• The korean journal of orthodontics
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• v.37 no.1 s.120
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• pp.16-28
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• 2007

Objective: Evaluation of individual growth is important in orthodontics. The aim of this study was to develop a convenient software that can evaluate current growth status and predict further growth. Methods: Stature data of 2 to 20 year-old Koreans (4893 boys and 4987 girls) were extracted from a nationwide data. Age-sex-specific continuous functions describing percentile growth curves were constructed using natural cubic spline function (NCSF). Then, final stature prediction algorithm was developed and its validity was tested using longitudinal series of stature measurements on randomly selected 200 samples. Various accuracy measurements and analyses of errors between observed and predicted stature using NCSF growth curves were performed. Results: NCSF growth curves were shown to be excellent models in describing reference percentile stature growth curie over age. The prediction accuracy compared favorably with previous prediction models, even more accurate. The current prediction models gave more accurate results in girls than boys. Although the prediction accuracy was high, the error pattern of the validation data showed that in most cases, there were a lot of residuals with the same sign, suggestive of autocorrelation among them. Conclusion: More sophisticated growth prediction algorithm is warranted to enhance a more appropriate goodness of model fit for individual growth.

• Journal of dental hygiene science
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• v.16 no.6
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• pp.472-480
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• 2016

In this study, 110 adults aged 40 to 69 years were surveyed from April 28, 2016, to May 28, 2016 to analyze their periodontal status according to daily stress, coping methods, and oral health behavior. The collected data were analyzed using the t-test, one-way analysis of variance, and hierarchical multiple regression. Daily stress levels of all subjects were most frequent potential risk 64.5% of the subjects, the high risk 19.1% and 16.4% of the health group. Regarding stress coping methods, active methods recorded 2.46, passive methods recorded 2.32. Regarding oral health behaviors, subjects brushed an average of 2.45 times daily, for an average of 2 minutes. Futhermore, 69.1% of subjects brushed before bedtime and 89.1% practiced scaling. Regarding periodontal status, the O'Leary index was 73.45, gingivitis index was 1.30, an average of 2.83 quadrants possessed a periodontal pocket. The hierarchical multiple regression analysis identified, type of employment (${\beta}=-0.348$), scaling (${\beta}=-0.253$), and age (${\beta}=0.244$) as factors that influence the number of quadrants possessing a periodontal pocket. These results confirmed that the oral health behavior of scaling, but not stress levels of coping methods, strongly influenced periodontal status.

• The Journal of Korean society of community based occupational therapy
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• v.7 no.3
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• pp.43-58
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• 2017

Objectives : The Purpose of this study was to develop the occupation based grocery shopping skill training program for group of person with developmental disability and to test its effect. Methods : We set the grocery shopping task for the theme of the program and we applied this program for 9 sessions. There were initial, final, and follow-up evaluation and training sessions were provided 6 times. In the every session, group training program for grocery shopping skills was conducted. The performance of grocery shopping skills was evaluated by Test of Grocery Shopping Skills(TOGSS). Results : At the final assessment of grocery shopping skill, there were increased performance skills especially in item collection and size comparison. Among 3 subjects, two showed in improved navigation skills in order to search for target items. However, there was no improvement in comparing the optical price of items. For the last, it was significant that the total time to spend for shopping were commonly decreased. The performance of grocery shopping were maintained in 2 subjects and another subject was unable to perform it at the 5 month later follow-up evaluation. Conclusion : The occupation based grocery shopping skill training group program which was developed in this study is useful guide-line for occupational therapists who seek for the community based program. All 3 subjects showed the improved performance on shopping skill through this program.

