• International Journal of Railway
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• v.6 no.3
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• pp.112-119
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• 2013

A mid-size RC test apparatus (MRCA) equipped with a program is developed that can test samples up to D=10 cm diameter and H=20 cm height which are larger than usual samples used in practice. Using the developed RC test apparatus, two types of crushed trackbed foundation materials were tested in order to get the shear modulus reduction curves of the materials with changing of shear strain levels. For comparison purpose, large repetitive triaxial compression tests (LRT) with samples of height H=60cm and diameter D=30 cm were performed also. Resilient modulus obtained from the LRT was converted to shear modulus by considering elastic theory and strain level conversion and were compared to shear modulus values from the MRCA. It is found from this study that the MRCA can be used to test the trackbed foundation materials properly. It is found also that strain levels of $E_{v2}$ mostly used in the field should be verified considering the shear modulus reduction curves and proper values of $E_{v2}$ of trackbed foundation must be used considering the strain level verified.

• Korean Journal of Health Education and Promotion
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• v.12 no.2
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• pp.1-35
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• 1995

This study conducted from September 1 through October 30, 1993, in order to provide the data related to the industrial health policy and the development of health education program and the basic foundation. The data collected were analyzed in order to determine factors affecting knowledge and practice(KP) on health level of industrial workers. 3,396 workers were randomly selected from Kyungki, Inchun, Kwangju, Taejon, Taegu, Ulsan, Pohang, Masan and Changwon, Questionnaire forms were prepared and the personnel selected were interviewed by a graduate student with the aid of health management. As mentioned before, it was a serious problem that the industrial workers got the fairly low score of health KP and they did not practice what they know. Therefore it is necessary to establish the industrial policy and develop the education program for workers practice what they know and cooperate with related specialists, the management and the government authorities, Therefore we must ensure the good health of workers through a healthy home life, and a healthy work place and environment. Furthermore this will contribute to industrial peace and the development of korea.

• Women's Health Nursing
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• v.17 no.1
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• pp.31-38
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• 2011

Purpose: The purpose of this study was to investigate the relationships among marital satisfaction, spousal support and practice of Taekyo among pregnant women. Methods: This study was conducted by the use of questionnaire surveys with two hundred and eighty-three pregnant women at several hospitals located in Gyeonggi province and Daejeon city from October 2008 to April 2009. Contents of questionnaire included marital satisfaction, spousal support and practice of Taekyo. Descriptive statistics, t-test, ANOVA, Pearson correlation, and stepwise multiple regression were conducted for data analysis using SPSS/WIN 17.0 program. Results: Degree of marital satisfaction, spousal support, and practice of Taekyo showed the high ranking among pregnant women. There was a significant difference in order of fetus, need for Taekyo, and time in Taekyo. There was a positive relationship between marital satisfaction, spousal support, and practice of Taekyo. The significant factors influencing the practice of Taekyo was connected with marital satisfaction, order of fetus and time in Taekyo. The total explanatory range was 29.3%. Conclusion: There is a need for multidimensional strategy in improving marital satisfaction. This study can be used as a foundation for maternal nursing education program and can be developed for practice of Taekyo.

• Journal of Venture Innovation
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• v.6 no.3
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• pp.165-184
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• 2023

Since municipal welfare institutions operate for different purposes from general companies or public enterprises, ESG practice items and model construction should be conducted through various and comprehensive social welfare studies. Since there are not many studies available in domestic welfare institutions yet and there are no suitable ESG management utilization indicators, the Cheonan Welfare Foundation's strategy and management strategy system were established to spread the model to other welfare institutions and become a leading foundation through education and training. The foundation and front-line welfare institutions selected issues identification and key issues through the foundation's empirical analysis and criticality analysis, focusing on understanding ESG management and ways to establish a practice model that positively affects institutional image and business performance. Based on this, the promotion system was examined by establishing a performance management plan after deriving appropriate strategies and establishing a strategic system for social welfare institutions. Environmental and social responsibility, transparent management, safety management system establishment, emergency and prevention, user (customer) satisfaction system establishment, anti-corruption prevention and integrity ethics monitoring and evaluation, responsible supply chains, and community contribution programs. This study attempted to specifically present efforts to settle ESG management through the consideration of the Cheonan Welfare Foundation. Therefore, it is considered to be useful data for developing ESG management by referring to the systematic development process of the Cheonan City Restoration Foundation to develop ESG measurement indicators.

• Journal of the Korean Society for Railway
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• v.2 no.4
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• pp.20-31
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• 1999

When a foundation on the ground with tunnel is constructed, the ultimate bearing capacity of a footing is reduced by tunnel. In practice, structure may bate a considerable damage because of large settlement. This study shows that the settlement which is caused by variety of the ultimated bearing capacity leads fatal damages to the footing above tunnel. Therefore, it is necessary to study on the reduction both of the ultimate bearing capacity which leads a failure and of tolerable settlement which satisfies the safety of the building. For this reason, the variety of ultimated bearing capacity was analyzed using tub-dimensional elasto-plastic finite difference method in this paper. As a result, bearing capacity of the foundation above tunnel should be determined after establishing limit of allowable settlement and considering reduction-ratio of bearing capacity.

