• 제어로봇시스템학회논문지
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• 제15권11호
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• pp.1080-1087
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• 2009

This paper presents an algorithm to acquire 3D geometric information using a virtual plane method. The method to measure 3D information on the plane is easy, because it's not concerning value on the z-axis. A plane can be made by arbitrary three points in the 3D space, so the algorithm is able to make a number of virtual planes from feature points on the target object. In this case, these geometric relations between the origin of each virtual plane and the origin of the target object coordinates should be expressed as known homogeneous matrices. To include this idea, the algorithm could induce simple matrix formula which is only concerning unknown geometric relation between the origin of target object and the origin of camera coordinates. Therefore, it's more fast and simple than other methods. For achieving the proposed method, a regular pin-hole camera model and a perspective projection matrix which is defined by a geometric relation between each coordinate system is used. In the final part of this paper, we demonstrate the techniques for a variety of applications, including measurements in industrial parts and known patches images.

• 한국의류산업학회지
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• 제11권4호
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• pp.556-565
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• 2009

This study investigates the effect of Alpha-numeric brand name on the product suitability, brand personality, and attitude. To do that we have chosen the functional sportswear, knowing the fact that the Alpha-numeric brand names are not hard to find in this industry. The changes have been made to Alpha-numeric names, such as the usage/non-usage of number, the size of number being used, the writing method, and the different typeface to suit for the study purpose. The results indicate that the Alpha-numeric brand names do have the effect on increasing the fitness for the product's brand. The bigger number and the cursive script will improve the product's suitability. The customers form positive attitude and favorability on the Alpha-numeric brand name compared to the regular brand name in this industry. The contribution of the study is to dig out the distinction of the communicational effects on the customers when the Alpha-numeric brand names take on the different forms. Therefore the current study enlights the practical value of Alpha-numeric brand name as part of the branding strategy.

• Journal of Electrical Engineering and Technology
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• 제10권4호
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• pp.1759-1764
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• 2015

Glow corona is a kind of streamer-free corona that can suppress upward leaders in transmission lines. Thus, it has good application potential in lightning protection. This paper investigates its corona characteristics. The suppression characteristic of glow corona on streamer is studied in air gap under negative DC voltage by wrapping thin wires on the electrode. The effect of thin wire winding patterns on the gap breakdown voltage is analyzed. Results are considered to be attributed to the inception condition of glow corona. Thus an inception test of glow corona is also conducted, and the inception voltage is obtained. Results show that the inception voltage decreases with short winding pitch. Thus an investigation on the inception of glow corona influenced by thin wire is conducted, and an influential factor is proposed to evaluate the influence. The inception regular of thin wire glow corona presented in this paper has certain reference value for the application of glow corona in transmission lines.

• 한국염색가공학회지
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• 제31권4호
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• pp.312-322
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• 2019

The mechanical properties of developed fabrics which were composed of soluble yarns and stretch fibers were analyzed using the Kawabata Evaluation System. The following findings were obtained from this investigation. Fabrics woven with lightweight yarns can be easily deformed by external forces. But when the fabric were woven using thick lightweight yarns reduced the slippage between the fibers, which makes it difficult to deform due to external force, thereby maintaining a certain space from the human body. As for the weight of the fabric per unit thickness, it was found that fabrics were compose of lightweight spun yarn was lightweight relatively. Lightweight yarns were more flexible than regular yarns because of the reduced bending and shear properties that greatly affect the lattice pattern. smoother, more flexible, and the better the bend was recovered. As fabrics increased content of using of lightweight spun yarn was increased flexible and smooth, and bending recovery.

• 한국콘텐츠학회논문지
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• 제11권12호
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• pp.112-121
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• 2011

운동이 신체적, 정신적 건강에 긍정적인 영향을 미친다는 것은 수많은 연구를 통해 일반적인 상식이 되었다. 그리고 규칙적인 운동은 체지방 감소와 혈중지질을 감소시켜 비만을 조절하며, 궁극적으로 인간의 삶의 질을 향상시킨다고 보고되어 있다. 본 연구에서는 선행연구를 통해 수영운동치료 관리를 위한 지표들을 도출하였으며, Fuzzy ANP(Analytic Network Process) 기법을 이용하여 지표들간의 상관관계를 모델링하여 가중치를 측정하였다. 측정된 결과를 가지고, 공간 제약 없이 개인별 맞춤 운동처방을 실시간으로 알려주도록 설계 하였다. 그리고 휴대폰, 스마트폰, 노트북 등 모바일 장치를 통해 실시간으로 질환자별 맞춤 관리가 이루어질 수 있도록 환자관리시스템을 구현하고자 한다.

