이중필름 수막시스템의 에너지 절감 효과

남상운,허연정,심옥자,심상일,이호상 안성산업대학교 1998 論文集 Vol.30 No.-

This study was carried out to investigate energy saving effect and thermal insulation characteristics of double film water curtain system during the coldest season in greenhouse. A double film water curtain system is a ground water spraying system between double layered plastic film, and it is able to make uniform water curtain. The experimental greenhouses were plastic greenhouses of two types. A type-Ⅰ was a two-thirds arched shape and its area was 350㎡ . A type-Ⅱ was a triangle shape and its area was 190㎡. Both greenhouses were cultivated with cactus. The minimum outside air temperature ranged was -2.6 to -16.7℃ and nocturnal ambient mean temperature was -6.5℃. The experimental greenhouses have maintained the air temperature above 2℃ of type-Ⅰ and 8℃ of type-Ⅱ. The ground water spraying flow rates of these greenhouses were 7.0ℓ/㎡hr of type-Ⅰ and 4.3ℓ/㎡hr of type-Ⅱ. The overall heat transfer coefficient of type-Ⅰ greenhouse was calculated at 1.97 kcal//㎡hr℃ and type-Ⅱ was 1.44 kcal/㎡hr℃. The energy saving rate of type-Ⅰ greenhouse was estimated and 78.1% and type-Ⅱ was 98.9%.

손씻기 교육이 간호사의 손씻기 행위와 중환자의 호흡기로의 MRSA 분리율 감소에 미치는 영향

김남초,최경옥 성인간호학회 2002 성인간호학회지 Vol.14 No.1

Purpose: This is a clinical experimental study aimed to provide basic data to ensure quality care. The propose of this study is to increase nurses hand washing behavior and decrease respiratory isolation rate of MRSA. Method: This study was conducted in Kangnam St. Marys hospital. The subjects included 5 nurses working at the NS ICU and 165 specimen for nasal swabs and 46 specimen for sputum cultures from 106 patients admitted to the NS ICU. The data were collected from June to September 2000. Results: 1. The percentage of the nurses hand washing was 15.6percent but was improved to 46.5 percent after the educational intervention. In particular, hand washing behavior was increased in situations such as after suctioning, before parenteral nutrition, and after providing hygiene care. 2. Results of nasal swab showed that MRSA isolation rate was reduced from 42.8 percent before the education to 18.6percent after the education. The sputum culture results also showed that the MRSA rate was reduced from 40.7percent before the education to 34.6percent after the education. Conclusion: The findings showed the nurses' strict hand washing behavior and use of disposable gloves and paper towers as well as use of hand sterilization spray by visitors or families can decrease the MRSA isolation rate in the NS ICR patients. Since the NS ICU patients may have respiratory complications due to long-term hospitalization, the nurses regular hand washing is important enough to be emphsized. Future research should be focused on the impact of nurses' hand washing behavior on the incidence of pneumonia, an iatrogenic infection.

分岐管內 글리세린 수용액의 流動 特性

하옥남,이행남,이종인,윤치한 朝鮮大學校 機械技術硏究所 1998 機械技術硏究 Vol.1 No.1

본 연구에서는 글리세린 수용액(45%)을 사용하여 2차원 분기관 유로의 정상 층류에서의 분기부의 유동 상태를 알아보기 위하여 레이놀즈 수, 분기 각도, 유량 분배비등이 손실 계수에 미치는 영향을 실험으로 구하고, 다음과 같은 결론을 얻었다. 레이놀즈 수 100을 기준으로 하여 100 이하에서 T형과 Y형의 값은 직선적으로 감소하고, 유량 분배비의 영향은 적으며, 100 이상에서는 유량 분배비에 따라 거의 일정한 값, 즉 본관에서는 0.3∼1.3 지관에서는 1.70∼2.45의 수치에 접근한다. 그러나, 분기각의 영향은 레이놀즈 수 100 이하에서는 크지만, 100 이상에서는 매우 적어서 일정한 값, 즉 본관에서 액 0.9, 지관에서 약 1.8의 값을 갖는다. The purpose of this research is to study the characteristics of the dividing flow in the laminar flow region. Using glycerine-water solution(45%) for Newtonian fluid, this research investigates the flow state of the dividing tube in steady laminar flow region of the two dimensional dividing tube by measuring the effect of Reynolds number, dividing angle, and the flow distribution ratio on the loss coefficient. The results of the research is as follows. In T-type and Y-type tube, the loss coefficient of the glycerine-water solution decreases in constant rate when the Reynolds number is below 100. The effect of the flow distribution rate is negligible. But when the Reynolds number is over 100. the loss coefficient as to the flow distribution rate converges to a constant value. In the main tube the value lies in the range of 0.30-1.30. In the lateral tube the value lies in the range of 1.7-2.45. The effect of the dividing angle is considerable when the Reynolds number is below 100. But it is very small and converges to a constant value when the number is over 100: in the main tube approximately 0.9, and 1.8 in the lateral tube.

