• Journal of Korean Clinical Nursing Research
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• v.14 no.2
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• pp.19-29
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• 2008

Purpose: The purpose of this study was to explore mothers' adjustments in raising children with Down syndrome and to develop a grounded theory about their adjustments. Method: Three mothers from each group of children in the ages below 7 years, 8-13 years, 14-19 years, and over 20 years participated in the study. Data were collected through an in-depth interview from twelve participants having a child with Down syndrome. Then it was analyzed simultaneously using the grounded theory method. Results: 'Adjustment of mother's expectation according to child's status' was emerged as a core category. The adjustment process was categorized into five stages: shocking, embracing, doing one's best with passion, lowering anticipation, and accepting another living. Conclusion: Being the mother of a child with Down syndrome is not considered to be a negative experience. There are positive experiences along with some more negative ones. Nurses working with families that include children with Down syndrome need to be aware of the obstacles the families will face and should advise necessary support.

• English Language & Literature Teaching
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• v.17 no.2
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• pp.59-77
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• 2011

In recent years, as many native English speakers are working in Asia to as English teachers, team teaching with local teachers has been commonly implemented within the Korean EFL classroom. Using qualitative case studies, this paper aims to explore native English-speaking teachers' (NESTs) perceptions of team teaching and their challenges at different secondary Korean schools. The study documents the challenges faced by three foreign teachers embedded in intercultural teaching teams. The data shows that common challenges include vague role distribution among teachers, problems presented by mixed levels of students, large classes, and students' low valuation during foreign teacher's classes, which go ungraded. The study calls for serious governmental efforts to change these fundamental problems and closely examine local factors that strongly affect team teaching practices before initiating a system of importing foreign teachers without proper preparation.

• Explosives and Blasting
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• v.12 no.1
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• pp.32-38
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• 1994

This study Is to summarize the contents for the investigation and design of the construction for oil storage. Since underground caverns are large scale, in their construction one should consider the mechanical stability of cave·rns and the economic view of construction. On the basis of them, cavern's section and layout were determined and water curtains were designed to maintain hydraulic equilibrium so that gases were sealed tightly. Also the supporting criteria for rock bolt and stotcrete were determined by means of the classification of rock masses and the results of finite element method. The criteria of grouting reinforcement were presented according to the results of injection test in the pilot holes of working face.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.10 no.4
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• pp.82-87
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• 2011

Lubrication has an important role to reduce frictional forces and temperature between cutting chips and the face of a tool. However, it has harmful effects to workers' health and working environment. The purpose of this thesis is to find cutting conditions through the quality analysis in boring for SM45C steel using MQL(Minimum Quantity Lubrication). Machining process is super drill, tip drill, end mill and boring in order. Experimental factors of boring and the quantity of mist air are properly selected. With the analysis of experimental data, this thesis shows that boring with MQL improves the surface roughness when spindle speed is 934rpm or feeding speed is 74mm/min.

• Journal of the Korean School Mathematics Society
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• v.1 no.1
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• pp.35-45
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• 1998

This paper will present some basic and simple graphical methods of exploratory data analysis for the instrument of data analysis at school mathematics. Human beings perceive visual patterns more readily than patterns in collections of numbers. This is especially important in exploratory data analysis because pictures dramatically reveal things that we did not expect to find in the data set. Here are graphical methods as the stem and leaf plot, the box plot, the star plot and the face plot. These methods impulse the motivation of students in real life. And the subject can be taught in secondary school with several applications. Also It is important for students to get a feel for working with and manipulating data before studying the more theoretical aspects of statistics.

• Tunnel and Underground Space
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• v.2 no.2
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• pp.190-198
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• 1992

This study is to summarize the contents for the investigation and design of the construction for oil storage. Since underground caverns are large scale, in their construction one should consider the mechanical stability of caverns and the economic view of construction. On the basis of them, cavern's section and layout were determined and water curtains were designed to maintain hydraulic equilibrium so that gases were sealed tightly. Also the supporting criterial for rock bolt and stotcrete were determined by means of the classification of rock masses and the results of finite element method. The criteria of grouting reinforcement were presented according to the results of injection test in the pilot holes of working face.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1997.04a
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• pp.1053-1057
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• 1997

Laser thin film process with a Q-switch pulsed YAG laser was performed for micro machining. In this research, we performed basic Cr thin film on glass substrates removal machining experiments. Form experiments, it happens not only evaporration of thin film but also spatter and cohesion of melting substance in working region, when machining a Cr thin film by Q-switch YAG laser beam irradiation. Critical energy of surface irradiation type by irradiation direction of laser in a face composing thin film on the glass is higher than that of back irradiation type, but the latter is favorable because of spatter appearance. In case of image formation position when laser beam is irradiated, the defocus is permitted to a certain extent within forcus depth. Ifexceeds focus depth, formation of pattern is vanishing step by step.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.19 no.4
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• pp.52-57
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• 2020

The frequency of the manufacturing and modification of automotive press dies via overlay welding has recently increased, but the welding quality depends on the operator skills and the working conditions. Therefore, this study presents a way to improve the overlay welding quality regardless of the operator skills. Three welding conditions with different pre- and post-heating treatments were tested on some specimens; the weld surface quality was analyzed by examining the cutting face. The results demonstrated the best quality of the weld surface that was heated before and after the welding.

• Journal of Korean society of Dental Hygiene
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• v.13 no.3
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• pp.369-376
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• 2013

Objectives : The objectives of this study is to investigate the handwashing and use of personal protection equipment in dental hygienists and provide the basic data for dental infection control guideline. Methods : A questionnaire survey was performed in the dental hygienists who participated in the continuing education by the Daejeon City Commission in October 2012. The collected data were analyzed using PASW 18.0. Results : Handwashing was well practiced in group working for 3 to 5 years of employment. Those who took the infection cnotrol training used liquid soap, paper towel, dental mask, protective goggles, face shield, and gloves. Conclusions : Infection control is the most important practice in dental hygienists. So it is necessary to emphasize the inportnace of personal protection equipment including medical gloves, dental mask, and goggles.

• Journal of Surface Science and Engineering
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• v.36 no.1
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• pp.1-8
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• 2003

In general, the microstructure in thin films was known to evolve in similar manner according to the energy striking the condensing film at similar homologous temperature, Th for the materials of the same crystal structure. The fundamental factors affecting particle energy are a function of processing parameters such as working pressure, bias voltage, target/sputtering gas mass ratio, cathode shape, and substrate orientation. In this study, Al, Cu, Pt films of the same crystal structure of face centered cubic (FCC) have been prepared under various processing parameters. The influence of processing variables on the microstructures and residual stress states in the films has been studied.