• 제목/요약/키워드: T-test analysis

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A Study on Group-specific External Feature Concerns and Beauty Care Behaviors Depending on Narcissistic Propensity (자기애 성향에 따른 집단별 외모관심도 및 미용행동에 관한 연구)

  • Kim, You-Sung;Park, Ok-Lyun
    • Fashion & Textile Research Journal
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    • v.11 no.5
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    • pp.808-817
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    • 2009
  • The purpose of this study was to verify potential differences in group- specific external feature concerns and beauty care behaviors of Korean women in their 20's~40's depending on their narcissistic propensity. This study is to take psychological approaches to narcissistic propensity of our contemporary society, so that it can get better understanding about consumers and provide marketing data on beauty-related industry. To meet the above goals, total 400 sheets of questionnaire were distributed to subjects from March 30 to April 8, 2009. Out of 376 sheets of questionnaire collected, total 355 valid questionnaires except incomplete 21 ones were used for final data analysis. For data analysis, this study used SPSS 12.0 as statistic program to perform factor analysis, reliability test (Cronbac's ${\alpha}$ coefficient), cluster analysis, t-test, analysis of variance (ANOVA), Duncan's multiple range test and multiple regression analysis. As a result, this study could come to the following findings: First, according to cluster analysis depending upon different factors such as self-directed narcissism, others-conscious narcissism and others-sensitive narcissism, it was found that our women in 20's to 40's could fall into 4 groups, i.e. complex narcissism group, mixed narcissism group, others-sensitive narcissism group and dispirited narcissism group. Second, according to analysis on potential differences in external feature concerns among four groups depending on their narcissistic propensity, it was found that there were significant differences in all relevant factors among groups. Third, according to analysis on differences in beauty care behaviors among four groups depending upon their narcissistic propensity, it was found that there were significant differences in all relevant factors among groups. Fourth, according to analysis on potential factors of external feature concerns that may influence beauty care behaviors of complex narcissism group, it was found that those factors had significant effects on fashion-orientedness, cosmetic surgery and personality pursuit of this group. And it was also found that there were significant differences in fashion-orientedness, cosmetic surgery, makeup and hair styling of mixed narcissism group, others-sensitive narcissism group and dispirited narcissism group respectively.

Methodological Comparison of the Quantification of Total Carbon and Organic Carbon in Marine Sediment (해양 퇴적물내 총탄소 및 유기탄소의 분석기법 고찰)

  • Kim, Kyeong-Hong;Son, Seung-Kyu;Son, Ju-Won;Ju, Se-Jong
    • Journal of the Korean Society for Marine Environment & Energy
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    • v.9 no.4
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    • pp.235-242
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    • 2006
  • The precise estimation of total and organic carbon contents in sediments is fundamental to understand the benthic environment. To test the precision and accuracy of CHN analyzer and the procedure to quantify total and organic carbon contents(using in-situ acidification with sulfurous acid($H_2SO_3$)) in the sediment, the reference material s such as Acetanilide($C_8H_9NO$), Sulfanilammide($C_6H_8N_2O_2S$), and BCSS-1(standard estuary sediment) were used. The results indicate that CHN analyzer to quantify carbon and nitrogen content has high precision(percent error=3.29%) and accuracy(relative standard deviation=1.26%). Additionally, we conducted the instrumental comparison of carbon values analyzed using CHN analyzer and Coulometeric Carbon Analyzer. Total carbon contents measured from two different instruments were highly correlated($R^2=0.9993$, n=84, p<0.0001) with a linear relationship and show no significant differences(paired t-test, p=0.0003). The organic carbon contents from two instruments also showed the similar results with a significant linear relationship($R^2=0.8867$, n=84, p<0.0001) and no significant differences(paired t-test, p<0.0001). Although it is possible to overestimate organic carbon contents for some sediment types having high inorganic carbon contents(such as calcareous ooze) due to procedural and analytical errors, analysis of organic carbon contents in sediments using CHN Analyzer and current procedures seems to provide the best estimates. Therefore, we recommend that this method can be applied to measure the carbon content in normal any sediment samples and are considered to be one of the best procedure far routine analysis of total and organic carbon.

