• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2001.10a
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• pp.375-380
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• 2001

This study is on the precision of the optical scanner which is suitable for shape modeling and non-contact equipment, comparing with a razer scanner. The optical scanner not only has all merits that non-contact methods have but also improve a veil phenomenon which is a razer scanner's demerits. However, the optical scanner has not been used extensively because the measurements are not very precise and there are not the definite methods of measurement. Hence, this study is to find out how parameters such as camera's hight, angle, luminous intensity, distance to object, and so on have an influence on measuring using the optical scanner and to establish the methods of measuring precision.

• Journal of Life Science
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• v.8 no.4
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• pp.373-380
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• 1998

A considerable change observed in X-ray diffraction during the muscle contraction was that the movement of myosin head and conformational change of contractile monecules were occurred in the muscle contraction. Time slice requires tension peak after the onset of stimulation and the height of tension peak depends on the number of twitch cycle. The intensity of I$_{11}$, I$_{10}$, 143${\AA}$ reflection is measured with 5ms time resolution and is recorded in isometric tension. The peak height of I$_{11}$ and 143${\AA}$ intensity is changed after the onset of a stimulation I$_{i}$, and the length of twitch is shortened by successive twitches in the case of stimulation TI$_{i}$. On the other hand, the peak height of I$_{11}$ and 215${\AA}$ intensity starts to decrease at the 1st twitch and remains constant at low peak hight without appreciable recovery during the contraction term. In the case of uccessive twitch stimulation, the myosin heads of muscle are once moved from their resting position and never returned to their initial position.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.7 no.4
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• pp.313-320
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• 1995

A numerical analysis on the wave deformation in the shallow water region is performed for the case of two intersecting wave trains of the same frequency on uniformly sloping beaches. This model is based on the consideration of wave energy balance and wave action conservation, and iteratively solved the set of conservation equations of both mass and horizontal momentum. Using the computed results, the wave deformations in accordance with the variation of the parameters luck as incident wave angie and wave height in deep water which influences the variation of wave hight and mean water level under the intersecting wave trains in the shallow water region. are considered.

• Journal of Korean Society for Atmospheric Environment
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• v.16 no.5
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• pp.545-552
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• 2000

Eight aromatic hydrocarbons were quantified in a newly constructed building before occupancy during the period of November 1997 to January 1998. Air samples were collected in 6 L stainless steel canisters for 8 hours based on working hour. It was found that the measured total concentration of aromatic hydrocarbons decreases rapidly with time up to a steady-state value. However, the fractions for each aromatic hydrocarbon were greatly changed with time. The concentration ratios of indoor to outdoor for aromatic hydrocarbons are greater than 1 during early period of the measurement, and the ratios decrease with time. The concentrations of toluene, m+p-xylene, ethylbenzene, and o-xylene are much higher than those of styrene, 1, 2, 4-trimethylbenzene, and 1, 3, 5-f trimethylbenzene in indoor air. The concentration fractions of m+p-xylene, ethylbenzed, and o-xylene in indoor air are about twice as hight as those in outdoor air measured during the similar period. It was concluded that the aromatic hydrocarbons were emitted from building materials, paints, and adhesives in an-built building.

• Journal of the Korean Society of Food Culture
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• v.6 no.4
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• pp.413-419
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• 1991

This study aims to evaluate the degree of malnutrition of children by three nutritional indicators-Weight for Age, Hight for Age, Weight for Height. The results are as follows; The average height and weight of children are much lower than Korea average height and weight. In terms of Weigh for Age, 20-40% of the samples belongs to below-2 standard deviation from the mean of reference group. 90% of the samples falls into the region below the mean. The standard deviation score indicates negative sign for eighty to ninety percent of the samples. The malnutrition of the samples is also confirmed in terms of Height for Age. In terms of Weight for Height, the mean of the samples is not significantly different from that of the reference group. Tests of the nutritional status under basis of three nutritional indicators show that approximately 50% of the samples had suffered from malnutrition and 17% of the samples have suffered from malnutrition.

