http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
치과용 연석고가 골조직재생에 미치는 영향에 관한 실험적 연구
최장우,Choi, Jang-Woo 대한악안면성형재건외과학회 1998 Maxillofacial Plastic Reconstructive Surgery Vol.20 No.3
Calcium sulfate(plaster of Paris) has been used in dental and orthopedic surgery for about 100 years. It is well known that the plaster is bioresorbable, biocompatible, defect conformable and moldable. The purpose of this study is to evaluate two effects of calcium sulfate on bone regeneration, that is, the effects of graft materials and barrier for bone regeneration. Cortical bone defects were formed for recipient site on the femurs of 19 Sprague-Dawley rats. The autogenous particulated bone and calcium sulfate were grafted to the defects. Calcium sulfate paste, $Gore-Tex^R$ membrane(W.L. GORE & ASSOCIATES LTD., U.S.A.) and rubber sheet were used for the shielding materials. The results were as follows : 1. Calcium sulfate that had been grafted in the cortical bone defect was almost resorbed before bone remodeling, resultantly had little effect on bone regeneration. 2. Resoption process of calcium sulfate grafted on the bone grafting area tends to be accelerated, as being divided into numerous small particles progressively. Under the situation where the calcium sulfate was protected, with the coverage of fascia, $Gore-Tex^R$ membrane or rubber sheet, new bone formation was confirmed with presence of calcium sulfate particles over 6 weeks after grafting. 3. In the case of calcium sulfate covered with membrane, distinct bone formation was observed on the marrow space of femur adjacent to the plaster mass. 4. Rubber shielded plaster group revealed new bone trabeculae under the rubber sheet, but it showed ischemic degeneration of superficial cortical bone.
Jang Woo Choi(崔長雨),Hideaki Nagura(名倉英明),Shoji Enomoto(榎,本昭二) 대한구강악안면외과학회 1990 대한구강악안면외과학회지 Vol.16 No.4
The dentofacial deformities associated with cleft lip and/or palate generally represent various kinds of midfacial underdevelopments, and require surgical intervention appropriate for each natures. The purpose of this study is to reveal the problems on treatment of secondary dentofacial deformities associated with cleft lip and/or palate, and to introduce basic study with experimentally created cleft alveolus and palate monkeys.
최장우(Jang-Woo Choi) 한국관세학회 2009 관세학회지 Vol.10 No.4
The signatories to WTO Government Procurement Agreement(GPA) reached an agreement on the legal text renewal at the end of 2006. Apart from this multilateral effort, a growing number of countries liberalize their government procurement through regional or bilateral trade agreements giving rise to a new global governance landscape on public procurement. This paper attempted to show the structural grid of new regime and reviewed the effect of WTO GPA on international trade along with an in-depth comparison of current and future legal text of this public market access agreement. It also examined, in a comparative way, those free trade agreements and exposed differences on critical issues such as degree of market liberalization, procedural rigidity, favorable treatment on less developed countries, concession contract or BTO, etc.. The disparities on trade agreements and the emerging trend shed some lights on the future course of development on public procurement as well as which strategy we should take on this matter. This study suggested implications on some policy directions.
최장우(Choi Jang-Woo) 한국관세학회 2006 관세학회지 Vol.7 No.1
The Korean government has introduced a special customs clearance management system in January,2005 to effectively respond a possible illegal clearance through the global electronic commerce and conflicts among interested persons surrounding uncertainty on the subject of tax payers, according to a continuous increase of import of the goods transacted in the overseas internet shopping mall. This makes a fast clearance of electronic commerce goods possible and protects interests of domestic consumers, and expands the atmosphere of expansion of e-commerce. However, there are still some problems to settle this system down and to be acted as a method to facilitate the global e-commerce. Therefore, this study tried to suggest some political directions for expanding global B2C e-commerce through the exploratory research on the current special clearance system for e-commerce goods.
최장우(Choi Jang-Woo) 한국관세학회 2005 관세학회지 Vol.6 No.1
There is some different views between importing firms and administrative government in Korea whether transportation-related cost of the imported goods such as pilotage and tug-boat charge should be included in the taxable value or not. Based on the results of the analysis of one recent dispute case, the transportation related costs should be included in the calculating factor of taxable value of imported goods if the incurred cost is occurred before the actual unloading of the goods at the destination port is not prepared (it means the actual NOR Tender). Also, one important result of this study is that the legal meaning of up to the point of importation and the timing and place of the unloading of the imported goods from the ship becomes evident. It is expected that this will be much helpful to lessen the conflicts between trading firms and the government for the interpretation of above-mentioned legal disputes.
최장우(Jang-Woo Choi),정재화(Jae-Hwa Jeong) 한국관세학회 2008 관세학회지 Vol.9 No.4
The objective of this paper is to compare the tariff elimination schedules of Korea-Chile FTA and China-Chile FTA and to analyze the effect of China-Chile FTA on the competitive condition of Koreand products in Chilean market. Even though China-Chile FTA went into effect later than Korea-Chile FTA, due to the relatively early elimination of Chilean tariff on Chinese products, it is found that higher tariff rates are imposed on Korean products in average. As a result, some Korean products like automatic washing machine, vacuum cleaner, plastics, etc. are losing their market shares to the Chinese competitors. It is highly recommended that when concluding an FTA, the government should try to reach as high level of liberalization as possible to avoid being surpassed by the other FTAs that are concluded after it.