• 원예과학기술지
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• 제33권1호
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• pp.149-154
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• 2015

신품종 Phalaenopsis 'SM 333'은 2002년 상미원에서 Phalaenopsis 'Odoriko'와 Phalaenopsis 'Be Tris'를 모부본으로 인공교배하여 육성한 $F_1$ 개체 중에서 선발한 핑크 소형 다화 분지성이다. 2003년부터 2004년까지 2년에 걸쳐 실생 300개체를 양성하여 이들 중에서 영양생장과 개화특성이 우수한 개체 02-03-33을 선발하였다. 2004년과 2005년에 1차, 2차 특성검정을 통하여 품종의 안정성과 균일성을 확인하고 'SM 333'으로 명명하였다. 'SM 333'은 화색이 화사하고 선명한 핑크(RP69D)이며, 화형은 앉아피기로 안정되어 있다. 꽃의 길이와 폭은 각각 5.0, 5.8cm로 소형이다. 복총상화서로 볼륨이 있으며 소형 캐주얼분화에 적합하다. 잎의 길이와 폭은 각각 20.8, 6.5cm이며 엽형은 수평이다. 기내증식율이 높고 변이가 거의 없으며 영양생장 우수하여 재배관리가 용이하다. 2009년 12월 1일 품종등록(등록번호 제2916호)하여 종자산업법에 의해 보호받고 있다.

• 한국CDE학회논문집
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• 제16권1호
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• pp.1-10
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• 2011

In this paper, we propose an AR-based tangible interaction using a finger fixture for virtual evaluation of digital handheld products. To realize tangible interaction between a user and a product in a computer-vision based AR environment, we uses two types of tangible objects: a product-type object and a finger fixture. The product-type object is used to acquire the position and orientation of the product, and the finger fixture is used to recognize the position of a finger tip. The two objects are fabricated by RP technology and AR markers are attached to them. The finger fixture is designed to satisfy various requirements with an ultimate goal that the user holding the finger fixture in his or her index finger can create HMI events by touching specified regions (buttons or sliders) of the product-type object with the finger tip. By assessing the accuracy of the proposed interaction, we have found that it can be applied to a wide variety of digital handheld products whose button size is not less than 6 mm. After performing the design evaluation of several handheld products using the proposed AR-based tangible interaction, we received highly encouraging feedback from users since the proposed interaction is intuitive and tangible enough to provide a feeling like manipulating products with human hands.

• 한국해양공학회지
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• 제31권3호
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• pp.233-240
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• 2017

Subsea structures are always vulnerable to accidental risks induced by fishing gear, dropped objects, etc. This paper presents the design of a subsea manifold protective structure that protects against dropped object impacts. Probable dropped object scenarios were established considering the shapes and masses of the dropped objects. A design layout for the manifold protective structure was proposed, with detailed scantlings and material specifications. A method applicable to the pipelines specified in DNV-RP-F107(DNV, 2010) was applied to calculate the annual probabilities of dropped objects hitting the subsea manifold. Nonlinear finite element analyses provided the structural consequences due to the dropped object impacts such as the maximum deflections of the protective structure and the local fracture occurrences. A user-subroutine to implement the three-dimensional fracture strain surface was used to determine whether local fractures occur. The proposed protective structure was shown to withstand the dropped object impact loads in terms of the maximum deflections, even though local fractures could induce accelerated corrosion.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2008년도 학술대회 1부
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• pp.55-58
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• 2008

산업 제품을 디자인하는 디자이너들은 CAD(Computer Aided Design)과 같은 방법을 사용하여 새로운 디자인을 만들어내고, 이를 적용한 가상의 3D 모델을 통해 살펴본다. 이 방법은 직접 손으로 도면을 그리고 단순히 한쪽 면만 살펴볼 수 있었던 기존의 방법에 비해서 컴퓨터로 인한 자동화와 다양한 각도에서 제품에 적용된 새로운 디자인을 살펴봄으로써 시간과 비용을 절감할 수 있다. 이에 우리는 앞서 언급한 디자인 방법에 Augmented Reality와 Rapid Prototyping의 개념을 더해 현실적이고 인터랙티브한 산업제품의 디자인 방법을 고안하였다. 이것은 스티로폼과 같은 재질로 만들어진 mockup을 조립하여 만들고, 3D 모델의 컬러, 재질, 버튼 등의 인터페이스 요소와 실제 제품을 조작하는 것과 같은 인터랙티브한 요소들을 적용시킴으로써 제품을 디자인할 수 있는 증강현실기반 시스템이다.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 1997년도 춘계학술대회 논문집
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• pp.150-155
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• 1997

Rapid Prototyping(RP) is the technique which is used to make prototypes or functional parts directly using the 3-D solid data. Before building the prototype, several processes such as transfering 3D data from CAD system(STL) determination of build-direction, adding support structure and slicing are required. Among the above processes. determination of build-direction is the target of this study. The build direction is determined by many factors according to the objective of the user, like part accuracy, number of support structure, build time, amount of trapped volume, etc, But it is not easy to determine the build-direction because there are many factors and some factors have dependent properties with one another. So, in this study the part accuracy, the number of support structures and build time are considered as the main factor to determine the optimal build-direction. To determine the optimal build-direction for increasing part accuracy, sum of projected area which caused stairstepping effect was considered. The less the projected area is the better part accuracy is About the optimal build-direction to minimize the amount of support structure, sum of projected area of facets that require support structures was considered. About the build time, we considered the minimum height of part we intended. About the build time, we considered the minimun height of part we intended to make.

