http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
지역의 특화산업에 관한 연구 : 이론적 접근을 중심으로
임형섭 전남대학교 지역개발연구소 1996 지역개발연구 Vol.28 No.1
Fostering of the regional specialized industries is presented to a counterproposal for cancellation of the regional disequilibrium development problem that it is derived from economic growth process in Korea. Also, at the same time as enforcing of local self-government system, concern of the regional specialized industries those reflect to economic and location condition have raised. But, if each region insist upon the specialized industries selection and location so far regional condition is not considered, new problem relate to regional economics would be derived. Therefore, first of all, the selection of the true specialized industries reflecting to speciality of the regional economic structure is needed. Many research paper related to the selection have announced. However, it is not so vigorous as intention of regional economic activition. This paper present theoretically to a synthesis method of regional specialized industries selection bring on the stable growth of regional economics. This paper suggest as follows. (1) The Regional specialized industries are redefined at the synthetical side as follow ; comparative advantage industry at the competitive, efficiency, spread effect, long-run base power, stability side. (2) Economic effect of the regional specialization lead to directly cost reduction and high productivity through a wide agglomeration effect. At the same time, it is contribute to the regional economic growth, regional employment enlargement, regional economic stability. (3) New criterion and method, but existing papers have not treated, must be considered in the selection of the regional specialized industries. First, the regional specialized industries must take the character of long-run basic sector in the regional economics. This is caused by that regional basic sector employment must maintain long-run equilibrium relation with regional gross employment. Unit root test and cointegration test are used to this analysis method. Second, the regional specialized industries must contribute to the stable structure of regional economics. This is caused by that the optimal specialized industries have to satisfy simultaneously the growth and stability of regional economics. However, the empirical analysis on the basis of this paper require to many data and regulation. Also, upbringing of the regional specialized industries require to practical policy of the center and local government.
Implant Survival Rates of Maxillary Sinus Augmentation: a Literature Review of Graft Materials
임형섭,김수관,오지수,Lim, Hyoung-Sup,Kim, Su-Gwan,Oh, Ji-Su Korean Association of Maxillofacial Plastic and Re 2010 Maxillofacial Plastic Reconstructive Surgery Vol.32 No.4
Purpose: By reviewing literature on the subject, we compared the survival rate of implants placed in various graft materials used for maxillary sinus augmentation. Materials and Methods: The search protocol used the Pubmed electronic database, with a time limit from 1998 to 2009. Keywords such as 'sinus lift,' 'sinus augmentation,' 'sinus floor elevation,' 'sinus graft,' 'bone graft,' 'implants,' 'oral implants,' and 'dental implants' were used, alone and in combination, to search the database. We selected articles and divided them into three groups by type of graft materials: Group 1. Autogenous bone group: autogenous bone alone; Group 2. Combined bone group: autogenous bone in combination with bone substitutes; and Group 3. Substitute group: bone substitutes alone or bone substitute combinations. Results: We selected 37 articles concerning a total of 2,257 patients and 7,282 implants; 417 implants failed. The total implant survival rate (ISR, %) was 94.3%. In Group 1, 761 patients and 2,644 implants were studied; 179 implants failed and the ISR was 93.2%. In Group 2, 583 patients and 1,931 implants were studied; 126 implants failed and the ISR was 93.5%. In Group 3, 823 patients and 2,707 implants were studied; 112 implants failed and the ISR was 95.9%. Conclusion: Implants inserted in grafts composed of bone substitutes alone or in grafts composed of autogenous bone in combination with bone substitutes may achieve survival rates better than those for implants using autogenous bone alone (P<0.05).