• Journal of Navigation and Port Research
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• v.48 no.5
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• pp.360-367
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• 2024

Marine accidents often stem from near-miss incidents, which are critical indicators of potential collisions. Understanding the causal factors associated with these incidents is essential for enhancing maritime safety. This study employs the PARK model to identify causal factors related to maritime accidents, with a focus on near-miss incidents in Busan Port. By analyzing AIS data from 2017 to 2021, the research identifies 36 collision incidents. The PARK model assesses risk levels, setting a threshold of 5.0 for near-miss scenarios and examines the relationship between these incidents and actual collisions. The analysis indicates an average of 0.8 collisions per year, with the PARK model estimating a probability of approximately 2.34 collisions annually per million vessel encounters at a risk score of 5.0. This research highlights the effectiveness of the PARK model in identifying causal factors related to marine accidents. By correlating near-miss incidents with actual collision probabilities, the study offers insights that can improve reporting practices and proactive safety measures among vessel operators, ultimately contributing to enhanced maritime safety in South Korea.

• Journal of Korean Society of Forest Science
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• v.105 no.3
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• pp.377-390
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• 2016

The aim of this study is 1) to design an auction-type and area-based payments for ecosystem services (PES) in application to private forest in Korea, 2) to develop the framework of index to implement the PES program proposed, and 3) to examine the feasibility and validity of the index framework by conducting a case study. The index framework measures quantities of ecosystem services currently supplied, improvement of ecosystem services anticipated from the proposed management activities, and real implementing costs of the program. The total scores from the case study vary from 301 to 501 for site 1, Goesan-gun and 273 to 460 for site 2, Pyeongchang-gun, respectively, indicating that total index score - measurement of cost-effectiveness - can be varied by the levels of management and real cost even if the scores from ecosystem service indicator group are the same. The index framework which can locate a cost-effective program has significant policy implication given the budget constraints in biodiversity/ecosystem services policy arena.

• Journal of Korea Port Economic Association
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• v.24 no.2
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• pp.209-239
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• 2008

The purpose of this paper is to investigate the effectiveness of Korean port investment by using the newly developed slack-based multi-year panel congestion model of DEA(Data Envelopment Analysis). Inputs[port investment amount, cargo handling capacity, and berthing capacity], and outputs[cargo handling amount, number of ship calls, revenue, and score of customer service satisfaction] are used during 1994-2004 for 20 Korean seaports. Empirical analysis identified congestion especially in port investment as input at the ports of Gunsan, and Busan in the all 3 models, and the ports of Pyungtag, Mogpo, Yeosu, and leju in over 2 models. Port investment induced the rapid increase of port efficiency from the ports of Masan, Incheon, Donghae, and Samcheok. Therefore other ports except these ports should examine the reason about the inefficiency of port investment by searching out the situation of each ports directly. The main policy implication based on the findings of this study is that The Ministry of Land, Transport and Maritime Affairs in Korea should introduce the new measurement way after reviewing the multi-year slack-based congestion approach when the amount of port investment for each port is decided.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.11
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• pp.239-251
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• 2017

This study attempted to identify the health behaviors and related factors of lifestyle related diseases among some public officials. The study subjects were 729 administrative officers of the general public office of the government in D metropolitan city. The data collection was conducted by self-administered questionnaire from February 1 to March 31, 2016. As a result, the health behavior score for lifestyle related diseases showed a significant positive correlation with vulnerability, the effectiveness of health behavior and information obtained from the media about lifestyle-related diseases, while it showed a significant negative correlation with the barriers to health behaviors concerning lifestyle related diseases. As a result of the covariance structure analysis, vulnerability and seriousness about lifestyle related diseases were the most important factors affecting health behavior for lifestyle related diseases. The next most important factors were a family history of lifestyle related diseases, information obtained from the media, effectiveness of and barriers to health behavior, instrumental support, and emotional support. These results suggest that each factor constituting the Health Belief Model (HBM) (perceived vulnerability and seriousness about lifestyle related diseases, perceived effectiveness and barriers to health behaviors, family history of lifestyle related diseases, information obtained from the mass media about lifestyle related diseases, social support network for lifestyle related diseases) is an important factor to consider in practicing health behaviors for lifestyle related diseases. Therefore, it is important to accurately understand the factors related to the practice of the health behaviors of the subjects and to manage them continuously.

