• 터널과지하공간
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• 제17권1호
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• pp.9-16
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• 2007

굴진장이 터널의 안정성 및 시공비에 미치는 영향에 대해서는 많은 연구자와 기술자들이 잘 알고 있지만, 아직 굴진장 결정에 대해서 일관된 절차가 수립되지는 못한 실정이다. 본 연구에서는 굴진장을 고려한 연암터널의 막장과 무지보 구간의 거동형태를 실내모형실험, PFC3D 및 FDM 해석을 통하여 조사하였다. 총 다섯 개의 거동형태를 정의하였고, 막장 안전율과 설계 도표를 통해 거동형태를 정량적으로 판단할 수 있도록 하였다. 비록 본 연구에서 제안한 방법이 몇몇 제한을 갖지만, 굴진장과 굴착의 최적화를 위한 유용한 정보를 제공할 수 있을 것으로 사료된다.

• Korean Journal of Acupuncture
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• 제19권2호
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• pp.1-12
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• 2002

Objectives : Assuming That the Characteristic of Meridian System Has Been Similar to This of Electric Potentials in Human Body and That Measurements of Electric Potential at Well and Sea Points in Branches of the Twelve Meridians Will Be Representative of Measurements of the Twelve Meridians, to Measure the Electric Potentials in Healthy Volunteers(HG), Patients Diagnosed As a Cerebral Infarction(CG), a Arrhythmia(AG), a Other Intervertebral Disc Disorder(IG), and a Joint Disorder(JG), and Then to Find Out the Characteristic of Biophysical Meridian System, Finally to Compare with the Results of the Electric Potential in Those Groups. Methods : We Selected Who HG Were Diagnosed by a Blood Test, Urine Examination and Differentiation of Syndromes by Five Viscera among Volunteers, CG by CT and Wind-Syndrome Caused by Hyperactivity of the Liver-Yang, AG by EKG, CT, and Deficiency or the Heart Blood, IG by X-ray or CT and Pain in Waist, and JG by X-ray and Knee Pain. Their Electric Potential of Well and Sea Points in the Meridians Were Measured by hysiograph. Results and Conclusions : Measurements Were Analyzed by Factor Analysis, Analysis of Variance, and Logistic Regression Model, We Obtained That Most of the Results, In Conclusion, Hold Good for the Classical Meridian Doctrine.

• 한국의류산업학회지
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• 제15권5호
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• pp.777-786
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• 2013

This study identifies the influences of appearance-related consumption behavior according to interpersonal relations and masculinity examined through amediated effect of appearance concerns based on a structural study method. Five hypotheses were established to verify the relationships of interpersonal relations, masculinity and appearance-related consumption behavior. Questionnaires were administered to 201 males in their 20s to 50s living in Daegu South Korea. The SPSS 20.0 package utilized for data analysis included frequency analysis, factor analysis, correlation analysis, regression analysis and Cronbach's ${\alpha}$. This study utilized an Amos 21.0 program, a Confirmative Factor Analysis(CFA)and a Structural Equation Modeling(SEM). The results of the study are as follows: First, the appearance concern showed a partial mediation effect between measurement variables that verified the causal relationship of the structural model. Second, interpersonal relations showed a positive influence on masculinity. Third, masculinity showed a positive influence on the appearance concern. Fourth, masculinity had a positive influence on appearance-related consumption behavior. Fifth, interpersonal relations did not have a significant influence on appearance-related consumption behavior. Sixth, the appearance concern showed a positive influence on appearance-related consumption behavior. The findings of this study can influence a market segmentation strategy by predicting future emotional and new consumption markets strategies for male's appearance-related product.

• The Journal of Korean Physical Therapy
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• 제19권4호
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• pp.33-41
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• 2007

Purpose: To investigate environmental enrichment and nerve stimulation follows in application times with the change of BDNF & Trk-B receptor in the motor cortex and spinal cord. Methods: Experimental groups were divided into the five groups. Group I: normal control group, Group II: experiment control group, Group III: sciatic never electrical stimulation after MCAO, Group IV: application of only environmental enrichment after MCAO, Group V: never electrical stimulation with environmental enrichment after MCAO. Histologic observation and coronal sections were processed individually in goat polyclonal antibody phosphorylated BDNF and rabbit polyclonal antibody Trk-B receptor. Results: In immunohistochemistric response of BDNF and Trk-B, group II were showed that lower response effect at postischemic 1 days, 3 days, and 7 days. Group V were showed that increase response effect at postischemic 3 days, 7 days and 14 days. Specially showed that the most response effect at postischemic 14 days. In neurobehavioral assessment, group V were significantly difference from other groups on between-subject effects. Conclusion: The above results suggest that combined environmental enrichment with peripheral nerve electrical stimulation in focal ischemic brain injury were more improved that the change of BDNF & Trk-B receptor expression than non treatment.

