• The Journal of Engineering Geology
• /
• v.8 no.3
• /
• pp.215-224
• /
• 1998

In this study, total strain was measured by LVDTs and local strains on the surface of specimens were measured by strain gauges. And axi-symmetrically elastoplastic FEM analyses was carried out for cylindrical specimens. Considering the influence of the restraint induced by the loading platen, in the case of H/D=1, the strain distribution on the side of a specimen is obviously affected by the condition of platen contact. Furthermore, it is clear that the larger H/D ratio becomes, the smaller the influence to the strain distribution is. For the smooth contact condition, the strain on the side is not influenced by the stiffness of the specimen, the shape and the scale effect, the strain distribution coincides with the nominal total strain. Whereas, in the case of rough contact condition, the strain distribution is remarkably affected. It is made clear that strain responses of hard rock specimens may more sensitive than these of soft rock specimens as a results of interaction between loading platens and specimen and the uniaxial strength of specimens may strongly depends on this interaction and stress-strain relation is affected by the contact condition.

• The Journal of the Korea Contents Association
• /
• v.13 no.10
• /
• pp.547-555
• /
• 2013

This study aims to examine association between festival service evaluation attribute and behavior intention of visitors and research satisfaction with festival, second visit and recommendation intention, ultimately in order to suggest measures to establish market strategies. The study was conducted as follows. First, a total of 360 pieces of questionnaire were distributed from October 14 to 16, 2011 and a total of 335 pieces were collected. Except 15 pieces without responses, 320 were used for the study. Second, in service evaluation elements, program, facility and performance review had positive impacts on the satisfaction and second visit. All evaluation elements also positively affected recommendation intention. Third, in association between demographic features and satisfaction, second visit and recommendation intention, while the satisfaction positively influenced bringing a friend, it negatively influenced academic background and income. In addition, residence and job gave a positive affect on second visit, while income, bringing family and first visit gave a negative effect on the second visit. Last, age, academic background, income and bringing family gave a negative effect on recommendation intention.

• The Journal of Korean Medicine
• /
• v.24 no.3
• /
• pp.1-10
• /
• 2003

Background : Asthma is a chronic inflammatory disorder under immunological influence. Gamichunggumgangwha-tang (CG, Jiaweiqingjinjianghuo-tang) and Gamiyukmigiwhang-tang (YM, Jiaweiliuweidihuang-tang) are herbal tonics for asthma from traditional herbal medicine. Objective : To evaluate the effect of CG and YM on immune cell & serum OA-specific IgE in broncho-alveolar lavage fluid (BALF) in a rat asthma model. Materials and Methods : Rats were sensitized with OA; at day I sensitized group and CG and YM groups were systemically immunized by subcutaneous injection of 1mg OA and 300mg of Al(OH)3 in a total volume of 2ml. At the same time, 1 ml of 0.9% saline containing $6{\times}10^9$ B. pertussis bacilli was injected by Lp. 14 days after the systemic immunization, rats received local immunization by inhaling 0.9% saline aerosol containing 2% (wt/vol) OA. A day after local immunization, BALF was collected from the rats. Rats were orally administered with each of CG and YM extract for 14 days since the day after local immunization. Lymphocyte, CD4＋ T cell and CD8＋ T cell counts, CD4＋/CD8＋ ratio in BALF, change of serum OA-specific IgE level, CD4＋ T cell and CD8＋ T cell percentages in the peripheral blood were measured and evaluated. Results : CG and YM showed an alleviating effect on asthmatic responses of rats. CG decreased total cell, lymphocyte, CD4＋ T cells in BALF, and serum OA-specific IgE level as compared with the control group. YM decreased lymphocytes as compared with the control group. CD4＋/CD8＋ ratio in BALF from the CG and YM groups and serum OA-specific IgE level from the YM group didn't show any significant variation from the control group. Conclusion : CG alleviated asthmatic hyperreactivity of the immune system through CD4＋ T cells and serum IgE. Further the study of this immune system modulating mechanism is expected.

