유출특성 분포함수의 표준화를 통한 종합홍수지수의 개발

위성욱,정건희,김태웅 한국수자원학회 2008 한국수자원학회논문집 Vol.41 No.6

본 연구에서는 우리나라 홍수유출의 특성을 종합적으로 표현할 수 있는 홍수지수를 개발하였다. 홍수유출특성을 종합적으로 지수에 반영하기 위하여 유출곡선으로 표현되는 홍수유출의 특성을 홍수수문곡선의 상승률, 첨두유량, 홍수 응답시간, 첨두발생 전 홍수용적 등 4가지의 특성인자로 표현하였다. 이러한 유출특성인자를 객관적인 상대심도로 표현하기 위하여 본 연구에서는 특성인자의 분포함수를 표준정규분포함수로 변환하여 특성지수를 산정하였다. 본 연구에서 산정한 종합홍수 This study developed a flood index which evaluates runoff characteristics. Runoff characteristics expressed in a hydrograph were reflected in the flood index in the form of characteristic factors such as a rising curve gradient, a peak discharge, a flood

여대생의 교우관게에 따른 자기효능감과 학습상황에서의 무기력행동과의 관계

위성욱 인문사회과학기술융합학회 2016 예술인문사회융합멀티미디어논문지 Vol.6 No.9

대도시에 거주하는 여성의 모유 중 Indicator PCBs와 식이습성 및 인구통계학적 인자간의 관계

위성욱,김기호,조봉희,조유진,윤조희,민병윤,We, Sung-Ug,Kim, Ki-Ho,Cho, Bong-Hui,Cho, Yu-Jin,Yoon, Cho-Hee,Min, Byung-Yoon 한국환경보건학회 2010 한국환경보건학회지 Vol.36 No.3

In this study, breast milk levels of indicator polychlorinated biphenyls (PCBs) were estimated, and statistics drawn, for 22 Koreans in the general population, aged 26-38, who had resided in metropolitan areas for more than 5 years without occupational exposure to organochlorine pollutants. Concentrations of indicator PCBs were measured using the isotope dilution method with a high resolution gas chromatograph/high resolution mass detector, which provided accurate and precise data for investigation of trends, and international comparisons. The geometric mean of total indicator PCB levels was 22.3 ng/g lipid, which is significantly lower than the level in individuals from European countries. Overall, the geometric mean and 95th percentile of the most abundant congener PCB 153 were 8.04 ng/g lipid and 16.4 ng/g lipid, respectively. PCB congeners 138, 153 and 180 together accounted for about 75% of the indicator congeners analyzed. Breast milk total indicator PCB concentrations were significantly associated with age and parity, but not with body mass index (BMI), rate of body weight increase, or smoking habits. The geometric mean level of PCB 153 in breast milk from mothers with a pre-pregnant BMI < $21\;kg/m^2$ was significantly higher than in pre-pregnant women with a BMI of ${\geqslant}\;21\;kg/m^2$ (p<0.05). Women who ate more fish, meat, and milk products did not have significantly higher total indicator PCB levels than those who ate less of these products, but a significant difference in PCB 153 levels was demonstrated between the subjects consuming higher (11.45 ng/g lipid) and lower (6.79 ng/g lipid) amounts of fish (p<0.05), after adjusting for confounders. These results suggest that age, parity and fish intake are the important factors affecting the concentrations of indicator PCBs in these subjects.

보건의료전공 대학생들의 환자안전에 대한 태도와 수행자신감

위성욱 한국디지털정책학회 2019 디지털융복합연구 Vol.17 No.2

The Purpose of this study was to investigate the attitude and confidence of patient safety in undergraduate healthcare professions students. The subjects consisted of 145 grade 3,4 students who have had clinical practice in nursing and emergency medical technician schools in a J province from June 1st to 30th in 2016. Data were analyzed with SPSS 21.0 using descriptive statistics. The results of the study showed that the attitude of nursing students were more positive, but there was no difference in patient safety self-confidence and patient safety education experience, and the students who had experienced medical errors saw positive attitude and self-confidence. Based on the results of this study, I propose case-based multidisciplinary contents development to nurture emergency healthcare professions. 본 연구는 보건의료전공 대학생을 대상으로 환자안전에 대한 태도와 수행자신감을 조사하여 응급환자관리를 위한 다학제적 환자안전 교육컨텐츠를 개발하기 위한 기초자료를 제공하고자 시도된 서술적 상관관계 연구이다. 2016년 06월 01일부터 06월 30일까지 J도 H 대학교와 C 대학교의 간호학과와 응급구조학과에 재학생 중 응급실실습을 경험한 3,4학년을 대상으로 편의 추출하였으며 145명을 대상으로 수집된 자료를 SPSS 21.0을 사용하여 분석하였다. 연구결과, 환자안전에 대한 태도는 간호학과 학생이 더 긍정적이었으나, 환자안전 수행자신감 및 환자안전교육 경험에서 차이가 없었으며 의료오류를 목격한 경험이 있는 학생이 환자안전에 대한 긍정적 태도와 수행자신감을 보여주었다. 연구결과를 통해 환자안전사고를 예방하고 적절하게 대처할 수 있는 응급전문인력을 양성하기 위하여 사례 기반의 다학제적 융복합 교육컨텐츠 개발 및 효과검증 연구를 제안한다.

