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머신러닝 기반 멀티모달 센싱 IoT 플랫폼 리소스 관리 지원
이성찬,성낙명,이석준,윤재석,Lee, Seongchan,Sung, Nakmyoung,Lee, Seokjun,Jun, Jaeseok 대한임베디드공학회 2022 대한임베디드공학회논문지 Vol.17 No.2
In this paper, we propose a machine learning-based method for supporting resource management of IoT software platforms in a multi-modal sensing scenario. We assume that an IoT device installed with a oneM2M-compatible software platform is connected with various sensors such as PIR, sound, dust, ambient light, ultrasonic, accelerometer, through different embedded system interfaces such as general purpose input output (GPIO), I2C, SPI, USB. Based on a collected dataset including CPU usage and user-defined priority, a machine learning model is trained to estimate the level of nice value required to adjust according to the resource usage patterns. The proposed method is validated by comparing with a rule-based control strategy, showing its practical capability in a multi-modal sensing scenario of IoT devices.
이성찬 대한외상학회 1996 大韓外傷學會誌 Vol.9 No.2
This report is a retrospective clinical study of the total 160 patients who were admitted to the Surgical Department, Inchon Medical Center with emergent intra-abdominal condi- tion due to abdominal trauma during 6 years & 4 months period from August 1990 to November 1996. We obtained the following results; 1) Total 167 cases of emergent intra-abdominal conditions due to abdominal trauma were composed of 36 cases(21.5%) of abdominal wall contusion only, 7 cases(4.2%) of lacer- ation in abdominal wall(no penetration into peritoneal cavity), 74 cases(44.3%) of panperitonitis, and 50 cases(30.0%) of hemoperitoneum(more than 2,000 cc of intraperitoneal blood). 2) Total 170 cases of emergent intra-abdominal conditions due to abdominal trauma could be divided into 137 cases(81%) of blunt trauma and 33 cases(19%) of penetrating trauma. In 137 cases of blunt trauma, there were 36 cases of abdominal wall contusion only(most common), 32 cases of small bowel rupture(2nd most common), 17 cases of splenic laceration (3rd most common), 16 cases of mesenteric tearing (4th most common), 11 cases of colon rupture, 7 cases of duodenal rupture, 6 cases of liver laceration, etc. 3) In 33 cases of penetrating trauma, there were 9 cases of abdominal wall penetration(without intra-abd. Organ damage) (most common), 7 cases of laceration in abdominal wall (without penetration into peritoneal cavity) (2nd most common), 5 cases of stomach rupture(3rd most common), 3 cases of small bowel rupture, 2 cases of liver laceration, etc. 4) Out of the 74 cases of panperitonitis due to abdominal trauma, there were 35 cases(47%, most common) of small bowel rupture, 11 cases(15%, 2nd most common) of colon rupture, 8 cases(11%) of stomach rupture, 7 cases(9%) of duodenal rupture, etc. 5) Out of the 50 cases of hemoperitoneum(more than 2,000cc) due to abdominal trauma, there were 18 cases(36%, most common) of splenic rupture, 17 cases(34%, 2nd most common) of mesenteric tearing, 8 cases of liver laceration, 3 cases of pancreas rupture, etc.
이성찬 대한외상학회 2000 大韓外傷學會誌 Vol.13 No.2
This report is a retrospective clinical study of a total of 200 patients who were admitted to the Surgical Department, Inchon Medical Center, with an emergent intra-abdominal condition due to abdominal trauma during the 10-year period from August 1990 to July 2000. We obtained the following results : 1) The 208 cases of emergent intra-abdominal conditions due to abdominal trauma were composed of 45 cases (21.6%) of abdominal wall contusion only, 9 cases (4.3%) of a laceration in the abdominal wall (no penetration into the peritoneal cavity), 95 cases (45.7%) of panperitonitis, and 59 cases (28.4%) of hemoperitoneum (more than 2,000 cc of intraperitoneal blood). 2) Total 211 cases of emergent intra-abdominal conditions due to abdominal trauma could be divided into 167 cases (79%) of blunt trauma and 44 cases (21%) of penetrating trauma. In the 167 cases of blunt trauma, there were 45 cases of abdominal wall contusion only (most common), 41 cases of small bowel rupture (2nd most common), 20 cases of splenic laceration (3rd most common), 18 cases of mesenteric tearing (4th most common), 12 cases of colon rupture, 9 cases of duodenal rupture, 8 cases of liver laceration, etc. 3) In the 44 cases of penetrating trauma, there were 13 cases of abdominal wall penetration (without intra-abdominal organ damage) (most common), 9 cases of a laceration in the abdominal wall without penetration into the peritoneal cavity (2nd most common), 6 cases of stomach rupture (3rd most common), 6 cases of small bowel rupture, 3 cases of liver laceration, etc. 4) Out of the 95 cases of panperitonitis due to abdominal trauma, there were 47 cases (49%, most common) of small bowel rupture, 12 cases (13%, 2nd most common) of colon rupture, 9 cases (10%) of stomach rupture, 9 cases (9%) of duodenal rupture, etc. 5) Out of the 59 cases of hemoperitoneum (more than 2,000cc) due to abdominal trauma, there were 21 cases (35%, most common) of splenic rupture, 19 cases (32%, 2nd most common) of mesenteric tearing, 11 cases of liver laceration, 4 cases of pancreas rupture, etc. Conclusively, we suggest that absolute careful observation is needed in the case of abdominal trauma and if necessary, surgical intervention will be made as soon as possible in according to surgical indication.
정상 갑상샘 기능을 가진 소아청소년에서 비만과 갑상샘 호르몬과의 연관성
이성찬,고수영,이재희,김은영 조선대학교 의학연구원 2017 The Medical Journal of Chosun University Vol.42 No.4
As the number of obese patients increases, childhood obesity also increases and it is recognized as a big problem because it increases the incidence of hypertension, hyperlipidemia, diabetes and metabolic syndrome. Although thyroid hormone abnormalities sometimes exist in obese patients without thyroid disease, there is still much controversy on the impact of obesity on thyroid hormone test results. Accordingly, the present study investigated the correlation between obesity and thyroid hormone concentrations in children with normal thyroid function. In the present study, 356 patients aged 6-18 years who visited the Chosun University Hospital were randomly selected, after exclusion of those with thyroid disease, diabetes mellitus, kidney disease, those with a history of smoking and drinking, and those taking steroids or lipid lowering agents. There were no significant differences in levels of thyroid stimulation hormone (TSH) and free thyroxin (fT4) between males and females. The patients were divided into groups based on serum TSH concentration: group A with TSH < 4.0 μIU/mL and group B with TSH ≥ 4.0 μIU/mL (upper level of normal range). BMI z score, ALT, rGTP, and total cholesterol were significantly higher in group B. Multiple regression analysis adjusted for age, gender, birth weight, and pubertal development showed that TSH and BMI z score were positively correlated, while fT4 was not correlated with other factors.