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Coupled T-H-M Processes Calculations in KENTEX Facility Used for Validation Test of a HLW Disposal System (고준위 방사성 폐기물 처분 시스템 실증 실험용 KENTEX 장치에서의 열-수리-역학 연동현상 해석)

  • Park Jeong-Hwa;Lee Jae-Owan;Kwon Sang-Ki;Cho Won-Jin
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.4 no.2
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    • pp.117-131
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    • 2006
  • A coupled T-H-M(Thermo-Hydro-Mechanical) analysis was carried out for KENTEX (KAERI Engineering-scale T-H-M Experiment for Engineered Barrier System), which is a facility for validating the coupled T-H-M behavior in the engineered barrier system of the Korean reference HLW(high-level waste) disposal system. The changes of temperature, water saturation, and stress were estimated based on the coupled T-H-M analysis, and the influence of the types of mechanical constitutive material laws was investigated by using elastic model, poroelastic model, and poroelastic-plastic model. The analysis was done using ABAQUS, which is a commercial finite element code for general purposes. From the analysis, it was observed that the temperature in the bentonite increased sharply for a couple of days after heating the heater and then slowly increased to a constant value. The temperatures at all locations were nearly at a steady state after about 37.5 days. In the steady state, the temperature was maintained at $90^{\circ}C$ at the interface between the heater and the bentonite and at about $70^{\circ}C$ at the interface between the bentonite and the confining cylinder. The variation of the water saturation with time in bentonite was almost same independent of the material laws used in the coupled T-H-M processes. By comparing the saturation change of T-H-M and that of H-M(Hydro-Mechanical) processes using elastic and poroelastic material mod31 respectively, it was found that the degree of saturation near the heater from T-H-M calculation was higher than that from the coupled H-M calculation mainly because of the thermal flux, which seemed to speed up the saturation. The stresses in three cases with different material laws were increased with time. By comparing the stress change in H-M calculation using poroelasetic and poroelasetic-plastic model, it was possible to conclude that the influence of saturation on the stress change is higher than the influence of temperature. It is, therefore, recommended to use a material law, which can model the elastic-plastic behavior of buffer, since the coupled T-H-M processes in buffer is affected by the variation of void ratio, thermal expansion, as well as swelling pressure.

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The Relation between Dental Technician's Social Support and Individual Competency (치과기공사가 인식하는 사회적 지지 척도와 개인역량과의 상관관계 조사)

  • Han, Min-Soo;Lee, Ju-Yeon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.7
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    • pp.4449-4456
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    • 2014
  • This study analyzed the dental technician's social support and individual competency as well as its correlation. 200 dental technicians in Seoul, Incheon, and Chunchungnamdo area were selected. The survey was carried out from April 28, 2012 to May 25, 2012 using a self-administered questionnaire. Regarding the tools for this study, a structured questionnaire was used with proven reliability and feasibility, and the contents of the questionnaire consisted of 55 questions based on the related references. The subjects completed the questionnaire regarding the general characteristics, social support, and individual competency. Data analysis was processed using computerized system with SPSS 18.0. Statistical analysis techniques including frequency, percentage, T-test, ANOVA analysis and correlation. An analysis of the research subjects' social support level revealed a significant difference in the item of marital status and residence area (p<0.05). The average in the social support was indicated to be high with 3.33. An analysis of the research subjects' individual competency revealed a significant difference in the items of age, marital status, residence area, carrier, job position, education (p<0.05). The average in the individual competency was indicated to be high with 3.68. The correlation between social support and individual competency showed that most of the variables had an association, showing that more social support leads to more individual competency.

