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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.
Thermally stable AgCu alloy disc array for near infrared filters
임형섭,심기백,성태연 한국물리학회 2020 Current Applied Physics Vol.20 No.12
We investigated the thermal and optical characteristics of AgCu alloy disc (250 and 380 nm in diameter) arrays to produce an optical filter with low near infrared (NIR) transmittance, and compared their properties with those of Ag disc array. Unlike the Ag discs, the AgCu discs remained relatively stable with hillocks after annealing at 500 ◦C. The Ag and AgCu disc samples had similar transmittance characteristics, showing a global minimum at ~767 nm (for the 250 nm-disc samples) and at ~1081 nm (for the 380 nm-disc samples). Based on finitedifference time-domain (FDTD) simulations, the global minimum was related to localised surface plasmon resonance (LSPR). The Maxwell-Garnett model was employed to interpret the red-shift of the transmittance minima. The calculations showed that a mixture of agglomerated and stable Ag discs, resulting in different n and k values, would be responsible for the red-shift and an increase in the minimum transmittance.
골유도재생술 시 비탈회 동종골와 우심막유래 차단막의 임상적 활용
임형섭,김수관,문성용,오지수,정경인,박진주,정미애,Lim, Hyoung-Sup,Kim, Su-Gwan,Moon, Seong-Yong,Oh, Ji-Su,Jeong, Kyung-In,Park, Jin-Ju,Jeong, Mi-Ae 대한악안면성형재건외과학회 2011 Maxillofacial Plastic Reconstructive Surgery Vol.33 No.4
Purpose: This study evaluated the clinical applications of implant placement and guided bone regeneration using a mineralized bone allograft and a barrier membrane derived from ox pericardium Methods: From January 2007 to June 2009, among the patients who received an implant at Chosun University Dental Hospital, patients were selected if they were treated with guided bone regeneration (GBR) with simultaneous implant placement or GBR prior to implant placement. The selected patients were sorted according to the materials and membranes used in GBR, and the implant survival rate was recorded by clinical examination and reviewing the medical records and the radiographs. Each study list was analyzed by SPSS (version 12.0, SPSS Inc., USA) software and the survival rate was verified by Chi-square tests. $P$ values less than 0.05% were deemed significant. Results: 278 implants were placed on a total of 101 patients and 8 implants resulted in failure. Three implants failed among 15 implants with only a mineralized bone allograft. No failure was shown among the 74 implants placed with mineralized bone allograft and a barrier membrane derived from ox pericardium. One group of 4 implant placements showed failure among the 102 implants placed with a mineralized bone allograft and another bone graft material. The group that had a barrier membrane derived from ox pericardium with a mineralized bone allograft or other bone materials showed no implant failure. Three failures were shown among the 21 implants placed with only bone graft and not using a membrane. The group with membranes other than a barrier membrane derived from ox pericardium showed 5 failures among 170 implants. Conclusion: The implant survival rate of the group with GBR using a mineralized bone allograft was 96.3%, which meant there was little difference compared to the groups of another bone graft materials (98.9%). The implant survival rate of the group without a membrane-was 85.7% and it showed a significant difference compared to the group using a barrier membrane derived from ox pericardium (100%) and the group using another membrane (97.1%).