e-Learning 환경에서 학생지원서비스에 대한 학습자의 중요도 인식과 만족도 간의 관계에 관한 연구 : the link between the perceived significance and student satisfaction

임연욱,강윤정 한국교육정보미디어학회 2004 교육정보미디어연구 Vol.10 No.1

e-Learning 환경에서의 학생지원서비스는 학습자들이 성공적인 학습 수행을 목표로 한다는 점에서 e-Learning 질 관리에 있어 중요한 비중을 차지하는 요인이라 할 수 있다. 그러나 재정적 제약 하에서 학생지원 서비스의 모든 영역에 충분한 투자가 이루어지기에는 현실적으로 어려움이 많아 이에 본 연구는, 문헌분석을 통해 학생지원서비스의 구성요소를 도출해 내고 이를 국내 6개 사이버대학교에 재학 중인 학생 120명을 대상으로 설문조사를 통해 학생지원서비스에 대한 학습자의 중요도 및 만족도의 인식을 분석하였고, 이를 바탕으로 학생지원서비스의 전략이행의 우선순위를 규명하고 성공적인 e-Learning을 운영하기 위한 학생지원서비스의 실행전략을 제시하였다. 연구결과, 학생지원서비스의 7개 모든 영역에서 중요도와 만족도 인식에 있어 유의미한 차이를 보였으며, 취업지원과 재정지원 영역은 평균 차이가 가장 크게 나타난 영역으로 조사되었다. '중요도-만족도 매트릭스'를 실시한 결과 취업지원 영역이 우선적으로 집중 관리해야 할 학생지원서비스로 나타났으며, 항목별로는 보충·심화학습 자료 제공(학습지원), 학습 소프트웨어의 제공(기술지원), 진학정보 제공 및 취업·진학상담요청(취업지원) 등 네 가지 항목이 가장 우선적으로 관리해야 할 학생지원서비스로 조사되었다. Student support servim in e-learning m h t play an hportant role in quality control for the students SUtCeSSful academic achievement This study &!rives seven areas~components) of student support services in e-learning through the review of literam, and examines students pescepl;lon of the slgnificamx! ordeclg of the seven areas and their satisfactjon Ievd in each a m of student support services in a survey of 120 students at six on-line universities in Korea. Based on this result, the priorities among variaus types of student support services are set forth and their l r r p d m t i n g student support service areas show statistidy significant dfferetlce ween their strategies for sUCCeSSful e-learning are suggested According to the study, all of seven peroeptions of significance and satisfaction level in student support services. After perfurming slgnrficance-satisfaction matrix, we find that the area of job placement upport is in need of systematic improvmt. At the item level, high priorities are given to such itans as pmviding s u p p l m t rnaterial(1eaming suppznt), providing learning m h ( W & c a l support), and p~viding educational guidance & job mnsulting(iob placement sumnt).

IT 벤처기업의 R&D 지출 특성

윤충환,강임호 한양대학교 디지털경제연구소 2003 디지털경제연구 Vol.8 No.-

당뇨병환자에서 게이트심장혈액풀신티그라피를 이용한 심기능 평가

윤상임,송치운,이진홍,안미애,성기양,송민호,이강욱,신영태,김영건,노흥규 충남대학교 의과대학 지역사회의학연구소 1993 충남의대잡지 Vol.20 No.2

Major cardiovascular complications of diabetes are coronary atherosclerosis, diabetic dilated cardiomyopathy, autonomic neuropathy and those are major causes of morbidity and mortality in diabetic patients. Gated blood pool heart scan is noninvasive and useful method for evaluation of functional status of heart in diabetics. We evaluated 52 patients with diabetes and divided 3 groups. Group 1 were 11 patients without proteinuria or with proteinuria less than 550mng during 24 hours. Group 2 were 9 patients with proteinuria more than 550mg during 24 hours and group 3 were 32 patients with endstage renal diasese due to diabetes. We performed 99mTc-HSA cardiac gated blood pool scan and used left ventricular ejection fraction(LVEF), peak ejection rate(PEF) to indices of LV systolic function and peak filling rate(PER) to index of LV diastolic function. The results were follows : 1) LVEF, PER were significantly lower in diabetics with ESRD than diabetics without ESRD, but there were no significant difference between normal controls and diabetics without ESRD 2) PFR was significantly lower in diabetics than normal controls, but there were no significant differences in diabetics with or without nephropathy. 3) There were negative correlation between PER, PFR and duration of diabetes. On the basis of results, PFR is a LV functional index of GBPS which can disclose early change of LV dysfunction in patients with diabetes.

