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오재화,김우혁,최웅 朝鮮大學校 建設技術硏究所 2004 建設技術硏究 Vol.24 No.2
Recently, cities are to be a new limelight in developing countries. Because, They have performed important roles in promoting and spreading economic and social development of the country. This study is concerned with all cities in Korea, and has three main purposes. First one is to select the general analysis variables affecting urban growth from existing theoretical literatures. Second one is to identify the dominant factors and their changes for the growth of cities in Korea through the analysis of correlation with growth rate. It could be done by case study of growth trends of all existing cities for analysis period. The last one is to find out a formula to estimate the future growth of cities in Korea. The results of this study could offer much suggestions to establish the development strategies of cities in Korea.
조현이,정종철,김호성,최재욱,성대경,서지훈,김성범,이계혁 大韓顎顔面成形再建外科學會 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.1
Osteosarcoma is a primary malignant tumor arising most often in the long bone, but rare in jaw bone. Especially osteogenic sarcoma of the mandible is a rare tumor, comprising less than 0.5% of all head and neck tumors. Osteosarcoma occurs cheifly in young persons, and presenting very survival rates. Histopathologically this tumor can be classified three types, osteoblastic, fibroblastic, chondroblastic and classified from low grade to high grade by anaplasia or mitosis of the tumor cells. Sometimes, the exact diagnosis of osteosarcoma is difficult especially in low grade osteosarcoma, even if clinical or radiographical findings suggest to osteosarcoma. So suspcious to malignant bone tumor in clinical or radiological findings, biopsy should be taked from deep portion and multiple area, and sharing the patient history and radiographs with pathologist will assist in the development of the diagnosis. We report a case of low grade osteosarcoma on the mandible initially difficulty in accurate diagnosis. The patient visited our hospital for routine dental treatment but radiographic findings displayed ill-defined radiolucency with osteoid formation on the mandible. Final diagnosis was difficulty in initial biopsy but subsequent biopsy taked from deep portion presented infiltrative growth and mitosis of the tumor cell in some area with small osteoid bone formation, so we could reach final diagnosis as low grade sarcoma. We treated this patient with bloc resection of the mandible and immediate reconstruction with iliac corticocancellous block.
An Integrated Account of Phonological Weakening Processes in English within Optimality Theory
Jae hyeok Choi 한국영어학학회 2015 영어학연구 Vol.21 No.1
The analysis of weakening phenomena may vary according to the theory you adopt and the language you choose, but in this study, vowel reduction and consonant lenition in the history of English will be explored in a constraint-based approach. In addition, most importantly, I seek to show which generalisations can equally be applied to both consonant lenition and vowel reduction in terms of a phonological theory. In this regard, I suggest a unified theoretic account of weakening phenomena involving the combination of two approaches namely Element Theory (e.g., Harris 1994, Backley 2011) and Optimality Theory (Prince and Smolensky 1993), which differentiates this account from previous analyses. I argue that the *COMPLEX[Element] constraint family, where 'element' refers to one of the primitives of Element Theory, plays a central role in analysing phonological weakening processes in English. In addition, it will be shown that both consonant lenition and vowel reduction can be accounted for within the constraint interaction between positional faithfulness constraints such as IDENT[Element] and the integrated constraint *COMPLEX[Element] which I propose.
Jae Hyeok Choi,Woo Yeol Baek 대한두개안면성형외과학회 2022 Archives of Craniofacial Surgery Vol.23 No.5
Post-traumatic enophthalmos and hypoglobus are common sequelae of facial bone fractures, even after reduction surgery. They are associated with functional and esthetic issues, which may lower the quality of life. These deformities frequently present late, and adequate correction is difficult. We report three cases of late inferior orbital rim reconstructions with three-dimensional printed implants to help resolve these problems. The average duration between the traumatic event and surgery was 3 years and 4 months. One patient was treated with a completely absorbable implant and exhibited satisfactory results until the implant started to biodegrade at 1 year and 9 months after surgery. Two patients were treated with a permanent implant and demonstrated satisfactory results. However, longer follow-up periods were needed. There were no complications such as infection, diplopia, or restriction of ocular motion and the patients were satisfied with the esthetic results.