• Journal of Korea Multimedia Society
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• v.20 no.4
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• pp.606-613
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• 2017

When the planar area is captured by the depth camera, the shape of the plane in the captured image has perspective projection distortion according to the position of the camera. We can correct the distorted image by the depth information in the plane in the captured area. Previous depth information based perspective distortion correction methods fail to satisfy the real-time property due to a large amount of computation. In this paper, we propose the method of applying the conversion table selectively by measuring the motion of the plane and performing the correction process by parallel processing for correcting perspective projection distortion. By appling the proposed method, the system for correcting perspective projection distortion correct the distorted image, whose resolution is 640x480, as 22.52ms per frame, so the proposed system satisfies the real-time property.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2004.05a
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• pp.170-170
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• 2004

박막의 접착강도를 측정하기 위하여 수직력과 수평력을 동시에 측정할 수 있는 0.1∼100 N 용량의 2축 로드셀에 기반을 둔 스크레치 테스터를 개발하였다. 반도체용 Si wafer 기판 위에 Au나 Al 등의 금속이 관은 박막으로 증착된 제품을 table에 고정시킨 후, 2축 로드셀(x, z)이 장착된 하중센서의 선단에 Diamond Tip을 장착하여 기판과 박막에 하중(z-axis)을 증가시키면서 동시에 wafer를 x축 방향으로 이동시킨다. 이런 방식으로 시료의 표면을 긁으면 박막이 벗겨져 나가 Diamond Tip이 기판에 닿을 때 서로 다른 경도차에 의해 진동이 발생하게 되고, 이 진동을 Acoustic Emission 센서에서 감지하여 Crack 발생 시점의 Load와 Stroke를 찾아내게 된다.(중략)

• Journal of the Korea Furniture Society
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• v.12 no.1
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• pp.57-67
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• 2001

This paper considers Wedding Furniture(new furniture that brides prepare for marriage) design in Korea. Social survey research methods were applied to study wedding furniture from 1960 to 1990. A questionnaires were delivered to 766 urban housewives. As to the statistical methods of the study, descriptive analysis for frequencies, and $X^2-test$ were selectively performed using SPSS PC+ program. the findings are as follows; During this period, Wedding Furniture became an essential Honsu(혼수: wedding gift) item People choose as Wedding Furnitures that serve basic functions of furniture and are traditionally symbols of wedding. They were increased both quantity and quality. Typical Wedding Furnitures of the Modern time were Jangrong(장농: wardrobe for storing clothes and bed clothes), dressing table, wardrobe chest, cupboard and bed. Wedding Furniture items have become more various in kind. Criteria for selecting Wedding Furniture were functionality, affordability, fashion, and decorativeness, tradition and symbolic of marriage. but, The symbolic importance of Wedding Furniture as Honsu will be weakened with the introduction of a variety of electronic appliances.

• Journal of the Korean Society for Precision Engineering
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• v.15 no.7
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• pp.18-25
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• 1998

A prototyping process based on the technique of selective ${\CO_2}$ laser sintering has been carried out using bronze powder. The integration of a ${\CO_2}$ laser and a working table to create the opto-mechanical system has been constructed for making the multi-layer sintering. Three dimensional rapid prototyping process which has used the 40W ${\CO_2}$ laser and bronze powder has been investigated experimentally The optimal scanning method has been found to minimize the deflection and distortion by using the thermal strain method which the laser scans in the x and v directions repeatedly. The method of spreading powder has been improved by using the rubber knife of which the flexibility causes less wave of spreading powder.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2019.06a
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• pp.178-181
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• 2019

포인트 클라우드 콘텐츠는 3D 포인트 집합으로 이루어진 3D 데이터로, 일반적으로 3D 포인트 클라우드는 하나의 객체를 표현하기 위하여 수십, 수백만 개의 3차원 포인트(Point) 데이터가 필요하며, 각 포인트 데이터는 3차원 좌표계의 (x, y, z)좌표와 포인트의 색(color), 반사율(reflectance), 법선벡터(normal) 등과 같은 속성(attribute)으로 구성되어 있다. 따라서 기존 2D영상보다 한 단계 높은 차원과 다양한 속성으로 구성된 포인트 클라우드를 사용자에게 제공하기 위해서는 고효율의 인코딩/디코딩 기술 연구가 필요하며, 다양한 대역폭, 장치 및 관심 영역에 따라 차별화된 서비스를 제공하기 위한 품질 확장성 기능의 개발이 요구된다. 이에 본 논문에서는 포인트 클라우드 압축에 사용되는 V-PCC에서 3차원 미디어인 포인트 클라우드의 3D 공간 내 포인트 간의 밀도를 변경하여, 새로운 품질 변화를 달성하고 비트전송률 변경을 추가 지원하는 방법을 제시하였다.

• Horticultural Science & Technology
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• v.29 no.5
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• pp.507-509
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• 2011

'Heukisul' (3x) a cross made in 2000 between 'Kyoho' (4x, Vitis sp.) and 'Thompson Seedless' (2x, Vitis vinifera L.) in a seedless grape breeding program, was preliminarily selected in 2004. After regional adaptation testing under the name of 'KTS014' at two sites during 2004-2005, it was finally selected in 2006. 'Heukisul' showed low incidence of berry shattering, resulting in a good berry set compared to 'King Dela'. 'Heukisul' had budburst on April 23, flowering on in June 9, and fruit maturation in September 29 (almost the same as 'King Dela' at Chuncheon), and it was considered a midseason cultivar. The mean berry weight was 4.0 g, about 0.7 g heavier than 'King Dela', and mean soluble solids were $21.9\;^{\circ}Brix$, about $2.7\;^{\circ}Brix$ higher than 'King Dela'. The skin color was dark violet with abundant bloom and the flesh was very firm. Although the cluster was compact, it required no cluster thinning. Also the incidence of berry cracking was very low.