위암세포주에서 Recombinant Human Interferon-r와 Adriamycin의 투여순서가 항암효과에 미치는 영향

홍원선,손영숙,김창민,강윤구,이춘택,김유철,임영혁,남현석,이진오,강태웅 大韓免疫學會 1993 大韓免疫學會誌 Vol.15 No.-

Numerous previous studies, both in vitro and in vivo, have demonstrated that the cytotoxicity can be enhanced by the combination of chemotherapeutic agent and interferons(IFNs) in various types of cancer cells. We have previously reported that combined treatment of MKN-45, human gastric adenocarcinoma cells, with adriamycin(ADM) and recombinant human interferon-r(rh-IFN-r) increased in the cytotoxicity. In this study, the effects of combination timing of rh-IFN-r and ADM on the cytotoxicity against MKN-45 were investigated using MTT assay. MKN-45 was treated with rh-IFN-r and ADM in vitro on three schedules : Treat A ; rh-IFN-r and ADM were treated simultaneously, Treat B ; rh-IFN-r was treated 24 hours after the treatment with ADM, Treat C ; rh-IFN-r was treated for 72 hours and followed by the treatment with ADM. The survival of MKN -45 was inhibited by ADM dose-dependently. 102 and 103U/ml of rh-IFN-r significantly inhibited the survival of MKN-45(% survival : 35.1 ±-1.2% and 34.4 ±1.1% in Treat A and 42.5 ± 2.1% and 45.9-±2.5% in Treat C, respectively). However no difference in the survival was observed between 102 and 103U/ml of rh-IFN-r. Combined treatment with rh-IFN-r and ADM significantly augmented the cytotoxicity at low concentrations of ADM. Combined effects of rh-IFN-r and ADM were evaluated using IC30(,ag/ml) to ADM. IC30s of MKN-45 in Treat A, B and C at 102 U/ml of rh -IFN-r _ were 0.019 -?- 0.003, 0.045 :I:0.001 and 0.054 ± 0.012, respectively, while IC30 of MKN-45 treated with ADM alone was 0.052±0.004. IC30s of MKN-45 in ADM alone group, Treat A, Treat B and Treat C at 103U/ml of rh-IFN-r were 0.047 ±0.003, 0.004 -±0.001, 0.031 ±0.004 and 0.056 0.008, respectively. These results indicate IC30s of Treat A and B were significantly lower than those of ADM alone(p<0.05) and IC30s of Treat A was significantly lower than those of Treat B(p <0.01). IC30s of Treat C, however, were not different from those of ADM alone. From these results demonstrating that cytotoxic effects were increased by the combination of rh-IFN-r and ADM in the order, Treat A > Treat B> Treat C, it can be concluded that the simultaneous administration of rh-IFN-r and ADM may be the most effective method to combine these two therapeutic modalties.

혈액투석중인 만성신부전 환자에서 골대사 지표로써의 Osteocalcin치

송치운,이진홍,안미애,윤환중,윤상임,성기양,이강현,송민호,이강욱,신영태,김영건,노흥규 충남대학교 의과대학 지역사회의학연구소 1993 충남의대잡지 Vol.20 No.2

Background : Serum osteocalcin is synthesized by osteoblast and has been shown to be sensitive indicator of bone turnover inpatients with various metabolic bone disease. In renal osteodystrophy, serum osteocalcin is elevated due to decreased renal clearance and elevated level of PTH. This study was done to evaluate the usefulness of serum osteocalcin as a marker of bone metabolism and the correlation with other biochemical markers of bone metabolism. Methods : We measured serum osteocalcin, calcium, phosphorus, ALP(alkaline phosphatase) and PTH(parathyroid hormone) in 37 patients with end stage renal disease on hemodialysis. Osteocalcin was determined by radioimmunoassay and PTH was determined by radioimmunometric assay. Results : 1) The mean level of serum osteocalcin in ESRD patients was 233.8± 218.2ng/ml which was significantly higher than that of controls(p<0.0001). 2) The mean level of serum PTH in ESRD patients was 40.5± 43.8pg/ml was significantly higher than that of controls(p<0.005). 3) There was a significant positive correlation between the level of serum PTH, ALP and the level of serum osteocalcin in ESRD patients. 4) By using multiple regression, PTH is most reliable factor that affect to elevated level of serum osteocalcin ( beta coefficient = 0.687, Sig T<0.05). Conclusion : Serum osteocalcin as a marker of bone metabolism in ESRD patients is more useful than other biochemical marker such as serum calcium, phosphorus, ALP and PTH is a most reliable factor that affect to elevated level of serum osteocalin.

