• Clean Technology
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• v.24 no.2
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• pp.105-111
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• 2018

This study presents a novel and eco-friendly process that can precisely control the location of the patches on the patch particles. The method of manufacturing these anisotropic hexagram patch particles consists of sequential combinations of two separate methods such as a sequential micromolding technique for fabricating patch particles and a selective localization method for controlling the location of patches on the patch particles. The micromolding technique was carried out using physicochemically stable material as a micromold. In order to fabricate the highly stable patch anisotropic hexagram particles, the perfluoropolyether (PFPE) micromold was used to the process of the micromolding technique because they could prevent the problem of diffusion of hydrophobic monomers while conventional poly(dimethylsiloxane) (PDMS) micromold is limited to prevent the problem of diffusion of hydrophobic monomers. Based on combination methods of the micromolding technique and the selective localization method, the reproducibility and stability have been improved to fabricate 12 different types of anisotropic hexagram patch particles. This fabrication method shows the unique advantages in eco-friend condition, easy and fast fabrication due to less number of process, the feasibility of a mass production. We believe that these anisotropic hexagram patch particles can be widely utilized to the field of the directional self-assembly.

• Journal of Digital Convergence
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• v.14 no.9
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• pp.423-429
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• 2016

Character customization means a series of processes to build a characters. Mobile character customizing system is very scarce than Online RPG system qualitatively or quantitatively. In this paper, I will propose some effective elements about A DIY character system that must be suitable for the mobile environment system. The reasons why Select System is mainly used as the customizing system in RPG are as follows; First, the screen of a mobile device is small; Second, it is due to the space-time characteristics with which mobile games are played. In the middle of playing a game, a customizing system should be adopted in order for players not to feel bored. In addition, avatar's costumes should be continually updated.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.1
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• pp.12-18
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• 2009

In this paper, for reducing the assembly torque of subminiature plastic barrel and base which are the essential parts of mobile phone camera module, the high-precision system for inspecting the screw shape of core, electrode and injection molding products was developed. For realization of inspection process, the inspection parameters for evaluating the manufacturing quality were selected and the measurement methods of selected parameters were developed. Finally, the inspection system which is possible to be applied to the field were fabricated.

• 제어로봇시스템학회:학술대회논문집
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• 1986.10a
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• pp.431-436
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• 1986

The design and manufacture of injection molded polymeic parts with desired mechanical properties is a costly process dominated by empiricism, including the modification of actual tooling. This paper presents an interactive computer-based design system for injection molded plastic parts. This knowledge-based synthesis system provides a rational design strategy for injection molding and molded parts. It synergistically combines a rule-based expert system for hurestic knowledge with analytical process simulation programs. The theremomechanical properties of a molded part such as the effect of molecular orientation and weldline strength are predicted by the analysis programs; while the expert system interprets the analytical results from the process simulation, evaluates the design, and generates recommendations for optimal design alternatives. The heuristic knowledge of injection molding is formalized as production rules of the expert consultation system.

• Journal of Korean Medicine for Obesity Research
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• v.7 no.1
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• pp.107-115
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• 2007

This report is to introduce a specific acupuncture methods as a cosmetic treatment. I applied wu-xing(五行) acupuncture technique to 11 patients for smooth out skin wrinkles. There were visual improvement of patients' facial skin. This methods cuts SMAS, stimulates dermis, and helps to recover skin volume and generate new dermal tissue by wound-healing mechanism.

• 제어로봇시스템학회:학술대회논문집
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• 1987.10b
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• pp.537-540
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• 1987

항공기가 평형상태로 비행하는 도중 돌풍과 같은 외부교란을 만난 교란상태운동은 선형화된 미분방정식으로 표현되며 비교적 짧은 비행시간동안의 비행은 선형시 불변계가 된다. 돌풍은 Gauss-Markov확률과정으로 모델링 되며, 항공기가 돌풍을 만난 교란상태운동은 시스템론적으로 보면 백색잡음이 성형필터를 거쳐 계에 입력되는 것과 같다. 초기의 설계방법은 고전적인 주파수영역에서의 해석방법을 사용하였으나 1960년대에 최적제어이론이 도입되면서 평가함수를 사용하여 원하는 비행특성을 얻는 방법을 사용하게 되었다. 그 후 계에 입력되는 외란과 측정시의 잡음으로 인한 불확실한 측정량으로부터 최적상태변수의 추정을 위해 필터링이론을 도입한 확률제어이론을 적용하여 자동조종장치를 설계하게 되었다. 이때까지는 연속제어계로 설계되었으며 그 후 측정신호를 샘플링하여 연속제어계와 등가의 이산제어계를 사용한 자동조종장치가 등장하였으며 이 경우 설계기법으로는 연속제어계를 사용하고 실현시킬 때는 디지털컴퓨터를 사용하였다. 이는 제어하는 동안 계의 계수와 제어법칙을 바꾸어 줄 수 있는 이산제어계의 장점을 이용하지 못하므로 처음부터 계를 등가의 이산계로 보고 제어계를 설계하는 방법이 도입되었다. 이 때 샘플링간격의 결정과 Quantization 영향이 설계시 고려되어야 한다.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06c
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• pp.115-120
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• 2008