대학생의 학습된 무기력에 관한 융합 연구

위성욱 한국융합학회 2017 한국융합학회논문지 Vol.8 No.8

본 연구는 대학생의 학습된 무기력 정도와 학습된 무기력과 관련 있는 변인을 규명하여 대학생의 학습된 무기력을 감소시키기 위한 방안을 마련하고자 시도되었다. 연구대상자는 G도 H대학교와 C대학교에 재학 중인 대학생 799명을 대상으로 실시하였으며, 자료 분석은 SPSS 21.0을 이용하여 t-test ANOVA, Scheffe test, Pearson's correlation coefficients로 분석하였다. 연구 결과, 대상자의 학습된 무기력 점수는 5점 중 2.55점(±.61)이었으며, 하위영역 중 ‘통제력 결여’가 2.85점(±.44)으로 가장 높았고, 교우관계, 학업성적, 가족 간 협력정도에서 유의한 차이를 나타냈다. 즉, 교우관계가 안 좋거나 학업성적이 낮은 경우, 가족 간 협력정도가 좋지 않은 경우에서 학습된 무기력이 높았고, 상관관계가 있는 것으로 나타났다. 후속연구를 통해 대학생의 학습된 무기력을 설명할 수 있는 변인을 규명하여 대학생의 학습된 무기력을 감소시킬 수 있는 차별화된 프로그램을 개발·운영하여 학습된 무기력을 감소시킬 수 있는 관리가 실행되어야 할 것이다. The Purpose of this study was to identify the level of learned helplessness and the relationship among variables affecting their learned helplessness. We have carried out research on 799 students. and collected data were analyzed using t-test, ANOVA, scheffe test, pearson's correlation coefficient. As a result, the mean score of learned helplessness was 2.55 (±.61), Of the sub-domains, ‘lack of control' was the highest with 2.85 (±.44). And It was found that the helplessness was high in the case of poor fellowship, low academic achievement and poor family cooperation. These results were significantly correlated. Through the follow-up research, it is necessary to carry out management to reduce the learned helplessness by developing differentiated program that can reduce the learned helplessness of university students by identifying variables that can explain the learned helplessness of university students.

서울 거주 산모 모유 중 PBDEs 이성질체 농도 및 노출 요인에 관한 연구

위성욱,윤조희,민병윤,We, Sung-Ug,Yoon, Cho-Hee,Min, Byung-Yoon 한국환경보건학회 2011 한국환경보건학회지 Vol.37 No.6

Objectives: This study was designed to determine the levels of polybrominated diphenyl ethers (PBDEs) in breast milk and to evaluate the relations with factors affecting these levels. Methods: The congener levels of PBDE in 22 samples of breast milk were analyzed using a high resolution gas chromatograph with a high resolution mass detector. In accordance with our standard operating procedures, the recoveries of internal standards had to range between 68% and 118%. Since the distribution of PBDE concentrations is close to log-normal, the data were logarithmically transformed before analysis. Test subjects were healthy primipara and multipara mothers with a mean age of 32 (SD = 2.7) in 2006. Results: Seven PBDE congeners (BDE-28, 47, 99, 100, 153, 154, and 183) were detected and identified in all of the pooled breast milk samples, indicating widespread contamination from PBDEs in the environment in Korea. Residue levels of total PBDEs (sum PBDEs from tri- to hepta-BDE) ranged from 0.84-13.1 ng/g lipid with median and geometric mean levels of 2.6 ng/g lipid and 2.74 ng/g lipid, respectively. PBDE congeners 47, 99 and 153 markedly predominated and accounted for about 75% of the amount of the PBDE congeners analyzed. BDE-47 was the dominant congener in most samples, whereas BDE-153 was predominant in a few (n = 7/22). BDE-47 was highly correlated with total PBDEs (r = 0.987, p < 0.01). In analyses of the differences of the means of log transformed breast milk PBDE levels for groups of potential covariates, only breast milk BDE-47 and BDE-99 levels were significantly associated with fish (p < 0.05) and meat consumption (p < 0.01). However, we did not find significant correlations between PBDE levels and maternal age, body mass index (BMI), parity, job presence and smoking status. Conclusions: Our findings are mainly limited due to the small sampling size and low doses of PBDEs exposure. Background and human exposure data of PBDEs is lacking, and longitudinal investigations into the environment and biota are encouraged to determine the health impact on future populations in Korea.