• Korean Journal of Social Welfare
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• v.56 no.2
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• pp.285-310
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• 2004

The major purpose of this study is to examine effectiveness of an intervention program which aims at education/training caregivers of the dementia and/or stroke elderly. This program was conducted at group level. Participants of this program were the primary caregivers who have taken care of the elderly with dementia and/or stroke. To test the effectiveness of the caregiver education/training program, this study employed an quasi-experimental design: to compare pretest score with posttest ones for the same participants. Total forty two primary caregivers have completed the program. Seventeen caregivers were in experimental group, whereas twenty five ones belonged to control group. Our data suggest that, for the primary caregivers, subjective quality of life was more important than cargiving burden. Subjective quality of life among the caregivers significantly improved, after completing the program. This result suggests that a short-term intervention program at group level is not effective to reduce caregiving burden because an infra structure of community resources, to which the caregivers and their family access, did not remain at sufficient level. However, participants have showed improved mutual solidarity, and they have exposed to wider spectrum of a variety of information. As a result, they have perceived that the level of subjective quality of life has positively changed. Additional factors have influenced on determining the quality of life among the caregivers. The caregivers, whose demented elderly showed lower level of ADL and IADL, or who have experienced the short period of caregiving, were more likely to belong to higher level of quality of life. The quality of life among the caregivers were even more improved in the following group: being young, and highly educated, man. One of the contributions from this study is that we have found caregiver's characteristics, which need an intervention most. In addition, our study implies that specific contents of the caregivers' education/training program should be conducted based on each family's unique characteristics.

• Journal of the Korean Society of School Health
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• v.8 no.1
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• pp.143-154
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• 1995

Korea has been recently reducing the quality of life as well as rising medical cost because of the increase of chronic diseases. But we can prevent those chronic diseases through the improvement of environment or life style. We evaluated the educational effectiveness of chronic diseases(hypertention, diabetes, cancer, stroke and other chronic diseases) designed to increase the knowledge, attitude and practice of chronic diseases among university students. Between August 1994 and November 1994, we implemented chronic diseases prevention instruction in intervention students; unmatched control students were selected in same university. We conducted pre- and post-intervention surveys both intervention and control students with self-reported questionnaires(50 items). We assigned score(0-4 points) to items and conducted a analysis of covariance(ANCOVA) with sex, grade and economic status as the covariate, using the SAS PC computer statistical package. And we culculated odds ratio with safety scores between intervention and control students. The results of this study were followed. 1. In demographic characteristics of subjects both pre- and post intervention, we found no significant differences in intervention and control students at religion, father's education, mother's education, mother's occupation and type of residence(p>0.05), but we found significant differences at sex(p<0.001), grade(p<0.001) and economic status(p<0.05). 2. The sex, grade and economic status-adjusted mean prevention knowledge scores for diabetes and stroke increased from the pre- to post-survey in the intervention students(p<0.001), but control students did not increased(p>0.05). As odds ratios in knowledge were below 1, the knowledge of intervention students were higher than control students. 3. The attitudes for general adult health increased from the pre- to post-survey in the intervention students(p<0.05), but control students did not increased(p>0.05). As odds ratios in attitudes were approximately 1, we can not say effectiveness in intervention students 4. The pratices for cancer and stroke increased from the pre- to post-survey in both the intervention and control students(p<0.001). Also odds ratio of hypertention was 0.91, and that of stroke was 1.14. 5. Health related behaviors did not increased from the pre- to post- survey in both the intervention and control students(p>0.05). But odds ratio of drinking was 0.76 and that of body weight was 1.21. 6. Health status did not increased from the pre- to post- survey in both the intervention and control students(p>0.05). As odds ratio of health status was 1.09, prevention education was not effect in intervention students We would like to recommend as follows; 1. University students must learn about prevention of chronic diseases. Because the knowledge of invetervention students was higher than that of control students. 2. The prevention education of chronic diseases should be taught from primary school. 3. Adult health education for university students must be practiced continuously. Education period(l5 weeks) in this study was not complete. 4. The evaluation of chronic diseases was conducted real measurement(such as BP check) as well as self reported-survey. 5. Educational materials(video tape, pamphlet) related the prevention of chronic diseases should be developed at national level. And we must easely use those materials. 6. The prevention education of chronic diseases should be made through mass media as well as school education.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.32 no.4
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• pp.13-28
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• 2019

Objectives : The purpose of this study is to report the effectiveness of Korean medical treatment on 222 patients with alopecia areata. Methods : The subjects of this study were 222 patients who had received Korean medical treatment among the patients who visited the Balmer's Korean Medicine Clinic from January 1, 2016 to December 31, 2017. The extent of the alopecia areata was measured every month to determine the improvement. We analyzed the relationship between the types of alopecia areata, the extent of hair loss, duration of illness, age at first visit, and the treatment of alopecia areata. Results : 1. There were 100 males(45.0%) and 122 females(55.0%). The mean age of patients was 35.3 years old. 2. Of the 222 patients, 142(64%) were "cured". 31(14%) showed "good", 21(9.5%) showed "fair", 28(12.6%) showed "poor" improvement. 3. According to clinical records, of the 64 patients with alopecia areata(AA), 48(75.0%) were cured. Of the 100 patients with alopecia areata multiplex(AAM), 68 patients (68.0%), 12(50.0%) out of 24 patients with ophiasis, 5(55.6%) out of 9 with alopecia semi-totalis(AST), 3(50.0%) out of 6 patients with alopecia totalis(AT), 6(31.6%) out of 19 patients with alopecia universalis(AU) were cured. 4. Patients with the wider hair loss extent and with more severe type of alopecia areata required longer treatment period to cure, and the cure rate was lowered(p<0.05). 5. The shorter duration of the disease was related to the higher cure rate(p<0.05). If the treatment was started after six months of the duration, the cure rate was lowered. Therefore, beginning treatment within six months of the onset is recommended. 6. The period until terminal hair showed was 1.5 months for AA, 1.7 months for AAM, 1.6 months for ophiasis, 1.9 months for AST, 2.3 months for AT, 3.2 months for AU. 7. The treatment period to cure was 4.9 months for AA, 7.3 months for AAM, 7.7 months for ophiasis, 6.8 months for AST, 7.7 months for AT, 16.3 months for AU. 8. The major prognostic factors were extent and type of alopecia, duration of the disease and relapse. Conclusions : We analyzed the effectiveness of Korean medical treatment through cure rate according to the prognostic factors. This study will provide useful data for the treatment of alopecia areata.