고속사진촬영기법의 측정, 평가측면에 관한 검토 : 1980년대 연구 논문을 중심으로

윤남식,이경옥 이화여자대학교 체육대학 보건체육연구소 1990 이화체육논집 Vol.3 No.-

Cinematographic analysis used in biomechanical research has a merit that is discerning ability of moving objects transcending the limits of human perception. In the quantitative analysis, however a continuous process is measured by a series of discrete points, and this is the main cause to produce measurement errors. As a result, the careful control of the experimental procedure and the various scientific techniques should be employed to maximize the reliability and the validity of a biomechanical research. The purpose of the study is to review the method of measurment and evaluation, which has been adapted in the biomechanical analyses of the past. And on the basis of the findings, this would be proposed the proper skills that could minimised errors of measurment and evalution, For the review, 46 of biomechanical theses and studies using cinematographic analyses were selected. All data in the theses and studies were classified according to publication year, movement pattern, subject, the type of camera, calibration of filming rate, projector, digitizer, frame interval, computer, the number of fliming trials, the sige of center of joint, variables, smoothing technique, statistical methods, heigh and distance of camera, and dimension. The results are as folling 1) Total cases of study using cinematographic analysis are composed of 17 cases (36.96%) of gymnastics, 5 cases(10.87%) or track and field and the others 2) Experimental subjects in most of the articles(43.48%) were classified into the skilled and unskilled. 3) In most experiments-37 cases, (80.43%), 16 mm high speed camera was employesd. Every fliming rate was below 100FPS except for the two cases of 100FPS and one case of 300FPS. The cases below 50FPS were also 16 cases (34.78%). 4) Calibration of fliming rate was ignored almost (34 cases, 63.91%) when the calibration was introduced, it was turned out to be ball dropping method with low reliability. 5) Analyses using automation of digitizing were 12 cases (26.09%), with the rest processed manually. 6) The number of fliming and analyzing trials was not revealed except 13 cases (28.26%). 7) Mark for center of joint was not revealed in 47.83%, of the experiments. 8) In analyzing, frame interval proved to be one almostly with the exception of 7 cases (15.22%) whose frame interval being two, three, four respectively. 9) The cases adapting the smoothing technique were 6 (13.04%) among which three used the method of spline function. 10) The cases utilizing statistical methods were 3 (6.52%), all of them depending of T-test and ANOVA-test. From the above results, it could be pointed out that most of biomechanists were concerned with just the formal measurment and discription and ignored the basic concepts of reliability and validity of experiments. The facts should be attributable not only to the ignorance of validity and reliability by biomechanists but also to the poor equipment status in university laboratories. This means that financial support should be increased to develop and grow in addition to the thoughtful and rigorous endeavor to minimize the errors for the part of biomechanists.

