• 대한공업교육학회지
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• v.39 no.2
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• pp.37-57
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• 2014

This study investigated perception of first-year college students who recently experienced technology education in their secondary education for describing contemporary technology classrooms. To accomplish this goal, survey and in-depth interview on their technology classrooms were employed. Participants in this study were 427 first-year college students who began their college life in 2013 and consisted of 224 students enrolled in 10 departments of educational major and 203 students who enrolled in 9 departments of other colleges. The instrument of this study consisted of preference toward technology classrooms and teachers, experience in the secondary technology classrooms, perception toward technology teachers, and suggestions for technology classrooms with five point Likert scales and open-ended questionnaires. And individual in-depth interviews with 22 volunteers who answered the instrument and consented the interview process were conducted. Based on the collected data, statistical and theme analyses were performed and the key findings were as follows. First-year students' experiences for technology classrooms were described with the theme of 'learning contents or activities'(54.4%). And the negative perception toward technology classrooms(29.1%) was larger than he positive perception(16.5%). The perception toward technology classrooms was also presented with two themes of teaching methods and subject interest. The perception toward technology teachers presented a medium level preference with several themes of teachers' teaching methods, teachers' personality, and subject interest. Lecture style method(60.48%) was largely used in the participants' technology classrooms and problem solving or collaborative methods was not frequent(19.31%). The participants indicated a need for improving teaching methods in technology education and suggested sufficient administration and curriculum supports and transitions of the learning contents. Further studies investigating the diverse public's perception toward technology and technology classrooms could be recommended.

• Journal of Intelligence and Information Systems
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• v.11 no.3
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• pp.103-115
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• 2005

For today's enterprises to survive in the current rapidly changing business environments, it is imperative to make quick and successful decisions to various challenges. In making important business decisions, if enterprises utilize business rules and knowledge, properly and promptly, they may effectively reduce the chance of failures. However, in most of today's information systems, these rules and knowledge are not managed in centralized and systemic manner. They disperse over entire enterprises' information systems, and sometimes reside in the heads or memos of enterprises' employees. BRE (Business Rule Engines) is a solution that systematically and centrally manages these business knowledge and rules of an enterprise. With BREs, any business user is able to store, edit, retrieve and utilize business rules and knowledge in centralized repository, without IT development skills. And with BRE, enterprises could improve business intelligence and attain strategic advantages over other enterprises. However, since there is no clear criteria for BRE introductions, it is not easy to decide whether or not to introduce the expensive BRE solution to an enterprise. In this research we propose a decision model for BRE introduction. Using this model, business analysts considering BRE introduction, readily make decisions on BRE introduction.

• Journal of The Korean Society of Grassland and Forage Science
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• v.23 no.1
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• pp.31-36
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• 2003

This pot experiment was conducted te find out the effects of kieserite application ($T_1$; control, $T_2$; standard amount of $N-P_2$$O_{5}$ $-K_2$0, $T_3$; $T_2$+ kieserite) on the seedling vigour and yield of pass/clover mixed swards on newly reclaimed hilly soil. The results obtained are summarized as follows: At the $T_1$ treatment the seedling vigour and yield of mixed forages were very poor, whereas they were remarkedly enhanced by the treatments of $T_2$ and $T_3$. Comparing with the $T_2$ treatment the forage yields were increased 3.1% in orchardgrass, 27.5% in ladino clover, and 12.8% in mixed forages by the application of kieserite($T_3$). In the grass-clover mixed swards, the application of kieserite more remarkedly influenced the seedling vigour, botanical composition, and yield of clover than those of grass.

• Journal of The Korean Society of Grassland and Forage Science
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• v.27 no.1
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• pp.45-52
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• 2007

This study was conducted from 2003 to 2005 at crop field of National Institute of Subtropical Agriculture, RDA, in Jeju. The treatment consisted of chemical fertilizer 100%(CF 100%, T1), cattle manure 100%(CM 100%, T2), CF 50%+CM 50%(T3), CF 25%+CM 75%(T4), CM 100%(1st yr.)+CF 100%(2nd yr,)+CM(3rd yr)(T5), CM 100%(1st yr.)+CF 100%(2nd yr.)+CF(3rd yr.)(T6). The highest substitution effect of chemical fertilizer for cattle manure indicated that the highest yield(Avg. 11,169 kg/ha) obtained from CM 100%(1 yr.)+CF 100%(2 yr.) treatment. The forage yield of CM 100%(1 yr.)+CF 100%(2 yr.) was 4% more than CM 100% application whereas was 3% less than CF 100% application. Changes of physical and chemical properties of soils for applications of CF 100% and CM 100% was clearly in cattle manure application. Especially, cattle manure application in pasture were superior to chemical fertilizer application with respect to organic matter(OM, %), total nitrogen(T-N, %), and avaliable phosphorous($P_2O_5$, %) contents of soils. In this present study, cattle manure application recorded slightly lower forage yields than CF 100% application but the combined use of cattle manure and chemical fertilizer was attribute to reduction of chemical fertilizer application rate as well as maintaining soil health on long-term basis.