기능성 Catechol-O-Methyltransferase 유전자 다형성과 한국인 정신분열병의 관련성

박태원,홍영준,박임순,김형섭,최인미,배수영,윤경식,강대희 大韓神經精神醫學會 2001 신경정신의학 Vol.40 No.4

연구목적 : Catechol-O-Methyltransferase(COMT)는 카테콜아민 신경전달물질의 불활성화를 담당하는 효소로서, 정신분열병과 관련된 후보 유전자로서 알려져 왔다. 최근, 기능성 COMT유전자 다형성과 정신분열병의 관련성이 제기되었는데, 한국인 정신분열병에서도 이러한 관련성이 있는지를 살피기 위해 본 연구를 시행하였다. 방 법 : 정신분열병으로 진단된 환자군 103명과 성별 및 연령별로 1:1 짝짓기 대조군 사이에 유전자형과 대립유전자의 분포를 비교하였다. 또한, 환자군은 공격적 행동, 가족력, 아동기 발병 여부에 따라 두 군으로 나누어 비교하였다. DNA의 다형성 부의를 중합효소연쇄반응에 의해 증폭한 후 ,NlaⅢ제한효소법과 전기영동을 실시하여 유전자형을 판별하였다. 결 과 : 환자군 전체와 대조군 사이에 유전자형과 대립유전자 빈도의 차이가 없었다. 가족력이 있는 환자군을 대조군과 비교하였을 때는, 대립유전자 L을 포함하는 유전자형과 그렇지 않은 유전자형의 분포에 있어 유의한 차이를 보였다(p=0.02, OR=3.9, 95% Cl=1.1∼14.3). 결 론 : 한국인 정신분열병과 기능성 COMT 유전자 다형성 사이에 유의한 관련성이 없었다. 따라서, 기능성 COMT 유전자 다형성이 한국인 정신분열병의 발병에 영향을 주지 못한다. 그러나, 정신분열병 가족력과 기능성 COMT유전자 다형성의 관련성이 시시돠어, 향후 본 연구에서 나타난 방법론적인 문제점을 보완하고 추가 대상자를 확보한 연구가 필요하다. Objectives : Catechol-O-methyltransferase(COMT) is involved in the degradation of catecholamine meurotransmitters and has been investigated as a candidate gene in schizophrenia. Recently, possible relationship between functional COMT gene polymorphism and schizophrenia has been suggested. To address the possible role of functional COMT gene polymorphism in the predisposition to schizophrenia, we carried out an association study in Korean schizophrenic patients and controls. Methods : One hundred and three Korean inpatients diagnosed as schizophrenia and 103 age and sex matched controls were selected as study subjects. Patients were subgrouped into two groups on the basis of history of aggressive behavior, family history of schizophrenia and related disorders, and age at onset. We determined COMT genotypes using PCR of the relevant region followed by digestion with NlaⅢ and electrophoresis. Results : No significant differences of allele and genotype frequencies were noted between patients and controls. However, when patients were categorized by the presence of family history of schizophrenia and related disorders, patients with family history showed almost 4 fold higher frequency of having COMT L allele containing genotype compared to controls(p=0.02, OR=3.9, 9.5% CI=1.10-14.33). Conclusion : Although our results do not support an association between functional polymorphism of COMT gene and schizophrenia overall, the findings suggest an association between functional COMT gene polymorphism and familial schizophrenia. Further studies with large samples are needed to confirm this association.

동결온도가 진공포장 동결육의 품질에 미치는 영향

정인철,김도완,문귀임,강세주,김기영,문윤희 한국식품영양학회 1998 韓國食品營養學會誌 Vol.11 No.4

본 연구는 진공포장 동결육의 품질에 미치는 영향을 검토하기 위하여 수행하였다. 해동드립은 -3℃와 -20℃ 동결이 60일째 각각 5.23% 및 5.17%로 동결기간이 경과함에 따라 현저하게 증가하였다. 가열감량은 water bath와 pan에서 가열한 것이 모두 동결초기보다 동결기간이 경과함에 따라 현저하게 증가하였다. 그러나 -3℃와 -20℃ 사이에는 현저한 차이가 없었다. 염용성 단백질의 추출성은 동결기간이 지남에 따라 감소하였고, -20℃ 동결이 -3℃보다 추출성이 더 높았다. 수용성 단백질의 추출성은 동결기간이 경과하면서 증가하였고 -3℃ 동결이 -20℃보다 현저하게 높았다. 그리고 L, a 및 b값은 저장초기가 동결저장 중보다 높다. Myoglobin의 변성율은 -3℃ 동결이 -20℃보다 비교적 높게 나타났는데, -3℃ 동결의 15일째가 96.0%로 가장 높게 나타났다. 전단력가는 동결저장 중 현저한 변화가 없었고, 근원섬유의 소편화도는 동결초기보다 동결저장이 더 높았지만 동결저장 중에는 변화가 없었다. pH는 -3℃와 -20℃ 동결저장 모두 45일까지 감소하다가 그 이후에는 증가하는 경향이었다. This study was carried out to investigate the effects of freezing temperature on quality of vacuum packaging freezed beef. In case of thaw drip loss, the freezing of -3℃ and -20℃ were 5.23% and 5.17% to 60 days respectively, were increased significantly during freezing. The cooking loss of water bath and pan were increased significantly during freezing than the beginning of freezing, but were no different between -3℃ and -20℃. The salt soluble protein extractability was decreased during freezing, the -20℃ freezing was higher than -3℃ freezing. The water soluble protein extractability was increased during freezing, the -3℃ freezing was higher than -20℃ freezing. The L, a and b value of the beginning of freezing higher than during freezing. The myoglobin denatured percentage of the -3℃ freezing was higher than -20℃ freezing, the 15 days storage of -3℃ freezing was highest to 96%. The shear force value was not change during freezing, the myofibrillar fragmentation index during freezing was higher than the beginning of freezing, but was not change during freezing. The pH was decreased to freezing 45 days, after that increased.