• Culinary science and hospitality research
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• v.21 no.3
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• pp.155-167
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• 2015

This study aims to examine the knowledge level of culinary staff members regarding the restaurant country- oforigin labeling system by developing a scale to investigate and evaluate such knowledge levels. The empirical study targeted culinary staff members with over 7 years of experience in 10 luxury hotels in Seoul who were approached through the convenience sampling method, which was conducted for 14 days from November 14th to 27th, 2014. A total of 192 self-administered questionnaires were collected, of which 186 questionnaires(93%) were used for the final analysis. For investigation and analysis, a frequency analysis was carried out to look into population statistics and the level of knowledge using the SPSS 18.0 statistics program. One-way ANOVA and t-test were carried out to investigate differences in knowledge levels of restaurant country-of-origin labeling system with reference to academic background, job position, and hotel management type. As the result, the average correct answer rate of the culinary staff members for a total of 21 questions was 39.85% and there were no significant differences based on the academic background. However, the correct answer rate was higher for respondents that held high positions and had independently managed hotels, suggesting that knowledge varied depending on job position and management type. In conclusion, it is suggested that in order to improve the level of knowledge of the restaurant country-of-origin labeling system among culinary staff members there is a need to enhance training and continuous supervision to apply the knowledge to work in future. In addition to this, this study discussed the limits of the study and the orientation of further research.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.6
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• pp.243-253
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• 2016

Company strengthen various information security policy and activity in order to protect important information assets that the company has been dealing with and prevents information security accidents such as personal information spill. However, some study said these policy and activity increase employee's information security stress and still information security accidents by employees have happened so far. Therefore, this study will review preceding theories and studies used in many various fields including Information Security areas needed to explain human's behavioral intention and determinants and summarize characteristic factors that have influence on control of human's behavioral intention in the results of the above theories and studies. Secondly, this study will implement exploratory analysis on characteristic factors perceived by employees that has been stemmed from various company's information security policy and activity in order to increase employee/'s information security compliance intention under the its surrounding security circumstance. Thirdly, this study will fulfil multiple-regression analysis in order to identify cause-effect relationship between employee's perceived information security stress and employee's perceived characteristic factor. Finally, this study will explain casual relationship with same analysis methods between information security stress and information security compliance intention based on results of the survey conducted on the financial firm's employees with same analysis methods.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.6
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• pp.598-608
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• 2016

This study examined the relationships among patient safety competence, critical thinking disposition, problem-solving competence, and self-efficacy of clinical nurses to identify the factors influencing the patient safety competence. A convenience sample of 373 nurses working in 4 general hospitals in a Metropolitan area in Korea was selected. After obtaining IRB approval, data collection was done with a structured self-administered questionnaire from October 14th to November 4th, 2014. The data were analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation coefficient and multiple regression analysis using the SPSS WIN 21.0 program. The participants showed a moderate level of patient safety competence ($3.75{\pm}0.37$), of critical thinking disposition ($3.43{\pm}0.27$), of problem solving competence ($3.54{\pm}0.30$), and of self-efficacy ($3.58{\pm}0.47$). The patient safety competence of the participants showed a significant correlation with the critical thinking disposition (r=.493, p<.001), problem solving competence (r=.616, p<.001), and self-efficacy (r=.475, p<.001). The significant factors influencing the patient safety competence were problem solving competence (${\beta}=.403$, p<.001), self-efficacy (${\beta}=.156$, p=.005), critical thinking disposition (${\beta}=.130$, p=.018), and having the experience of reporting patient safety accidents (${\beta}=.137$, p=.002). The results suggest that educational programs to enhance the critical thinking disposition, problem-solving competence, and self-efficacy would develop the patient safety competence of clinical nurses. In addition, more effort should be placed into reinforcing the patient safety competence by activating the report of patient safety accidents.

• Journal of Preventive Medicine and Public Health
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• v.32 no.1
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• pp.60-64
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• 1999

Objectives. Changes in lung function are frequently used as biological markers to assess the health effects of criteria air pollutants. We tried to formulate the prediction models of pulmonary functions based on height, weight, age and gender, especially for children aged 12 years who are commonly selected for the study of health effects of the air pollution. Methods. The target pulmonary function parameters were forced vital capacity(FVC) and forced expiratory volume in one second(FEV1). Two hundreds and fifity-eight male and 301 female 12-year old children were included in the analysis after excluding unsatisfactory tests to the criteria recommended by American Thoracic Sosiety and excluding more or less than 20% predicted value by previous prediction equations. The weight prediction equation using height as a independent variable was calculated, and then the difference of observed weight and predicted weight (i.e. residual) was used as the independent variable of pulmonary function prediction equations with height. Results. The prediction equations of FVC and FEV1 for male are FVC(ml) = $50.84{\times}height(cm)+7.06{\times}weight$ residual 4838.86, FEV1(ml) = $43.57{\times}height(cm)+3.16{\times}weight$ residual - 4156.66, respectively. The prediction equations of FVC and FEV1 for female are FVC(ml) = $42.57{\times}height(cm)+12.50{\times}weight$ residual - 3862.39, FEV1(ml) = $36.29{\times}height(cm)+7.74{\times}weight$ residual - 3200.94, respectively.