• Korean Journal of Food Science and Technology
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• v.49 no.1
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• pp.97-103
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• 2017

Due to increased consumption and demand for oat-related foods and processed food, this study examined physicochemical properties, antioxidant activity, and ${\beta}-glucan$ contents of 5 Korean naked oat cultivars. Oat seeds had long-grain appearance in all cultivars except for Seonyang. The contents of main components such as protein, starch, and crude fat were significantly different among cultivars. The total ${\beta}-glucan$ content was 3.78-4.60% and the soluble ${\beta}-glucan$ ratio was 71-83%. Fatty acid composition was C18:1, C18:2, C16:0, C18:0, and C18:3. Unsaturated fatty acid (USFA) content was 75.4-81.2%. 2,2-Diphenyl-1-picrylhydrazil (DPPH) and 2,2'-azino-bis-3-ethyl-benzo-thiaxoline-6-sulfonic acid (ABTS) radical scavenging activity were significantly different for each cultivar. Daeyang had the highest ${\beta}-glucan$, USFA content, and antioxidant activity. Protein content showed a negative correlation with starch content (r = -0.775). Antioxidant activity was positively correlated with total phenol content (r =0.760). Ash content and flour whiteness showed a positive correlation (r =0.732).

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.6
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• pp.197-208
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• 2017

The purpose of this study was to construct and test a structural equation model for college student's gambling behavior. A structured questionnaire was completed by 246 college students to analyze the relationships between perspective factors(irrational gambling belief), psychological factors(depression, anxiety), social factors(parental monitoring, parental support, friend support), self-control and gambling behavior. The moderating effects of gender, friends and family's gambling behaviors were examined. The data were analyzed using SPSS 21,0 and AMOS 20.0 programs. Self-control and psychological factors directly affected the college student's gambling behavior, while perspective factors and social factors affected it indirectly. The model fit indices of the modified model were suitable for the recommended levels. The overall study findings suggest the need to develop a gambling prevention program for college students that reinforces self-control, parental monitoring and support, and friend support while reducing irrational gambling belief, depression, and anxiety. An approach that considers gender and a development of a group counseling program for family or friends are also required.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.10
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• pp.361-367
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• 2018

This study was conducted to survey 1,067 adult learners who are attending lifelong education center in universities in Seoul, Gyeonggi-do, and Chungcheongnam-do in order to understand educational satisfaction and its effects factors. Educational satisfaction is composed the following factors: overall satisfaction, instructor, education contents, education methods, educational facilities and environment, and staff service. Also, we had a conditional factor in educational satisfaction for this survey; for example, the analysis of correlation at the education satisfaction variables between age, region, and gender. The key study results are as follows. First, the overall educational satisfaction was higher than the level of averages in the lifelong institute of the universities. Second, the highest factor was the satisfaction at the adult learners which is instructors in their curriculums among various factors; however, the staff service was the lowest. The third, the main variables influencing educational satisfaction were instructors, education contents, and facilities and environments of the institutes. To be specific, the explanatory power of these three variables was about 36 percent of the total effects on the satisfaction of education. Therefore, the implication for managing the lifelong education institutes for the adult learners are that the institutes and universities should have a priority in these areas: instructors, education contents, and facilities and environments.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.7
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• pp.537-543
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• 2020

In order to cultivate the talents needed in the 4th industrial revolution era, it is necessary to select gifted students and train them systematically. The affective characteristics of the gifted are self-concept, personality, sociality, motivation, morality, attitude and interest, and these are important factors that affect science achievement. In particular, computer scientific attitude is an important variable affecting computer science achievement. This study developed a computer scientific attitude test based on TOSRA developed by Fraser to measure the affective characteristics of information-gifted students. The computer scientific attitude test is composed of 7 areas: social implications of computer science, attitude to computer scientific inquiry, adoption of computer scientific attitudes, adoption of computer scientific attitudes, leisure interest in computer science, career interest in computer science, and normality of computer scientists. The relationship between computer scientific attitude and academic achievement of gifted students was analyzed using the developed test. To determine find out whether computer scientific attitude significantly predicts academic achievement, the results of a regression analysis showed that t = 2.543 and p = 0.025, indicating that the average of computer science attitude significantly predicted academic achievement.

• Journal of the Korea Organic Resources Recycling Association
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• v.5 no.2
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• pp.47-56
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• 1997

To examine of possibility protein recycling of shaving scraps contained chrome generated from manufacturing process of leather, the characteristics of hydrolyzed protein that differently treated with MgO as alkaline agent were investigated. In alkaline hydrolysis of saving scraps treated with MgO, MgO had to be treated over 5.0% to maintain over pH 8.0 that is insoluble of chrome. Under the condition of alkaline treated with MgO, the solubility of chrome is low with about 60%. The average molecular weight of hydrolyzed proteins from shaving scraps treated with MgO was about 80~100 KD. The amino acid contents of that were largely collagen proteins such as glycine, alanine and proline, and acidic amino acids such as aspartic acid and glutatamic acid. The contents of Mg, Ca and Na in hydrolyzed protein were too much as liquid fertilizer, and chrome contents was 30~40 ppm that largely decreased in comparing with raw materials (40,000~42,000 ppm).

• 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.