• Proceedings of the Korean Fiber Society Conference
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• 2003.04a
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• pp.83-86
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• 2003

최근 들어 poly(trimethylene terephthalate)(PTT)를 다른 고분자와 블렌딩시켜 특성 변화를 검토한 논문이 많이 발표되고 있는데 PTT와 블렌딩하는 고분자는 주로 PET와 같은 Poly(alkylene terephthalate)계 고분자들이다[1,2]. 나프탈렌환을 갖는 Poly(alkylene naphthalate)계 고분자를 PTT와 블렌딩한 연구는 PTT/poly(ethylene naphthalate)(PEN) 블렌드계[3] 정도가 보고되고 있으며, PTT를 다른 나프탈렌계 고분자와 블렌딩한 연구 결과는 거의 없는 실정이다. (중략)

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.571-574
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• 2023

애니메이션은 주어진 키프레임(key frame)에 맞추어 움직이기 때문에, 다른 객체와 상호작용할 때 상대편 물체의 위치나 방향을 애니메이션에 맞추어 변환해야 한다. 이 논문에서는 모방학습으로 애니메이션을 학습하고, 모션 블렌딩(motion blending) 기법으로 객체 간 상호작용을 학습하여 새로운 애니메이션을 생성하는 방법을 제안한다. 에이전트(agent)는 오브젝트의 상태를 관측하고 주어진 모션들을 블렌딩하는 방법으로 다양한 행동을 취하고 목적에 대한 보상을 받는다. 에이전트가 행동하는 과정에서 모션 블렌딩 비율에 대한 가중치를 계산하는 함수를 설계하고, 생성되는 애니메이션이 사람이 취할 수 있는 동작에 가깝도록 회전 각도 clamping 함수와 보상 시스템을 설계하여 반영한다. 모방학습 기반 모션 블렌딩 기법은 객체의 변화에 상호작용하는 애니메이션을 기존 강화학습 기반 애니메이션 생성 기법보다 적은 학습량으로 생성할 수 있음을 확인했다.

• Journal of Korea Multimedia Society
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• v.14 no.2
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• pp.201-209
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• 2011

This paper suggests a panorama image stitching system which consists of an image matching algorithm: modified SURF (Speeded Up Robust Feature) and an image blending algorithm: multi-band blending. In this paper, first, Modified SURF is described and SURF is compared with SIFT (Scale Invariant Feature Transform), which also gives the reason why modified SURF is chosen instead of SIFT. Then, multi-band blending is described, Lastly, the structure of a panorama image stitching system is suggested and evaluated by experiments, which includes stitching quality test and time cost experiment. According to the experiments, the proposed system can make the stitching seam invisible and get a perfect panorama for large image data, In addition, it is faster than the sift based stitching system.

• Journal of the Korea Computer Graphics Society
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• v.13 no.1
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• pp.1-6
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• 2007

Although free-form surfaces can represent smooth shapes with only a few control points contrary to polygonal meshes, graphics hardware does not support surface rendering currently. Since modern programmable graphics pipeline can be used to accelerate various kinds of existing graphics algorithms, this paper presents a method that utilizes the graphics processing unit (GPU) to render blending surfaces with arbitrary topology fast. Surface parameters sampled on the control mesh and geometric data for local surfaces are sent to the graphics pipeline, and then the vertex processor evaluates the surface positions and normals with these data. This method can achieve very high performance rather than CPU-based rendering.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2019.06a
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• pp.231-233
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• 2019

본 논문에서는 다시점 영상과 스테레오 매칭을 수행하여 얻은 깊이 정보를 통해 가상시점을 합성할 때 적용되는 블렌딩 기법을 제안한다. 다시점 영상에서 스테레오 매칭으로 얻을 수 있는 깊이정보는 물체와 배경의 경계부분에서 큰 오차를 갖는다. 이러한 이유로 원본 시점들의 영상을 깊이정보를 통해 특정 가상시점으로 워핑할 때 물체의 경계 부분에 배경의 화소가 일부 포함되는 문제가 발생한다. 이 문제는 워핑된 영상들을 블렌딩하여 하나로 합성 시 영상의 품질에 영향을 주는 요인이 된다. 본 논문에서 제안하는 방법은 깊이정보와 함께 영상의 수퍼픽셀 분할에서 얻은 정보를 이용하여 블렌딩 대상이 되는 영상에 화소 단위로 가중치를 부여하여 해당 문제의 영향을 완화한다.