• Korean Journal of Environmental Agriculture
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• v.40 no.3
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• pp.169-178
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• 2021

BACKGROUND: The Ministry of Agriculture, Food and Rural Affairs is promoting agri-environment conservation program to induce farmers to participate in agricultural environment improvement and conservation activities. However, assessment tools based on scientific evidence are needed to determine the effectiveness of the program objectively and quantitatively. Therefore, this study was performed to develop plant indicators in order to efficiently evaluate the effects of the agri-environment conservation program promoted by the Ministry of Agriculture, Food and Rural Affairs. METHODS AND RESULTS: The survey was conducted in five regions (Hampyeong, Boryeong, Mungyeong, Hongseong, and Sangju) participating in the agri-eonvironment conservation program. In each region, twenty paddy fields were investigated (ten paddy fields included in the program and ten paddy fields not included in the program). A total of 231 taxa vascular plants were identified in the paddy fields that were included in the agri-environment conservation program, and a total of 177 taxa were identified in the paddy fields that were not included. The average species number occurred on each field was 55.8 taxa in the fields included in the program, and 35.0 taxa in the fields not included in the program. The difference in occurring plants between two groups was found to be more higher in perennial plants than in annual plants. We selected the six groups as indicator plants through five criteria such as perennial plants and broadly occurring species, etc. to verify the effectiveness of the agri-environment conservation program: Taraxacum spp., Ixeris spp., Viola spp., Platago spp., Calystegia spp., and rare and endagered species. There was a high positive correlation between the score calculated using these indicator plants and the total number of plants species. CONCLUSION: This study suggests that it is possible to evaluate the agro-ecological environment by using indicator plants. The selected indicator plants can be effectively used to verify the effectiveness of projects such as agri-environmental conservation programs in the future.

• Journal of the Korean Society for Library and Information Science
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• v.56 no.2
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• pp.179-207
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• 2022

This study was performed in order to find implications for further activating the reading discussion program by conducting a Havruta-based reading discussion program for elementary school students in the library, by measuring and analyzing the effect on the participants. The results of the study are as follows: First, as a result of comparative analysis between the pre- and post-scores on the effectiveness of the Havruta reading discussion program, it was found that the average score of the post-test was high. Second, as a result of analyzing the differences in the changes in the results of the pre-survey compared to the post-survey according to the general characteristics of the participants, it was found that there were significant differences in the characteristics of 'interest in reading' for the 'critical thinking ability' factor, the characteristics of 'average monthly reading capacity' for the 'critical thinking ability' factor, the characteristics of 'academic performance' for the 'research ability' factor, and the characteristics of 'gender', 'academic performance', and 'interest in reading' for the 'persuasive ability' factor. Third, as a result of analyzing how the effects of the Havruta reading discussion program are affected by the constituent factors of reading and discussion ability, it was found that the factors 'critical reading ability' and 'critical thinking ability' had an effect. As a result, it was identified that there are effects and advantages of the Havruta-based reading discussion program in the library.

• Herbal Formula Science
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• v.30 no.2
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• pp.95-100
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• 2022

Objectives : Recent studies reported that Dokwhalkisaeng-tang (DHJST) could relieve the clinical rheumatoid arthritis (RA) symptoms and the level of RA-related blood test. However, evidence-based review on effectiveness and safety of DHJST with medication on RA was not yet provided. Methods : Searching randomized controlled trials on the use of DHJST for RA will be performed using multiple electronic databases, manual search, and contact to author. Studies will be selected according to the pre-defined criteria and collected data on study participants, interventions, control groups, outcome measurements, the results, adverse events, and risk of bias will be summarized. Primary outcome will be the disease activity score (including effective rate, swollen joint count, tender joint count, and morning stiffness), and the secondary outcomes will be RA-related blood test and adverse events. We will use Review Manager software to perform a meta-analysis, Cochrane Collaboration "risk of bias" tool for assessing the risk of bias, and Grades of Recommendation, Assessment, Development and Evaluation for the determination of quality of evidence. Results : We are going to investigate the effectiveness and safety of DHJST with medication for RA. Conclusion : This study will provide reliable evidence on whether DHJST combined with medicine is more effective on RA than medicine monotherapy.