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김진순,김판욱,김태균,정우희 충남대학교 1992 論文集 Vol.15 No.1
The purpose of this study was to develop curriculum for the technical teacher education for newly planned College of Industrial Education of Chungnam National University to meet industrial technology progress in Korea. In order to achieve the purpose, the study investigated recent technological changes of industry and newly revised curriculum of technical high schools. The result of the study are summerized as follows: 1) For the general subjects the suggested curriculum consisted of 48 credits in 9 areas according to Chungnam National University regulation for general subjects. 2) For the professional subjects the suggested curriculum consisted of 20 credits in 10 subjects through slightly modification of governmental regulation for professional subjects. 3) For the technical subjects the suggested curriculum consisted of 80 credits, which ratio of required subjects to elective subjects is 50:50. And over 20 credits were alloted to practice, experiment and drafting are in order to strengthen practical competence. 4) The total credits of the curriculum consisted of 160 credits including 12 credits of general elective subjects. 5) The students taking minor course should complete over 21 credits (9 credits for required and 12 credits for elective) in minor course technical subjects within total 160 credits.
Short-term, Multi-center Prospective Clinical Study of Short Implants Measuring Less Than 7mm
Kim, Young-Kyun,Yi, Yang-Jin,Kim, Su-Gwan,Cho, Yong-Seok,Yang, Choon-Mo,Liang, Po-Chin,Chen, Yu-Yal,I, Lee-Long,Sim, Christopher,Tan, Winston,Ser, Go Wee,Yue, Deng,Yi, Man,Ping, Gong Korean Academy of Dental Science 2010 Journal of korean dental science Vol.3 No.1
Objective : This prospective study sought to verify the stability of three types of short implants measuring 7mm or less. Materials and methods : Implants measuring 7mm or less were placed in patients at multicenter dental clinics in Korea, China, Taiwan, and Singapore. Initial stability, intraoperative and postoperative complications, crestal bone loss, and survival rate of the implant were prospectively evaluated. Results : The primary stability of a 6-mm implant was lower than that of a 7-mm implant. The marginal bone loss of short implants measuring less than 7mm was minimal. Complications such as wound dehiscence, implant mobility, and peri-implant mucositis developed, and these were associated with initial implant failure. The short-term survival rate of 6-mm implant was 93.7%, and that of 7-mm implant, 96.6%. Conclusion : Short implant for the mandible with insufficient height for the residual ridge can be selectively used. Poor primary stability and wound dehiscence can cause osseointegration failure and alveolar bone loss.
Kim, Do Kyun,Wong, Eileen Wee Chin,Cho, Nak-Kyun The Society of Naval Architects of Korea 2020 International Journal of Naval Architecture and Oc Vol.12 No.-
A reliable and cost-effective technique for the development of corrosion damage model is introduced to predict nonlinear time-dependent corrosion wastage of steel structures. A detailed explanation on how to propose a generalised mathematical formulation of the corrosion model is investigated in this paper (Part I), and verification and application of the developed method are covered in the following paper (Part II) by adopting corrosion data of a ship's ballast tank structure. In this study, probabilistic approaches including statistical analysis were applied to select the best fit probability density function (PDF) for the measured corrosion data. The sub-parameters of selected PDF, e.g., the largest extreme value distribution consisting of scale, and shape parameters, can be formulated as a function of time using curve fitting method. The proposed technique to formulate the refined time-dependent corrosion wastage model (TDCWM) will be useful for engineers as it provides an easy and accurate prediction of the 1) starting time of corrosion, 2) remaining life of the structure, and 3) nonlinear corrosion damage amount over time. In addition, the obtained outcome can be utilised for the development of simplified engineering software shown in Appendix B.
Short-term, Multi-center Prospective Clinical Study of Short Implants Measuring Less Than 7mm
Young-Kyun Kim,Yang-Jin Yi,Su-Gwan Kim,Yong-Seok Cho,Choon-Mo Yang,Po-Chin Liang,Yu-Yal Chen,Lee-Long I,Christopher Sim,Winston Tan,Go Wee Ser,Deng Yue,Man Yi,Gong Ping 대한치의학회 2010 Journal of korean dental science Vol.3 No.1
위암환자에서 복부 임파절 전이에 대한 초음파검사 및 전산화 단층촬영의 진단적 의의
김석균(Seok Kyun Kim),현인영(In Young Hyun),차중직(Joong Jik Cha),홍원선(Weon Seon Hong),이진오(Jhin Oh Lee),강태웅(Tae Woong Kang),백남선(Nam Sun Paik),김기환(Kie Hwan Kim),진수일(Soo Yil Chin) 대한내과학회 1990 대한내과학회지 Vol.39 No.2
N/A Preoperative findings of abdominal ultrasonography (US) and computed tomography (CT) were compared with the postoperative findings with special emphasis on abdominal lymphnode (LN) metastasis in patients with stomach cancer. The 98 patients' enrolled in this study had no evidence of LN and distant metastasis in preoperative abdominal US or CT and underwent operation from January, 1988 to December, 1988 in the Department of General Surgery III, Korea Cancer Center Hospital. Sixty-two (63%) of the 98 patients were confirmed to have LN metastasis in the postoperative pathologic examination: 62%, in 50 patients without LN metastasis in preoperative US and 65%, in 48 patients without LN metastasis in preoperative CT. The senstivity of US was similar to that of CT in predicting LN metastasis. We analyzed the effects of age, sex, abdominal pain, performance status, Borrmann type and size of the tumor on the predictability of LN metastasis, demonstrating that no significant relation- ship was found between these factors and LN metastasis except for the size of the tumor. In patients with a tumor less than 2 cm in diameter, LN metastasis was found in 25%(N1, N2, 0%); in 2-4 cm, 53% (N1, 47%, N2, 6%); in 4-6 cm, 79%(N1 62%, N2 17%); in 6-8 cm, 92% (N1 84%, N2 8%); in more than 8 cm, 839p (N1 66%, N2 17%). The incidence of early gastric cancer (EGC), diagnosed by postoperative pathologic findings, was significantly higher in small-sized tumors compared to the large-sized tumors (p<0.01): in less than 2 cm, 0%. Staging of stomach cancer was performed according to TNM staging grouping approved by UICC and AJC in 1985. The stage showed a progress with the increase in size of the tumor (p<0.01). In less than 2 cm, stage I, II, III and IV were 68, 7, 25and 0%, respectively. In 2-4 cm, stage I, II, IIIand IV were 26, 18.53and 3%, respectively. In 4-6 cm, stage I, II, IIIand IV were 8, 16, 56and 20%, respectively. In 6-H cm, stage I, II, IIIand IV were 0, 15, 75and 15%, respectively. In more than 8 cm, stage I, II, IIIand IV were 0, 0, 50and 50%, respectively. These results suggest that abdominal LN metastasis can not be predicted by US or CT alone. However, dy the addition of size of the tumor to US or CT findings, the predictability of LY, metastasis can be significantly increased in stomach cancer patients.
김중경,김한균,민경조,한성진 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1
This paper presents a new magneto-thermal finite element analysis for predicting the temperature rise of the EHV GIS bus bar. The power losses of a bus bar calculated by the magnetic field analysis are used as the input data to predict the temperature rise for the thermal analysis. The heat-transfer coefficients on the boundaries are analytically calculated by applying the Nusselt number considering material constant and model geometry for the natural convection. The temperature distribution in a bus bar by coupled magneto-thermal finite element analysis shows good agreement with the experimental data.