초등학교 3학년 학생의 수학에 대한 인식 태도 연구

박순길,강지우,고대용,김다희,임언미 大邱大學校 師範大學 附設 敎育硏究所 2009 學校敎育硏究 Vol.5 No.1

The purpose of this study was to investigate a study on awareness attitudes of mathematics education in elementary school. This study was conducted with 152 W elementary school of Gwang Ju, 105 H elementary school of Gyeong Ju making up 257 in total. Mean, standard deviation, t-test were done to draw out the conclusions according to different study purposes. The findings of this study were as follows; First, the awareness attitudes of mathematics education was non-significant compared to those in the male-female group. Second, it can be said that the awareness attitude of Gwang Ju toward the elementary students was more positive compared to the Gyeong Ju elementary students. Third, it can be said that the awareness attitude of mathematics attend a lecture group toward the elementary students was more positive compared to the non-mathematics attend a lecture group. 본 연구는 초등학교 3학년 학생들의 수학에 대한 인식태도를 알아보고자 하였다. 본 연구의 대상은 광주광역시 W초등학교 3학년 152명과 경주시 H초등학교 3학년 105명이며, 연구결과를 알아보기 위하여 기술통계와 t검정을 하였으며 연구결론은 다음과 같다. 첫째, 초등학교 3학년 학생들의 수학에 대한 인식태도에서 남녀 간의 차이가 나타나지 않았다. 그러므로 수학에 대한 자신감이나 흥미에서 남녀 간에 차이를 보이지 않았다. 둘째, 지역별로 대도시에 사는 초등학교 3학생들이 중소도시에 사는 초등학교 3학년 학생들보다 인지적 영역에서 차이가 있었으며, 더 긍정적인 인식을 가지고 있었다. 셋째, 수학학원에 다니고 있거나 다닌 경험이 있는 초등학교 3학년 학생들이 학원에 다니지 않은 초등학교 3학년 학생들보다 수학에 대한 인지적 영역, 정의적 영역, 전체인식태도에서 더 긍정적인 인식을 가지고 있었다.

동일한 혈관 내에 발생한 이식형 약제 주입기 카테터의 위치이상

오대석,김영재,김명훈,조광래,임세훈,이정한,이근무,정순호,신치만 仁濟大學校 白病院 2010 仁濟醫學 Vol.31 No.-

저자들은 56세 여성 환자의 왼쪽 쇄골 하 정맥에 시행한 이식형 약제주입기 카테터의 삽입 후 발생한 비정상 위치에 대한 증례를 보고하고자 한다. 카테터의 끝은 환자의 늘 어진 가슴, 체위, 신체의 움직임, 카테터의 유동성 등의 영향으로 천자된 정맥 내에서 견인되고 뒤쪽으로 이동하였다. 환자는 어떠한 증상도 호소하지 않았지만 비정상 위치의 카테터는 심각한 합병증을 유발할 수 있기 때문에 제거되었다. 따라서 시술자는 약제주입기 삽입 전에 환자의 신체 상태와 단순 흉부 촬영상을 확인하고 카테터의 비정상 위치가 발생할 수 있는 위험 징후를 알아차려야 하겠다.

임신중 산전 초음파로 진단된 자궁근종의 임상적 고찰

서정호,김윤숙,김대원,이동운,최규연,이정재,이임순 순천향의학연구소 2003 Journal of Soonchunhyang Medical Science Vol.9 No.1