• Journal of the Korea Society of Computer and Information
• /
• v.25 no.8
• /
• pp.137-144
• /
• 2020

In this paper, we propose the moderating effects of self-efficacy and social support on the relationship between physical therapists' job stress and psychological burnout. Based on the previous studies, this study set up three types of variables: 1) independent variable, 2) moderating variable, 3) dependent variable. Job stress was identified as an independent variable, self-efficacy and social support was identified as a moderating variable and psychological burnout was identified as a dependent variable. To empirically conduct this study, a total of 200 questionnaires were distributed to physical therapists. Consequently, a total of 155 survey responses were collected. The survey results are as follows. First, the result showed a high-level of correlation among job stress, psychological burnout, self-efficacy, and social support. Second, self-efficacy was found to have a moderating effect on the relationship between the physical therapists' job stress and psychological burnout. Third, social support was found to have a moderating effect on the relationship between the art therapists' job stress and psychological burnout.

• Journal of Sasang Constitutional Medicine
• /
• v.22 no.4
• /
• pp.77-84
• /
• 2010

1. Objectives Yanggyuksanhwa-tang for Soyangin was applied to investigate the immunological activities on antigen (Ag)-specific or Ag-non-specific immune responses on murine macrophage cell line (RAW 264.7) and ovalbumin/aluminium (OVA/Alum)-immunized mice. 2. Methods This study were carried out in nitric oxide (NO) synthesis on RAW 264.7 cells and cellular proliferation on mouse splenocytes. C57BL/6 mice were immunized intraperitonially with OVA/Alum (100 ${\mu}g$/200 ${\mu}g$) on day 1, 8, and 15. Yanggyuksanhwa-tang was administrated to mice orally for 3 weeks from day 1. On day 22, OVA-, lipopolysaccharide (LPS)-, and concanavalin A (Con A)-stimulated splenocyte proliferation and antibodies (OVA-specific antibodies of the IgG, IgG1, and total IgM classes) in plasma were measured. 3. Results Yanggyuksanhwa-tang significantly enhanced cellular proliferation by LPS and Con A on splenocytes from OVA/Alum-immunized mice (p<.001). Yanggyuksanhwa-tang also significantly enhanced plasma OVA-specific IgG (p<.001), IgG1 (p<.001), and total IgM (p<.01) levels compared with the OVA/Alum group. 4. Conclusions These results suggested that Yanggyuksanhwa-tang for Soyangin could be used as immunopotent.

• Korean journal of food and cookery science
• /
• v.25 no.6
• /
• pp.677-689
• /
• 2009

The purpose of this study was to evaluate food safety practices and knowledge of foodservice workers at senior welfare centers. A self-administrated questionnaire was administered to 1200 foodservice workers at senior welfare centers in Seoul, Incheon and Gyeonggi province. Two hundred five responses were returned, with 181 usable for analysis. Statistical analyses were conducted using SPSS for Windows(ver.14.0). Volunteers of respondents comprised 64.1% while chefs and employees comprised 20.9%. Food safety practices were assessed using a 5-point scale(1: strongly disagree - 5: strongly agree), and the average score of food safety practices was 4.27. For specific practices, 'personal hygiene (4.46)' scored the highest, followed by 'cleaning and sanitizing(4.43)', 'separate handing(4.40)', 'cooking process(4.11)', and 'receiving and storing(4.05)'. There were significant differences in the practice average score by age(p<0.01) and experience of food safety education(p<0.01). The total score for food safety knowledge was 14.43 out of 20 points. In the category of food knowledge, 'equipment and facility(80.5%)' had the highest correct answer rate, followed by 'personnel hygiene(75.9%)', 'cooking process(70.4%)', and 'cleaning sanitizing(65.8%)'. There were significant differences in the knowledge total score by job type(p<0.05), age(p<0.05), working experience(p<0.05), chef certification (p<0.01), and frequency of food safety education(p<0.01). The knowledge and practice scores were significantly correlated(p<0.01). This study suggests that food safety education for foodservice workers should be conducted continuously and repetitively, and the development of proper education materials is needed to improve the effectiveness of food safety education for chefs, employees and volunteers at senior welfare centers.

• Korean Journal of Construction Engineering and Management
• /
• v.13 no.5
• /
• pp.12-24
• /
• 2012

The Risks in undertaking a construction project comes from many sources and often involves many participants in the project. This study has identified various kinds of risks, assessed the risk factors quantitatively and suggested risk management method for response pertinent in Design Build(Turn Key)type of projects in Korean context. A questionnaire was designed comprising of 145 possible risks in all types of construction projects. The population from owner, consultant and contractor groups was asked to indicate the risks applicable in DB projects. 25 numbers of critical risks in DB projects were identified and further analyzed for reveling inherent relationship between them through factor analysis. Factor analysis revealed 8 risk factors in DB projects. Construction site related, contract related and design related risk factor consisted about 72% of total risk weight. It has been found out about 6%, while considering the mutual dependency, it is about 10% of total cost of DB project. Therefore, It is suggested that 6% to 10% of construction amount as contingency has to be made provision for risk responses in the DB projects.

