• Journal of Broadcast Engineering
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• v.2 no.2
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• pp.216-224
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• 1997

In this paper, we propose a depth information extraction method for intermediate image synthesis. As stereo matching method, MBS(Multiple-Baseline Stereo) method has been proposed, in which the matching accuracy increases by using the multiple camera, but there are some inherent problems such as computational complexity, boundary overreach(BO) in depth map, and occlusion. So, we propose the modified version of MBS so called Multi-Resolution MBS(MR-MBS). Moreover, we also propose an adaptive occlusion area processing technique to improve the accuracy of the depth information in occlusion area.

• Journal of the Society of Naval Architects of Korea
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• v.35 no.1
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• pp.98-106
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• 1998

This paper shows the temperature distribution of double hull compartment and of cofferdam in a large LNG Carrier. In LNG Carrier, due to the lower cargo temperature($-163^{\circ}C$), structures are forced to lose their strength if additional heat is not supplied. So it is very important to estimate the temperature distribution and the heat flux needed to maintain the structure properly. The temperature of each compartment is obtained using 2-dimensional model analysis and compared with 3-dimensional results. And also this paper gives preliminary estimation of pipe length to supply necessary heat flux in bare pipe and finned pipe.

• Journal of the Society of Naval Architects of Korea
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• v.59 no.2
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• pp.109-117
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• 2022

Membrane panels are installed in LNG cargo-hold in order to endure extremely low temperature LNG. Although there are several types of membranes around the world, Korean LNG cargo containment system is developing to accomplish technology independence from the other countries. The membrane panel of Korean LNG cargo containment system is composed of corrugation and flat sheets which are arranged asymmetrically. It is very important to reduce the number of the type of corrugation sheet because a mold is required as much as the type of the corrugation sheet. Therefore, we proposed an optimization method to minimize the type of the corrugation sheet. For this method, the number of pitches, which is the distance between the centers of two corrugation sheets should be minimized. We also developed optimized arrangement procedure of the flats simultaneously. Finally, the developed optimization program is applied to 174K LNG cargo hold, and the minimum pitch size is found.

• Journal of Energy Engineering
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• v.7 no.1
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• pp.44-56
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• 1998

Separate heat pipe exchanger is considered as the high thermal transportation equipment, because evaporator and condenser are separately positioned in the long distance. Its characteristics are that the working fluid is circulated naturally by the position height of two exchangers. But the operating characteristics are restricted by the temperature of hot and cold fluid, flow pattern and diameter of vapor line, etc. in this study, the vapor pressure and the minimum height of two exchangers are studied about the factors restricting the operating characteristics.

• The Journal of the Korea Contents Association
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• v.19 no.11
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• pp.168-177
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• 2019

In cinema, a montage can be defined as temporalization. In reverse, it is evident that this method results in the spatialization of time. In movies, you are free to go to the past or future, see separated times together, and separate the same time into different ones. Therefore, in one aspect, time is turned into space, and on the other hand, space is turned into time. In conclusion, space in cinema inevitably expresses time. The movie the creative arrangement of time and space played a big role in making a movie that simply overlaps a story from high school to the present attract over seven million audiences. Director Kang Hyung-cheol used his unique film production language to transform boring into cheerfulness and stale to delight, and he helped the audience heal their wounds from their youth. He said, "The most important aspect of movie production is creating visual stories, and the background of such visual story is time and space." This paper aims at analyzing the creative time and space production of the director in the film .

• Korean Journal of Construction Engineering and Management
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• v.5 no.2 s.18
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• pp.211-218
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• 2004

In a large owner organization, a program manager of multiple maintenance and remodeling projects has experienced increasing scale and complexity of coordinating the M/R projects with in-house technicians who belong to multiple trade shops. This paper proposes a dual-level hierarchical planning strategy that consists of a program master plan in the long-term horizon and a master construction schedule in an operational scheduling window. A rolling horizon approach to the program master plan is proposed to deal with the external uncertainty of unknown stream of project requests. A resource-constrained scheduling algorithm is developed to generate the master construction schedule in a scheduling window. During development of the algorithm, more emphasis is placed on long-term organizational resource continuity, especially flow management of program constraint resources, than ephemeral events of an individual activity and project. Monte Carlo simulation experiments of three scheduling windows are used to evaluate the relative performance of the proposed scheduling algorithm against three popular scheduling heuristics for resource-constrained multiple projects.

