• Journal of Microbiology and Biotechnology
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• v.15 no.4
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• pp.701-709
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• 2005

An efficient method of selecting an antagonistic strain for use as a biological control agent strain was developed. In this improved method, the surface tension reduction potential of an isolate was included in the 'decision factor,' in addition to two other factors; the growth rate and pathogen inhibition. By using a statistically designed method, an isolate from the soil was selected and identified as Bacillus sp. GB 16. In the pot test, this strain showed the best performance among the isolated strains. The lowest disease incidence rate and fastest seed growth were observed when the Bacillus sp. GB 16 was used. The action of the surface tension reducing component was assumed to enhance the wetting, spreading, and residing of the antagonistic strain in the rhizosphere. This result showed that the improved selection method was quite effective in selecting the best antagonistic strain for the biological control of soilborne infectious plant pathogens.

• The Journal of the Korea Contents Association
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• v.17 no.4
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• pp.229-236
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• 2017

Technology foresight is the process which investigate long term science, technology, economic and social effects to derive strategic R&D and future promising technologies. This study shows that new systematic framework based on technology classifications of space and action in human society, future six senses was employed as a new research method for effective process of future technology foresight. In addition, to increase the acceptance, forecasting, and uniqueness of new technology, we derived major issues of future society and demand-base products and services through the new process of ICT future mega trend analysis, the findings and selections of future technology, and future scenario based on human six senses.

• Journal of Microbiology and Biotechnology
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• v.19 no.12
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• pp.1590-1595
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• 2009

Alternative methods for controlling bacterial endospore contamination are desired in a range of industries and applications. Attention has recently turned to natural products, such as essential oils, which have sporicidal activity. In this study, a selection of essential oils was investigated to identify those with activity against Bacillus subtilis spores. Spores were exposed to 13 essential oils, and surviving spores were enumerated. Cardamom, tea tree, and juniper leaf oils were the most effective, reducing the number of viable spores by 3 logs at concentrations above 1%. Sporicidal activity was enhanced at high temperatures ($60^{\circ}C$) or longer exposure times (up to 1 week). Gas chromatography-mass spectrometry analysis identified the components of the active essential oils. However, none of the major oil components exhibited equivalent activity to the whole oils. The fact that oil components, either alone or in combination, did not show the same level of sporicidal activity as the complete oils suggested that minor components may be involved, or that these act synergistically with major components. Scanning electron microscopy was used to examine spores after exposure to essential oils and suggested that leakage of spore contents was the likely mode of sporicidal action. Our data have shown that essential oils exert sporicidal activity and may be useful in applications where bacterial spore reduction is desired.

• Journal of Korean Academy of Nursing
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• v.14 no.1
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• pp.34-49
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• 1984

This study was carried out to collect basic information of the budget and management of the nursing service equipment A survey was conducted with charge nurses (72), head nurses (400), supervisors (93), nursing directors (43) in 134 Hospitals The questionnaire was consisted of 34 questions related to management of budget, facility, supplies, and equipment We investigated from l0th to 22nd, Oct 1983. The results obtained were summarized as follows: 1) A budget for the department of nursing was 65.4% (51/78) 2) A budget commitee was 43.6% (34/78) 3) 51.3% took corrective action for the deviation from the budget, if indicated (40/78) 4) An established lost conciousness program in the hospital was 87.2% (64/68) 5) A formalized system for the maintenance of supplies for the patient care units was 87.2% 6) 87.9% had stocks level which was established for patient care units. 7) 64.6% had safeguards for the storage of special equipment which was investigated regularly in 54.7%. 8) The director of nursing or her representative, participates in the selection was 72.4%, 9) 58.2% was provided instruction in the use of equipment by manufacturers of technical equipment.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.11 no.3
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• pp.1477-1491
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• 2017

Inspired by the multi-scale nature of hippocampal place cells, a biologically inspired model based on a multi-scale spatial representation for goal-directed navigation is proposed in order to achieve robotic spatial cognition and autonomous navigation. First, a map of the place cells is constructed in different scales, which is used for encoding the spatial environment. Then, the firing rate of the place cells in each layer is calculated by the Gaussian function as the input of the Q-learning process. The robot decides on its next direction for movement through several candidate actions according to the rules of action selection. After several training trials, the robot can accumulate experiential knowledge and thus learn an appropriate navigation policy to find its goal. The results in simulation show that, in contrast to the other two methods(G-Q, S-Q), the multi-scale model presented in this paper is not only in line with the multi-scale nature of place cells, but also has a faster learning potential to find the optimized path to the goal. Additionally, this method also has a good ability to complete the goal-directed navigation task in large space and in the environments with obstacles.

