimensional Scaling Method and Regression Analysis. The specific objectives were as follows ; 1) As result of design analysis, Japanism fashion sensibility is unique and good-looking. 2) As result of the factor analysis. 4 factors which are Attractiveness, Attention, Maturity and Hardness and softness. 3) According to sensibility positioning, The Japanism fashion design was classified by Decorative-Simple, Hard-Soft. 4) As result of the Regression Analysis, The preference of Japanism fashion design was related to attractive factor. 5) As result of the Regression Analysis. The buying desirable of Japanism fashion design was related to attractive, attentive and mature factor.

Rotordynamic Analysis for Stepped-Labyrinth Gas Seals Using Moodys Friction-Factor Model

  • Ha, Tae-Woong
    • Journal of Mechanical Science and Technology
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    • v.15 no.9
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    • pp.1217-1225
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    • 2001
  • The governing equations are derived for the analysis of a stepped labyrinth gas seal generally used in high performance compressors, gas turbines, and steam turbines. The bulk-flow is assumed for a single cavity control volume set up in a stepped labyrinth cavity and the flow is assumed to be completely turbulent in the circumferential direction. The Moodys wall-friction-factor model is used for the calculation of wall shear stresses in the single cavity control volume. For the reaction force developed by the stepped labyrinth gas seal, linearized zeroth-order and first-order perturbation equations are developed for small motion about a centered position. Integration of the resultant first-order pressure distribution along and around the seal defines the rotordynamic coefficients of the stepped labyrinth gas seal. The resulting leakage and rotordynamic characteristics of the stepped labyrinth gas seal are presented and compared with Scharrers theoretical analysis using Blasius wall-friction-factor model. The present analysis shows a good qualitative agreement of leakage characteristics with Scharrers analysis, but underpredicts by about 20%. For the rotordynamic coefficients, the present analysis generally yields smaller predictied values compared with Scharrers analysis.

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The Evaluation of Water Quality in Coastal Sea of Incheon Using a Multivariate Analysis (다변량 해석기법을 이용한 인천연안해역의 수질평가)

  • Kim, Jong-Gu
    • Journal of Environmental Science International
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    • v.15 no.11
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    • pp.1017-1025
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    • 2006
  • This study was conducted to evaluate characteristic of water duality in coastal sea of Incheon using a multivariate analysis. The analysis data in coastal sea of Incheon was aquired by the NFRDI data which was surveyed from March 1997 to November 2003. Eleven water quality parameters were determined on each survey The results were summarized as follow : Water quality in Incheon coastal sea could be explained up to 64.62% by three factors which were included in loading of fresh water and nutrients by the land(36.98%), seasonal variation(16.19%), and internal metabolism (11.24%). The results of time series analysis by factor score, in case of factor 1, station 1 influenced by Han river was shown to high factor score and station 3 located by outer sea was shown to low factor score. In case of factor 2, station 1 was appeared to high variation and station 3 was appeared to low variation. The result of cluster analysis by station was classified into three group that has different water quality characteristics. Especially, station 1 which affected by Han river and station 4 which affected by sewage treatment plant was appeared to considerable water quality characteristics against other station. In yearly cluster analysis, three group was classified and water quality in 2003 years due to high precipitation was different to another year. It could be suggested from these results that it is important to control discharge of fresh water by Han rivet and sewage treatment plant for water quality management of coastal sea of Incheon.

A Validation of the Korean Version of the Filial Responsibility Scale-Adult (한국판 가족돌봄의무 척도(Filial Responsibility Scale-Adult)의 타당화)

  • Lee, Sun Young;Ahn, Hyun-nie
    • Korean Journal of Culture and Social Issue
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    • v.26 no.3
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    • pp.259-282
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    • 2020
  • This study examines the validity of the Filial Responsibility Scale-Adult (Past), developed by Jurkovic and Thirkield (1999), among Korean university students in their twenties. First, a preliminary scale consisting of 30 items was developed by translating the original scale into Korean and item analysis and exploratory factor analysis were conducted on 249 subjects. Based on the exploratory factor analysis, items in the emotional parentification factor were either deleted or included in the other remaining factors, resulting in a two-factor model containing 15 items. In order to confirm this, a confirmatory factor analysis was conducted on 318 independent subjects. As a result of a confirmatory factor analysis of the two competing models - the three-factor model consisting of 30 items based on the original scale and the two-factor(emotional experience and caring behavior) model consisting of 15 items gained as a result of the exploratory factor analysis - the two-factor model showed more suitable and the original scale was revised accordingly. The convergent validity, discriminant validity and predictive validity were all found to be satisfactory. Based on such results, implications, limitations and suggestions on follow-up studies are discussed.