• The Journal of the Convergence on Culture Technology
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• v.9 no.5
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• pp.927-934
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• 2023

This study explored the process of how children are connected to and placed in the daycare center's interest area environment. Focusing on the process of getting to know, we tried to understand it through Deleuze's concept of connection-placement, which emphasized the power between materials and humans, to see how the familiar environment called the area of interest affects children's behavior. For this purpose, 20 children in the mixed class aged 4-5 years at B Daycare Center in Seoul were observed for a total of 2 hours each through 2 preliminary observations and 5 research observations from March to May 2023. First, the results of the study showed that infants' true interest could be found in the infant's gaze, not in the adult's gaze. Second, the space and play materials of the interest area environment are structurally arranged in accordance with the order of play types, but the boundaries become ambiguous as they are connected to children. Third, although the children's play seemed to be play without deviating from each area of interest, the space itself was a single mass in which interest was expressed. We hope that this study will help instructors in their practice of constructing an environment for areas of interest, and that we will become instructors who ask questions at every moment about what kind of traces will be left on children's thinking as the environment of space and media.

• Journal of Science Education
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• v.40 no.2
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• pp.144-165
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• 2016

The purpose of this study was to develop 'Appropriate Technology' theme STEAM Program for the elementary students and investigate the effects of the program on creative thinking activity, scientific attitude and leadership. Participants were 3grade 85 elementary school students. Before and after the program, the participants were asked to take the tests about creative thinking activity, scientific attitude and leadership. The major results of this study were as follows. First, the total score of experimental group's creative thinking activity and all 4 sub-domains was significantly improved than those of comparative group(p<.05). Second, the total score of experimental groups' scientific attitude was significantly improved than that of comparative group(p<.05). Among 7 sub-domains, curiosity, voluntariness, perseverance were significantly developed. Third, total score of experimental groups' leadership was significantly increased than that of comparative group after the STEAM program (p<.05). In the first factor, the score of inner and inter personal characteristics were significantly developed.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1979.05a
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• pp.3.2-3
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• 1979

Bone conduction loss is one of the most common complication in chronic otitis media, and is mostly high frequency loss. Of 233 tympanomastoidectomy ears, 187 ears were considered eligible for this study. A histopathological change was examined in the natural otitis media of guinea pigs. It is our intention to analyze the pattern of bone conduction loss in chronic otitis media, and to correlate this findings with clinical and pathological changes in human and animal otitis media. l) In unilateral cases, a significant difference in bone conduction threshold was observed between normal and diseased ears, and between each frequency with significant interaction between 2KHz and 4KHz (p 0.01). 2) Using one way analysis of variance, mean bone conduction was compared with the duration of disease. We observed a significant difference (p 0.05) between each group of duration, except between 11-15 and 15-20 years group. 3) A comparison of bone conduction between stapes loss group and intact stapes group revealed significant t ratio (p 0.01) at each frequency. The effect of stapes loss on each frequency was evaluated, using one way analysis of variance. there were significant difference(p 0.05) between 250Hz and 500Hz. and between 2KHz and 4KHz. 4) A comparison of bone conduction between round window obliteration and nonobliteration group revealed significant t ratio (p 0.01) at each frequency. Using one way analysis of variance. the effect of round window obliteration was evaluated in each frequency. We observed significant difference (p 0.05) between 250Hz and 500Hz. and between 2KHz and 4KHz. 5) A comparison of bone conduction between cholesteatoma and non -cholesteatoma group revealed significant t ratio (p 0.01) only in 2KHz and 4KHz. No significant differency was observed in mean bone conduction. 6) In a histopathological study of natural otitis media in guinea pig, we observed inflammatory infiltration of the round window membrane, serofibrinous precipitate in the scala tympani, and degeneration of the organ of Corti most significant near the basal turn. These changes would explain high tone bone conduction loss in the process of chronic otitis media.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.13 no.5
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• pp.407-415
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• 2002

In this paper, mutual coupling effect between antennas mounted on UAV(Unmanned Air Vehicle), operating In different frequency bands, is calculated for supposing efficient arrangement. For the calculation, FDTD method is used, simulation parameters are confined to distance between antennas, height of antennas, types of ground, etc. The simulation data are compared with those of other numerical method to confirm accuracy of the results. It is appeared that the critical factor of mutual coupling is height of an antenna relative to that of the other antenna.