• Culinary science and hospitality research
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• v.24 no.2
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• pp.23-33
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• 2018

Food adulteration and food fraud should not be neglected. The present study aimed to investigate the awareness of adulterated food and its management beliefs and capabilities among teenagers' parents. Data were collected from 425 adolescents' parents having different levels of income and education. The results of factor analysis indicated that adulterated food management beliefs was classified into attitude, necessity, and anxiety. The adulterated food management capability was sub-grouped into hygiene and nutrition, knowledge, citizen action and environmental grasp. The adulterated food management capabilities were significantly different according child's school, education level and monthly income (p<0.05). The attitude factor of adulterated food management beliefs appeared to have a significant (p<0.05) impact on all factors of adulterated food management capabilities, however the necessity factor had a significant (p<0.001) impact only on factor of hygiene and nutrition. The results of the present study suggested that parents need to be aware themselves as well as to teach their children about right food selection and consumption. The findings of the study might be useful in government policy planning regarding the public health issues and dietary education of adolescents and parents.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.21 no.12
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• pp.3086-3097
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• 1996

Generally, the performance of the computer network may differ according to various parameters like routing, bandwidth and timers. Since the network system requirements may widely very according to specific application, computer network must be tailored at tailored at the design starge by selection of appropriate protocols and assignment of degfault parameter. However, since the condition under which a network actually operates may change from that considered at the design stage, control and managment action are required to adjust the network parameter so that the perforance of network is satisfied.

• Journal of the Korean Society for Library and Information Science
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• v.42 no.1
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• pp.63-81
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• 2008

The purpose of this research is to analyze the characteristics and problems of "Reading Cheongju" campaign which started as "One Book, One City" reading promotion campaign in 2006 and conducted three times in two years. The analysis of such steps as the selection and distribution of "one book", reading and discussion. events and programs, financial assistance, public relations, etc. documents both positive and negative aspects of its performance. "Reading Cheongju" campaign helped improve both the image of the Cheongju Information Library and the importance of reading and discussion in the community, while lacking in participation from diverse groups of community members, flexibility in spending public expenses, and cooperation among libraries and other related organizations.

• Journal of architectural history
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• v.25 no.4
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• pp.19-29
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• 2016

This study is based on the 15th century's architecture Mohwagwan and Taepyeonggwan and the architects behind it. The results were as follows: First, inline with Ming dynasty's protocol, the King of Joseon marched with honor guard in front of his people. Therefore, the Joseon dynasty needed to match space was implemented and result in Mohwagwan and Taepyeonggwan. Second, King Taejong founded Mohwaru to share the role with Taepyeonggwan. He appropriately utilized Mohwaru as a place in manners before people enter the Seoul city wall. And He organized this architecture on the level of the palace. Third, Pak Jacheong was overseer the whole constructive process, from the selection of site, landscaping, construction, maintenance to civil engineering of Mohwaru. There are many difficulties, but he completed through the construction work owing to the protection of King Taejong. Forth, Hong Li worked with Pak Jacheong to build Taepyeonggwan and Mohwagwan from Taejong to Sejong. Supervisors in King Sejong times were required not only private capability but also understanding the Confucianism ritual. Hong Li was faithfully performed the role. Fifth, Sejong was recognized only an excellent ruler but he was also a great coordinator with a professional knowledge about architecture. These Sejong's action fully can be seen as an architect.

• Journal of Electrical Engineering and Technology
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• v.8 no.3
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• pp.478-489
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• 2013

The controllability and stability of power systems can be increased by Flexible AC Transmission Devices (FACTs). One of the FACTs devices is Interline Power-Flow Controller (IPFC) by which the voltage stability, dynamic stability and transient stability of power systems can be improved. In the present paper, the convenient operation and control of IPFC for transient stability improvement are considered. Considering that the system's Lyapunov energy function is a relevant tool to study the stability affair. IPFC energy function optimization has been used in order to access the maximum of transient stability margin. In order to control IPFC, a Brain Emotional Learning Based Intelligent Controller (BELBIC) and PI controller have been used. The utilization of the new controller is based on the emotion-processing mechanism in the brain and is essentially an action selection, which is based on sensory inputs and emotional cues. This intelligent control is based on the limbic system of the mammalian brain. Simulation confirms the ability of BELBIC controller compared with conventional PI controller. The designing results have been studied by the simulation of a single-machine system with infinite bus (SMIB) and another standard 9-buses system (Anderson and Fouad, 1977).