Analysis of Effectiveness of Spectrum of Energy and Image Quality Evaluation by Aluminium Filter in the added Compound Filtration (에너지 스펙트럼과 화질평가를 통한 복합부가여과에서 알루미늄 여과판의 효율성 분석)

  • Kim, Sang-Hyun;Choi, Jae-Ho
    • Journal of radiological science and technology
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    • v.38 no.3
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    • pp.187-197
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    • 2015
  • This study analysed the effectiveness of aluminium(Al) filter in the added compound filtration for the removal of characteristic radiation by energy spectrum and image evaluation. 0.1, 0.2, 0.3 mm copper with and without 1 mm Al were evaluated. The energy spectrum was measured using the GATE and evaluated separately by each energy. Image quality was evaluated by PSNR, MAE, MSE, CNR, SNR and qualitative analysis was performed by seven items for resolution and contrast from chest x-ray criteria of National Cancer Screening and Cardiovascular evaluation table. In the analysis of the quality of the energy per photon spectrum with the exception of a low energy region, without Al were superior in all area. PSNR MAE, MSE, CNR, SNR and qualitative analysis were the same or slightly better. PSNR was over 30 dB and all significant and the p>0.05 in the T-test of qualitative analysis. The energy spectrum and image quality have little difference between before and after use of Al filter. Therefore, it is effective to use the Al filter for the radiation dose management with the compensation capability of DR system.

A Study on Occupation-appraisal of Students' Majorin in Culinary and Food Service (외식전공 대학생의 외식산업분야 직업평가에 관한 연구)

  • Jin, Yang-Ho
    • Culinary science and hospitality research
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    • v.22 no.4
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    • pp.240-253
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    • 2016
  • This study was undertaken to better understand the professional recognition of the food service industry of college students in food service realted majors based on characteristics of the respondents In order to achieve the purpose of the study, 211 questionnaire surveys were colelcted in the period from May 19 to May 30, 2014. The study conducted regression analysis by using SPSS Win18.0 package, for frequency analysis, exploratory factor analysis, analysis of reliability, correlation analysis tests, t-test, andone way ANOVA. Measure of occupation self-esteem, positive values, social reputation, negatively handled, relatively effectively configuration, each construct was to ensure reliable and statistically significant relevance. The results were analyzed by the difference factor of occupation self-esteem according to demographic characteristics, depending on gender, has confirmed that the perceived social reputation in a different way, depending on the differences in grade, to verify that you are aware of the positive values in a different way. Also Department has been analyzed with the degree of cognitive differ for positive values and negative treatment in accordance with, understand that it perceives the relative effects and negative treatment in accordance with the future desired profession in a different way. This suggests that there is a need to find ways to satisfaction and career decision level of major occupational self-esteem is high is to raise the occupational self-esteem major of food service industry college students based on the results of previous research get higher. In particular, I would like to emphasize that there is a need provide a substantial improvement on the negative treatment and the most negative recognize and social reputation is for the work of the food service industry.

The Assessment of the Landscape Planning Phases by Importance-Performance Analysis - Focused on the Landscape Planning of Development Sites - (중요도-성취도 분석에 의한 경관계획 작성 단계별 평가 - 개발대상지 경관계획을 중심으로 -)

  • Joo, Shin-Ha;Baek, Woon-Hae;Shin, Ji-Hoon;Mok, Jeong-Hun
    • Journal of the Korean Institute of Landscape Architecture
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    • v.36 no.4
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    • pp.74-82
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    • 2008
  • The purpose of this study is to reflect on the results of the assessment and analysis of landscape planning projects according to planning phases in a landscape planning system based on landscape law. An assessment of the importance and performance of landscape planning elements by planning phases was studied by statistically descriptive analysis, variation analysis, statistical t-test and importance-performance analysis. As a result of the evaluation, the performance of existing landscape planning projects is 3.813 and the importance of planning elements is 5.648. This means that in spite of the importance of landscape planning elements, the performance of existing landscape planning projects is not sufficient to cover the importance of landscape planning elements. In addition, 'site landscape survey' and 'landscape design guideline' sections are not sufficient when they are compared to 'landscape concept plan' and 'landscape basic plan' to complete the landscape planning projects required by landscape law. It means also that the landscape survey and landscape design guidelines should be complementarily practiced in order to increase the effectiveness of landscape planning projects. As the research is practiced by survey methods on landscape planning projects which are only new development sites, the results cannot represent all types of landscape planning projects. Nevertheless, the results can be applied to new landscape planning at new development sites or old cities to increase effectiveness.

