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이상석,신용철,김민회,박찬규,이재용 영남이공대학 2004 論文集 Vol.33 No.-
This research is that concern in electrical mathematics education of Technical high school Department of Electricity in the 7th educational curriculum. In the 7th educational curriculum, indicated problem about mathematics education of Technical high school Department of Electricity and examine major subject, contents of mathematics that use in major subject and analyzed contents of mathematics that must supplement. With this analysis, established necessary electrical mathematics contents for major subject studying of Technical high school Department of Electricity.
신석재,강현춘,안형환,강안수,김용렬,한성만,이한섭 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-
In the electrodeposition of copper foil for preparing printed circuit boards, a little amount of gelatin as a addition agent has been used for the better characteristics of a coat of electroplating. Gelatin modifies the physical properties such as mechanical strength, matte-side roughness, ultimate tensile strength(U.T.S), and elongation of copper foil, furthermore gelatin have influence on the structure of electrodeposits and the cathode polarization. The electrolyte used was of a composition; CuSO₄·5H₂O 300g/ℓ, H₂SO₄ 100g/ℓ, NaCl 10 ppm as a brightner, and was gelatin 0-7 ppm as a addition agent. Current density was 50 A/dm², and the temperature of electrolytic bath was 50 to 52 ℃. Experiments showed that the optimum gelatin concentration was 5 ppm with the consideration of the numbers of electrodeposited nuclei. And the nuclei numbers was sharply increased under 5 ppm, but was almostly constant above 5ppm. Average matte-side roughness by Surfcorder was gradually increased with the increasing gelatine concentration up to 2 ppm, and maximum roughness was observed at 2ppm. The roughness showed gradual decrease within the concentration range of 2 to 4 ppm, and was almost constant above 4ppm . Within the gelatine concentration range of 0 to 7 ppm, as the concentration increased, UTS was increased and elongation was decreased logarithmically. Also, in comparison between UTS and elongation, gelatin was identified as an addition agent acting inversely.
운동형태의 차이가 Alloxan유발 당뇨쥐의 혈당 및 인슐린 농도에 미치는 영향
윤진환,정일규,김종오,이희혁,지용석,오봉석,채정룡 대한스포츠의학회 2003 대한스포츠의학회지 Vol.21 No.1
The Purpose of this study was to investigate the effect of exercise intensity on blood glucose and insulin levels in diabetic rats with alloxan. Twenty sprague-dawley male rats were assigned to power training groups(n=10) and endurance training groups(n=10). Diabetes was induced by single injection of alloxan(50 mg/kg B.W) Blood glucose and insulin were determined every week for 4-weeks. The conclusion of this study follows as below: 1) There was significantly different on blood glucose levels in two groups. 2) There was significantly different on insulin levels in two groups These results suggest that proper exercise intensity in diabetic rats can significantly decrease blood glucose and insulin level and make good glycemic control. In conclusion, it has been found that regular prolonged endurance training with diabetic rats, improves insulin and blood glucose.
( Ji Heui Lee ),( Young Bae Kim ),( Min Kee Lee ),( Jong Il Kim ),( Ji Yeon Lee ),( So Young Lee ),( Eun Ju Lee ),( Yong Seock Lee ) 대한마취과학회 2010 Korean Journal of Anesthesiology Vol.59 No.3
The percutaneous placement of a totally implantable vascular access port via the subclavian vein is commonly used in patients with a need for multiple intravenous infusions such as administration of chemotherapy. Unfortunately, the use of central venous ports have been associated with adverse events that are hazardous to patients. Here we report the case of a 5-year-old child who died of catastrophic hemothorax after several attempts at insertion of an implantable subclavian venous access device and removal of an infected port. Massive hemothorax occurred on the side contralateral to unsuccessful attempts at insertion of a new port and ipsilateral to the removal of an infected port. We could not confirm the cause of death and hemothorax without autopsy, but we discuss several possible causes of massive hemothorax. (Korean J Anesthesiol 2010; 59: 214-219)
Lee, Dae-Won,Han, Sae-Won,Cha, Yongjun,Rhee, Ye Young,Bae, Jeong Mo,Cho, Nam-Yun,Lee, Kyung-Hun,Kim, Tae-Yong,Oh, Do-Youn,Im, Seock-Ah,Bang, Yung-Jue,Jeong, Seung-Yong,Park, Kyu Joo,Kang, Gyeong Hoon BioMed Central 2015 CLINICAL EPIGENETICS Vol.7 No.-
<P><B>Background</B></P><P>Profound methylation of CpG islands constitutes a distinct molecular subtype of colorectal cancer (CRC). The frequencies of methylation in CRC vary according to clinico-pathological characteristics including sex. However, interaction between these characteristics and prognostic influence of methylation status has not been clearly defined. We have investigated the prognostic role of promoter methylation using eight CpG island methylator phenotype (CIMP) markers in 497 stage II or III CRC patients who underwent curative resection followed by adjuvant FOLFOX. Overall survival (OS) and disease-free survival (DFS) were compared between subgroups classified by methylation status, and interactions with clinico-pathological features were analyzed.</P><P><B>Results</B></P><P>CIMP-high (≥5 methylated loci) and concurrent methylation in <I>NEUROG1</I> and <I>CDKN2A (p16)</I> were found in 5.8 and 7.9 % of patients, respectively. Although CIMP-high status was not associated with survival, concurrent methylation in <I>NEUROG1</I> and <I>CDKN2A (p16)</I> was associated with shorter OS and DFS. Moreover, the prognostic role of the concurrent methylation was different among sex. The negative prognostic impact was only observed in male but not in female (interaction <I>p</I> value = 0.026 for OS and 0.011 for DFS). In male, the 5-year OS was 61.6 % in concurrent methylation (+) and 91.7 % in concurrent methylation (−) (<I>p</I> < 0.001) whereas it was 95.0 and 92.8 % in female, respectively (<I>p</I> = 0.78).</P><P><B>Conclusions</B></P><P>Concurrent methylation in <I>NEUROG1</I> and <I>CDKN2A</I> is associated with poor survival in CRC treated with adjuvant FOLFOX. Interaction analysis indicates that the prognostic role is different according to sex.</P>
어플리케이션의 과거 실행 패턴에 기반한 페이지 교체 알고리즘
이석용(Seock Yong Lee),이인환(InHwan Lee) 한국정보과학회 2009 한국정보과학회 학술발표논문집 Vol.36 No.2B
가상 메모리 기법이 적용되는 시스템에서는 메모리 가상화의 결과로 발생하는 페이지 폴트에 의해 시스템 성능의 저하가 발생하게 된다. 이러한 페이지 폴트를 방지하기 위하여 많은 운영체제는 페이지 교체라는 방법을 적용하고 있으며, 다양한 어플리케이션들의 메모리에 대한 참조 패턴에 대응하는 여러 가지 페이지 교체 알고리즘들이 존재한다. 본 논문에서는 메모리상에 존재하는 페이지를 내용에 따라 코드 페이지와 데이터 페이지로 구분한 후 그것을 페이지의 참조 순서에 대한 예측에 사용하여 교체될 페이지를 선정하는 방법을 소개하며, 제안 방법을 실제 시스템에 적용하여 성능을 평가한다.