• Journal of the Korean Society of School Health
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• v.30 no.3
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• pp.202-210
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• 2017

Purpose: This study was to determine the effect of knowledge of and attitude to Breast Self-Examination (BSE) on female university students' intention to practice. Methods: The subjects were female university students who participated in the Pink Ribbon Campaign of the Korea Breast Health Foundation held at H University on October 11, 2016. The data were collected using a questionnaire in Naver Office Form. The data were analyzed by $x^2$ test, t-test, Mann-Whitney U test, ANOVA and logistic regression model using SPSS 21.0 program. Results: Significant factors influencing the intention to practice were BSE educational experience and the benefits of BSE. The odds ratios were 3.61 and 5.92, respectively. Conclusion: It was found that the benefits of BSE were more influential than the educational experience on BSE as an influencing factors of BSE practice intention. Also, it was confirmed that attitude should be considered more important than knowledge in order to increase their practice intention. Since the benefits, among attitudinal factors, were confirmed as an influencing factor, BSE educational programs for female university students should put more focus on the benefits of BSE, not just sticking to delivering related knowledge.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.6
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• pp.3635-3647
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• 2014

This study was conducted to describe the relationship of Self-Directedness, Clinical Practice Experience and Clinical Practice Satisfaction of Nursing students. The participants were 223 nursing Students in K City who were surveyed using self report questionnaires from December 5 to December 20 and the data was analyzed using SPSS 20.0. There was a significant positive correlation among Self-Directedness, Clinical Practice Experiences and Clinical Practice Satisfaction. The predictors influencing Clinical Practice Satisfaction for Nursing students were Self-Directedness, Clinical Practice Experience and the factors explained 27.8% of Clinical Practice Satisfaction. The results of this study provided a foundation to develop efficient Clinical Practice program to improve Clinical Practice Satisfaction of Nursing students.

• Archives of Plastic Surgery
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• v.45 no.6
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• pp.557-563
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• 2018

Background Numerous Dupuytren's fasciectomy techniques have been described, each associated with unique surgical challenges, complications and recurrence rates. We describe a common ground surgical approach to Dupuytren's disease; 3-dimensional fasciectomy (3DF). 3DF aims to address the potential contributors to the high recurrence rate of Dupuytren's disease and unite current limited fasciectomy practice that varies considerably between surgeons. Methods We describe the 3DF principles; raising thin skin flaps (addressing dermal involvement), excising diseased palmar fascia with a 3-5 mm clearance margin (treating highly locally recurrent conditions) and excising the vertical septae of Legueu and Juvara (providing deep clearance, hence addressing all potentially involved pathological tissue). The surgical outcomes between traditional limited fasciectomy (LF) and 3DF are compared. Results From the 786 operations included (n=585), postoperative recurrence rates were significantly lower for the 3DF group (2/145, 1.4%) than the LF group (72/641, 11.2%) (P= 0.001), and the time to recurrence was significantly longer ($5.0{\pm}0years$ vs. $4.0{\pm}0.2years$; P<0.0001). With recurrence excluded, there were no differences between the postoperative complication rates for 3DF (5/145, 3.5%) and LF (41/641, 6.4%) (P=0.4). Conclusions Our results suggest that 3DF leads to lower recurrence rates and a longer disease-free period for patients, without increasing complications. 3DF provides a safe, efficacious, common ground surgical approach in the treatment of Dupuytren's flexion deformity.

• Journal of the Korean Society of Hazard Mitigation
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• v.5 no.2 s.17
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• pp.29-35
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• 2005

In Korea more than ninety bridges are collapsed every year by flood, which causes the scour of pier foundation. Researches on the quantitative assessment method to assess the integrity of bridge against scour have not been organized systematically in the bridge design practice and maintenance area. In this study, dynamic characteristics assessment experiments are carried out as an emergency inspection method to assess the integrity of the pier foundation for scour after a flood. According to the dynamic characteristics assessment experiment, which simulates foundation scour of the spread footing pier, foundation scour can be evaluated by the first mode natural frequency of the pier.

• International Journal of High-Rise Buildings
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• v.6 no.1
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• pp.83-89
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• 2017

Due to the time-dependent properties of materials, structures, and loads, accurate time-dependent effects analysis and precise construction controls are very significant for rational analysis and design and saving project cost. Elevation control is an important part of the time-dependent construction control in supertall structures. Since supertall structures have numerous floors, heavy loads, long construction times, demanding processes, and are typically located in the soft coastal soil areas, both the time-dependent features of superstructure and settlement are very obvious. By using the time-dependent coupling effect analysis method, this paper compares Shanghai Tower's vertical deformation calculation and elevation control scheme, considering foundation differential settlement. The results show that the foundation differential settlement cannot be ignored in vertical deformation calculations and elevation control for supertall structures. The impact of foundation differential settlement for elevation compensation and pre-adjustment length can be divided into direct and indirect effects. Meanwhile, in the engineering practice of elevation control for supertall structures, it is recommended to adopt the multi-level elevation control method with relative elevation control and design elevation control, without considering the overall settlement in the construction process.