Influential Factors of Foreign Market Entry of Korean Fashion Firms (한국 패션 기업의 해외 시장 진입에 영향을 주는 요인에 관한 연구)

  • Cho, Yun-Jin;Lee, Yu-Ri
    • Journal of the Korean Society of Clothing and Textiles
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    • v.30 no.12 s.159
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    • pp.1768-1777
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    • 2006
  • As the fashion industry comes under the influence of globalization throughout all fields of industry, the globalization and the market entry strategies are required for Korean fashion firms. This study attempted to analyze the factors influencing foreign entry mode of Korean fashion business based on Eclectic Theory. Data collection has been carried out from November 25 until December 25, 2005. The questionnaires were sent through e-mail or fax to 622 trading companies. 67 questionnaires were returned for a response rate of 10.7%. Of these returns, 61 usable questionnaires were employed for data analyses. Descriptive analysis, factor analysis, discriminant analysis, and t-test were used for data analysis. First, the most important venture motivation was price competitiveness and many firms were engaged in both production and sales in their target countries, which were mainly in Southeast Asia. Second, the firm's ability and experience were found out as ownership advantage factor, investment stability and market potential as location advantage factor, and contract stability as internalization advantage factor. Third, the result of discriminant analysis showed that location advantage factor was a significant factor in predicting the entry of fashion firms into foreign countries.

Factors Affecting Medicines Expenditure Costs - Using Korean Medical Panel Data (의약품 지출 비용에 미치는 영향 요인 - 한국의료패널자료를 활용하여)

  • Kim, Yun-Jeong;Hwang, Byung-Deog
    • The Journal of the Korea Contents Association
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    • v.18 no.4
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    • pp.664-676
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    • 2018
  • This study used raw data from the Korea Medical Panel Survey for 2014 to analyze the factors affecting the cost of medicine expenditure. A total of 3,107 people with medical expenses were selected for the final analysis. Analysis methods were frequency analysis, crossover analysis, regression analysis and t-test. The significance level of all tests was p = .05. The prescription cost was 72.4%, the minimum cost was 84 won, the maximum cost was 270,653 won, and the highest amount was 'over 3,000 won~less than 10,000 won' (31.7%). The general pharmaceuticals cost was 81.8%, the minimum cost was 800 won, the maximum cost was 2,718,000 won, and the highest amount was 'less than 20,000 won' (31.4%). The herbal medicine cost was 9.4%, the minimum cost was 4,000 won, the maximum cost was 2,700,000 won, and the highest amount was 'over 100,000 won' (37.8%). The medicines expenditure was the maximum cost was 2,760,093 won, and the highest amount was 'over 100,000 won' (27.0%). Factors affecting medicine expenditure were gender, marital status, income quintile, easement, and subjective health status.

The Factors of Related towards Intention to Organ Donation by the Citizens of Busan (부산시민의 장기기증의사에 관련된 요인)

  • Hwang, Byung-Deog;Im, Bock-Hee;Jung, Woong-Jae
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.1
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    • pp.341-350
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    • 2011
  • This study aims at providing basic data on organ donation by analyzing factors of influencing toward intention to organ donation and further at improving people's consciousness on organ donation, subject to citizens of Busan City. The data was collected for 47 days from 14 July to 31 August, 2009. Among a total of 2200 cases of the questionaries, only 2042 cases were used. For data analysis, SPSS 17.0 was used, and for the specific analysis method frequency analysis to understand general characteristics of the participants. In addition, examination on T-test and ANOVA analysis were conducted after analyzing the factors for participants' consciousness on organ donation, and logistic regression analysis for understanding of relations between participants' will to donate organs and general characteristics. The results of this study are summarized as follows; First, among the participants, those who have heard about organ donations were 71.6%. Second, the factors that general characteristics influence on the attitudes towards organ donation include gender, chronic diseases or incurable diseases in the respondents or their family, religion, acceptive attitude factor, exclusive attitude factor and positive attitude factor towards organ donation. Based on the results, in order to raise people's consciousness on organ donation and form social sympathy, more than anything else, public mass media like broadcasting is important. In addition, as organ donation centers and related institutions prepare nationwide events, we should endeavor to prepare the opportunities in various ways to converse people's consciousness on organ donation and further put organ donation into practice.