• Journal of Korean Academy of Nursing
• /
• v.8 no.1
• /
• pp.85-98
• /
• 1978

This study was designed to investigate the elderly people's attitude toward death for the purpose of identifying the issues needed in the planning of health management and care activities for the aged. The total number of subjects in this study was 354 elderly people who were accommodated in house for elderly people (185) and school for elderly people (169). The scale for the attitude toward death of aged persons as an instrument of this study was mainly constructed with reference to Schneidman's attitude questioners toward death modified of adjust the Korean cultural characteristics and attitudes concerning death. Theresultsofthisstudywereasfollows: - 1. Out of total 45.8% of the respondents consider that death is a natural phenomena and ending of life. The responses on the meaning of death appeared differently : non-religions (48.1%) and oriental religions (50.3%) consider death as a natural phenomena however western religions (47.4%) consider that death is God's call. This difference was statistically significant. (x$^2$= 56.6419. df = 10. p<0.01). Respondents with a spouses (52.4%) think death is a natural phenomena opposed to respondent without spouses (33.3%). This was statistically significant. (x$^2$= 14.7134. df= 5 p<0.05). 2. Respondents in the house for aged persons (51.9%) replied. They do not wanted death because it meant a separation from their family as compared to those from school for aged persons (26.0%). 57.9% responded that they want to be told when death is confronted. 3. 51.2% of the respondents replied that the main factor to influence their attitude toward concept of death was the dying of their friends & relatives. 79.9% of respondents expressed that wished to die. The main reason for dying was economic shortage (28.3%). 4. 70.1% of the respondents want their body to be hurried while only 1.1% of the respondents want to donate their body to a medical research. 5. Over two thirds of the respondents replied that they do not believe in a life in heaven or that they will be rebirth. 6. The questioners of this study stimulated 56.8% of the respondents to feel that they should spend the leu of their life more effectively and 15.5% of the respondents felt it gave them the opportunity to think about their death seriously.

• Computational Structural Engineering
• /
• v.10 no.2
• /
• pp.233-242
• /
• 1997

The main purpose of this paper is to investigate the dynamic optimal design of continuous beams. The computer-aided optimization technique is used to obtain the near-optimal parameters of continuous beam. The computer program is developed to obtain the natural frequency parameters and the forced vibration responses to a transit point load for the continuous beam with variable support spacing, mass and stiffness. The model test data is in good agreement with the computer calculation, which serves to validate the mathematical analysis. The optimization function to describe the design efficiency is defined as a linear combination of four dimensionless span characteristics; the maximum dynamic stress; the stress difference between span segments; the rms deflection under the transit point load; and the total span mass. Studies of three span beams show that the beam with near-optimal parameters can improve design efficiency when compared to a uniform beam with even spacing of the same total span length.

• Journal of Preventive Medicine and Public Health
• /
• v.30 no.2 s.57
• /
• pp.251-266
• /
• 1997

In order to test scaling assumption, and to assess the validity, reliability, and acceptability of the Short form 36(SF-36) health survey questionnaire, we conducted a survey. Samples were 296 workers who had been employed in small sized companies. All scale passed for item internal consistency(100% sucess rate) and item discriminant validity(100% success .ate). Reliability coefficients were ranged from the lowest 0.51 to the highest of 0.85. For 87.5% of the total workers, inconsistent responses were not observed. Only 3.0% of the total workers failed two or more checks. Factor analysis was performed using principal axis factor method and quartimax rotation. In this survey, the SF-36 retained available psychometric properties even when used in a generally healthy worker group. But further study with some consideration to develope health status measurement is expected : first, the definition of health status should be rationalized. Second, the measurement of outcome is an important consideration in evaluations of quality of care. But ambiguities hinder understanding of this important topic. Third, internal consistency should be interpreted with caution as an indication reliability because it ignores potentially important sources of variation that can occur over time.