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김기운(Ki-Un Kim),이희열(Hee-Yeol Lee),라승탁(Seung-Tak Ra),고태영(Tae-Young Ko),곽동훈(Dong-Hoon Kwak),김재형(Jae-Heong Kim),이영지(Young-Ji Lee),김홍직(Hong-Jik Kim),성재민(Jae-Min Seong),이승호(Seung-Ho-Lee) 대한전자공학회 2018 대한전자공학회 학술대회 Vol.2018 No.11
In this paper, we propose an algorithm that corrects the acceleration value by calculating the gravity acceleration value applied to each axis by using the angle value according to the gravity acceleration. First, acceleration and angular velocity are measured using a 3 - axis acceleration gyro sensor. Second, the measured value of the 3-axis acceleration gyro sensor integrates the angular velocity and measures how tilted it is in real time.Third, after measuring the angle, the acceleration must be subtracted from the gravitational acceleration. At this time, the degree of influence of gravitational acceleration varies depending on the inclined angle, so it should be subtracted in consideration of the angle.Fourth, integrating the value obtained by subtracting the value of gravitational acceleration in consideration of the angle makes it possible to obtain the speed value having the direction, not the speed value having only the size. Experimental results confirm that the acceleration value obtained by subtracting the gravitational acceleration from the measured value of the 3-axis acceleration gyro sensor and the speed value obtained by integrating the measured value can obtain the normal speed value, proving the efficiency of the proposed algorithm in this paper.
곽동훈(Dong-Hoon Kwak),이희열(Hee-Yeol Lee),라승탁(Seung-Tak Ra),고태영(Tae-Young Ko),김재형(Jae-Heong Kim),이영지(Young-Ji Lee),김기운(Ki-Un Kim),김홍직(Hong-Jik Kim),성재민(Jae-Min Seong),배유경(Yoo-Kyung Bae),이승호(Seung-Ho Lee) 대한전자공학회 2018 대한전자공학회 학술대회 Vol.2018 No.6
In this paper, we aim to develop various nuclide analysis systems for moving objects. The nuclide analysis system consists of nuclide analysis (NaI (Ti) Scintillator) and 1 channel MCA Board. Many nuclide analysis algorithms have different bandwidths according to different nuclides. When compared with the spectrum in the background, it is judged that the nucleus exists if the energy level is higher than the background state in the corresponding bandwidth. In this case, the threshold value, which is a criterion to be determined at this time, may be changed in accordance with the total amount of the nuclides, thereby reducing the false detection rate. As a result of various radionuclide tests, discrimination of the radionuclides by the threshold value was performed smoothly in the <SUP>60</SUP>Co region and <SUP>137</SUP>Cs region. Thus, the utility of the proposed system has been demonstrated.
이형우,임종철,김용록,김완,명재일,강헌석,염형렬,류형선,고향미,백종철 대한내과학회 1999 대한내과학회지 Vol.56 No.6
Cutaneous metastases from gastric carcinoma are uncommon. The frequency of metastses to the skin from gastric carcinoma have ranged from 0.3% to 0.4%. Carcinoma en cuirasse, first described by Velpeau in 1838, is marked sclerodermatous change and characterized by a difffuse morphea-like induration of the skin and represents a rare manifestations of breast carcinoma metastatic to the chest wall. It is vary rarely seen in lung, stomach, kidney and other metastasizing malignancies. We report a case of carcinoma en cuirase and nodular carcinoma from gastric carcinoma in a 36-year-old male who complained chiefly of multiple cutaneous nodules. He had mixed lesions of an erythematous morphea-like induration on the neck and multiple erythematous nodules on the chest and abdomen. Gastroscopy finding showed a Borrmann type Ⅳ advanced gastric carcinoma. Histopathologic examination of skin and stomach showed atypical cells with pleomorpic, hyperchromatic nuclei and scanty, eosinophilic cytoplasm, which are consistent with poorly differentiated adenocarcinoma. Immunohistochemical stainings showed positive reaction for cytokeratin. He died three months after the appearance of cutaneous lesions.