• 한국안전학회지
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• 제36권3호
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• pp.60-65
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• 2021

Human error is often in part in the cause of accidents and the result of various factors in an organization. Accidents should be investigated to elucidate all causes. Therefore, to reduce accidents, it is necessary to identify which factors affect human error within the organization. In this study, five groups of influencing factors on human error were selected using previousresearch, and operational definitions were made based on them. In addition, a questionnaire for measuring latent variables by operational definition was developed as an observation variable, and responses were received from employees of chemical companies in Ulsan. Based on SEM (structural equation modeling) analysis, 1) confirmatory factor analysis of variables in the human error model, 2) reliability and validity of latent variables, 3) correlations among latent variables, 4) influencing coefficients among influence factors, and 5) the verification results of the paths that these influencing factors have on human error are introduced in this study.

• Clinical and Experimental Pediatrics
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• 제65권3호
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• pp.131-135
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• 2022

Purpose: There is inconsistent evidence about the association between fetal nuchal cord and the risk of autism spectrum disorder (ASD). We performed a meta-analysis to investigate whether fetal nuchal cord is associated with an increased risk of ASD in offspring. Methods: Three main English databases were searched until January 2021. The Newcastle-Ottawa Scale was used to assess study quality. Study heterogeneity was determined using the I 2 statistic, while publication bias was assessed using Begg and Egger tests. Results are presented as odds ratios (ORs) and relative ratios with 95% confidence intervals (CI) and were determined by a random-effects model. Results: Five articles (1 cohort, 4 case-control; 3,088 total children) were included in the present meta-analysis. Fetal nuchal cord was not a risk factor for ASD (OR, 1.11; 95% CI, 0.66-1.57). There was homogeneity among studies that reported a risk of ASD (I²=0.0%). Conclusion: Our results showed that fetal nuchal cord is not a risk factor for ASD. Future large cohort studies should confirm this finding.

• 유통과학연구
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• 제10권4호
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• pp.47-53
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• 2012

현대의 많은 기업은 경쟁사에 비해 자사기업의 제품에 대한 긍정적인 이미지를 증대시키기 위해 광고에 많은 노력을 기울여왔고, 최근 들어 멀티미디어의 급속한 발달은 광고의 효용성을 크게 증대시켰다. 이러한 상황에서 최근 소비환경의 급속한 변화는 수많은 브랜드를 양산해내고 있다. 또한 보통 소비자들이 쉽게 접하고 기업의 이미지의 제고를 통하여 시장우위를 점하기 위해서는 광고기법을 많이 활용할 수밖에 없다. 이러한 현대 광고행태는 모델이 차지하고 있는 비중을 더욱 커지게 만들고 있다. 따라서 본 연구는 광고모델의 유형별 특성을 검토해 보고자 하는 것을 목적으로 하였다. 연구를 위한 자료는 20대 이상의 대학생 남녀 230명을 대상으로 2011년 10월 20일부터 11월 5일까지 수집되었다. 또한, 광고모델의 특성이 구매의도와 브랜드 태도에 미치는 영향의 요인을 조사하기 위하여 수집되었으며, 자료의 수집은 20대 대학생 230명을 대상으로 수행하고, 조사방법으로는 설문지조사법을 이용하여 조사요원들이 1부씩 배부하여 회수하는 방법으로 연구를 진행하였다. 40부씩 5가지 모델의 사진이 첨부된 설문지를 통하여 광고모델별의 중점적 특성에 대해 파악한다. 결과를 요악하여 보면 구매의도에 미치는 광고모델의 특성과 브랜드 태도에 미치는 특성은 서로 비슷하지만 상이한 점을 찾아 볼 수 있다. 첫째, 구매의도에 미치는 영향으로는 신뢰성과 효율성이라는 결과가 도출되었다. 구매의사가 강하든 강하지 않든 고객들은 광고를 통한 구매의도의 영향을 받을 때 이 두 가지 특성을 가장 많이 고려한다는 결과이다. 광고를 통한 제품의 신용적인 면과 광고내용의 전달력을 위주로 판단하는 경향으로 드러났다. 둘째, 브랜드태도에 미치는 영향으로는 외향적 특성, 신뢰성, 효율성이라는 결과가 도출되었다. 브랜드 태도는 소비자나 고객이 그 기업에 대해 갖는 태도라고 할 수 있다. 이렇듯 구매 후에도 생성이 되고 소멸이 되는 이 브랜드 태도는 기업이 가장 강구하는 부분이다. 브랜드를 대신하여 광고를 하는 광고모델에 따라 브랜드 태도는 달라진다. 이 점을 유의하여 보았을 때, 광고모델의 외향적인 특성 또한 중요시 된다는 결과가 도출되었다. 따라서, 광고모델의 특성이 구매의도와 브랜드태도의 미치는 영향 중에서 브랜드 태도는 외향적 특성이 추가되어졌다. 이 도출의 결과는 브랜드 태도를 형성하는데 있어서 광고모델의 이미지가 직관된다고 설명이 되어 진다. 이렇듯 고객은 광고를 통해 소비자를 유혹하며, 광고상품에 대해 구매를 끌어당길 수 있다. 하지만 기업의 브랜드에 대한 긍정적인 태도를 확보하기 위하여 광고모델의 외향적인 이미지 또한 중요하다. 예를 들어 박경림은 10년 전 쯤 화장품 광고를 찍은 적이 있었다. 화장품 모델로 활약하며 토크프로그램에서 화장품 광고와 밀접한 말실수를 통해 손해배상을 하게 된 적이 있다. 당시 그 화장품을 구매한 고객들은 고액에 해당되는 금액 환불을 요구하였다. 이렇듯 기업 즉 브랜드의 얼굴을 맡는 역할은 광고모델이라 할 정도로 큰 역할을 하고 있는 것이다. 본 연구의 한계점으로는 대학생을 중심으로 한 점이 가장 큰 한계점이라고 지적할 수 있다. 또한 설문지 수가 230부에 불과하다는 점이 다소 부족함을 느끼게 만드는 요인이다. 더 나아가서, 광범위한 분석이 아니라 세분화하여 구체적인 분석을 도출할 수 있어야 했는데, 그러한 점이 본 연구의 한계점이라 할 수 있다. 향후 연구는 이러한 부족한 부분을 보완하고, 더욱 발전적인 방향으로 논의가 진행될 수 있도록 해야겠다.

