• Applied Chemistry for Engineering
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• v.10 no.8
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• pp.1155-1160
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• 1999

The screening methodology modeling, dispersion modeling procedures for continuous and instantaneous releases of the gas phase flow from the storage tank and pressure relief valve were considered. This study was performed to develop the screening methodology for prediction and control of hazardous/toxic gas releases by estimating the 1-hr average maximum ground-level concentration of $Cl_2$ gas vs. downwind distance by incorporating source term model including the general/physical properties of released material and release mode of the $Cl_2$ storage tank of the chemical plant facilities, dispersion model, and meteorological/topographical data into the TSCREEN model. As the results of the study, it was found that dispersion modes of the dense gas were affected by the state of the released material, the released conditions, physical-chemical properties of released material, and the released modes (continuous and instantaneous releases), and especially largely affected by initial (depressurized) density of the released material and release emission rate as well as the wind velocity. Especially, this study was considered to release hazardous material as meteorological data. It was thought that this screening methodology can be useful as a preliminary guideline for application of the refined analysis model by developing the generic sliding scale methodology for various senarios selected.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.4
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• pp.160-171
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• 2016

The purpose of this study is to understand the way university students appreciate the meaning of life. The subjects were 1, 2, 3, and 4 grade students from four universities located in Gyeonggido and Gangwondo Provinces; This study was a descriptive research project conducted from March to June 2015 for the purpose of understanding how university students appreciate the meaning of life. The data, gathered from interviews with a number of university students, who are at the last stage of adolescence, were classified into 102 statements and 30 categories through a series of content analyses of certain subjects, such as the definition and importance of the meaning of life, the endeavor to make life meaningful, the moments they feel the meaning of life, and the methods they adopt to feel the meaning of life. We analyzed the ways in which university students appreciate the meaning of life. We hope this study will provide a small guide for them so that the meaning of their lives can be enriched and their feeling of well-being enhanced. In addition, it is necessary to develop appropriate measures for college students to deal with crises in their life and, thus, the results of this study could be used as an important material for the systematic development of support programs for college students. Finally, this study will provide the basis for multifaceted interventions designed to improve the physical and mental health of college students and help them to adapt to college life.

• The Journal of the Korea Contents Association
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• v.12 no.9
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• pp.396-407
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• 2012

The Purpose of this study was to examined the relation between Belief and Actual Practice of Instructor according to education in Taekwondo Personality. To get the purpose participants was selected 286 Taekwondo instructors. Selected data were analyzed for descriptive statistic, pearson relation analysis, and multi dimensional analysis with SPSS/PC 18.0. The result was as followed. First, there were different on frequency of important factors between belief and practice of Taekwondo personality based on Taekwondo instructor's cognitive. The order of ethological important factors on Taekwondo instructor's cognitive were manner, confidence, love, perseverance, bravery. But The order of ethological important factors on Taekwondo instructor's practice were manner, confidence, perseverance, leadership, honestly. Second, belief of Taekwondo personality based on Taekwondo instructor's cognitive has positive relationship with practice of Taekwondo personality in a part. There were positive relationship among factors of belief of Taekwondo personality but were lower positive relationship among factors of practice of Taekwondo personality. Taekwondo instructors' determination on teaching belief has positive effect on guidance factor, practical factor, variety factor, if the teaching belief has higher score then the teaching practice has higher practical teaching.

• Journal of Digital Convergence
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• v.14 no.3
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• pp.489-497
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• 2016

The purpose of this study is to examine the effect of milk protein intake and band exercise on active fitness and metabolism risk factor of elderly women for 8 weeks. The two groups were classified into one group(TG) with milk protein intake and band exercise both, and the other group(CG) that was controled. The group of TG was applied doing milk protein intake 3 times for a day, and doing band exercise 4 times for 60 minutes a week. The intensity of the exercise was RPE<17. Each measurement variable was measured before and after 8 weeks to investigate the effect. This study got the result with this step. First, TG has shown small interaction with active fitness. Second, TG has shown small interaction with metabolism risk factor. Therefore, this study gives us the positive result of the effect of milk protein intake and band exercise on active fitness and metabolism risk factor of elderly women for 8 weeks. However, it has limitation to verify effect of milk protein intake and band exercise.

• Clean Technology
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• v.14 no.2
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• pp.95-102
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• 2008

In order to choose alternative environmental-friendly cleaning agents, it is very important in the present point that the systematic selection procedures should be introduced and applied to the industry through the evaluation of their cleaning ability, environmental characteristics, and economical factors, and that the objective and effective evaluation methods of cleanliness should be established for the industry. Thus, a novel cleaning evaluation method utilizing optically stimulated electron emission (OSEE) among various methods of cleaning ability was studied in this study. The contaminants used in this cleaning experiments were flux, solder, grease, cutting oil, and mixed soil of 35% grease and 65% cutting oil. The cleaning agents developed or prepared in our laboratory were employed and their cleaning ability were comparatively evaluated by the OSEE, gravimetry and contact angle methods. The experimental results in this work showed that flux cleaning efficiency measured by the OSEE method was similar to that of the gravimetric method, but that the OSEE method could not be compared with gravimetric method for the case of solder or grease cleaning because the contaminants radiate or absorb ultra-violet light. In case of cutting oil cleaning, the gravimetric method indicated its limitation of cleaning efficiency of cutting oil since it showed cleaning efficiency of 100%, even though residual soil remaining on the substrate surface a little after its cleaning. The comparative experimental results of cleaning ability evaluated by the OSEE- and contact angle measurement methods showed that they were similar in case of cleaning of flux, mixed soil and cutting oil. It was judged that the contact angle measurement method could evaluate the cleaning ability more precisely than the OSEE method for cleaning solder and grease.

