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풍력발전기 너셀에 장착된 풍속계를 이용한 출력성능 평가
김수상 ( Soo Sang Kim ),박세광 ( Se Kwang Park ) 한국센서학회 2012 센서학회지 Vol.21 No.4
We carried out the power performance evaluation for 1.5 MW×2 by using anemometer installed on WTGS(Wind Turbine Generator System) in the wind farm at Shi-hwa bang-a-mu-ri. In this paper, we compared and analyzed the performance of guaranteed output and measured output of WTGS which includes output curve, output coefficient, AEP(Annual Energy Product) and availability, etc.. The power performance of WTGS was optimized in the low wind speed sections(3 m/s ~ 10 m/s) and the measured output was more produced by AEP 109 % and availability 112 % than the guaranteed output. In addition, we could also cut the high cost of testing WTGS performance by using anemometer as a substitute for weather mast.
김수상(Soosang Park),박도현(Dohyeun Park),박순조(Soonjo Park) 한국자동차공학회 2002 한국자동차공학회 Symposium Vol.2002 No.11
In this paper, a passenger air bag(PAB) folding method using finite element analysis was suggested. As PAB is<br/> more complex in shape than other airbags, generally it takes much time and efforts than others and requires highly<br/> skilled experience to get folded finite element model. Fully folded PAB finite element model was achieved by<br/> performing the continuous series of simulations. So, Anyone without skilled experience in air bag folding process<br/> can get folded PAB easily by following the process. It can save time in PAB folding process and decrease errors in<br/> PAB deployment simulation, and is expected to contribute to the development of advanced air bag which has to<br/> consider out of position (OOP) situation.
胃癌 1,265例에 對한 統計的 考察 : 胃內視鏡 檢査例
金秀祥,李相彩,丁泰勳,鄭俊謨,鄭克守 慶北大學校 醫科大學 1979 慶北醫大誌 Vol.20 No.1
1968年 1月부터 1978年 8月까지 約 10年間 慶北醫大 消火器內科 胃鏡室에서 實施된 總 7000例의 胃內視鏡檢査中 胃癌으로 診斷된 1265例를 對象으로 分析한 바 다음과 같은 成績을 얻었다. 1. 總胃內視鏡檢査例中 胃癌의 檢索率은 18.1%였으며 이들중 早期胃癌은 全體胃癌例의 3.1%였으나 手術한 胃癌例의 19.6%에 達하였다. 2. 過去 10年間 各年度別 胃癌頻度의 推移를 보면, 近來 胃內視鏡檢査의 普遍化로 人해 胃癌의 胃內視鏡檢査例에 對한 相對的頻度도는 1975年以後 漸次 減少하는 傾向으로 보이나, 來院患者總數에 對한 胃癌의 頻度는 有意한 差異가 없었다. 3. 胃癌의 男女比는 2.3 : 1로서 男子에서 頻發했고, 年齡別로는 50代에서 가장 頻發했으나 進行胃癌dkp서는 20代와 30代가 13.9%를 차지 했고 早期胃癌에서는 30代가 23.1%를 차지해서 젊은 年齡層에서도 결코 적지않은 頻度를 보였다. 4. 胃癌의 好發部位로서는 進行胃癌에서는 A部位(46.4%), 早期胃癌에서는 M部位(59.5%) 그리고 橫的分布로서는 小彎側이 가장 많았다. 5. 胃癌疾巢의 크기는 胃內視鏡 下 生體觀測한 進行胃癌에서는 2cm 以上의 疾巢만도 56.3%에 達했다. 그러나 手術切除後 新鮮胃標本에서 觀測한 早期胃癌의 境遇에서는 1∼3cm 크기의 疾巢(66.7%)가 가장 많았다. 6. 胃癌의 肉眼的形態分類에서는 Borrmann 氏 分類를 實施한 進行胃癌의 境遇 Ⅲ型(62.2%)이가장 頻發했으며 그다음으로 Ⅱ, Ⅰ, Ⅳ, Ⅴ型의 順序를 보였고, 日本內視鏡學會의 分類를 따른 早期胃癌의 경우는 Ⅱ_e 및 Ⅱ_e 複合型이 71.4%로서 가장 많았다. 大別해보면 早期胃癌이나 進行胃癌에서 모두 陷沒形質變이 顯著하게 많음이 觀察되었다. 7. 早期胃癌의 癌浸潤深度는 m이 18疾巢, sm이 24疾巢였고 周圍淋巴腺轉移는 16.7%에서 觀察되었다. 8. 進行胃癌의 手術切除率은 65.2%였으며, 腫瘤觸知例에서는 59.2%, 腫瘤觸知不能例에서는 71.6%였다. 9. 進行胃癌의 肺結核合倂率은 10%로서 1975年度 韓國全域의 肺結核有疾率 3.3%에 比해 3倍以上이었다. A statistic study was done on 1,265 cases of the gastric cancer, selected from 7,000 cases of gastroscopic examination performed at Gastroscopy Room department of Internal Medicine of Kyungpook National University Hospital, Taegu, Korea, during the last 10years period from Jan. 1968 to Aug. 1978. The results were summarized as follows: 1. The overall incidence of gastric cancer among total gastroscopic examination was 18.1% and the incidence of early cancer among total gastric cancer was 3.1%. Among total 193 cases of gastric cancer on whom surgical resection was performed early cancer occupied 19.6%. 2. Annual incidence of gastric cancer among annual number of gastroscopy showed slight decrease in the period of after 1975, compared with before 1975. But no differences were found in the annual incidence of gastric cancer among total number of patients visited at Department of Internal Medicine and of General Surgery. 3. Age distribution of gastric cancer showed the highest incidence in the age group of 5th group (advanced; 2nd and 3rd decades; 13.9%, early; 3rd decade; 23.1%). Male to female ratio was 2.3:1. 4. The location by CMA classification in advanced stomach cancer showed a predilection in area A, while in early cancer, in area M. The location from the view of transection, the most predilection site was the lesser curvature. 5. The size of the lesion measured in vivo during gastroscopy showed the highest incidence in the size larger than 4cm in diameter (56.3%) in advanced gastric cancer, while the size of the lesion measured in fresh resected stomach of the cases of early cancer showed the highest incidence in the size between 1 to 3cm in diameter. 6. Borrmann type classification of advanced gastric cancer in order of frequency were as follows; Ⅲ(92.2%), Ⅱ(26.7%), Ⅰ(8.6%), Ⅳ(2.4%), Ⅴ(0.1%). In early gastric cancer, the most prevalent type was Ⅱc(35.7%) and its combined type (total 71.4%). 7. Concerning the depth of cancerous infiltration in early cancer, 18 lesions were confined to the mucosa, and 24 to the submucosa. Metastasis of the regional lymph node was determined in 4 out of 24 cases (16.7%) 8. Overall resectability of 198 operated cases of gastric cancer was 65.2%. The resectability of the cases with palpable epigastric mass was 59.2% and without palpable epigastric mass, 71.6%. 9. Complication of pulmonary tuberculosis in advanced gastric cancer revealed 10% of prevalence rate, and this value was 3times higher than that of general population in Korea, 1975.