• Journal of Digital Convergence
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• v.10 no.9
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• pp.333-338
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• 2012

This paper is related to a skinny smudge blending method using the arbitrary-shaped master adhered closely to the contour shape. The smudge tool is the popular graphic tool embedded in Adobe Photoshop CS6. The smudge tool is used to smear paint on your canvas. The effect is much like finger painting. We can use the smudge tool by selecting its icon on the toolbox of Adobe Photoshop CS6 and dragging in the direction you want to smudge while holding the mouse button down on the image. As the smudge tool blends all the pixels within a radius of the master to generate the result image, its disadvantages are to smudge even the pixels in the undesired region. In this paper to reduce the disadvantage, the skinny smudge blending method using arbitrary-shaped master is proposed. The proposed blending method has the advantage of applying the smudge effect to the desired regions regardless of the background as the arbitrary-shaped master adhered closely to the contour shape is extracted by color image segmentation.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2012.05a
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• pp.100-103
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• 2012

The blending method that is an addition of small quantity of fuel was used to increase the performance of green propellant thruster. 90 wt.% hydrogen peroxide as a green propellant was selected, and ethanol was used as a blended fuel. The o/f ratio was chosen as 50 which has higher theoretical performance than 98 wt.% hydrogen peroxide. The chamber temperature of blended hydrogen peroxide was higher than adiabatic chamber temperature of hydrogen peroxide. Therefore, performance can be improved by ethanol blending. Several catalyst and its support were compared to find appropriate catalyst for decomposition and combustion of ethanol blended hydrogen peroxide. As a experimental results, Pt was suitable, but $MnO_2$ had a chamber instability when it was reused. The ${\alpha}-Al_2O_3$ which is high heat-resistant support showed very unstable performance in both Pt and $MnO_2$ catalyst since it has low decomposition performance.

• Food Science and Preservation
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• v.24 no.3
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• pp.472-482
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• 2017

To improve functionality and palatability of Korean Campbell Early wine. Campbell Early and aronia were fermented by either individually or at 5:5 (v/v) mixed culture of Saccharomyces cerevisiae Fermivin and Pichia anomala JK04. Blending was carried out using those two wines with different mixing ratio. Antioxidant activity analysis and sensory evaluation of blending wines were conducted. The Campbell Early wine and aronia wine blended with 9:1 (v/v) ratio showed excellent antioxidant activity and sensory scores. Total anthocyanin compound, DPPH radical scavenging activity and total phenolic compound of blending wines were higher than those of Campbell Early wine (control). Hue and intensity values increased in the order of A, B, C and D, E, F depending on P. anomala JK04 use. Anonia wine contributed the increase in a and b values of blending wine. Although blending wines fermented by P. anomala JK04 increased small amounts of aldehyde and acid compound, ester compound, the most important factor for wine aroma was also increased sharply. Adding aronia wine fermented by single culture of P. anomala JK04 (A, D) got higher color, taste, sourness and overall preference scores than other wines in the sensory evaluation. All of blending wines showed higher flavor scores than control did. This research shows a possibility of blending and utilizing non-Saccharomyces yeast for Korean wine industry.

• Korean Journal of Clinical Laboratory Science
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• v.49 no.3
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• pp.256-262
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• 2017

Essential oil from herb is known to exert pharmacological effects on the human body. In this study we investigated the antibacterial activity of 4 essential oils (teetree, rosemary, melisa, and lavender), as well as the blended mixture oil of teetree, rosemary, and melisa (TRM) on three bacteria, Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. Antibacterial analysis was performed using the standard disk diffusion method, and minimum inhibition concentration was determined by the broth microdilution method with different concentrations of essential oils (0.5, 1, 2 and 3 mg/mL). After incubation at $37^{\circ}C$ for 24 h, the antibacterial activity was assessed by measuring the zone of growth inhibition surrounding the disks. Herb oil with the inhibition zones showed varied values ranging from6 to 25 mm. However, the components of herb oil of TRM are as highly active as the teetree oil against pathogens, generating large inhibition zones for both gram negative and positive bacteria (13~22 mm and 8 mm inhibition zones). In the analysis for MIC, TRM showed growth-inhibitory effects at 0.0625% for S. aureus and E. coli, and 1.25% for P. aeruginosa. This result demonstrated that the anti-microbial activity of TRM was greater than a single herb oil, including oxacillin, rosemary, and teetrea. As a single herb oil, both rosemary and teetrea also had an anti-microbial effect by itself, and we can expect that the blended oil mixture may exert a synergistic effect against multidrug resistant bacteria, suggesting its future application in natural preservative agents for health food and cosmetics.

• Journal of the Korean Society of Propulsion Engineers
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• v.16 no.5
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• pp.20-28
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• 2012

Blending method was applied to increase the performance of hydrogen peroxide which is called green propellant. 90 wt.% hydrogen peroxide was blended with ethanol which is less toxic fuel, and there was no storability decrease due to fuel addition. Inconel X750 and Tophet A showed good compatibility and high heat resistance, and SUS 316L was compatible. $Al_2O_3$, $Y_2O_3$, and $ZrO_2$, were coated on the material to improve heat resistance, and it was proved from endurance test that $Y_2O_3$ coating is not suitable and adhesive strength between coating and material is related with allowable temperature of material. Thruster test was performed to confirm the performance increase by blending method, and chamber temperature was $870^{\circ}C$ which is higher than $760^{\circ}C$ that is adiabatic chamber temperature of 90 wt.% hydrogen peroxide.