유비쿼터스 컴퓨팅에서의 플랫폼 기술은 상황인지(context-awareness) 기술과 재구성형 네트워킹(reconfiguration networking) 기술이 융합되어 가면서 병행하여 발전되고 있으며 최근에는 이종간의 다른 리소스를 가지고 있는 모바일 플랫폼간의 자율적인 공유를 통한 보다 큰 개념의 유비쿼토스 서비스가 제공 되고 있다. 본 논문은 사용자의 선호도를 고려한 서비스 기술과 서비스 추론 기술을 제안한다. 특히 본 논문에서는 데이터마이닝 기법을 이용하여 사용자 선호도에 기반한 서비스를 제공한다. 본 논문은 상황인지 시스템에서 온톨로지를 활용한 고도화된 서비스 추론 엔진과 함께 데이터마이닝기법을 이용하여 사용자의 과거 이력 분석을 통해 최적의 서비스등 다른 분야의 방법들을 함께 결합시킴으로서 상황 인지 시스템에서의 새로운 사용자 선호도 기반 서비스 패러다임을 제공하는 것을 목적으로한다.

• Proceedings of the Korea Society for Simulation Conference
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• 2001.05a
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• pp.88-95
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• 2001

VR(Virtual Reality)의 개념이 제조공학 분야로 확대 적용되면서 설계분야에서의 가상조형 (Virtual Prototyping), 제조분야에서의 가상제조시스템(Virtual Manufacturing System)이라는 새로운 형태의 제조 시스템 및 설계기술이 차세대 제조기술로서 발전해 오고있으며 이런 가상제조방법(Virtual Manufacturing)은 컴퓨터를 이용하며 생산과정에서 제품뿐만이 아니라 유한요소해석을 유용하여, 공정까지도 모의실험을 하며 생산성(manufacturability), 최종 형태(final shape), 잔류 응력(residual stress), 제품 수명 주기(life-cycle)등과 같은 요소들의 최적화 정보를 제공하게 된다. 본 연구에서는 이러한 가상제조방법을 구현하기 위한 기초적 단계로서 가상단조기계를 가상현실기법을 이용하여 모델링하고 Java를 이용하여 모델링된 단조기계를 제어하고 제조되는 단조물에 대한 내부 응력 및 형태변환을 유한 요소법을 이용하여 분석하고 분석된 단조물의 자료를 WEB상을 통하여 닥 수 있게 유한 요소 해석결과를 VRML언어로 변환하는 작업을 수행하였다.

• Design & Manufacturing
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• v.15 no.2
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• pp.17-22
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• 2021

The shape of the blank greatly affects the formability and quality of the product after the stamping process. In this study, the geometry of the B-Pillar blank in the stamping process was optimized using design of experiments. The geometry of the blank for the B-pillar was simplified with the two length values and two radius values. The effects of design variables were studied through the Design of experiments. The stamping process of the B-pillar was predicted with the Finite Element Analysis (FEA). The optimized blank geometry was obtained. It results in the reduced maximum equivalent plastic strain. The local necking and the wrinkling did not occurred with the optimized blank geometry.

• Proceedings of the IEEK Conference
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• 2003.07d
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• pp.1657-1660
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• 2003

7 This paper offer to the system for the hierarchical face plastic surgery using of 3D models. For the system, Make hierarchical plastic object of facial 3D models, and special appointment setting of plastic object. In order to give variaty to a scale, type, angle, position of plastic object that developed plastic surgery solution. It is possible to plastic surgery that harmonize with plastic objects, solution, vector by selected user.