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Multimedia System의 사용자 인터페이스에 관한 연구
정지홍 同德女子大學校 1995 同大論叢 Vol.25 No.1
The purpose of this paper is on Multimedia based user interface. At first, the background of the user interface continuum are discussed and command-line interface, menu driven interface graphical user interface and object-oriented user interface. I surveying method of the Visual shape, animation and sound. With Multimedia, things should look move, and sound like they work, and they should work like look, move and sound! It can make better help define and distinguish how Multimedia based user interface works with the various human sensory mechanisms.
집속형 레이저 유도 초음파를 이용한 박판에서의 결함 검출
정지홍,김홍준,장경영 한국비파괴검사학회 2003 학술대회 논문집 Vol.- No.1
An are array slit is used for generating the focused Lamb wave by laser, where spatially expanded Nd:YAG pulse laser is illuminated through the are array slit on the surface of a sample plate to generate the Lamb wave of the same pattern as the slit. Then the generated Lamb wave is focused at the focal point of which distance from the slit position is dependent on the curvature of slit arc. The focusing effect enables to acquire higher intensity of wave at the focus, better SNR in the received signal, and improved spatial resolution than when we use the conventional line array slit. In order to show the usefulness of the proposed method, experiments is carried out for the detection of the artificial linear and circular defects on a thin aluminum plate and proposed quantitative analysis of the defect size.
膈下逐瘀湯과 淸胞逐瘀湯의 抗炎症, 解熱, 鎭痛, 抗菌 抗血栓 效果
鄭址弘,宋炳基 慶熙大學校 1986 論文集 Vol.15 No.-
The present work was done lo investigate the effectiveness of Kyo˘khach'ugotang and Ch'o˘ngp'och'ugotang, known to cure female genital disease caused by extravasated blood. The extracted powder of those two prescription were administered to experimental animals and effects on anti-inflammatory, anti-pyretic, analgesic, anti-microbial and anti-thrombose action were observed. The results obtained in this wort were summarized as follows: 1. The extracted powder the mixture of each extracted powder of Kyo˘khach'ugotang and Ch'o˘ngp'och'ugotang showed more significant anti-inflammatory effect than control group. 2. The extracted powder and the mixture of each extracted powder of both prescriptions showed more significant anti-pyretic effect than control group. 3. Significant analgesic effect was recognized in the extracted powder and the mixture of each extracted powder of both prescriptions. Especially, the extracted powder of Kyo˘khach'ugotang showed more significant effect than another. 4. Upon the degree of concentration of FDP, the extracted powder, the mixture of each extracted powder of Kyo˘khach'ugotang and the extracted powder of Ch'o˘ngp'och'ugotang showed significant effect of rupture of extravasated blood. 5. Anti-microbial effect of both prescriptions against Staphylococcus aureus, Bacillus subtilis was observed, especially in the Staphylococcus aureus was remarkable in the effect. It is thought to be valuable on the therapy of pyogenic stapylococcal inflammation. By the above results, anti-inflammatory, anti-pyretic, analgesic, anti-microbial and anti-thrombose action were recognized, and by comparison of both prescriptions, Kyo˘khach'ugotang showed siginficant effect on the analgesic action, the degree of concentration of FDP and Ch'o˘ngp'och'ugotang was remarkable anti-pyretic effect but others were not any marked difference. In addition to the above resultls, the extracted powders of Kyo˘khach'ugotang and Ch'o˘ngp'och'ugotang showed better effects, than the mixture of each extracted powders, but not remakable significant.
Focus - 일본의 전력소매 시장 전면자유화와 시사점
정지홍,Jeong, Ji-Hong 대한석유협회 2016 석유와 에너지 Vol.301 No.-
올 4월 일본의 전력소매 시장이 전면 자유화됐다. 자유화 이전에는 전국 10개 전력회사가 각자 지역에 대해 전력 공급을 독점하였기 때문에, 주택용 전력 소비자가 다른 전력사의 전기를 구입하는 건 불가능했다. 하지만 현재에는 소비자가 자유롭게 전력회사를 선택할 수 있다. 전면자유화 이후 가장 눈에 띄는 변화는 전력소매 사업자 증가, 다양한 요금제 출시 및 새로운 결합상품의 등장이다.
3D printing inorganic-organic hybrids for bone repair
정지홍 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.1
Inorganic-organic class II hybrids have two different phases that form inter-penetrating networks via covalent bonding. This fine interaction provides opportunity to fabricate materials in bottom-up approach, which allows control over their physical and biological properties. In previous studies, various polymer-SiO2 hybrids were fabricated with well-defined polymers for bone regeneration. However, it is challenging to produce hybrids with controlled porous architectures with pore inter-connects, which is essential for vascularization and cell transportations. Here, printability of inorganic-organic hybrids were investigated. Polymer source was introduced to silica network via sol-gel process. The hybrid 'sol' was 3D printed to grid-like pattern which resembled trabecular bone structure. Additionally, we explored potential of the hybrid scaffolds as bone substitute material.