Objectives: To study the clinical manifestations; time, mode of delivery, size of myomas and outcome of pregnancy in cases of myomas that were detected prior to pregnancy or during the antenatal care and after delivery. Methods: We statistically analyzed 76 patients with uterine myomas in pregnancy admitted to Soonchunhyang Seoul Hospital during the period of Jan. 1999 and Dec. 2001. Results: The results are as follows. 1. The mean age of patients in the detected group and undetected group were 32.9 years and 32.3 years, respectively. There was no difference in the proportion of primarity between the detected group(98.2%) and the undetected group(79.6%) 2. The most common type of uterine myoma in both groups was intramural myoma (detected group 94.1% vs undetected group 81.3%). The uterine myomas were most commonly located in the anterior portion and fundus(detected group 52.9% and 23.5% respectively vs undetected group 47.4% and 23.7% respectively) and the proportion was not significantly different between the two groups. Uterine myomas with a diameter of 3cm or more in the detected group were detected by clinical examination and ultrasonogram. Rate of uterine myomas with a diameter of 3cm or more in the detected group is 76.5% and less than 3cm is 54.2% which detected incidentally at delivery. 3. The proportion of term infants were detected group 88.2% vs undetected group 91.5%. 4. The most common indications for cesarean section in both groups were cephalopelvic disproportion and repeated cesarean section (detected group 41.2% and 45.8% respectively vs undetected group 11.8% and 18.6% respectively) and there was no significant difference between the two groups. 5. Secondary pathologic changes in the all myomectomy specimens were degeneration in both groups but there was no necrosis or sarcomatous change. 6. Antenatal complications were preterm labor, premature repture of membranes, spontaneous abortion, malpresentation, and placenta previa. Intrauterine growth retardation and placental abruption were not seen in both groups. Conclusion: Myoma detected by ultrasonogram before or during pregnancy is not a significant implication of pregnancy outcome.

퉁퉁마디로부터 염에 의하여 유도되는 Aldolase 유전자의 분리 및 발현분석

차준영,네티 엘마와티,김순길,이증주,임채오,정우식,이곤호,손대영 Plant molecular biology and biotechnology research 2003 Plant molecular biology and biotechnology research Vol.2003 No.-

Soil salinity is one of the most serious abiotic stresses limiting the productivity of agricultural crops. To cope with salt stress, plants respond with physiological, developmental and biochemical changes, including the synthesis of a number of proteins and the induction of gene expression. Salicornia herbacea is a halophytic plant that grows in salt marches and on muddy seashores. In order to understand the biochemical and molecular mechanisms of salt tolerance in S. herbacea, we isolated several genes that involved in the salt tolerance by mRNA differential display.Here we report the cloning of a cDNA encoding fructose-1, 6-bisphosphate aldolase, named ShADL, which is 1293 bp long and contains an open reading frame consisted of 359 amino acids with calculated molecular mass of 39 kDa. ShADL protein showed 86% identity with Arabidopsis and 78% with aldolase of common ice plant. Northern blot analysis revealed that the transcript of ShADL gene was increased dramatically depending on the NaCI concentrations.

연구원 활동 : 발표논문요약 < 재료공학분야 >

(Dae Soon Lim),(Jang Yup Kim) 고려대학교 공학기술연구소 1994 공학기술연구소보 Vol.1 No.-

Effect of Surface Morphology on the Erosion Behavior of Free Standing Diamond Films

Lim, Dae-Soon,Kim, Jong-Hoon ENGINEERING TRIBOLOGY RESEARCH INSTITUTE KYUNGPOOK 2000 INTERNATIONAL SYMPOSIUM ON HIGH PERFORMANCE OF TRI Vol.2000 No.-

Diamond film on silicon wafer was fabricated by microwave CVD process to investigate the effect of surface morphology on the erosion behavior of free standing diamond films for optical windows application. After deposition, the growth side was mechanically polished and silicon substrate was etched out with hydrofluoric acid to make optically flat infra-red (IR) window. With prolonged erosive impacts by SiC particles, those two sides of free-standing diamond windows showed significantly different damage resistance. Optical transmittance of substrate side, which has smaller diamond grains, was maintained to be the same as that of the non-eroded diamond even after 400 times of repeated erosive impacts. On the other hand, optical transmittance of nucleation side, which has larger diamond grain, was too low to be used as IR window. The difference in the damage resistance between substrate side and growth side is discussed based on scanning electron microscopy of eroded region to explain the different optical behavior of transmittance.