암환자가 지각한 좋은 간호사의 특성

조남옥,홍여신,한성숙,엄영란 병원간호사회 2006 임상간호연구 Vol.11 No.2

This study was based on a phenomenological approach. All patients were hospitalized cancer patient who had insight about cancer. Data were collected through in-depth interviews during the months of July and August, 2004. Interviews lasted one and half hours on an average and data were analyzed by Van Kaam method. Result: Four essential attributes of good nurse were identified: compassion, need fullfillment, virtuous and professional expertism. And four essential attributes of bad nurse were identified: insincere, neglect, disregard and lack of expertism. Conclusion: The results of this study showsd that cancer patients perceived the good nurse as possessing the qualities of compassion for patients, having virtuous attitude and professional expertism and fullfilling patient's need. And cancer patients perceived the nuse showing familial intimacy as a good nurse. This perception of cancer patients was influenced by tradition and cultural background. So there is a need for further research about our own culture and its influences on nursing practice.

집단상담에서의 긍정적, 부정적 자기노출이 자아개념이 친밀도에 미치는 영향

최동옥,이남표 漢陽大學校 學生生活硏究所 1991 大學生活硏究 Vol.9 No.-

低壓에서 均一過熱 水中에 있어서 氣泡發生에 關한 考察

河鈺男,洪明錫,吳栗權 조선대학교 동력자원연구소 1984 動力資源硏究所誌 Vol.6 No.2

Fer liquid temperature range from 40℃ to 80℃ which is related to flash evaporation, the experimentals were conducted the bubble occurences of superheated water in The conditions of constant circumference pressures by changing the degrees of superheat and liquid temperatures schematically and compared with numerical methods. (1) The ratios of radius, R_1/R_2 were not related to the degrees of superheat, but effected by water column pressures. (2) In the liquid temperature range from 55℃ to 75℃, the values of experimental and those of numerical were well agreed but for the liquid ranges from T=40℃ and the values of experimental were the lower than those of numerical with the lowering the liquid temperatures.

정보 공학 분야의 산학 협동에 관한 연구

박일남,곽윤식,채옥삼,이대영 慶熙大學校 材料科學技術硏究所 1991 材料科學技術硏究論集 Vol.4 No.-

In this paper, main subjects of information engineering are established, investigated and analized. Especially, cooperation methods between industry and university in area of VLSI (Very Large Scale Integration) are prooposed. Recent trend, educational condition, man power and R 7 D trend are investigated. Fuiture trends are analized, Finally, detail methods against this are proposed.

열교환기 구조 변화에 따른 NH₃와 R22의 성능특성연구

하옥남,하경수,이승재,정송태 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-

Nowadays HCFCs refrigerant are restricted because it cause depletion of ozone layer. However, natural gases such as ammonia as an organic compound, propane and propylene as hydrocarbon are easy and cheap to obtain as well as environmental. Accordingly, this experiment apply the NH3 and R22 to study the performance characteristic from the superheat control and compare the energy efficiency of two refrigerants from the high performance. The condensing pressure of refrigeration system is increased from 15bar to 16bar and degree of superheat is increased from 0 to 10℃ at each condensing pressure. As the result of experiment, when comparing the each COP, we knew the NH₃ is suitable as the alternative refrigerant of the R22.

비판적 문헌고찰에 의한 건강행위 관련이론의 분석

강남미,유경희,김성재,조남옥,최희정 서울대학교 간호대학 간호과학연구소 1996 간호학 논문집 Vol.10 No.1

This study was conducted by critical review analyzing literatures of theories focused on changes of health behaviors. 5 theories-TRA, HBM, Self-Efficacy, Social Support, and Locus of Control-were selected among many theories of health behaviors. Theories were summarized, and models and concepts of theories were described. The results of this study were follows : 1. health behaviors could be classified into preventive behaviors and curative behaviors. 2. Most conceran of previous studies in this field was on health behavior execution itself or on its outcome. 3. the focus of previous studies was on initiation, maintenance, facilitation, and change of preventive and curative behaviors. 4. Factors affecting on health behaviors were demographic factors as exogenous variables and intrapsychic and extrapsychic factors as endogenous variables. 5. Previous studies tested predictability and explicability of these theories onhealth behaviors and identified factors affecting health behaviors most. 6. concepts of TRA, SELF-Efficacy, and Social support had higher explicability on health behaviors than concepts of HBM and Locus of control. From results of this study, we suggested the direction and considerations for futher nursing studies related with these theories. And we derived testable propositions from relationship between concepts and each others.