Development and Evaluation of Application for Health Assessment Practicum based on ARCS Model

Kang Yoon-ji,Kang Yoon-ji,Jung Kwuy Im 한국간호과학회 2023 한국간호과학회 학술대회 Vol.2023 No.11

Ferromagnetism in One Layer of Self-organized InMnAs Quantum Dots

Yoon, Im Taek,Lee, Sejoon,Shon, Yoon,Lee, Seung Woong,Kang, Tae Won Springer-Verlag 2011 Journal of superconductivity and novel magnetism Vol.24 No.5

The outcome of hematopoietic stem cell transplantation in Korean children with hemophagocytic lymphohistiocytosis

Yoon, Hoi Soo,Im, Ho Joon,Moon, Hyung Nam,Lee, Jae Hee,Kim, Hee-Jin,Yoo, Keon Hee,Sung, Ki Woong,Koo, Hong Hoe,Kang, Hyung Jin,Shin, Hee Young,Ahn, Hyo Seop,Cho, Bin,Kim, Hack Ki,Lyu, Chuhl Joo,Lee, M Blackwell Publishing Ltd 2010 Pediatric transplantation Vol.14 No.6

<P>Yoon HS, Im HJ, Moon HN, Lee JH, Kim H-J, Yoo KH, Sung KW, Koo HH, Kang HJ, Shin HY, Ahn HS, Cho B, Kim HK, Lyu CJ, Lee MJ, Kook H, Hwang TJ, Seo JJ. The outcome of hematopoietic stem cell transplantation in Korean children with hemophagocytic lymphohistiocytosis.Pediatr Transplantation 2010: 14:735–740. © 2010 John Wiley & Sons A/S.</P><P>Abstract: </P><P>Chemoimmunotherapy-based treatments have improved the survival of patients with HLH, but outcomes of the patients are still unsatisfactory. We report here the outcome of Korean children with HLH who underwent HSCT, which was analyzed from the data of a nation-wide HLH registry. Retrospective nation-wide data recruitment for the pediatric HLH patients diagnosed between 1996 and 2008 was carried out by the Histiocytosis Working Party of the Korean Society of Hematology. Nineteen patients who received HSCT among the total of 148 enrolled children with HLH were analyzed for the transplant-related variables and events. The probability of five-yr survival after HSCT was 73.3% with a median follow-up of 57. Two months compared to 54.3% for the patients who were treated with chemoimmunotherapy only (p<I> </I>=<I> </I>0.05). The reasons for HSCT were active disease after eight wk of initial treatment (n = 9), relapsed disease (n = 5), and FHL (n = 5). Fourteen patients are currently alive without disease after HSCT, four patients died of treatment-related events (infection in two and graft failure in two) at early post-transplant period, and one patient died of relapse at one yr post transplantation. The survival of patients who were transplanted because of active disease after eight wk of initial treatment was worse compared to those patients who had inactive state at that time (60.6% vs. 100%, respectively, p<I> </I>=<I> </I>0.06). Of the four patients who received transplants using cord blood, three died of graft failure (n = 2) and relapse (n = 1). The five-yr probability of survival after HSCT according to the donor type was 85.7% for the MRDs (n = 6), 87.5% for the MUDs (n = 8), and 40% for the MMUDs (n = 5) (p<I> </I>=<I> </I>0.03). Other variables such as age, CNS involvement at the time of diagnosis, the etiology of HLH (familial or secondary), and the conditioning regimens had no influence on the five-yr OS of the HLH patients who underwent HSCT. HSCT improved the survival of the patients who had familial, relapsed, or severe and persistent SHLH in the Korean nation-wide HLH registry. Although numbers were small, these results are similar to other reports in the literature. The disease state after initial treatment, the stem cell source of the transplant, and the donor type were the important prognostic factors that affected the OS of the HLH patients who underwent HSCT.</P>