• Journal of Dental Rehabilitation and Applied Science
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• v.33 no.2
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• pp.114-118
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• 2017

Purpose: The aim of this study was to investigate the effects of a titanium component for the zirconia abutment in the internal connection implant system on screw loosening under thermocycling conditions. Materials and Methods: Internal connection titanium abutments and external connection zirconia abutments with titanium sockets were connected respectively to screw-shaped internal connection type titanium implants with 30 Ncm tightening. These implant-screw-abutment assemblies were divided into two groups of five specimens each; titanium abutments as control and zirconia abutments with titanium sockets as experimental group. The specimens were subjected to 2,000 thermocycles in water baths at $5^{\circ}C$ and $55^{\circ}C$, with 60 seconds of immersion at each temperature. The removal torque values (RTVs) of the abutment screws of the specimen were measured before and after thermocycling. RTVs pre- and post-thermocycling were investigated in statistics. Results: There was not screw loosening identified by tactile and visual inspection in any of the specimens during or after thermocycling. The mean RTV difference for the control group and the experimental group were $-1.34{\pm}2.53Ncm$ and $-1.26{\pm}2.06Ncm$, respectively. Statistical analysis using an independent t-test revealed that no significant differences were found in the mean RTV difference of the groups (P > 0.05). Conclusion: Within the limitations of this in vitro study, the titanium socket for the zirconia abutment did not show a significant effect on screw loosening under thermal stress compared to the titanium abutment in the internal connection implant.

• The Journal of Korean Academy of Sensory Integration
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• v.13 no.1
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• pp.33-43
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• 2015

Objective : The purpose of this study is to investigate the effect of parent education program with sensory integration approach on the parent's understanding of sensory processing ability of their own children with developmental delays. Methods : The period of this study is from March 15, 2015 to May 10, 2015. The participants of this study were thirty of parents who have children with developmental delays. The participants were randomly divided as experimental group (15 parents) and control group (15 parents) and an educational program was provided to those parents in the experimental group. The education program was developed based on sensory integration approach and 1:1 intensive individual counseling education. Short Sensory Profile (SSP) & a specially designed questionnaire were used to evaluate the parent's understanding of sensory processing ability of their children with developmental delays. The effect of between the groups was analyzed using an independent two samples t-test, and the effect of the intervention within a group was measured using the paired t-test. Results : After the intervention of parent education program, the total score of SSP was significantly decreased and the score of the parent questionnaire was significantly increased (p<.05). Conclusion : The results of this study show that parent education program with sensory integration approach is effective to improve the parent's understanding of sensory processing ability of their children with developmental delays. This study can be used as a good resource for therapists who is planning to provide sensory integration treatment for children with disabilities.

• Journal of Korean Society of Forest Science
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• v.102 no.4
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• pp.506-514
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• 2013

This study examined the feasibility on the construction of a wood industrialization service center for a wood industry cluster establishment in Jeollanam-do. Construction of the wood industrialization service center is based on a discount rate of 3.5%, an investment period of 4 years, a business operations period of 16 years and an investment cost of 24600 million won; the total amount of the net present value, the cost-benefit ratio and the internal rate of return were assumed to be 2.579 million won, 2.51%, and 10.1%, respectively. In addition, the production inducement coefficient, the induced production effect, the income-induced coefficient, the income inducement effect, the employment inducement coefficient, and the employment inducement effect were estimated 1.4345, 35287 million won, 0.1655, 4000.7 million won, and 0.4665, 1,145 people, in the effects of the wood related industries using the multi-regional input-output model, respectively. Financial independence of operating income to cover its own costs incurred in accordance with the operating project might be practicable.