• Proceedings of the KIEE Conference
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• 2008.04b
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• pp.19-21
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• 2008

현행 배전선로의 전주근가(1.2m 장방형)는 오거크레인을 이용한 건주공사 완료 후 전주근가 시공을 위한 별도의 인력 또는 백호우 장비가 추가로 투입피어 시공함으로써 인력으로는 공사시간이 장기간 소요되고 백호우장비로는 작업장 환경훼손과 시공원가 상승의 문제점이 있었다. 이러한 문제점을 해소하기 위하여 건주공사에 사용되는 오거크레인의 굴착 직경을 80cm까지 확장 가능한 '신축형 오거크레인용 유압식 확장기'와 원형 굴착공에 시공이 가능한 '아치형 전주근가'를 개발하고 이를 이용한 시공기술을 개발함으로써 동일장소에서 굴착작업이 수반되는 건주작업, 전주근가 매설작업을 가능하게 하여 장비활용성 증대, 작업장 환경개선, 공사기간 단축 및 시공원가 절감 등의 효과가 기대되는 기술을 개발하였다.

• Journal of Korean Society for Atmospheric Environment
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• v.16 no.E2
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• pp.97-103
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• 2000

A Thermal Internal Boundary Layer(TIBL) develops over the landside from the coast due to the surface temperature difference between the land the sea when sea breeze froms. The TIBL plays an important role in determining the pollutant concentrations where the plume emitted from a tall stack near the coast fumigates to the ground. The fumigation results in the high ground the TIBL height from the available meterological data is very important. The TIBL models avaliable in the literature were analyzed to identify the suitable model to apply in the fumigation. The TIBL heights predicted by the existing models were compared with the measurements in the water tank experiment. The results show that the TIBL models by Raynor is appropriate to predict the height of TIBL.

• Journal of Nutrition and Health
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• v.30 no.2
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• pp.195-200
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• 1997

A graphical method to determine the anthropometric levels that's are lean, slightly lean, normal, slightly obese, obese by BMI, Broca and Rohrer indices was developed. On the graph of height vs. weight, regions corresponding to the anthropometric levels were separated by equations calculated with boundary conditions for BMI, Broca and Rohrer indices, respectivelyl. It was observed that the determinations of the anthropometric level was influenced by the weight to a larger extent than the hight, which magnitude was in the order of BMI>Broca>Rohrer. There appeared significant differences between the results of the anthropometric level for higher and weight by BMI, Broca and Rohrer indices, respectively. Conclusively, the graphical method was proved as a good means to analyze and compare the anthropometric levels from BMI, Broca and Rohrer indices.

• Journal of the Korean Applied Science and Technology
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• v.5 no.2
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• pp.17-28
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• 1988

This experiment is carried out to study alteration of phospholipid compoent in liver, kidney, testis, and brain tissues of male rats which are fed selenium added high fat diets for 7 weeks. The phospholipids of these tissues are analyzed by TLC method. The results are as follows. 1. The growth rate and food intake levels are not affected by selenium-added high fat diets. 2. The levels of total cholesterol, total lipid and TBA are lower in selenium-added diets than selenium free diets 3. The total phospholipid levels of each tissue are kidney > brain > testis > liver and the levels of phospholipid component are Le>Sph>Ce>LLe for kidney and liver, Le>Sph>LLe>Ce for testis and brain.

• Journal of the Korean Institute of Landscape Architecture
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• v.26 no.2
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• pp.219-228
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• 1998

This study was investigated a optimum planting density of urban public park in seoul. Eight species commonly usd as landscape plants were selected. The survey was conducted to measure hight and width of the trees by five years interval. The results are summarized as follows. The average annual growth rates of the trees after planting were 7.4% in height 11.7% in width. Faster grown trees than average growth rate of the survey tres wee Metasequoia, glyptostroboides and Acer buergerianum, While the slower grown trees were Pinus koraiensis, Ginkgo biloba and Zelkova serrata. The average grown trees were Pinus strobus, Pinus densiflora and Acer palmatum . The planting density of survey area was 0.20tree/$m^2$. The optimum planting density was kept until five years after planting, however overcrowding density was found beyond five years after planting. This study also found the density of ten years after planting reaches about 3 times of optimum density.