• Journal of the Korean Society of Marine Environment & Safety
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• v.22 no.4
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• pp.311-318
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• 2016

The VTS concept was located as a principal methods of maritime safety administration in world's major harbors and expected to become the pivotal role for the future of the maritime and harbor society with e-Navigation epoch. If recent limelight concept of big-data has been included in aspect of information gathering and analysis with various studies, it's required advanced studies to improve the information analysis capability and application range of the data that can be mining by the VTS. In this study, contrast to other studies that aimed quantitative analysis as communication number, it can be mining the time information and each of the communication VTS for the target vessel, including qualitative analysis, such as the purpose or the type of communication. This comparison across multiple items of the collected information, and presenting the VTS data mining model (VCDF) that can be analyzed for the purpose of analyzing way, type and number of communication by ship's type, also number of violations through VTS communication. First, In Busan port case, it shows frequently information service and shows frequently communicating with particular types of vessels. Second, Passive VTS carried out notwithstanding many kinds of traffic violations due to communication congestion. This arranged information can be used as data for the analysis, as possible the level of traffic for VTSO situational awareness, which pointed to the 'workloads' in 'IALA Guideline' and could be used as a database for future research of e-Navigation.

• The Journal of the Korea Contents Association
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• v.18 no.8
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• pp.51-61
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• 2018

This study was conducted to propose regional policy for reducing suicide rate by confirming the change of local suicide rate for 10 years from 2005 to 2015 and the effect of change of local environmental factors influencing the change. The main results are as follows. First, the change of city, county, and province suicide rate in 10 years showed that the suicide rate decreased in order of military district, city area, and district. Second, in the case of economic factors, local suicide rate decreased as the local tax burden per capita increased, and as the financial self - reliance increased. Third, in the case of the social integration factors, the local suicide rate decreased as the ratio of the basic livelihood recipient decreased. In addition, local suicide rate decreased as the number of elderly leisure welfare facilities increased. Fourth, in the case of the social demolition factor, the region where the divorce rate is increased, the depression experience rate is increased, and the region where the rate of one person is increasing, the local suicide rate is increased. Therefore, it is expected that the local suicide rate can be reduced through efforts to improve the economic capacity of the whole region, social integration and reduction of the social disintegration phenomenon in the region.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.7
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• pp.3074-3084
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• 2012

The purpose of this study lies in examining how sling lumbar stabilization exercise affects static standing balance of adolescent idiopathic scoliosis patients. The subjects were forty patients who were diagnosed with idiopathic scoliosis. They were randomly assigned either to a experimental group (n=20) that received sling lmubar stabilization exercise program or to a control group (n=20) that received only education. Data were obtained for each patient from total sway path and sway velocity in standing on both feet with eyes closed and standing on both feet with eyes open were measured, using balance performance monitor. All variables were measured at pre- and post-exercise. There were significantly differences between the both groups for all variables at post-exercise (p<.05). The experimental group showed a significantly decreases in all variables at pre- and post-exercise (p<.05). But the control group showed a no significantly differences. These results revealed that sling lumbar stabilization exercise improved static standing balance, by reducing COP(center of pressure) sway path and sway velocity of idiopathic scoliosis patients, and it is expected that sling lumbar stabilization exercise will be used as balance enhancement exercise intervention for the treatment of adolescent idiopathic scoliosis patients.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.11
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• pp.6728-6738
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• 2014

This study investigated the relationship among pain, depression and activities of daily living in nursing home residents. Data was collected through a structured questionnaire survey of residents at 4 nursing homes in S city. The measures were the Numeric Rating Scale (NRS) and Discomfort Scale-Dementia of the Alzheimer Type (DS-DAT) for self-reported and observational pain, Geriatric Depression Scale Short Form-Korea Version (GDSSF-K) for depression, Barthel Activities of Daily Living (BADL) scale for ADL. The data were analyzed using the Pearson's correlation coefficient and hierarchical multiple regression using the SPSS/PC 20.0 program. The analysis results of the relationship of pain, depression and activities of daily living, both DS-DAT and NRS showed a significant negative correlation with the activities of daily living and a positive correlation with depression. Finally, gender, arthritis, depression, and activities of daily living explained 28.1% of the variance in pain using NRS, whereas depression and activities of daily living explained 21.5% of the variance in pain using DS-DAT. The results highlight the need to develop a pain management program that reduces the depression and promotes the activities of daily living in nursing home residents; hence, a differentiated approach as non-pharmacological interventions is required.

• Journal of the Korea Organic Resources Recycling Association
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• v.28 no.1
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• pp.73-82
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• 2020

This study was conducted to investigate the differences in carbon storage capacity of soil between the conventional and the organic agricultural cultivation followed by the assessment of their economic values. An analysis of 107 samples in the organic and the conventional rice cultivation soils in six regions across South Korea showed that the five regions, Buyeo-II, Gimhae, Sancheong-I, II and Suncheon, had higher organic soil carbon contents than those of values observed on the conventional soils with the exception of the Buyeo-I areas. Based on the results from soil carbon contents, the carbon storage were estimated to be 36.1 megagram carbon (MgC) per ha in the organic paddy soils, while its conventional paddy soils were 29.4 MgC per ha. It showed that the organic paddy soils were 23 % greater than that of its conventional paddy soils. It was estimated that the carbon trading price for economic assessment was ￦758,100 per ha in the organic paddy soil and ￦617,400 per ha in the conventional paddy soil.

