• Journal of Educational Research in Mathematics
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• v.8 no.2
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• pp.723-743
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• 1998

This study was designed for the purpose of finding some gender differences in the mathematical creative problem-solving ability. For this research, we selected two problems. One is "counting marbles" of algebra, and the other is "drawing figures" of geometry. And we examined and analyzed the written responses of the students with classifying the four categories; fluency, flexibility, originality, and elaboration. These are the factors of the creativity. There were no significant gender differences in the fluency, flexibility, and originality in both problems. but girls got significantly higher scores than boys in elaboration. In conclusion, boys tried unusual and special responses but gave many incorrect and many similiar answers, whereas girls had low scores in high originality but gave less incorrect and less overlapping answers than boys did.swers than boys did.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2018.05a
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• pp.124-125
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• 2018

The objective of this study is analyzing of requirements for improvement of the work-life balance of construction managers working in Korean construction companies. A survey has been conducted to analyze the requirements for improvement of construction managers. The survey was conducted on construction managers working in the field of architectural construction. 59 field managers working in 18 Korean construction companies responded to the survey. Upon analysis of the survey, the working hours were excessive and recreational time was very poor for the construction managers. There were differences in the answers regarding the areas that require improvement in the working conditions based on the age groups of the construction managers. A majority of young technicians selected that the recreational time and content of work require improvement, and technicians with a lot of experience selected that the stability of occupation and wage require improvement.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2019.05a
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• pp.76-77
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• 2019

Currently, there is a lack of studies on the directionality of architectural engineering education. This study has analyzed the opening and operation of courses relating to building construction in Korea universities. It was researched that the most common building construction courses opened in universities were 'building construction' and 'materials.' Courses are also being opened in universities by reflecting social demands. Upon analysis of the operation of the educational process of building construction, it was displayed that projects and examinations were conducted as the methods of assessment in courses at many universities. Additionally, there were universities that included quizzes and discussions in their methods of assessment. This study is expected to be used as data for studying an innovative means of educating architecture.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2018.11a
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• pp.69-70
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• 2018

With increased interest in the Fourth Industrial Revolution, there is also a growing interest in the innovation of college education. In this regard, this study aims to develop a learning model for building construction to nurture architectural engineers needed in the era of the Fourth Industrial Revolution. To this end, it analyzed the previous studies on the recent innovations in engineering education. Among the educational innovation methods presented in the previous research, a new learning model was derived by using the most suitable method for the building construction eduction. The derived learning model is a building construction learning model applying team-based learning and flipped learning. The learning model proposed in this study was developed as a learning method to nurture engineers needed in the future. Therefore, it is expected that this model can be utilized in the eduction of architectural engineering at universities in Korea.

• Communications of Mathematical Education
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• v.16
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• pp.279-287
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• 2003

본 연구는 고등학교 수학 교과의 6차시 분의 교실 수업을 비디오로 녹화하여 TIMSS 비디오 연구에서 사용한 코드와 현재 고등학교에서 수업 장학을 위하여 가장 많이 사용하는 점수형 수업참관록으로 분석하였다. TIMSS 비디오 연구의 코드를 활용하여 분석한 결과 교실 수업의 다양한 상황과 수업 내용을 자세하고 객관적인 결과를 얻을 수 있으나 1/3정도의 코드는 거의 사용되지 않는 문제점을 보여주어서 우리 나라 고등학교 수학 수업 분석을 위해서는 TIMSS 연구에서 사용한 코드의 수를 줄여서 고등학교 수학 교실 분석에 사용하는 것이 유용할 것 같다. 수업참관록의 요소를 사용한 분석 결과는 단순하고 개괄적이어서 수업 내용을 정확하게 분석하기는 어렵고 단지 수업 평가 정도의 의미를 지닌다. 따라서 수업참관록에 분석 요소를 추가시킴으로서 보다 의미있고 객관적인 수업 장학을 할 수 있을 것으로 사료된다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2004.11a
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• pp.1062-1066
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• 2004

In this study, refrigerant noise at connection of capillary tube and evaporator is investigated. Mechanism of refrigerant noise generation is examined in side-by-side type home refrigerator with two evaporators. It is found that the refrigerant noise is generated during refrigeration room fan-off (R-fan of) for that type refrigerator. The reason is that mass flow rate gets down during R-fan of and flow pattern is changed at outlet of capillary tube. We suggest designs for reduction of refrigerant noise with horizontal double expansion device, muffler, and accumulator. To evaluate those improved designs, sound quality index is used.

• Journal of Advanced Marine Engineering and Technology
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• v.37 no.4
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• pp.384-390
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• 2013

The sizes of cryogenic vessels and storage tanks are becoming bigger due to strong demands from semiconductor and LCD industry as well as high-tech electronic industry. Conventional level and pressure gauges used for cryogenic vessels were analog types which made exact measurement difficult for the remained quantity at lower levels due to their poor accuracy. In this study, a design for a digital type gas level gauge which can measure the pressure and level inside of the cryogenic liquefied gas storage tanks has been proposed by using a differential pressure sensor, in which the measured data are monitored by a host PC and are transferred to a mobile printer for data confirmation at local station.

• Journal of the Korean Society for Precision Engineering
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• v.21 no.4
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• pp.88-94
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• 2004

Recently, vehicle simulators are widely used to evaluate driver's responses and driver assistance systems. It needs much effort to construct the virtual driving environment for a vehicle simulator. In this study, it is described how to make effectively the roads and the driving environment for a vehicle simulator. The GIS (Geographic Information System) is used to construct the roads and the environment effectively. Because the GIS is the integrated system of geographical data, it contains useful data to make virtual driving environment. First, the outline and centerline of roads is abstracted from the GIS. From the road outline, the road width is calculated. Using the centerline, the grid model of roads is constructed. The final graphic model of roads is constructed by mapping road image to the grid model according to the number of lanes and the kind of surface. Data of buildings from the GIS are abstracted. Each shape and height of buildings is determined according to kind of buildings, the final graphic model of buildings is constructed. Then, the graphic model of roadside tree is also constructed. Finally, the driving environment for driving simulator is constructed by converting the three graphic models with the graphic format of Direct-X and by joining the three graphic models.

• Pediatric Infection and Vaccine
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• v.22 no.1
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• pp.36-39
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• 2015

Typhoid fever can cause serious complications, such as enterobrosia, meningitis, pneumonia, myocarditis, hepatitis, osteomyelitis, and disseminated intravascular coagulation in 10-15% of the patients. Kidney complications are very rare, and a few cases have been reported in children. We are reporting a case of childhood typhoid fever complicated with acute nephritis present with albuminuria, hypertension, and renal failure.

• Childhood Kidney Diseases
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• v.14 no.2
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• pp.236-239
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• 2010

Typhoid fever is a systemic infectious disease which affects many organs. In children, few cases have been reported of acute nephritic syndrome in typhoid fever. We report an immunocompetent 9-year old girl with typhoid fever complicated by acute tubulointerstitial nephritis who presented with prolonged fever and acute renal failure.