• Ocean Systems Engineering
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• 제1권4호
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• pp.355-372
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• 2011

Based on the fully nonlinear velocity potential theory, the liquid sloshing in a three dimensional tank under random excitation is studied. The governing Laplace equation with fully nonlinear boundary conditions on the moving free surface is solved using the indirect desingularized boundary integral equation method (DBIEM). The fourth-order predictor-corrector Adams-Bashforth-Moulton scheme (ABM4) and mixed Eulerian-Lagrangian (MEL) method are used for the time-stepping integration of the free surface boundary conditions. A smoothing scheme, B-spline curve, is applied to both the longitudinal and transverse directions of the tank to eliminate the possible saw-tooth instabilities. When the tank is undergoing one dimensional regular motion of small amplitude, the calculated results are found to be in very good agreement with linear analytical solution. In the simulation, the normal standing waves, travelling waves and bores are observed. The extensive calculation has been made for the tank undergoing specified random oscillation. The nonlinear effect of random sloshing wave is studied and the effect of peak frequency used for the generation of random oscillation is investigated. It is found that, even as the peak value of spectrum for oscillation becomes smaller, the maximum wave elevation on the side wall becomes bigger when the peak frequency is closer to the natural frequency.

• 정보관리학회지
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• 제21권4호
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• pp.173-185
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• 2004

정보통신의 기술이 발달하면서 정보의 양이 많아지고 사용자의 질의에 대한 검색 결과 리스트도 많이 추출되므로 빠르고 고품질의 문서 클러스터링 알고리즘이 중요한 역할을 하고 있다. 많은 논문들이 계층적 클러스터링 방법을 이용하여 좋은 성능을 보이지만 시간이 많이 소요된다. 반면 K-means 알고리즘은 시간 복잡도를 줄일 수 있는 방법이다. 본 논문에서는 계층적 클러스터링 시스템인 콘도르(Condor) 시스템에서 간단하고 고품질이며 효율적으로 정보 검색 할 수 있도록 구현하였다. 이 시스템은 K-Means Algorithm을 이용하였으며 클러스터 계층 깊이와 초기값을 조절하여 $88\%$의 정확율을 보였다.

• 유통과학연구
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• 제13권11호
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• pp.15-22
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• 2015

Purpose - This study aims to propose and validate a research model that describes the relationships between customer socialization, customer participation, and customer loyalty in the online service industry. Although customer loyalty is frequently discussed topic in marketing and strategy research, this study takes a novel approach in adopting customer socialization and participation as the antecedents to customer loyalty. Research design, data, and methodology - Based on adopting and modifying measurement items of the constructs from previous studies, this study develops survey regarding the constructs within the proposed research model. Among current registered members of Facebook and DaumKakao, 522 college students and other regular users are selected as the samples for conducting the survey. The collected data is analyzed by structural equation modeling method using SPSS and AMOS. Results Proposed hypotheses of the positive relationships - between customer socialization and customer participation, and between customer participation and customer loyalty are all supported. Conclusions - The results of this study suggest customer participation as an important precursor to customer loyalty in the online service industry. Also, customer socialization is validated as a new strategy to increase customer participation. These results validate the practical importance of communicating mission, purpose, value, and other customer socialization activities that firms undertake.

• 한국콘텐츠학회논문지
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• 제7권8호
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• pp.163-173
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• 2007

Need 나 want 시대를 지난 지금의 시대적 상황을 Feeling 시대라고 용어를 정리 하면서, 소비자 심리와 행동, 사회 문화적 변용을 근거로 한 의미 작용을 분석하였다. 이를 근거로 하여 $\sqrt{3}$비례를 기준으로 한 정삼각형의 기본조형을 얻어 유통, 판매, 할 수 있는 상품의 실질적 조형에 접근하였고, 상품 사용 후 여러 가지 형태로 다변화 할 수 있는 유희성과 재활용적 조형을 구축하였다. 이는 탈 코드화된 패키지조형의 창조라는 점에 큰 의미를 갖는다. 또 패키지 조형의 물리적, 기능적 가치뿐만 아니라 심리적 사회문화적 해석의 기능과 소비자의 정체성이 교감될 수 있도록 적절한 조형적 기호(semiotics)가 연구되어졌다.

• 한국전기전자재료학회논문지
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• 제15권3호
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• pp.258-263
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• 2002

We present a new toed phosphor, $Gd_{2-x-y}Li_xEu_yO_3$ with superior luminescent Properties compared to the commercially available red phosphor $Y_2O_3:Eu^{3+}$. The phosphor, with a diameter of about $2\mu\textrm{m}$, consists of the psedospherical particles in a regular array. The photoluminescence measurements as a function of the laser power and the Eu mole fraction were performed at zoom temperature The luminescence intensity linearly increases as both the laser power and the Eu mole fraction Increase. As for the dependence on cathodoluminescence, the incorporation of Eu and Li ions into $Gd_2O_3$ lattice brings about an increase in luminescent efficiency. The highest emission intensity for the phosphor occurs at the applied voltage of 500 V, its value is larger than that of $Y_2O_3:Eu^{3+}$ powder by 70%.