• Journal of Astronomy and Space Sciences
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• v.22 no.1
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• pp.13-20
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• 2005

Bound abrasive grinding is used for the initial fabrication phase of the precision aspheric mirrors for both space and ground based astronomical telescopes. We developed a new grinding optimization process that determines the input grinding variables for the target surface roughness, checks the grinding error magnitude in resulting surface roughnesses, and minimizes the required machining time. Using the machining data collected from the previous grinding runs and subsequently fed into the multivariable regression engine, the process has the evolving controllability that suggests the optimum set of grinding variables for each target surface roughness. The process model was then used for ten grinding experiments that resulted in the grinding accuracy of $=-0.906{\pm}3.38(\sigma)\;nm(Ra)$ for the target surface roughnesses of Zerodur substrate ranging from 96.1 nm (Ra) to 65.0 nm (Ra) The results imply that the quantitative process optimization technique developed in this study minimizes the machining time and offers the nanometric surface roughness controllability superior to the traditional, qualitative, craftsman based grinding process for the astronomical optical surfaces.

• Journal of Digital Convergence
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• v.12 no.12
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• pp.581-588
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• 2014

The purpose of this study aims guarana ingestion to possibly be Ergogenic Aids(EA) for elite male athletes who do long time exercises. Participators who play long distance belong to H-university. They are measured HRmax by polar and treadmill, and they do run on the treadmill for 60 minutes with HRmax 70%. Participators ingest 200ml guarana and water for 5 times. They were drawn blood for 3 time such as before 30 minutes, after finish, and after 30 minutes later. Data processing was repeated of the measuring, two way repeated ANOVA, according to guarana ingestion, water ingestion, and treatment time. The result of this study identifies that guarana ingestion is more positive effect with glucose, Free fatty acid, and lactic acid than water. Hence, guarana ingestion is including function of EA to increase reserving energy on the body for rising kinetic ability.

• Clean Technology
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• v.17 no.2
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• pp.117-123
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• 2011

In this study, evaluation tests for cleaning performance of various cleaning agents and selection of optimal ultrasonic cleaning parameters were executed to develop an efficient cleaning process in remanufacturing of laser copy machine. Cleaning performance tests were executed with 8 cleaning agents (A~H) to remove the contaminants of oil-ink, toner particles, and shoe polish. Physical properties and foamability tests were also applied. For 3 types of contaminants, cleaning agent G showed superior cleaning performance compared to agent A which has being used at a remanufacturing of laser copy machine in Korea. With cleaning agents selected in pre-tests, ultrasonic cleaning tests were executed to remove real contaminants on the parts of used digital laser copy machine parts. Cleaning agent G at 28 kHz ultrasonic frequency showed faster cleaning performance compared to agent A and other frequencies. The productivity and economic efficiency in remanufacturing of laser copy machine are expected to increase by adapting agent G and 28 kHz frequency at ultrasonic cleaning process.

• Journal of Agricultural Extension & Community Development
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• v.21 no.4
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• pp.1149-1189
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• 2014

Nowadays, many farmers use online management diagnosis tool developed by Rural development agency(RDA) for the purpose of self-diagnosis of their farm management. Database(DB) was created using the diagnosis results and has been used for agri-firm management consulting. However, the amount of diagnosis data in the DB has been decreasing year by year. This means that the diagnosis tool of RDA did not reach farmers' expectation. Therefore it is necessary to develop a practical consulting tool which is applicable for various types of agri-firm management. This study introduces a management diagnosis tool and consulting method based on multi-contingency organization theory and value chain model for the purpose of improving existing tools and methods. The consulting method based on multi-contingency organization theory shows the core strategy of agri-firms by two different ways such as "efficiency-oriented" direction and "effectiveness-orientated" direction. Also, this method emphasizes that the performance of firm can be achieved when subelements of firm activities follow the same direction with the orientation of core strategy. The important thing is the right firm management activity fitted to its strategic direction. Through this action, limited firm resources can be optimized. In order to make itself understand, this study shows a practical example applied by this method from actual agri-firms.

• Journal of The Korean Association For Science Education
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• v.20 no.2
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• pp.234-243
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• 2000

This study investigated the relationships between verbal behaviors and chemistry problem solving ability in cooperative learning. Based on the previous chemistry achievement. 11th-graders were assigned heterogeneously into three-membered groups. Small cooperative group problem solving processes in using 4 stage-problem solving strategy were audio/video taped. Students' chemistry problem solving ability was then measured by a problem solving strategy performance test. Their verbal behaviors were classified into giving information, receiving information, asking questions, and disagreeing. These were further coded into 16 subcategories. Providing, a subcategory of giving information, was the most frequent behavior. In studying partial correlation between verbal behaviors and problem solving ability, 7 categories were found to have significantly positive relationships. Providing showed the highest correlation with the problem solving ability as reported previously. Moreover, this study also revealed significant correlations in the categories of clarifying provided, correcting, justifying, and clarifying. In the case of low-ability students, the verbal behaviors of giving or receiving information were strongly correlated with problem solving ability. However, these verbal behaviors did not enhance the problem solving ability of high- and medium-ability students.