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흉추 및 요추의 골절및 탈구에 대한 Zielke 장치 척추경 고정술의 결과
김형순,정재윤,정고훈 대한골절학회 1990 대한골절학회지 Vol.3 No.2
For the evaluation of the clinical and radiological results of transpedicular Zielke instrumentation for the fractures and dislocations in the thoracic and lumbar spine, the authors analysed the 13 patients who were operated by that method and were followed up more than one year after operation(Av. 33 months). l. Operative indications were seat belt type, flexion-distraction injury of fracture-dislocation type and burst type that needed additional stabilization after anterior fusion. 2. Extent of fixation and fusion were 1 motion segment in 6, 2 motion segment in 7. 3. Bony union could be observed within 6 months in all, without any possible complications of metal failure, non-union, loss of correction or neural damage. 4. Kyphotic angular deformity were changed from 25 preoperatively, to 3 post- operatively and 5 at the end of follow up 5. anterior vertebral height in 6 burst type were 46% preoperatively, 77% post operatively and 74% at the and of follow up. From above results, the authors concluded that the transpedicular Zielke instrumentation enabled the fixation of shortest segments and provided enough stability when the method was applied in the types of injury that demand posterior compression for the reduction and stabilization of the deformity and instability.
Policy Analysis on Resolving Digital Divide in Rural Areas
김형순,이은영 한국정보기술학회 2010 한국정보기술학회논문지 Vol.8 No.4
As the result of a series of network advancement projects for the last few decades, the network infrastructure of Korea is much faster than those of other advanced countries. The data transmission rate of rural areas, however, still remains low, though it is possible for subscribers to access the Internet. It leads to the situation where various convergence services cannot be used in rural areas, unlike in metropolitan cities or in small and medium sized cities. The digital divide between cities and rural areas will emerge as a social issue. Since 2010 the Korean government has been conducting a project for establishing BcN in rural areas where it is not likely for private service providers to voluntarily invest for the network infrastructure. In this paper, we discuss the BcN establishment project to provide high-speed network infrastructure and convergence services such as IPTV, VoIP, and u-Health to rural areas. We also estimate the expected impacts and make suggestions for successful deployment.