• Magazine of the Korean Society of Agricultural Engineers
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• v.28 no.3
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• pp.89-98
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• 1986

This study was carried out for the settlement and camber of earth dam by the changes of the density. The testing material was taken five kinds of Soil used as banking material and it was compacted by 100, 95, 90, 85 and 80% compaction degree. The results of the settlement of earth dam whose height ranges from 10m to 50m are as follows. 1.The more the fine particle (n) increases, the higher the liquid limit (WL) and the lower the dry density (rd) becomes as follows; rd=2. 22-0. 0052n (gr/cm$_3$) rd=2. 394-0. 0164WL rd=2. 185-(5. 8n-2. 5WL)X10-$_3$ 2. The higher the optimum moisture content (Wo) becomes, the lower the density becomes as follows; rt,=2. 68-0. 028Wo rd=2. 578-0. 04Wo 3. 3.Most of the consolidation occurs immediately by loading and the more the fine particle increases, the lower the coefficient of consolidation becomes. 4.The more the fine particle increases and lower the compaction degree (D) becomes,the lower the pre-consolidation load (Pc) becomes but on the contrary the compression index (Cc) becomes higher. Those equation is as follows. Pc=3. 32-(4. 3n-3. 0D) X10-2 (kg/cm$^2$) Cc=0. 41+(1. 33n-4. 44D) X10-$^3$ 5.The more the consolidation load (P) increases, the lower the coefficient of volume change (mv) becomes with mv=ap-b, the higher the consolidation ratio (u) becomes with U= (0. 6~1. 35)PO.4 6.The more the fine particle (n) increases, the more the settlement of dam occurs with U=anb and 60-80% of the settlement occurs under construction. 7.The camber of dam has higher value in condition that has more fine particle, poorer compaction and higher height of dam. In the dam construction about twice value of table 7 is required for dam safety.

• The Korean Journal of Nuclear Medicine Technology
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• v.16 no.2
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• pp.156-161
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• 2012

Purpose : IRMA method for the experimental reagents, as set out in the manual settings for doing and reporting the test results should, in principle. But many of the reagents allows for the setting of the plot does not have a lot of information. Depending on the angle setting of the table make a difference in test results and what settings are best suited to investigate. Materials and Methods : The hospital has Boramae DREAM10, Cobra, SR-300's using the Immunotech TSH reagents have been compared with the measurements. Since then there using EXCEL calculation of the equipment compared with the measurement. Results : In the comparison between each piece of equipment 1.SR-300: DREAM 10 y = 1.1376x - 0.046 (LOG-LOGIT), 2.SR-300: COBRA y = 1.0985x + 0.042 (LOG-LOG) 3.DREAM10: COBRA y = 0.965x + 0.0887 (LOG-LOG) was the result. In all charts the same X, Y axis, X values were good in general when you have. Linear-Logit value of Cobra Dream10 and Excel tends to match the calculated values provided. Conclusion : Is to guide the B / max, B / Total Logit Y axis of the chart is set to draw a look at the value equation when the X-axis LOG a high concentration are disadvantages rising urgently toward the slope. Linear-Logit plots close to the straight line has a curve. If you have a chart to guide on setting AS setting and therefore, set to guide the absence of information on the need to set up the experiment are thought to pass through.

• Journal of the Korean Association of Geographic Information Studies
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• v.2 no.2
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• pp.45-58
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• 1999

Digital map is utilized for an effective display of the distributions of the hydrogeological variables such as water table height(hydraulic head) and log-transmissivity(lnT) in north Pohang, KyungBug. Specifically the geostatistical method kriging is used to construct the distributions in an unconfined aquifer from a finite set of measured data. The experimental variograms for both the head and lnT suggest spherical models with nugget of 0 and range of 6km. The kriged results by using these variograms show that the head decreases primarily from the west to the east with a large peak in the north-western part and lnT is at the maximum level in the central part with outwardly decreasing trend. The constructed delineation is also used to calculate the flow field in the region. Finite differences with second order consistency are used to calculate the fluxes in the east(x) and north(y) across a vertical cross-section of unit width and height equal to the thickness of the wet zone in the aquifer. It is demonstrated that the flow is dominantly in the east with diverging trend on the eastern hillside of the water table peak. A few convergent spots also appear.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.5 no.1
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• pp.51-56
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• 1969

Fourty lines of F4 progenies of an Adzuki bean cross, Jukdoo (Korean local variety) X Nesumimochi (Japanese variety) were used as the material, and these lines were grown in replicated trials in 1967. Phenotypic, genotypic and environmental covariances among all possible traits of eight character are calculated as shown in table 1. Phenotypic, genotypic and environmental correlations among all possible paris of eight characters were calculated as shown in table 2. In general, genotypic correlations were higher than the corresponding phenotypic corresponding phenotypic correlations. The genotypic correlations between seed yield (grain weight per plot) and oter agronomic characters indicated that seed yield was genetically associated with the character of pod number per plant, and grain number per plant, which is closely correlated with pod number pr plant, are affected more in Adzukl bean yield than the other agronomic characteracters.