Diagnostic Performance of Serum Asialo α₁-Acid Glycoprotein Levels to Predict Liver Cirrhosis

( Dae Hyun Lim ),( Mimi Kim ),( Dae Won Jun ),( Min Jung Kwak ),( Jai Hoon Yoon ),( Kang Nyeong Lee ),( Hang Lak Lee ),( Oh Young Lee ),( Byung Chul Yoon ),( Ho Soon Choi ),( Bo Kyeong Kang ) 대한소화기학회 2021 Gut and Liver Vol.15 No.1

Background/Aims: To date, studies on various noninvasive techniques have been suggested to evaluate the degree of liver fibrosis. We aimed to investigate the diagnostic performance of serum asialo α1-acid glycoprotein (AsAGP) in the diagnosis of liver cirrhosis compared with chronic hepatitis for clinically useful result. Methods: We conducted a case-control study of 96 patients with chronic liver disease. Chronic hepatitis was defined as the presence of chronic liver disease on ultrasonography, with a liver stiffness of less than 5.0 kPa as shown on magnetic resonance elastography (MRE). Liver cirrhosis was defined as liver stiffness of more than 5.0 kPa on MRE. The serum AsAGP concentration was compared between the two groups. Results: Serum AsAGP levels were significantly higher in patients with cirrhosis than in those with chronic hepatitis (1.83 μg/mL vs 1.42 μg/mL, p<0.001). Additionally, when comparing patients in each cirrhotic group (Child-Pugh grades A, B, and C) to those with chronic hepatitis, AsAGP levels were significantly higher in all the cirrhotic groups (p<0.05, p<0.01, p<0.001, respectively). The sensitivity and specificity of AsAGP for detecting cirrhosis were 79.2% and 64.6%, respectively, and the area under the curve value was 0.733. The best diagnostic cutoff to predict cirrhosis was 1.4 μg/mL. AsAGP and bilirubin were found to be independent risk factors for the prediction of cirrhosis in the logistic regression analysis. Conclusions: Serum AsAGP showed an acceptable diagnostic performance in predicting liver cirrhosis. (Gut Liver 2021;15:109-116)

Recurrent Coronary Artery Vasospasm in a Patient with Hepatocellular Carcinoma Treated with Sorafenib: a Case Report and Literature Review

( Dae Hyun Lim ),( Jai Hoon Yoon ),( Dae Won Jun ),( Oh Young Lee ),( Byung Chul Yoon ),( Hang Rak Lee ),( Kyung Soo Kim ),( Ho Soon Choi ) 대한간암학회 2020 대한간암학회지 Vol.20 No.1

Tyrosine kinase inhibitors are widely used as targeted treatments for various malignancies. Sorafenib is an orally active tyrosine kinase inhibitor that blocks the signaling pathways of several growth factors. Its use is approved for various malignancies such as unresectable hepatocellular carcinoma, renal cell carcinoma, and gastrointestinal stromal tumors. Several adverse effects have been reported in the literature; however, cardiotoxicity is rare. We present a case of recurrent coronary vasospasm caused by short-term administration (5 days) of sorafenib. Since it caused refractory ischemia after re-administration, we had no choice but to stop the treatment. (J Liver Cancer 2020;20:67-71)

The Effects of Impurities in Silicon Nitride Substrate on Tribological Behavior between Diamond Film and Silicon Nitride Ball

Dae-Soon Lim,Jong-Hoon Kim 한국트라이볼로지학회 1995 Lubricants SYMPOSIUM Vol.1995 No.10

Erosion Behavior of Silicon Nitride with Graded Microstructure

Lim, Dae Soon,Park, Jong In,Lim, Dong Phill,Han, Byung Dong,Park, Dong Soo Trans Tech Publications, Ltd. 2005 Key Engineering Materials Vol.287 No.-

<P>Silicon nitride has been considered as candidate tribological material due to their excellent mechanical and thermal properties. This study investigated the effect of graded grain size on the erosion behavior of silicon nitride at room and high temperatures. Erosion tests were carried out with a gas blast-type erosion tester at temperatures up to 800 °C. Weight loss after impact of SiC particles were measured. The erosion rate varied with temperature and microstructure. Different erosion behavior depending on microstructure were discussed based on SEM observation Auger depth profile of worn surfaces.</P>