Deep Anterior Lamellar Keratoplasty Using Irradiated Acellular Cornea with Amniotic Membrane Transplantation for Intractable Ocular Surface Diseases

위성욱,최상욱,김재찬 대한안과학회 2015 Korean Journal of Ophthalmology Vol.29 No.2

Purpose: To report the clinical outcomes of deep anterior lamellar keratoplasty (DALK) when sterile gamma-irradiated acellular corneal tissues (VisionGraft) are used in combination with amniotic membrane transplantation (AMT) for intractable ocular surface diseases. Methods: The medical records of fifteen patients who had DALK with AMT were retrospectively reviewed. Indications for surgery included ocular burn, bacterial keratitis, herpes simplex virus keratitis, corneal opacity with Stevens-Johnson syndrome, Mooren’s ulcer, idiopathic myxoid degeneration of corneal stroma, and recurrent band keratopathy. DALK was performed using partial-thickness acellular corneal tissue and a temporary amniotic membrane patch was added at the end of the operation. Results: All cases that underwent DALK with AMT became epithelialized within 2 postoperative weeks. Twelve patients showed favorable outcomes without graft rejection, corneal opacification, or neovascularization. The other three grafts developed corneal opacification and neovascularization, and required additional penetrating keratoplasty (PK). Unlike the results of previous PKs, there were no graft rejections and the graft clarity was well-maintained in these three cases for at least 8 months after PK. Conclusions: DALK using sterile acellular corneal tissues in combination with AMT may be a good therapeutic strategy for treating intractable ocular surface diseases because of lowered immune rejection, fibroblast activation, and facilitation of epithelialization. Furthermore, DALK can help stabilize the ocular surface, prolong graft survival, and may allow better outcomes when combined with subsequent PK.

마산만 표층퇴적물 중 유기할로겐화합물질의 잔류레벨 및 분포특성

위성욱,윤조희,민병윤 대한환경공학회 2007 대한환경공학회 학술발표논문집 Vol.2007 No.12

전신홍반루푸스 환자에서 발생한 전안부 임상양상 2예

위성욱,김재찬.Sung Wook Wee. MD. Jae Chan Kim. MD. PhD 대한안과학회 2012 대한안과학회지 Vol.53 No.7

Purpose: To report the clinical course and results of two cases of anterior segment manifestations associated with systemic lupus erythematosus (SLE). Case summary: The first case was a 63-year-old female patient who was diagnosed with corneal ulcer and symblepharon on her left eye and dry eye in both eyes. Although the patient was treated with topical antibiotics, autologous serum and artificial tears, amniotic membrane transplantation and symblepharon removal were subsequently required. At 1 month after medical and surgical treatment, the corneal ulcer improved, but a descemetocele was formed because of persistent corneal thinning. The second case was a 24-year-old female patient diagnosed with filamentary keratitis and recurrent corneal erosion in both eyes and uveitis in her left eye. After treatment with therapeutic contact lenses, topical antibiotics and steroids, her symptoms were slightly improved. After 6 months of treatment, filamentary keratitis and corneal erosion recurred to being intractable. The patient received systemic evaluation and was diagnosed with SLE. After a combined therapy of oral and topical treatments, filamentary keratitis and recurrent corneal erosion improved significantly. Conclusions: Clinical manifestations of anterior segment associated with SLE rarely respond to topical treatment and are apt to recur easily; therefore, systemic treatment should be applied for better prognosis. Thus, the therapeutic strategy in intractable ocular diseases should be designed with consideration of accompanying systemic diseases. J Korean Ophthalmol Soc 2012;53(7):1035-1040

식품섭취를 통한 PBDEs 인체노출량 평가

위성욱,윤조희,부민호,김기호,문현주,한순영,민병윤 대한환경공학회 2007 대한환경공학회 학술발표논문집 Vol.2007 No.12