• Natural Product Sciences
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• 제17권4호
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• pp.337-341
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• 2011

An HPLC (high-performance liquid chromatography)-PDA (photodiode array) detection method was established for the determination of naringin, hesperidin and neohesperidin in the fruit of Citrus paradisi and C. grandis. The flavonoids were separated in less than 20 min using an YMC RP 18 column with isocratic elution using acetonitrile and water (23 : 77, v/v) at a flow rate of 1 ml/min, and a PDA detector. The levels of naringin, hesperidin and neohesperidin were 1345.92, 950.62, and 2078.82 ${\mu}g/g$, respectively, in the peel, and 102.43, 59.13, and 86.68 ${\mu}g/g$, respectively, in the flesh of C. paradisi. In C. grandis, the levels of naringin, hesperidin and neohesperidin were 3530.56, 80.00, and 5.26 ${\mu}g/g$, respectively, in the peel, and 59.59, 7.43, and 38.41 ${\mu}g/g$, respectively, in the flesh. The total content was highest in the peel, reaching 0.44% and 0.36% in C. paradisi and C. grandis, respectively, while the flesh contained only 0.025% and 0.011%, respectively. Therefore, the peels of C. paradisi and C. grandis are necessary for the processing and utilization of flavonoids.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.2175-2178
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• 2005

Selective Laser Sintering(SLS) method is one of Rapid Prototyping(RP) technologies. It has been used to fabricate desirable part to sinter powder and stack the fabricated layer. Since the sintering process occurs using infrared laser having high thermal energy, shrinkage and curling of the fabricated part occurs according to thermal distribution. Therefore, the fast scanning path generation is necessary to eliminate the factors of quality deterioration. In case of fabricating larger size parts, the unique scanning device and scanning path generation should be considered. In this paper, the development of SLS machines being capable of large size fabrication(800${\times}$1000${\times}$800 mm, W${\times}$D${\times}$H) will be addressed. The dual laser system and the unique scanning device have been designed and built, which employ CO2 lasers and dynamic 3-axis scanners. The developed system allows scanning a larger planar surface with the desired laser spot size. Also, to generate the fast scanning paths, adaptive path generation is needed with respect to the shape of each layer, and not simply x, y scanning, but the scanning of arbitrary direction should be enabled. To evaluate the suggested method, the complex part will be used for the experiment fabrication.

• 융합보안논문지
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• 제7권1호
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• pp.35-43
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• 2007

본 연구에서는 센서 네트워크 기반의 컴퓨팅 기술이 혼합된, 생체 신호 측정 시스템을 제안한다. 지그비 RF 기술과 임베디드 하드웨어 기술의 조합을 통하여, 병원의 환자관리 센터는 환자들의 비상 상황 또는 일상 상태에 관한 정보를 개별적으로 또는 동시에 수신함으로서, 환자의 정상적인 생활 보조 및 응급 상황에 신속히 대처할 수 있다. 또한 제안된 시스템의 저전력 및 기타 요구 사항을 만족시키기 위하여 지그비 기반의 RF를 사용한다. 이는 제안된 호출 시스템의 성능을 향상시키기 위하여 최적의 선택이라 할 수 있다.

• 한국정밀공학회지
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• 제19권3호
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• pp.152-159
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• 2002

SLA (Stereolithography Apparatus) it a process used to rapidly produce polymer components directly from a computer representation of the part. Though SLA is being recognized as an innovative technology, it still cannot be used to fully practical application since it lacks of dimensional accuracy compared to conventional process. If the shrinkage were perfectly uniform and no distortion took place, excellent part accuracy could still be achieved through and appropriate scaling factor when generating the build file. However, in certain geometries involving intersecting thick and thin sections, nonuniform retrain shrinkage becomes the engine of part distortion. In order to improve the part accuracy of SLA, this paper evaluates how largely each parameter of SLA contributes to the part accuracy and estimates the optimal set of parameter which minimizes the dimension error of the test part, "Slab (100mm$\times$100mm$\times$2mm)"and "scale bar"part. Three control parameters such as critical exposure, generation depth and fill cure depth are used.

• Ocean and Polar Research
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• 제36권3호
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• pp.247-254
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• 2014

In our continuing study on the antioxidant activity of Polysiphonia stricta, its crude extract was fractionated into n-hexane, 85% aqueous methanol (85% aq.MeOH), n-butanol (n-BuOH), and water fractions according to solvent polarity. The solvent fractions were evaluated for their potential to inhibit lipid peroxidation and reactive oxygen species (ROS) production in HT 1080 cells. The n-BuOH fraction most strongly inhibited both lipid peroxidation and ROS production in HT 1080 cells. The n-BuOH fraction was further separated by repeated silica gel column chromatography and RP-HPLC to give methyl aconitates (2 and 3). The chemical structure of isolated compounds was determinated by NMR spectral analysis.