• Journal of Nutrition and Health
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• 제45권4호
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• pp.390-399
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• 2012

The objective of this study was to develop and evaluate the construct validity of a Nutrition Quotient (NQ) for children. In a previous report (Kang, et al., 2012), the food behavior checklist for children's NQ, consisting of 19 items, was grouped into a 5-factor structure according to the exploratory factor analysis: balance, diversity, moderation, regularity, and practice. In this study, the construct validity of the NQ was assessed using a confirmatory factor analysis. Elementary school students (n = 1,393) from six large cities completed the NQ test. Indicator tests suggested an adequate model fit (goodness of fit index = 0.9613; adjusted GFI = 0.95; standardized root mean square residual = 0.0464; chi-square test statistics of < 0.001 p-value, 82.1), and item loadings were significant for all subscales (p < 0.05). The standardized path coefficients were used as the weights of the items. The NQ and the 5 factor scores of the student were calculated by the obtained weights of the questionnaire items. Logistic regression was applied to find the significant factors in order to affect a specific nutrient status. The receiver operation characteristic curve analyses were performed in order to find diagnostic cut-off points of the five factors. The food behavior checklist for children's NQ would be a handy and suitable instrument for evaluating dietary behaviors of Korean children.

• Safety and Health at Work
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• 제9권2호
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• pp.224-231
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• 2018

Background: Organizations are pursing complex and diverse aims to generate higher profits. Many workers experience high work intensity such as workload and work pressure in this organizational environment. Especially, psychological burden is a commonly used term in workplace of Republic of Korea. This study focused on defining the psychological burden from the perspective of occupational safety and health and tried to develop a scale for psychological burden. Methods: The 48 preliminary questionnaire items for psychological burden were prepared by a focus group interview with 16 workers through the Copenhagen Psychosocial Questionnaire II and Mindful Awareness Attention Scale. The preliminary items were surveyed with 572 workers, and exploratory factor analysis, confirmatory factor analysis, and correlation analysis were conducted for a new scale. Results: As a result of the exploratory factor analysis, five factors were extracted: organizational activity, human error, safety and health workload, work attitude, and negative self-management. These factors had significant correlations and reliability, and the stability of the model for validity was confirmed using confirmatory factor analysis. Conclusion: The developed scale for psychological burden can measure workers' psychological burden in relation to safety and health. Despite some limitations, this study has applicability in the workplace, given the relatively small-sized questionnaire.

• 대한간호학회지
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• 제53권3호
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• pp.324-339
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• 2023

Purpose: This study aimed to valuate the reliability and validity of the Korean version of the 5C Psychological Antecedents of Vaccination (K-5C) scale. Methods: The English version of the 5C scale was translated into Korean, following the World Health Organization guidelines. Data were collected from 316 community-dwelling adults. Content validity was evaluated using the content validity index, while construct validity was evaluated through confirmatory factor analysis. Convergent validity was examined by assessing the correlation with vaccination attitude, and concurrent validity was evaluated by examining the association with coronavirus disease 2019 (COVID-19) vaccination status. Internal consistency and test-retest reliability were also evaluated. Results: Content validity results indicated an item-level content validity index ranging from .83 to 1, and scale-level content validity index, averaging method was .95. Confirmatory factor analysis supported the fit of the measurement model, comprising a five-factor structure with a 15-item questionnaire (RMSEA = .05, SRMR = .05, CFI = .97, TLI = .96). Convergent validity was acceptable with a significant correlation between each sub-scale of the 5C scale and vaccination attitude. In concurrent validity evaluation, confidence, constraints, and collective responsibility of the 5C scale were significant independent predictors of the current COVID-19 vaccination status. Cronbach's alpha for each subscale ranged from .78 to .88, and the intraclass correlation coefficient for each subscale ranged from .67 to .89. Conclusion: The Korean version of the 5C scale is a valid and reliable tool to assess the psychological antecedents of vaccination among Korean adults.