• Korean Security Journal
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• no.15
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• pp.337-358
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• 2008

With the Japanese attacks on Pearl Harbor in 1941, approximately 2,500 people were killed. The terrorist attack on World Trade Center in the United States resulted in the heavy loss of people's lives, 2,749 in all. The 9.11 demonstrated that terrorist attack could be more serious problem than the war in our modern life. In addition, terrorist armed with new and high technologies have become more dangerous elements to the international community. Especially, the fact that the weapons of mass destruction are used by terrorist organizations is a matter of great concern. The strength of terrorist arsenal gives terrorist a decided advantage over us. The chances of success for terrorist have been increased due to the terrorist friendly environments. Terrorism has evolved without stopping from its birth, which is imposing a great burden on the authorities concerned. The counter-terrorism strategy and tactics used in the past have been useless in the fighting against new terrorism. To cope with the fast changing terrorism, comprehensive countermeasures should be developed. The purpose of this study is to know the enemy. To achieve the goal, the current situation on international terrorism as a whole is examined. Based on the result of the research, this paper also tried to give a perspectives on the future terrorism. At the same time, it provides a guidelines of the direction in the fighting against terrorism.

• Journal of Gifted/Talented Education
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• v.26 no.1
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• pp.211-230
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• 2016

The study aimed to investigate the characteristics of algebraic thinking of the mathematically gifted students and search for how to teach algebraic thinking. Research subjects in this study included 93 students who applied for a science gifted education center affiliated with a university in 2015 and previously experienced gifted education. Students' responses on an algebraic item of a creative thinking test in mathematics, which was given as screening process for admission were collected as data. A framework of algebraic thinking factors were extracted from literature review and utilized for data analysis. It was found that students showed difficulty in quantitative reasoning between two quantities and tendency to find solutions regarding equations as problem solving tools. In this process, students tended to concentrate variables on unknown place holders and to had difficulty understanding various meanings of variables. Some of students generated errors about algebraic concepts. In conclusions, it is recommended that functional thinking including such as generalizing and reasoning the relation among changing quantities is extended, procedural as well as structural aspects of algebraic expressions are emphasized, various situations to learn variables are given, and activities constructing variables on their own are strengthened for improving gifted students' learning and teaching algebra.

• Journal of Wetlands Research
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• v.16 no.2
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• pp.235-243
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• 2014

According to the "Safety Evaluation Detailed Instructions (Dam)", precise safety inspection is carried out for dams that exceed a certain scale. However, as the Hydrological Safety Evaluation from various evaluation standards is designed to evaluate the safety of existing dams considering PMF, the evaluation is much less applicable for most agricultural reservoirs. Therefore, the Hydrological Safety Guidelines for agricultural reservoirs are expected to be re-evaluated considering the diverse risk factors with the coefficient model and AHP in this study. The coefficient model has been developed by selecting the hydrological safety superordinate subordinate evaluation factors to reflect diverse risk factors of agricultural reservoirs. After calculating the sum of indicators score for each evaluation factors, validation procedures were performed for the questionnaire which a panel answered. The practical coefficient has eventually been estimated for the hydrological safety evaluation considering the diverse risk factors. The conclusions acquired based on the study done are that both most agricultural reservoirs were classified as flood defense capability is insufficient and agricultural reservoirs which meet embankment-freeboard standards considering PMF was overestimated.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.4
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• pp.191-203
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• 2018

Identify the effects of ISO quality management system on the durability of the enterprise by applying it to early startups and small - and medium-sized enterprises. In particular, the quality management system of a technology start-up small and medium sized companies is important in applying the management system to the financial, management and quality control services rather than to research and development. The quality management system is applied to the medical equipment manufacturers, mobile phone brokers, foreign Chinese companies, and components manufacturers for diesel engines.Try it. Check the case where the quality management system has been applied to the company concerned and the nonconformities have been improved. In addition, the success of the project was determined by applying the quality control system to maintain the stability and perpetuation of the company through the case of the failed selection. The company explains that recently, it must appoint internal auditors to carry out continuous improvement activities and that those who want the development and continuity of the company must reflect the quality management system.

• Journal of Digital Convergence
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• v.14 no.9
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• pp.471-478
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• 2016

The purpose of this study to examine the effect of 12 hours fasting resistance exercise on metabolic efficiency and fatigue of middle-aged female for 8 weeks. 50 middle-aged female target group pre-test exercise group(EX) and the control over the homogeneity in the control group(CON) were selected for this purpose divided into two groups. Exercise group(EX) is maintained after 8 weeks four times weeks 12 hours fasting resistance was performed for 60 minutes, the control group(CON) were compared to a normal life with the group of the exercise group(EX). Resistance applied to the exercise group(EX) were using free weights and a fixed mechanism applied around the upper and lower body exercise program for heart muscle, exercise intensity based on the 70% 1RM until 4 weeks, 5-8, which was performed by the aid program set to 80%. Through this procedure were as follows. First, 12 hours fasting resistance exercise showed the significance of the interaction effect in metabolic efficiency, blood pressure(SBP, DBP), fat, fasting glucose, fasting insulin(p<.01). Second, 12 hours fasting resistance exercise showed the significance of the interaction effect in the treatment program in which lactic acid, uric acid(p<.01).